JPH10278193A - Non-adherent composite material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve adhesion to a base without requiring a complex process by forming, on a base, a material composed of copolymer comprising a specific amount of fluorine-containing ethylene monomers containing a specific functional group, and fluorine-containing ethylene monomers without the functional group. SOLUTION: A material applied to a base is composed of fluorine-containing ethylene copolymer having a functional group composed of copolymerizing 0.05-30 mol.% of at least one type of monomer in fluorine-containing ethylene monomers containing a specific functional group, and 70-99.95 mol.% of at least one type of monomer in fluorine-containing ethylene monomers without the functional group. The functional group of fluorine-containing ethylene copolymer containing the functional group is selected from a hydroxly group, a carboxyl group, carboxylate, a carboxy-ester group, or an epoxy group. For example, hydroxyl group-containing tetrafluoroethylene-perfluoro (alkylvinyl ether) is used for an adhesive layer 3 between metal plates 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to non-adhesiveness, heat resistance, transparency (design), antifouling properties and water / oil repellency.
In addition, the present invention relates to a non-adhesive composite material in which a fluoropolymer having excellent adhesiveness to a substrate is applied to the substrate, and the non-adhesive property of the composite is particularly utilized.

[0002]

2. Description of the Related Art In cooking appliances or tableware for processing and heating foodstuffs, office equipment using toner such as an electrostatic copying machine, and household electric appliances such as a ventilation fan, the use of foodstuffs, toner, oil, etc. If the material adheres to equipment or its parts, the original function and aesthetics will be impaired,
There is a demand for the use of non-stick materials for such potential sites.

As the non-adhesive material, a fluorine-based material, particularly a fluorine-containing resin, is most commonly used, and is actually used.

[0004] However, the fluorine-containing resin has an essential problem that its adhesiveness to a substrate such as metal or glass is not sufficient due to its excellent non-adhesiveness to be used.

In the case where the fluoropolymer is applied in the form of a paint, the anchor effect between the fluororesin and the base material is enhanced by chemically or physically roughening the surface of the metal. There is a way to make sure that they adhere. However, this method requires time and effort for the surface roughening treatment itself, and even if the adhesive strength is initially obtained, the anchor effect is attenuated when repeated temperature changes are applied or when used at high temperatures.

[0006] A method has also been proposed in which the surface of a fluororesin is treated with a solution of metallic sodium dissolved in liquid ammonia to chemically activate the surface. However, in this method, there is a problem that the processing liquid itself may cause environmental pollution, and there is a danger in handling the processing liquid.

Further, a method has been proposed in which the surface of the fluororesin is subjected to a physicochemical treatment such as plasma sputtering to activate the surface. However, in this method, the treatment is troublesome or the cost is increased. There was a problem.

Further, it has been studied to add various components for improving the adhesion to the fluorine-containing resin coating and to form a primer layer in advance.

For example, there is a technique of adding a mineral acid such as chromic acid to a coating composition containing a fluorine-containing polymer to form a chemical conversion film on the metal surface to enhance the adhesion (Japanese Patent Publication No. Sho 63-163).
No. 2675). However, since chromic acid contains hexavalent chromium, it cannot be said that both food safety and work safety are sufficient. Further, when another inorganic acid such as phosphoric acid is used, there is a problem that the safety of the fluorine-containing resin coating is impaired.

In place of the above-mentioned inorganic acid, a heat-resistant resin such as polyamideimide, polyimide, polyethersulfone, polyetheretherketone, and metal powder are added to a coating composition containing a fluorine-containing resin. Formation of a primer layer has been studied (JP-A-6-264000). However, the fluorine-containing polymer and the heat-resistant resin have little compatibility in the first place, and phase separation or the like occurs in the coating film, so that the phase separation easily occurs between the primer layer and the top coat layer of the fluorine-containing resin. In addition, due to differences in the heat shrinkage between the fluoropolymer and the heat-resistant resin, and the decrease in the film elongation due to the addition of the heat-resistant resin, coating of pinholes and cracks during high-temperature processing and use, etc. Film defects are likely to occur. In addition, these heat-resistant resins are inferior in design because browning occurs during firing, and are difficult to use in applications requiring white, vivid coloring, transparency, and the like. In addition, blending a heat-resistant resin also reduces the non-adhesiveness and low friction inherent of the fluoropolymer.

When the fluororesin paint is adhered to a glass substrate or the like which requires transparency, the surface of the substrate is treated with a silane coupling agent or a silicone resin is added to the fluororesin paint. (JP-B-54-42366, JP-A-5-17).
No. 7768), the adhesion is insufficiently improved, the heat resistance is reduced, and peeling, foaming, and coloring are likely to occur at the time of firing or at a high temperature.

On the other hand, as a fluorine-containing resin paint, those obtained by copolymerizing a hydrocarbon (non-fluorine) monomer containing a functional group such as a hydroxyl group or a carboxyl group have been studied. The main purpose of the present invention is to investigate the non-adhesiveness is insufficient, and it is difficult to use it in applications requiring heat resistance (for example, 200 to 350 ° C.).

That is, when a hydrocarbon-based (non-fluorine-based) monomer containing a functional group is copolymerized, thermal decomposition is apt to occur from the monomer component during processing or use at high temperatures, and the coating film is destroyed. In addition, coloring, foaming, peeling, and the like occur, the non-adhesiveness is reduced, and the purpose of fluorine-containing resin coating cannot be achieved.

Further, fluoropolymers generally have insufficient mechanical strength and dimensional stability, and are expensive in price.
Therefore, in order to minimize these disadvantages and maximize the advantages inherent in the fluoropolymer, application in the form of a film has been studied.

However, the fluoropolymer inherently has low adhesive strength as described above, and it is difficult to directly adhere the fluoropolymer in the form of a film to another material (substrate).
For example, even if the bonding is attempted by heat fusion, the bonding strength is insufficient, or even if there is a certain degree of bonding strength, the bonding strength tends to vary depending on the type of the base material, and the reliability of the bonding is insufficient. Was often.

The method for bonding the fluoropolymer film and the substrate is as follows. 1. A method of physically roughening the surface of the substrate by sandblasting or the like; 2. A method of subjecting the fluorine-containing resin film to a chemical treatment such as sodium etching, a surface treatment such as a plasma treatment, or a photochemical treatment; A method of bonding using an adhesive has been mainly studied.
Separate processing steps are required, complicating the steps and reducing productivity. In addition, the type and shape of the substrate are limited. further,
The obtained adhesive strength is also insufficient, and the inherent non-adhesiveness of the fluororesin is reduced, and appearance problems (designability) such as coloring and color of the obtained composite are likely to occur. In addition, a method using a chemical such as sodium etching has a problem in safety.

Various studies have been made on the above-mentioned adhesive. General hydrocarbon-based (non-fluorine-based) adhesives have insufficient adhesiveness and insufficient heat resistance, and generally require a high-temperature molding or processing of a fluoropolymer film. In bonding processing conditions, it can not stand,
Causes peeling and coloring due to decomposition. The composite using the adhesive also has insufficient heat resistance, chemical resistance, and water resistance of the adhesive layer, so that the adhesive strength cannot be maintained due to a temperature change or an environmental change, and lacks reliability.

On the other hand, studies have been made on adhesion by an adhesive composition using a fluoropolymer having a functional group.

For example, a hydrocarbon monomer having a carboxyl group, a carboxylic anhydride residue, an epoxy group, or a hydrolyzable silyl group represented by maleic anhydride or vinyltrimethoxysilane is grafted onto a fluoropolymer. Reports of using a polymerized fluoropolymer as an adhesive (for example, JP-A-7-18035, JP-A-7-25952)
JP-A-7-25954, JP-A-7-173230
JP-A-7-173446, JP-A-7-17344
No. 7 publications) and adhesion of a fluorine-containing copolymer obtained by copolymerizing a hydrocarbon monomer containing a functional group such as hydroxylalkyl vinyl ether with tetrafluoroethylene or chlorotrifluoroethylene, and an isocyanate-based curing agent There is a report (for example, Japanese Patent Application Laid-Open No. Hei 7-228848) in which a curable composition is cured and used as an adhesive between a vinyl chloride resin and ETFE subjected to corona discharge treatment.

The adhesive composition using a fluororesin obtained by graft-polymerizing or copolymerizing a hydrocarbon-based functional group monomer has insufficient heat resistance, and is processed at a high temperature in a composite with a fluororesin film. When used at a high temperature or at high temperatures, decomposition, foaming, etc. occur, resulting in a decrease in adhesive strength, peeling, or coloring. Further, Japanese Patent Laid-Open No.
In the adhesive composition described in 228848, the fluorine-containing resin film requires corona discharge treatment.

As described above, there is no material which is firmly adhered to a substrate as a non-tacky composite material.

[0022]

SUMMARY OF THE INVENTION In view of the above facts, an object of the present invention is to provide a material comprising a fluoropolymer having excellent adhesion to a substrate without requiring a complicated process. An object of the present invention is to provide a non-adhesive composite material applied to a material.

The non-adhesive composite material of the present invention is further excellent in transparency (design), antibacterial property, antifouling property, water / oil repellency, dirt removing property, chemical resistance, rust resistance, and energy ray resistance. ing.

[0024]

SUMMARY OF THE INVENTION The present invention provides (a) a functional group containing at least one functional group selected from the group consisting of a hydroxyl group, a carboxyl group, a carboxylate, a carboxyester group and an epoxy group. 0.05 to 30 at least one kind of fluorine-containing ethylenic monomer
(B) at least one monomer of the above-mentioned fluorine-containing ethylenic monomer having no functional group and 70 to 99.95.
The present invention relates to a non-adhesive composite material obtained by applying a material comprising a functional group-containing fluorine-containing ethylenic polymer obtained by copolymerizing a fluorine-containing ethylenic polymer to a base material.

In this case, the functional group-containing fluorine-containing ethylenic monomer (a) is represented by the formula (1): CX ₂ ＣCX ¹ -R _f -Y (1) (where Y is -CH ₂ OH) , -COOH, a carboxylate salt, a carboxyester group or an epoxy group, X and X ¹ are the same or different and are a hydrogen atom or a fluorine atom,
R _f is a divalent fluorinated alkylene group having 1 to 40 carbon atoms,
A fluorine-containing oxyalkylene group having 1 to 40 carbon atoms, a fluorine-containing alkylene group containing an ether group having 1 to 40 carbon atoms or a fluorine-containing oxyalkylene group containing an ether bond having 1 to 40 carbon atoms) Preferably, it is a fluorine-containing ethylenic monomer containing various functional groups.

It is preferable that the fluorine-containing ethylenic monomer (b) having no functional group is tetrafluoroethylene.

Further, the fluorine-containing ethylenic monomer (b) having no functional group is tetrafluoroethylene 85
９９99.7 mol% and formula (2): CF ₂ ＝ CF—R _f ¹ (2) (wherein, R _f ¹ is CF ₃ or OR _f ² (R _f ² is carbon number 1 to 1)
5 perfluoroalkyl group)
It is preferably a mixed monomer of up to 15 mol%.

Further, the fluorine-containing ethylenic monomer (b) having no functional group is a copolymer of tetrafluoroethylene 40 to 80 mol%, ethylene 20 to 60 mol% and another copolymerizable monomer. It is preferably a mixed monomer with 0 to 15 mol%.

In the present invention, the functional group-containing fluorine-containing ethylenic polymer is preferably applied to a substrate in the form of a paint, an aqueous dispersion, a powder paint or a film.

The substrate may be a metal or a ceramic such as glass.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION The non-tacky composite material of the present invention
(A) at least one of a functional group-containing fluorine-containing ethylenic monomer having at least one functional group selected from the group consisting of a hydroxyl group, a carboxyl group, a carboxylate, a carboxyester group and an epoxy group; (B) at least one monomer 7 of the above-mentioned fluorine-containing ethylenic monomer having no functional group
A material comprising a fluorine-containing ethylenic polymer having a functional group obtained by copolymerizing 0 to 99.95 mol% is applied to a substrate.

The material comprising the functional group-containing fluoropolymer may be used in the form of a paint or a film on a metal, glass, or other base material, using an adhesive, treating the surface of the base material, forming a primer layer, The material has surprisingly strong adhesion without adding an adhesive component to the material.

The functional group-containing fluorine-containing polymer used to obtain the composite material of the present invention is prepared by using the functional group-containing fluorine-containing ethylenic monomer (a) described above and containing the functional group-free fluorine-containing monomer. It is important to copolymerize with the fluorinated ethylenic monomer (b) and introduce a functional group into the fluorinated polymer. It can directly give excellent adhesion. That is,
Even a functional group-containing fluoropolymer has excellent heat resistance as compared with a copolymer obtained by copolymerizing a non-fluorine functional group-containing monomer, and can be used at a high temperature (eg, 200 to 400 ° C.). Thermal decomposition and the like can be suppressed to a lesser extent, a large adhesive strength can be obtained, and a coating layer free from coloring, foaming, pinholes, leveling defects and the like can be formed on the substrate. Also, when the composite material is used at high temperature, it maintains the adhesiveness, and further color, whiten, foam,
Defects in the coating layer such as pinholes are less likely to occur.

The functional group-containing fluoropolymer is
As such, it has not only heat resistance but also excellent properties such as chemical resistance, non-adhesion, antifouling, low friction, and weather resistance of fluoropolymers. Can be given without reduction.

Next, the functional group-containing fluorine-containing ethylenic copolymer which is a material of the composite material of the present invention will be described.

The functional group of the functional group-containing fluorine-containing ethylenic polymer is at least one selected from a hydroxyl group, a carboxyl group, a carboxylate, a carboxyester group and an epoxy group. It can give adhesion to the material. The type and combination of the functional groups are appropriately selected depending on the type, purpose and application of the surface of the substrate, but those having a hydroxyl group are most preferable in terms of heat resistance.

The functional group-containing fluorinated ethylenic monomer (a), which is one of the components constituting the functional group-containing fluorinated ethylenic polymer, is represented by the following formula (1): CX ₂ = CX ¹ -R _f -Y (1) (in the formula, Y is -CH ₂ OH, -COOH, carboxylate, carboxylic ester group or epoxy group, X and X ¹ are the same or different hydrogen atom or a fluorine atom,
R _f is a divalent fluorinated alkylene group having 1 to 40 carbon atoms,
A fluorine-containing oxyalkylene group having 1 to 40 carbon atoms, a fluorine-containing alkylene group containing an ether group having 1 to 40 carbon atoms, or a fluorine-containing oxyalkylene group containing an ether bond having 1 to 40 carbon atoms) It is preferably a fluorine-containing ethylenic monomer.

As a specific example of the functional group-containing fluorine-containing ethylenic monomer (a), the following formula (3): CF ₂ ＣＦCF—R _f ³ —Y (3) R _f ³ is the same as Y in 1) and has 1 to 4 carbon atoms.
0 divalent fluorinated alkylene group or OR _f ⁴ (R _f ⁴ is a divalent fluorinated alkylene group having 1 to 40 carbon atoms or a divalent fluorinated alkylene group containing an ether bond having 1 to 40 carbon atoms) ], Formula (4): CF ₂ = CFCF ₂ -OR _f ⁵ -Y (4) [wherein, Y is the same as Y in formula (1), and R _f ⁵ has 1 to 3 carbon atoms.
9 divalent fluorine-containing alkylene groups or 1 to 39 carbon atoms
Represents a divalent fluorine-containing alkylene group containing an ether bond of the formula], formula (5): CH ₂ ＣＦCFCF ₂ —R _f ⁶ —Y (5) wherein Y is the same as Y in the formula (1); R _f ⁶ has 1 to 3 carbon atoms
9, a divalent fluorine-containing alkylene group, or OR _f ⁷ (R _f ⁷
Represents a C1-C39 divalent fluorinated alkylene group or a C1-C39 divalent fluorinated alkylene group containing an ether bond) or a formula (6): CH ₂ ＣＨCH—R _f ⁸ -Y (6) [in the formula, Y is the same as Y in formula (1), R _f ⁸ is 1 to 4 carbon atoms
And a divalent fluorine-containing alkylene group of 0].

The functional group-containing fluorine-containing ethylenic monomers of the formulas (3) to (6) have relatively good copolymerizability with the fluorine-containing ethylenic monomer (b) having no functional group. This is preferred because it does not significantly reduce the heat resistance of the copolymer obtained.

Among these, the formulas (3) and (5) are preferable from the viewpoints of copolymerizability with the fluorine-containing ethylenic monomer (b) having no functional group and heat resistance of the obtained polymer. The compound of the formula (5) is preferred, and the compound of the formula (5) is particularly preferred.

As the functional group-containing fluorine-containing ethylenic monomer represented by the formula (3),

[0042]

Embedded image

And the like.

The functional group-containing fluorine-containing monomer represented by the formula (4) includes

[0045]

Embedded image

And the like.

The functional group-containing fluorine-containing monomer represented by the formula (5) includes

[0048]

Embedded image

And the like.

The functional group-containing fluorine-containing monomer represented by the formula (6) includes

[0051]

Embedded image

And the like.

Others

[0054]

Embedded image

And the like.

The fluorine-containing ethylenic monomer (b) having no functional group and copolymerizing with the functional group-containing fluorine-containing ethylenic monomer (a) can be appropriately selected from known monomers. Heat resistance, chemical resistance,
Gives the polymer antifouling properties and low friction properties.

Specific fluorinated ethylenic monomer (b)
As tetrafluoroethylene, formula (2): CF ₂
ＣＦCF—R _f ¹ [R _f ¹ represents CF ₃ or OR _f ² (R _f ² represents a C 1-5 perfluoroalkyl group)], chlorotrifluoroethylene, vinylidene fluoride, vinyl fluoride, Hexafluoroisobutene,

[0058]

Embedded image

(Wherein X ² is selected from a hydrogen atom, a chlorine atom or a fluorine atom, n is an integer of 1 to 5) and the like.

Further, in addition to the fluorine-containing ethylenic monomer having a functional group (a) and the fluorine-containing ethylenic monomer having no functional group (b), heat resistance and non-adhesiveness are not reduced. An ethylenic monomer having no fluorine atom within the range may be copolymerized. In this case, the ethylenic monomer having no fluorine atom has 5 carbon atoms in order not to lower the heat resistance.
It is preferable to select from the following ethylenic monomers, and specific examples include ethylene, propylene, 1-butene and 2-butene.

The content of the functional group-containing fluorinated ethylenic monomer (a) in the functional group-containing fluorinated ethylenic polymer (A) used in the present invention is determined based on the total amount of the monomers in the polymer. It is 0.05 to 30 mol%. The content of the functional group-containing fluorine-containing ethylenic monomer (a) depends on the type, shape, coating method, film forming method, condition, and purpose and application of the surface of the base material which is required to be non-adhesive. Although it is appropriately selected depending on the difference, etc., it is preferably 0.05 to 20 mol%, particularly preferably 0.1 to 10 mol%.

When the content of the functional group-containing fluorinated ethylenic monomer (a) is less than 0.05%, it is difficult to obtain sufficient adhesiveness to the surface of the substrate, and it is difficult to obtain a change in temperature and penetration of chemicals. Easily causes peeling. In addition, 30 mol%
If the heat treatment temperature exceeds the above range, the heat resistance will be reduced, and when firing at a high temperature or when used at a high temperature, poor adhesion, coloring, foaming, pinholes, etc. will occur, resulting in poor design properties, peeling of the coating layer and thermal decomposition It is easy to cause elution of substances.

Preferred examples of the functional group-containing fluorine-containing ethylenic polymer used in the present invention are as follows.

(I) Polymer (I) comprising 0.05 to 30 mol% of a functional group-containing fluorine-containing ethylenic monomer (a) and 70 to 99.95 mol% of tetrafluoroethylene (reactive P
TFE).

This polymer is excellent in heat resistance and chemical resistance in addition to being non-adhesive, and further excellent in slidability (low friction and wear resistance).

(II) The functional group-containing fluorine-containing ethylenic monomer (a) is used in an amount of 0.05 to 30 mol% based on the total amount of the monomers.
And 85 to 99.7 mol% of tetrafluoroethylene with respect to the total amount of the monomer excluding the monomer (a) and the formula (2): CF ₂ = CF-R _f ¹ (2) [ R _f ¹ is ^{_{CF 3, OR f 2 (R}} f 2 is a perfluoroalkyl group having 1 to 5 carbon atoms) polymer of monomer 0.3 to 15 mole% represented by] selected from (II) . For example, a tetrafluoroethylene-perfluoro (alkyl vinyl ether) copolymer having a functional group (reactive PFA) or a tetrafluoroethylene-hexafluoropropylene polymer having a functional group (reactive FEP).

This polymer is the same as the reactive PTFE of the above (I).
It has almost the same non-adhesiveness, heat resistance, and chemical resistance as it does, and is transparent, and can be melt-molded. Even when applied in the form of a paint, it can be made transparent and smooth by heat. Excellent in point.

(III) A monomer containing the functional group-containing fluorine-containing ethylenic monomer (a) in an amount of 0.05 to 30 mol% based on the total amount of the monomer, and excluding the monomer (a) , 40 to 80 mol% of ethylene, 20 to 60 mol% of ethylene, and other copolymerizable monomer 0
To 15 mol% of the polymer (III) (ethylene-tetrafluoroethylene polymer having a functional group (reactive ETF)
E)).

This polymer has excellent heat resistance, antifouling property and weather resistance in addition to excellent non-adhesiveness, is excellent in transparency, has excellent mechanical strength, and is hard and tough. In addition, they are excellent in that they have excellent melt fluidity, so that they can be easily formed and composited with other base materials (such as lamination).

The above-mentioned functional group-containing fluorine-containing polymer is obtained by polymerizing the above-mentioned functional group-containing fluorine-containing ethylenic monomer (a) and the fluorine-containing ethylenic monomer having no functional group (b) by a known method. It can be obtained by copolymerizing by a method. Among them, a method based on radical copolymerization is mainly used. That is, the means for initiating the polymerization is not particularly limited as long as it proceeds radically, but is initiated by, for example, an organic or inorganic radical polymerization initiator, heat, light or ionizing radiation. As the type of polymerization, solution polymerization, bulk polymerization, suspension polymerization, emulsion polymerization, or the like can be used. The molecular weight is controlled by the concentration of the monomer used for the polymerization, the concentration of the polymerization initiator, the concentration of the chain transfer agent, and the temperature. The composition of the resulting copolymer can be controlled by the composition of the charged monomers.

The functional group-containing fluorine-containing ethylenic polymer described above can take various forms as a material to be applied to a substrate. Typically, it is in the form of a paint material or a film material, but may be in the form of a molded product.

In the present invention, the non-adhesive composite material can be obtained by applying the functional group-containing fluorine-containing ethylenic polymer to a substrate in the form of a paint.

In the present invention, when applied to a substrate in the form of a coating, it can be in the form of an aqueous dispersion, an organic solvent dispersion, a powder (including a granulated substance), an organosol, or an aqueous emulsion of an organosol. Among these, it is preferable to apply in the form of an aqueous dispersion or a powder (powder coating) from the viewpoint of environment and safety.

The paint may be applied in such a manner that the functional group-containing fluorine-containing ethylenic polymer exhibits excellent adhesiveness to a substrate, and may be a single layer or a primer layer. May be used.

The aqueous dispersion for a fluorine-containing paint according to the present invention is obtained by dispersing the particles of the above-mentioned functional group-containing fluorine-containing ethylenic polymer in water. By introducing a functional group into the fluorinated polymer, the dispersion stability of the fine particles in the aqueous dispersion is improved, and a paint having good storage stability is obtained. Further, the leveling property and the transparency of the coating film after application are improved. .

As the functional group-containing fluorine-containing ethylenic polymer, reactive PTFE (I) in terms of heat resistance and low friction in addition to non-adhesiveness, and reactive PTFE (I) in terms of heat resistance and transparency. Reactive PFA or reactive FEP (II) is preferred.

The aqueous dispersion is preferably a composition in which fine particles of the polymer of 0.01 to 1.0 μm are dispersed in water. In general, a surfactant for stabilizing the dispersion may be incorporated therein. Further, non-adhesive and heat resistance in the aqueous dispersion, pigments, surfactants usually used in a range that does not significantly reduce chemical resistance, low friction,
Additives such as an antifoaming agent, a viscosity modifier, and a leveling agent can be blended.

The aqueous dispersion for a fluorine-containing paint can be produced by various methods. Specifically, for example, a method of finely pulverizing a powder of a fluoropolymer having a functional group obtained by a suspension polymerization method or the like and uniformly dispersing the powder in an aqueous dispersion medium with a surfactant, Emulsion polymerization produces a fluorinated aqueous dispersion at the same time as polymerization, and further incorporates surfactants and additives if necessary. A method of directly producing an aqueous dispersion by an emulsion polymerization method from the powder size) is preferred.

The polymer concentration of the aqueous dispersion varies depending on the target film thickness, the concentration of the paint, the viscosity, the coating method and the like.
Usually, it may be selected within a range of about 5 to 70% by weight.

The coating method is not particularly limited.
The coating may be applied by a spray method, a roll coating method or the like, dried, and fired at a temperature equal to or higher than the melting point of the polymer and equal to or lower than the decomposition temperature according to the type of the polymer.

The thickness of the coating film may be appropriately selected depending on the application, purpose, substrate and the like.
m, preferably 10 to 100 μm.

The powder coating according to the present invention comprises the above-mentioned functional group-containing fluorine-containing ethylenic polymer powder.

Further, in addition to non-adhesion, heat resistance, corrosion resistance,
Reactive PFA or reactive FE because of its chemical resistance
Reactive ETFE (III) is preferred because P (II) has antifouling properties, processability, and transparency.

The fluorine-containing powder coating has a particle size of 10 μm to 100 μm.
A powder or granule having a shape of 0 μm and an apparent density of 0.3 to 1.2 g / cc is preferably used.

The fluorine-containing powder coating may be, for example, a carbon powder, a pigment such as titanium oxide or cobalt oxide, a glass fiber, a carbon fiber, or the like, as long as the performance of the fluororesin such as non-adhesion and heat resistance is not significantly reduced. Powder, mica and other reinforcing agents, amine antioxidants, organic sulfur compounds, organic tin antioxidants, phenolic antioxidants, heat stabilizers such as metallic soap, leveling agents, antistatic agents, etc. Additives can be appropriately compounded.

The above-mentioned additives may be mixed with the fluorine-containing powder coating material in a powder form (dry method) or in a slurry state (wet method). preferable. As a mixing device, for example, a sand mill, V
Conventional mixers and pulverizers such as a mold blender and a ribbon blender can be used.

The coating of the fluorine-containing powder coating material is generally performed by a method such as electrostatic spraying, fluidized bed immersion, or rotary lining, and then, depending on the type of the polymer, a temperature not lower than the melting point of the polymer and not higher than the decomposition temperature. Sintering, a good coating film can be formed.

In general, in the case of electrostatic powder coating, a film thickness of 10 to 10
200 μm, in case of rotary lining, film thickness 200-1
A 000 μm coating is formed.

Further, the functional group-containing fluorine-containing ethylenic polymer used in the above-mentioned fluorine-containing paint material utilizes the adhesive property to make the functional group excellent in non-adhesion to the surface of a substrate such as metal or glass. It can also be used as a primer layer for a fluorine-containing paint having good heat resistance when coating a fluorine resin having no. The obtained non-adhesive composite material has a functional group-containing fluorine-containing ethylenic polymer as a primer layer on a substrate, and a fluororesin having no functional group as a top coat layer. Of course, a functional group-containing fluorine-containing ethylenic polymer may be used as the top coat layer.

The primer for a fluorine-containing paint comprises the above-mentioned functional group-containing fluorine-containing ethylenic polymer.

As the primer, those similar to the above-mentioned fluoropolymers can be specifically used, such as the type of the surface of the substrate and the type of fluoropolymer to be coated via the primer (the type of top coat). Is selected as appropriate. In general, the primer for a fluorine-containing paint is preferably one having a structure equivalent to the structure of the fluorine-containing polymer coated thereon and containing a functional group.

This combination has good compatibility between the fluorine-containing polymer used for the primer and the fluorine-containing polymer coated thereon, so that not only the adhesion to the surface of the substrate but also the primer layer Interlayer adhesion strength with the top coat layer can also be good. Further, even when used at a high temperature, unlike a case where a primer to which another resin component is added is used, delamination, cracks, pinholes, and the like due to differences in the thermal shrinkage of the polymer are unlikely to occur. Also, since the entire coating film is composed of a fluoropolymer in the first place, it can sufficiently cope with applications having transparency and vivid coloring, and furthermore, a fluoropolymer layer having no functional group on the outermost surface of the coating film. , Excellent non-adhesion, heat resistance, chemical resistance and low friction can be exhibited more effectively.

Examples of the fluorine-containing polymer containing no functional group used for the top coat layer include PTFE, PFA, FEP,
Examples include ETFE, PVdF, and VdF-based copolymers.

As the primer for fluorine-containing paint, specifically, the above-mentioned functional group-containing fluorine-containing ethylenic polymer can be used. When the base material is coated with PTFE, reactive PTFE (I), Reactive PFA or FEP
It is preferable to use a primer selected from (II) as the primer, and particularly to use a hot-melt reactive PFA or FEP.
It is more preferable to use (II) as a primer because it can be firmly hot-melted and adhered to the surface of the substrate by firing. When the substrate is coated with PFA or FEP, it is preferable to use reactive PFA or FEP (II) as the primer. Further, when the base material is coated with ETFE, the use of reactive ETFE (III) as a primer is particularly preferred.
It is preferable from the viewpoint of adhesiveness and transparency.

The coating method using the primer layer includes (first step) a step of applying a primer for a fluorine-containing paint comprising the above-mentioned fluorine-containing polymer having a functional group to the surface of a substrate, and (second step) A step of applying a fluorine-containing paint made of a fluorine-containing polymer having no or having a functional group on the primer layer formed in one step, (third step) lamination obtained in the first step and the second step A method for coating a fluoropolymer, which comprises three major steps of firing the body, can be preferably used. Further, the primer layer applied in the first step is touch-dried at 80 to 150 ° C. for about 5 to 30 minutes, and proceeds to the next second step (2 coats 1
Baking) or firing the primer layer at a high temperature equal to or higher than the melting temperature, for example, and then proceeding to the second step (two coats and two bake).

In the first step, the method of applying the primer is appropriately selected according to the form of the primer. For example, when the fluorine-containing primer is in the form of an aqueous dispersion, spray coating, spin coating, brushing, dipping, etc. A method is used. In the case of a powder coating, a method such as an electrostatic coating method, a fluid immersion method, or a rotary lining method is used.

The thickness of the primer layer may vary depending on the purpose, application, type of surface of the substrate, and form of coating.
It is 50 μm, preferably 2 to 20 μm. As described above, since the primer generally has a low film thickness, it is preferable to apply the primer in the form of an aqueous dispersion by spray coating or the like.

The method of applying the coating of the fluoropolymer containing no or containing a functional group on the primer layer in the second step is appropriately selected depending on the type of the fluoropolymer, the form of the coating, the purpose and the use. For example, in the case of aqueous dispersions or organic solvent dispersions, spray coating, brushing, roll coating, spin coating, etc. are generally performed,
In the case of a powder coating, it is applied by a method such as electrostatic coating, a fluid immersion method, and a rotary lining method.

The coating film of the fluoropolymer in this step is completely different depending on the use of the non-adhesive composite material and the coating method, but is generally 5 to 50 μm, preferably about 10 to 30 μm by spray coating or the like. If the aim is to increase the film thickness using a powder coating, the electrostatic coating method can be used to achieve a thickness of 20 μm to 20 μm.
A coating having a thickness of 0.3 to 10 mm can be formed by a rotation lining method of 00 μm.

The firing conditions in the third step are appropriately selected depending on the type (composition, melting point, etc.) of the fluoropolymer of the primer layer and the top layer thereon, but are generally higher than the melting points of both fluoropolymers. Fired at temperature. The sintering time varies depending on the sintering temperature, but is 5 minutes to 3 hours, preferably 10 to
It takes about 30 minutes. For example, PTFE, PFA, FE
When coating with P or the like, firing is performed at 320 to 400 ° C, preferably 350 to 400 ° C.

Next, a technique for producing a non-adhesive composite material by applying the functional group-containing fluorine-containing ethylenic polymer in the form of a film will be described.

The advantages applied in the form of a film are as follows.

A film made of a functional group-containing fluorine-containing ethylenic polymer can be bonded to a hot-melt adhesive by thermocompression bonding by sandwiching it on or between substrates without the need for an indispensable applicator. Is also advantageous.

Further, since a uniform adhesive layer is formed on the entire surface of the base material, uniform adhesive strength without uneven bonding is obtained, and it is possible to cope with a base material having no compatibility or poor compatibility.

Further, it can be used after being cut into various shapes, and the work environment is good with less work loss and the cost is advantageous.

The fluorine-containing polymer film of the present invention is preferably a fluorine-containing polymer film obtained by molding the above-mentioned functional group-containing fluorine-containing ethylenic polymer, and is subjected to surface treatment and use of a general adhesive. If not, it can be adhered to a variety of other substrates, thereby imparting the excellent properties of the fluoropolymer to the substrate.

Among the functional group-containing fluoropolymers, it is possible to produce an adhesive film using various adhesives according to the purpose of the non-adhesive composite material, the film production process and the adhesion method. Adhesive film itself has heat resistance, chemical resistance, mechanical properties, etc. in addition to non-adhesiveness. Efficient film formation, such as melt molding, is possible. And the polymer (II) (reactive PFA or reactive PFA) can be melted by various thermocompression bonding methods and can be firmly and cleanly bonded to various substrates. (Reactive FEP) or the polymer (III) (reactive ETFE)
Is preferred. As the functional group, a hydroxyl group is particularly preferable from the viewpoint of heat resistance.

The thickness of the fluoropolymer film is selected depending on the use of the non-adhesive composite material, and is not particularly limited.
10 to 3000 μm is used, preferably 20
To 500 μm, particularly preferably 40 to 300 μm.

A film that is too thin requires a special manufacturing method, is difficult to handle when performing an adhering operation, and is liable to cause wrinkles, breakage, and poor appearance.
In some cases, the mechanical strength, chemical resistance, and weather resistance are insufficient. Films that are too thick are disadvantageous in terms of cost and workability when joining and integrating.

In the present invention, the fluorine-containing polymer film may be used alone, or the above-mentioned fluorine-containing ethylenic polymer film having a functional group (adhesive layer) and the fluorine-containing ethylene film having no or no functional group may be used. It can also be applied in the form of a fluoropolymer laminated film obtained by laminating a hydrophilic polymer film (surface layer).

That is, on one side, a layer made of a functional group-containing fluorine-containing ethylenic polymer gives adhesion to another base material, and on the other side, a layer made of a general fluorine-containing polymer is used. . The surface of the functional group-containing fluorine-containing ethylenic polymer is brought into contact with a base material and adhered by an operation such as thermocompression bonding, so that the fluorine-containing polymer has excellent non-adhesion, antifouling properties, low friction properties, and weather resistance. Excellent properties such as heat resistance, chemical resistance, and electrical properties (high-frequency electrical insulation) can be imparted to the composite material.

The thickness of the two-layer fluoropolymer laminate film of the present invention is selected depending on the use of the non-adhesive composite material, and is not particularly limited.
It is 5000 μm, preferably 40 to 1000 μm, particularly preferably 100 to 500 μm.

The thickness of each layer is 5 to 1000 μm for the adhesive layer,
A fluoropolymer layer (surface layer) having a thickness of about 15 to 4995 μm can be used, preferably an adhesive layer of 10 to 500 μm,
Surface layer 30 to 990 μm, particularly preferably adhesive layer 10
２００200 μm, surface layer 90-490 μm.

After the film for the adhesive layer is adhered to the base material, the film for the surface layer may be covered.

In the functional group-containing fluoropolymer film,
It is also possible to add appropriate reinforcing agents, fillers, stabilizers, ultraviolet absorbers, pigments and other additives as long as the properties are not impaired. With such additives, it is also possible to improve thermal stability, surface hardness, abrasion resistance, weather resistance, chargeability, and the like.

The fluoropolymer film of the present invention may be prepared by a hot-melt method, an extrusion method, a cutting method, a solvent casting, a powder, an aqueous or organic solvent, depending on the type of the polymer used and the shape of the target film. It can be obtained by various methods such as a method of obtaining a film by forming a continuous film after coating the dispersion.

For example, a polymer made of the reactive PTFE, which is difficult to melt-mold, can be molded by compression molding, extrusion molding (ram extrusion, paste extrusion and rolling), and the like. For polymers that can be melt-molded such as ETFE and the like, compression molding, extrusion molding and the like are employed. Melt extrusion molding is a preferred method particularly from the viewpoint of productivity and quality.

[0118] The bonding and integration of the laminated film are carried out by laminating the respective forming films for the adhesive layer and the surface layer and compressing them, coating one of the forming films on the other, and multi-layer coextrusion. Thus, a method of achieving joining and integration at the same time as film formation can be adopted, and among them, a multilayer coextrusion molding method is preferable in terms of productivity and quality.

The adhesion of the functional group-containing fluoropolymer film to the substrate is achieved by heat activation by heating or the like, and more preferably hot-melt adhesion. Typical bonding methods include a hot roll method and a hot press method. In addition, there are a high frequency heating method, a micro method, a vacuum pressure bonding method (such as a vacuum press), a pneumatic method, and the like. It can be appropriately selected depending on the state and type.

Examples of the substrate to which the functional group-containing fluorine-containing ethylenic polymer can adhere include metal-based substrates, ceramic-based substrates, and synthetic resin-based substrates.

The metal of the metal-based substrate includes metals and alloys of two or more metals, and metal salts such as metal oxides, metal hydroxides, carbonates and sulfates. Among them, metals, metal oxides, and alloys are more preferable in terms of adhesiveness.

Specific examples of the metal-based material include metals, metal compounds such as aluminum, iron, nickel, titanium, molybdenum, magnesium, manganese, copper, silver, lead, tin, chromium, beryllium, tungsten, and cobalt; And alloys composed of two or more kinds.

Specific examples of alloys include carbon steel, Ni steel,
Cr steel, Ni-Cr steel, Cr-Mo steel, stainless steel,
Alloy steel such as silicon steel, permalloy, Al-Cl, Al
-Mg, Al-Si, Al-Cu-Ni-Mg, Al-
Aluminum alloys such as Si-Cu-Ni-Mg, brass, bronze (bronze), copper alloys such as silicon bronze, silicon brass, nickel silver, nickel bronze, nickel manganese (D
Nickel), nickel-aluminum (Z nickel),
Nickel alloys such as nickel-silicon, monel metal, constantan, nichrome inconel, and Hastelloy are included.

Further, as for aluminum-based metals, pure aluminum, oxides of aluminum, Al-Cu-based metals,
Al-Si, Al-Mg and Al-Cu-Ni-
Casting or wrought aluminum alloys such as Mg-based, Al-Si-Cu-Ni-Mg-based alloys, high-strength aluminum alloys, and corrosion-resistant aluminum alloys can be used.

Further, as the iron-based metal, pure iron, iron oxide, carbon steel, Ni steel, Cr steel, Ni-Cr steel, Cr-M
o steel, Ni-Cr-Mo steel, stainless steel, silicon steel,
Permalloy, insensitive magnetic steel, magnet steel, cast irons and the like can be used.

For the purpose of preventing metal corrosion, etc.
Electroplating, hot-dip plating, chromizing,
Applying siliconizing, calorizing, sheradizing, thermal spraying, etc. to coat other metals, forming phosphate coating by phosphate treatment, forming metal oxide by anodic oxidation or heat oxidation Or can be adhered to substrates that have been subjected to electrochemical corrosion protection.

Further, for the purpose of further improving the adhesiveness, the surface of the metal substrate is subjected to a chemical conversion treatment with phosphate, sulfuric acid, chromic acid, oxalic acid, etc., sand blast, shot blast, grit blast, horning, Surface roughening treatment such as paper scratch, wire scratch, and hair line treatment may be performed, and coloring, printing, etching, etc. may be performed on the metal surface for the purpose of design.

Further, in the case of the above-mentioned aluminum or aluminum alloy base material, the surface thereof is subjected to anodic oxidation using caustic soda, oxalic acid, sulfuric acid, and chromic acid for the purpose of corrosion prevention, surface hardening, and improvement of adhesion. An oxide film formed by performing the process (alumite) or a material subjected to the above-described surface treatment can also be used.

Further, in the same manner as described above, a material obtained by plating the surface with another metal, for example, a hot-dip galvanized steel sheet, an alloyed hot-dip galvanized steel sheet, an aluminum-plated steel sheet, a zinc-nickel-plated steel sheet, a zinc-aluminum steel sheet, etc.
Those coated with another metal by a thermal spraying method, those formed with an oxide film by a chromic acid or phosphoric acid chemical conversion treatment or heat treatment, and those subjected to an electrical corrosion protection method (for example, galvanic steel sheet) may be used.

Examples of the ceramic base include glass, pottery, and porcelain.

The composition of the glass is not particularly limited, and examples thereof include quartz glass, lead glass, non-alkali glass, and alkali glass.

Examples of the synthetic resin base include acrylic resin, polycarbonate, heat-resistant engineering plastic, and thermosetting resin.

As the base material of the non-adhesive composite material of the present invention,
Although all of the above-mentioned base materials can be employed, particularly those often used in metal base materials include, for example, cold-rolled steel sheets,
Plated steel sheet, for example, Zn-plated steel sheet or Zn alloy-plated steel sheet, Al-plated steel sheet or Al-alloy-plated steel sheet, Cr-plated steel sheet (TFS), Ni-plated steel sheet, C
Examples include u-plated steel sheets, galvanium steel sheets, and the like, aluminum sheets, titanium sheets, stainless steel sheets, and the like.

In addition, ceramics-based glass, synthetic resin-based acrylic resin, polycarbonate, and the like are usually used in portions where transparency is required.

[0135] Some final products using the non-adhesive composite material are difficult to process after forming a coating film or the like. In such a case, the base material is used as the shape of the final product. It is preferable to keep it.

The composite material of the present invention is firstly characterized in that the fluorine-containing resin on the surface has excellent non-adhesiveness.
Second, since the fluororesin is applied to the substrate with good adhesiveness, third, the fluororesin has good transparency (design), heat resistance, antifouling property, and water / oil repellency. It can be used for various devices and instruments since it has the above.

[0137] Preferable equipments and instruments which can use the non-adhesive composite material of the present invention and parts thereof are specifically listed below by field, but are not limited thereto.

[1] Cooking Appliances and Cooking Utensils Cooking appliances and utensils often use adhesive oils and foodstuffs, and are particularly required to be non-adhesive. Hereinafter, representative examples thereof will be given, but the present invention is not limited thereto.

Jar and Pot (a) The inner surface and inner lid of an electric pot including an electric water heater and the like.

In these, the non-adhesiveness (antifouling property against scale), hot water resistance and antibacterial property of the composite material of the present invention can be particularly effectively utilized.

(B) The inner surface and inner lid of a gas and electric rice cooker, a rice cooker having a rice washing mechanism, and the like.

In these, the non-adhesiveness (against rice grains and scorch) and heat resistance of the composite material of the present invention can be particularly effectively utilized.

Cooking utensils (a) Surfaces of frying pans, bats, manual mixers for cooking and household use, sires, knives, bread moulders, reverse sheets for bread, split rounding machines for bread, and the like, and inner surfaces of balls and rice bins, etc. In the case of a mixer, its wings.

In these, the non-adhesiveness (to combustible and sticky stains), antifouling property and heat resistance of the composite material of the present invention can be particularly effectively utilized.

(B) Inner surfaces and blades of electric food processors such as household electric food grinders, electric food crushers, kitchen electric meat grinders, electric kitchen blenders and electric kitchen mixers.

In these, the non-adhesiveness (to vegetables and meat juices) and antifouling properties of the composite material of the present invention can be particularly effectively utilized.

Gas table (a) Top plate, side and surface of a gas stove such as a gas stove with a built-in gas cylinder, and the surface of their juice tray cover.

In these, the non-adhesiveness (to oil stains), heat resistance and transparency (designability with respect to color, pattern, etc.) of the composite material of the present invention can be particularly effectively utilized.

Oven ranges including toasters, ranges, etc. (a) Ovens such as commercial ovens, electric ovens (including commercial ones), electric ovens with commercial storage, commercial cooking ovens, commercial cooking ovens, etc. Kitchen ovens), commercial baking ovens, automatic ovens for home use such as baking ovens, toasters, electric oven toasters such as bread toasters, and commercial microwave ovens.
The inner surface (metal part) of a microwave oven such as a microwave oven and a pan for a microwave oven.

In these, the non-adhesiveness (to oil and scorch), antifouling property and heat resistance of the composite material of the present invention can be particularly effectively utilized.

(B) The inner surfaces of the doors of the microwave ovens described in (a) above.

In these, in the case of the non-adhesiveness, heat resistance, transparency, and microwave oven of the composite material of the present invention, the energy ray resistance can be particularly effectively utilized.

Pots and Pots (a) Pots such as glass pots, enamel pots, aluminum pots, electric frying pans, electric tempura pots, electric pressure pots and electric pressure stew pots, and inner surfaces of pots and the like.

In these, the non-adhesiveness of the composite material of the present invention (burn-out, sticky stain, oil in the case of the above-mentioned frying pan and tempura pan) and heat resistance can be particularly effectively utilized.

(B) Pots and pot lids mentioned in (a) above.

In these, in addition to the above-mentioned properties (a) of the composite material of the present invention, transparency can be particularly effectively utilized.

Garbage Disposal Machine The inside of a cooking waste (waste) treatment machine such as a household cooking waste disposer or a food waste composting device.

In these, the non-adhesiveness and antifouling properties of the composite material of the present invention can be particularly effectively utilized.

Other heating cooking equipment (a) Heating surface and lid of hot plate.

In these, the non-adhesiveness (with respect to scorching and sticking dirt), heat resistance and transparency of the lid of the composite material of the present invention can be particularly effectively utilized.

(B) A cooking surface of an electromagnetic cooker such as an electromagnetic range and a stove.

In these, the non-adhesiveness, heat resistance and transparency of the composite material of the present invention can be particularly effectively utilized.

(C) The inner surface of an electric steamer or the like, such as a commercial food steamer, and the inside of a door or a lid.

In these, the non-adhesiveness, antifouling property, heat resistance and steam resistance of the composite material of the present invention can be particularly effectively utilized.

(D) The inner surface and lid of a boiled noodle bowl for business use.

In these, the non-adhesiveness, antifouling property, heat resistance and hot water resistance of the composite material of the present invention can be particularly effectively utilized.

(E) Inner surface, inner surface (metal part), inner surface of door, bread for cooking range, etc.

In these, the non-adhesiveness (against burning and sticking dirt) and heat resistance of the composite material of the present invention can be particularly effectively utilized.

(F) Inner surfaces of commercial tableware, dishwashers and the like.

In these, the non-adhesiveness, antifouling property and hot water resistance of the composite material of the present invention can be particularly effectively utilized.

(G) The inner surface of the commercial storage and the inner surface of the door.

In these, the non-adhesiveness, antifouling property, transparency and heat resistance of the composite material of the present invention can be particularly effectively utilized.

Further, other cooking appliances to which the composite material of the present invention can be preferably applied include the following.

As the above-mentioned (b), porridge cookers, rice warmers, and the like.

Examples of the items in the range (a) include various cooking utensils (such as for slicing), cooking utensils, cooking machinery and utensils, cooking devices (such as for food), cooking iron plates, cooking equipment and facilities, and barbecue utensils. , Food processing machinery / equipment (e.g., with a pressurizing device), chocolate manufacturing machine and associated temperature control equipment for raw material processing.

Examples of the range of (b) include a synthetic cooker, a vegetable slicer, a food slicer, a peeler, a rhinoceros cutter, a food cutter, a meat chopper, a meat slicer, a meat tenderizer, a cutter mixer, a mixer, and a food mixer. , Bren,
Apple cooking machine, continuous egg breaking machine, tofu cutting food molding machine, breading machine, vegetable washing machine, etc.

The above range includes a low range,
Table stove, electric range, gas range, gas table, electric table, etc.

Examples of the above-mentioned range include a gas salamander, an electric salamander, a convection oven, a boiler for making bread, and the like.

The above range includes a wok, a one-handed pan, a two-handed pan, a gas fryer, a tempura fryer, an oil filter unit, a buckwheat pan, a rotating pan, and the like.

Examples of the above range include gyoza, electromagnetic low range, gas evaporator, and steam evaporator.

[2] OA-related equipment In addition to the parts using toner, OA-related equipment has many parts that are particularly susceptible to adhesion of dust and the like. Hereinafter, representative examples thereof will be given, but the present invention is not limited thereto.

(1) Electronic copiers, facsimile machines, word processors, and other devices having a printing device It is preferable to use toner or as a material for a portion to which toner can adhere. For example:

Fixing roll (a) Monochrome base material: aluminum or SUS Functional group-containing fluoropolymer: reactive PFA or FEP Application form: paint, tube or film When the composite material of the present invention is used, toner Non-stick, durable,
A fixing roll having excellent heat resistance can be obtained, and since the functional group-containing fluoropolymer itself has excellent adhesiveness, it is not necessary to provide a primer, and the processability is excellent.

(B) Color / monochrome shared Base material: Metal coated with silicone rubber or urethane rubber, and coated with release silicone oil Functionalized fluorine-containing polymer: Reactive PFA or FE
P or reactive fluoro rubber Application form: paint, tube or sheet By using the composite material of the present invention, it is possible to obtain a fixing roll excellent in toner non-adhesion, paper release property, elasticity and abrasion resistance. Further, since the functional group-containing fluoropolymer has excellent adhesiveness, it is not necessary to provide a primer layer, and therefore, the processability is excellent.

Pressure roll (for both color and monochrome) Base material: metal coated with silicon rubber or urethane rubber Fluoropolymer containing functional group: reactive PFA or FE
P or reactive fluororubber Application form: paint, tube or sheet By using the composite material of the present invention, it is possible to obtain a pressure roll excellent in toner non-adhesion, elasticity, and abrasion resistance. Since the group-containing fluoropolymer itself has excellent adhesiveness, it is not necessary to provide a primer layer, and the processability is good.

Charging roll (color / monochrome) Base material: urethane rubber Functional group-containing fluoropolymer: reactive fluororubber Application form: paint When the composite material of the present invention is used, toner non-adhesiveness, conductive It is possible to obtain a charging roll with excellent controllability, uniformity of resistance value, release property of paper, and abrasion resistance, and it is not necessary to provide a primer layer because the functional group-containing fluorine itself has excellent adhesiveness. Good and good workability.

Transfer roll (for both color and monochrome) Base material: urethane rubber Functional group-containing fluoropolymer: reactive fluororubber Application form: paint When the composite material of the present invention is used, toner non-adhesiveness, conductive Transfer roller with excellent controllability, uniformity of resistance value, releasability of paper, abrasion resistance and elasticity, and a functional group-containing fluoropolymer itself has excellent adhesiveness, so the primer layer Need not be provided, and the manufacturing processability is good.

Transfer belt (for both color and monochrome) Base material: Polyimide Functional group-containing fluoropolymer: Reactive PFA or FE
P or reactive fluororubber Application form: film or paint By using the composite material of the present invention, it is possible to obtain a transfer belt excellent in non-adhesiveness of toner, controllability of conductivity, uniformity of resistance value and abrasion resistance. It is not necessary to provide a primer layer because the functional group-containing fluoropolymer itself has excellent adhesiveness,
Excellent workability due to excellent processability.

Separating claw and fixing bearing (surface) Base material: heat-resistant resin (for example, polyphenylene sulfide, polyamideimide, polyoxymethylene (POM))
Or polyetheretherketone (PEEK)
A functional group-containing fluoropolymer: a reactive fluororubber Application form: paint When the composite material of the present invention is used, a separation claw which is excellent in toner non-adhesion, abrasion resistance, paper feedability, and hardly damages a roll; A fixing bearing excellent in low friction, abrasion resistance and heat resistance can be obtained, and the functional group-containing fluoropolymer has excellent adhesiveness, so that a primer layer is not required and the processability is excellent.

Discharge Roller and Discharge Guide Substrate: Resin (for example, polyphenylene sulfide, polyamide imide, polyether imide, POM or P
EEK, etc.) Functional group-containing fluoropolymer: reactive PTFE or reactive PFA or FEP Application form: paint When the composite material of the present invention is used, a paper discharge roller having excellent toner non-adhesiveness and abrasion resistance and You can get a paper ejection guide,
Since the functional group-containing fluoropolymer has excellent adhesiveness, it does not require a primer layer and is excellent in processability.

Further, the composite material of the present invention can be used for the following parts for OA-related equipment by utilizing its good transparency.

CRT, liquid crystal panel and plasma display (front) Base material: glass Fluoropolymer containing functional group: reactive PFA or FE
P or reactive ETFE Application form: Film or paint When this composite material is used, a CRT with excellent transparency, non-adhesion and antifouling properties against dust and fingerprints, and scattering prevention properties against collisions and drops when carrying, etc. In addition, a liquid crystal panel and a plasma display can be obtained, and there is no need to provide a primer layer, and the processability is excellent.

Contact glass (surface) Substrate: glass Functional group-containing fluoropolymer: reactive PFA or FE
P or reactive ETFE Application form: paint When the composite material of the present invention is used, a contact glass having excellent transparency, non-adhesion to dust and fingerprints and antifouling property, non-adhesion to correction liquid, ink and the like can be obtained. Since the functional group-containing fluoropolymer has excellent adhesiveness, there is no need to provide a primer layer, and the processability is excellent.

[3] Building Materials There are also materials and the like for which building materials are required to be non-adhesive. Hereinafter, examples of each building material will be described while referring to the effects achieved in addition to the non-adhesiveness.

Architectural glass In addition to architectural glass, safety glass (explosion-proof glass), polished architectural glass (window glass), stained glass windows, windshield glass, glass having a function of adjusting light-shielding ratio, and the like.

In these, the transparency, anti-scattering property, antifouling property and flame retardancy of the composite material of the present invention can be particularly effectively utilized.

Exterior wall material, roof material and interior / exterior material (made of metal) (a) In addition to metal exterior construction materials for walls, metallic building materials, interior / exterior panels made of metal for construction, metal fences, metal tiles and metals And building boards.

(B) In addition to metal roofing materials, solar system built-in roofing materials and the like.

(C) In addition to metal doors, metal grids, metal shutters, metal fences, metal pouches (for construction), and the like.

(D) In addition to metal blinds, metal blinds (for outdoor and outdoor use), sashes, shutters, etc.

(E) Metal ceiling boards, metal floor tiles, metal wall boards coated with a vinyl chloride decorative sheet on the surface, and the like.

(F) Other metal parking facilities for automobiles, general metal artworks, etc.

In these, the weather resistance, antifouling property, and transparency (design) of the composite material of the present invention can be particularly effectively used.

Outer wall material, roof material and interior / exterior material (made of nonmetallic inorganic material) (a) Concrete block to which segment-shaped or tiled or sliced natural stone is pasted, concrete-shaped pavement plate having segment-shaped or surface made of rubber material,
A reinforced concrete plate such as GRC (fiber-reinforced concrete wall material).

(B) A cement extruded product such as cement having a tile-like surface.

(C) Architectural stones such as artificial stones.

(D) architectural tiles, raster glaze tiles,
Tiles such as floor tiles, ceramic tiles and ceramic border tiles.

(E) Non-metallic building exterior materials, building materials,
Architectural and wall cladding, such as architectural panels and architectural wall tiles.

(F) Roofing materials such as ceramic roofing materials with a built-in solar system.

(G) Gravestones such as tombstones and tombstones.

(H) Stone, concrete or marble statues, figurines, statues, bustes and other art objects.

In these, the composite material of the present invention has weather resistance, antifouling property, waterproof property, transparency (design), workability,
Adhesiveness, wear resistance for (c), and weathering prevention for (g) and (h) can be particularly effectively utilized.

Outer wall material, roof material and interior / exterior agent (resin) (a) Floor plate, ceiling plate, etc.

(B) Grids, blinds and doors, including those for indoor use.

(C) Plastic panels for concrete.

(D) Gaskets for construction.

(E) Curtains with a film for preventing insects, blocking ultraviolet rays and heat rays and preventing scattering, covers, sunshades and the like.

(F) Stone or a polyvinyl chloride flooring material with a stone pattern on the surface.

(G) A plastic roofing material with a built-in solar system.

(H) Combination type polyvinyl chloride tiles having gaps and being drainable.

(I) A sash made of synthetic resin.

(J) Counters, furniture, thresholds, wall boards,
Backsplash, fir tree, veneer for fencing walls such as bathrooms and shower stalls.

(K) Assembling sets such as washrooms, shower rooms, toilet rooms, toilets, portable simple toilets and simple public toilets.

(L) Assembly set of sauna room, garage, etc.

In these, the composite material of the present invention has weather resistance, antifouling property, transparency (design), water resistance, workability,
Adhesion can be used particularly effectively.

Exterior wall materials and roof materials (wood) (a) Wood for construction of household tools, veneer boards, wood boards for construction such as wood panels and decorative boards.

(B) Wooden fences, doors for indoor installation, wooden window frames, and the like.

(C) A wooden building material in which a rubber elastic material is attached to the back surface of a plywood.

(D) Wooden architectural assembly set.

Also in these, the weather resistance, antifouling property, transparency (designability), water resistance, workability and adhesion of the composite material of the present invention can be particularly effectively utilized.

Furniture (a) Glass showcase, wagon, wagon for product display, panel for product display, product display stand, wagon for meal transportation, flower stand, etc.

(B) Shelf, sill, desk, settee and shelves for storage.

(C) Telephone box made of metal or various base materials.

Also in these, the antifouling property, transparency (design property), water resistance, and workability of the composite material of the present invention, and (c) the anti-adhesive property, adhesiveness, and abrasion resistance are further evaluated. It can be used particularly effectively.

(A) Gas table, range hood, ventilation hood, etc.

(B) Metal ducts for central heating, ventilation equipment, air conditioning equipment, etc.

In these, the antifouling property, workability and adhesion of the composite material of the present invention can be particularly effectively utilized.

Housing Equipment (a) System kitchen including kitchen range (oven), sink, etc.

(B) Electricity, gas and petroleum water heaters (including instantaneous water heaters).

(C) Wash basins such as wash basins for installation, vanities, household hair washer, vanities having a hair-washing function, wash basins for wash basins, wash basins with a top plate, and window-type wash basins.

(D) toilets such as flush toilets, compact toilets for cars, urinals, urinal component measuring device and infant toilets, toilets with a hot water washing function, deodorizing devices and toilet seats, And a water tank for flush toilets.

In these, the antifouling property, design property (transparency), workability, abrasion resistance and antibacterial property of the composite material of the present invention can be effectively utilized.

(E) Bath tubs such as linings used in bathrooms including shower stalls, home saunas and commercial sauna baths, bathtubs such as simple bathtubs and bathtubs with bubble generators, handles attached to the bathtubs, and bathrooms such as soap storage furniture.

(F) Other escalators, elevators (including those for private houses) and the like.

In these, the antifouling property, design property (transparency), workability, and the (a)
(B) and (e) are more heat resistant, (c) to (e) are more wear resistant, (f)
Can be used particularly effectively for lubrication or rust prevention.

Civil engineering (a) Signs such as signs for bus stops, signs for streets, and signs for mounting guardrails.

(B) Traffic lights such as issue-type traffic lights and mechanical traffic lights.

(C) Guardrails made of various base materials.

(D) Electric poles made of various base materials.

(E) Soundproof walls.

(F) Others Plastic concrete formwork for construction or construction.

In these, the composite material of the present invention has weather resistance, antifouling property, transparency, workability, adhesion, and the above (f).
With regard to, the releasability can be used particularly effectively.

[4] Others Ventilation fan Applicable parts: blade, frame, cover Base material: PP, aluminum, galvanium steel sheet, galvanized steel sheet Functional group-containing fluoropolymer: reactive PTFE, reactive P
FA or FEP, reactive ETFE Application form: paint, film Effect: non-adhesiveness to oil stains, stickiness, transparency,
Creativity

Refrigerator Applicable places: exterior surface, interior surface Base material: PP, aluminum, SUS, galvanium steel sheet, galvanized steel sheet Functional group-containing fluoropolymer: reactive PFA or FE
P, reactive ETFE Application form: paint, film Effect: non-adhesiveness to foods and seasonings, wipe-off property for stickiness, transparency, design, processability

[0255]

EXAMPLES Next, the non-adhesive composite material of the present invention will be described with reference to production examples and examples, but the present invention is not limited to these examples.

Production Example 1 (Production of an Aqueous Dispersion Consisting of PFA Having a Hydroxyl Group) A dispersion equipped with a stirrer, a valve, a pressure gauge and a thermometer was prepared.
15 liters of pure water in a 1 liter glass-lined autoclave
00 ml, ammonium perfluorooctanoate 9.0
g, and the atmosphere was sufficiently replaced with nitrogen gas. Then, vacuum was applied and 20 ml of ethane gas was charged.

Then, perfluoro- (1,1,9,9
-Tetrahydro-2,5-bistrifluoromethyl-
3,6-dioxa-8-nonenol) (formula (7))

[0258]

Embedded image

Then 3.8 g of perfluoro (propyl vinyl ether) (PPVE) 18 g were injected under pressure using nitrogen gas, and the temperature in the system was maintained at 70 ° C.

While stirring, tetrafluoroethylene gas (TFE) was injected so that the internal pressure became 8.5 kgf / cm ² G.

Next, a solution in which 0.15 g of ammonium persulfate was dissolved in 5.0 g of water was injected under pressure using nitrogen to start the reaction.

Since the pressure decreases with the progress of the polymerization reaction, when the pressure decreases to 7.5 kgf / cm ² G, the pressure is increased again to 8.5 kgf / cm ² with tetrafluoroethylene gas, and the pressure reduction and pressure increase are repeated. .

While continuing the supply of tetrafluoroethylene, about 40% of tetrafluoroethylene gas was supplied from the start of polymerization.
Every time the g was consumed, 1.9 g of the fluorine-containing ethylenic monomer having a hydroxy group (compound represented by the formula (7)) was injected three times in total (5.7 g in total) to carry out polymerization. Continue, and add about 16
When 0 g had been consumed, the supply was stopped and the autoclave was cooled to release unreacted monomers, yielding 1702 g of a bluish translucent aqueous dispersion.

The concentration of the polymer in the obtained aqueous dispersion was 10.9%, and the particle diameter measured by the dynamic light scattering method was 70.7%.
nm.

Also, a part of the obtained aqueous dispersion was subjected to freeze coagulation, and the precipitated polymer was washed and dried to isolate a white solid. The composition of the obtained copolymer is ¹⁹ F-N
According to MR analysis and IR analysis, TFE / PPVE / (a fluorine-containing ethylenic monomer having a hydroxyl group represented by the formula (7)) = 97.7 / 1.2 / 1.1 mol%.

The infrared spectrum was 3620-3400.
Characteristic absorption of -OH was observed at cm ^-1 .

According to DSC analysis, Tm = 310 ° C., DT
GA analysis revealed a 1% thermal decomposition temperature Td = 368 ° C. 2mm, length 8mm using a Koka type flow tester
Nozzle, preheat at 372 ° C for 5 minutes, load 7kgf
The melt flow rate was measured at 12 / cm ² .
It was 0 g / 10 min.

Production Example 2 (Production of an Aqueous Dispersion Consisting of PFA Having a Hydroxyl Group)
l, 9.0 g of ammonium perfluorooctanoate was added, and the atmosphere was sufficiently replaced with nitrogen gas, and then evacuated, and 20 ml of ethane gas was charged.

Next, perfluoro- (1,1,9,9
-Tetrahydro-2,5-bistrifluoromethyl-
1.9 g of 3,6-dioxa-8-nonenol (compound of the formula (7)) and 16.1 g of perfluoro (propyl vinyl ether (PPVE)) were injected by using nitrogen gas, and the temperature in the system was maintained at 70 ° C. Was.

While stirring, tetrafluoroethylene (TFE) was injected so that the internal pressure became 8.5 kgf / cm ² G.

Next, a solution in which 0.15 g of ammonium persulfate was dissolved in 5.0 g of water was injected under pressure using nitrogen to start the reaction.

Since the pressure decreases with the progress of the polymerization reaction, when the pressure decreases to 7.5 kgf / cm ² G, the pressure is reduced again to 8.5 kgf / cm ² G with tetrafluoroethylene gas. Repeated.

Each time 40 g of tetrafluoroethylene gas was consumed from the start of polymerization while continuing to supply tetrafluoroethylene, the above-mentioned fluorine-containing ethylenic monomer having a hydroxyl group (compound represented by formula (7)) was used. The polymerization was continued by injecting 0.95 g a total of 3 times (total 2.85 g), and the amount of tetrafluoroethylene was 160
The feed was stopped at the time when the g had been consumed, the autoclave was cooled, and unreacted monomer was discharged. 1692 g of an aqueous dispersion
I got The concentration of the polymer in the obtained aqueous dispersion was 1
0.6% and the particle size was 76.8 nm.

In the same manner as in Production Example 1, a part of the aqueous dispersion was taken and a white solid was isolated.

When the white solid obtained in the same manner was analyzed, TFE / PPVE / (the fluorine-containing monomer having a hydroxyl group of the formula (7)) = 98.3 / 1.1 / 0.6 mol% Tm = 310 ° C. 1% Thermal decomposition temperature Td = 374 ° C. Melt flow rate: 9.5 g / 10 min The infrared spectrum was 3620 to 3400 cm ⁻¹ .
Characteristic absorption of OH was observed.

Production Example 3 (Synthesis of aqueous dispersion of PFA having no functional group) In Production Example 1, the perfluoro- (1,1,9,9-tetrahydro-2,5-bistrifluoromethyl-3 , 6-
Emulsion polymerization was carried out in the same manner as in Production Example 1 except that dioxa-8-nonenol) (the compound represented by the formula (7)) was not used, to obtain 1662 g of an aqueous dispersion of PFA containing no functional group.

The concentration of the polymer in the aqueous dispersion was 9.7.
%, And the particle diameter was 115 nm.

A white solid was isolated and analyzed in the same manner as in Production Example 1.

TFE / PPVE = 98.9 / 1.1mo
1% Tm = 310 ° C. 1% Thermal decomposition temperature Td = 479 ° C. Melt flow rate = 19.2 g / 10 min In the infrared spectrum, no characteristic absorption of —OH was observed.

Production Example 4 (Synthesis of PFA Having Hydroxyl Group) Into a 6-liter glass-lined autoclave equipped with a stirrer, a valve, a pressure gauge, and a thermometer, 1500 ml of pure water was placed.
After sufficiently purging with nitrogen gas, vacuum is applied and 1,2-dichloro-1,1,2,2-tetrafluoroethane (R-1
14) 1500 g was charged.

Next, perfluoro- (1,1,9,9
-Tetrahydro-2,5-bistrifluoromethyl-
5.0 g of 3,6-dioxa-8-nonenol (compound represented by the formula 7), 130 g of perfluoro (propyl vinyl ether) (PPVE), and 180 g of methanol were press-fitted using nitrogen gas, and the temperature in the system was reduced. Maintained at 35 ° C.

While stirring, tetrafluoroethylene gas (TFE) was injected so that the internal pressure became 8.0 kgf / cm ² G. Then, 0.5 g of a 50% methanol solution of di-n-propylperoxydicarbonate was injected under pressure using nitrogen to start the reaction.

[0283] Since the pressure lowered with the progress of the polymerization reaction, re-pressurized with tetrafluoroethylene gas at the time when decreased to 7.5 kgf / cm ² G to 8.0 kgf / cm ^2, the step-down was repeated booster .

While continuing the supply of tetrafluoroethylene, about 60% of tetrafluoroethylene gas was supplied from the start of polymerization.
Each time g of the polymer is consumed, 2.5 g of the above-mentioned fluorine-containing ethylenic monomer having a hydroxy group (the compound represented by the formula (7)) is pressed in 9 times in total (22.5 g in total) to carry out polymerization. Continued, and about 6% of tetrafluoroethylene
At the time of the consumption of 00 g, the supply was stopped, the autoclave was cooled, and unreacted monomer and R-114 were released.

The obtained copolymer was washed with water and methanol, and then dried under vacuum to obtain 710 g of a white solid. The composition of the obtained copolymer was 19F-NM.
By R analysis and IR analysis, TFE / PPVE / (formula (7)
= 97.0 / 2.0 / 1.0 mol%). In addition, the infrared spectrum shows -O at 3620 to 3400 cm ^-1 .
H characteristic absorption was observed. Tm = 3 by DSC analysis
05 ° C., 1% thermal decomposition temperature Td = 37 by DTGA analysis
5 ° C. 2m in diameter using a Koka type flow tester
Using a nozzle having a length of 8 mm and a length of 8 mm, the melt flow rate was measured at 372 ° C. for 5 minutes under a load of 7 kgf / cm ² and found to be 32 g / 10 min.

Production Example 5 (Synthesis of PFA having a hydroxyl group) Into a 6-liter glass-lined autoclave equipped with a stirrer, a valve, a pressure gauge, and a thermometer, 1500 ml of pure water was placed.
After sufficiently purging with nitrogen gas, vacuum is applied and 1,2-dichloro-1,1,2,2-tetrafluoroethane (R-1
14) 1500 g was charged.

Then, perfluoro- (1,1,9,9
-Tetrahydro-2,5-bistrifluoromethyl-
2.5 g of 3,6-dioxa-8-nonenol) (formula (7)), perfluoro (propyl vinyl ether)
The reaction was started in the same manner as in Production Example 4 except that 132 g of (PPVE) and 230 g of methanol were used.
C.

While stirring, tetrafluoroethylene ethylene gas (TFE) was introduced at an internal pressure of 8.0 kgf / cm.
^It was press-fitted to ² G. Then, a 50% methanol solution of di-n-propylperoxydicarbonate was added.
The reaction was started by injecting 5 g with nitrogen.

[0289] Since the pressure lowered with the progress of the polymerization reaction, re-pressurized with tetrafluoroethylene gas at the time when decreased to 7.5 kgf / cm ² G to 8.0 kgf / cm ^2, the step-down was repeated booster .

Further, every time about 60 g of tetrafluoroethylene gas is consumed from the start of polymerization, the amount of the fluorine-containing ethylenic polymer having a hydroxy group (compound represented by the above formula (7)) to be injected is 1. 680 g of a copolymer white solid was obtained in the same manner as in Production Example 4 except that 23 g was used 9 times in total (11.10 g in total). The composition of the obtained copolymer was determined by ¹⁹ F-NMR analysis and IR analysis.
PPVE / (a fluorine-containing ethylenic monomer having a hydroxy group represented by the formula (7)) = 97.6 / 2.0 / 0.
It was 4 mol%. The infrared spectrum is 3620-
Characteristic absorption of -OH was observed at 3400 cm ^-1 . DS
C analysis revealed that Tm was 310 ° C., and DTGA analysis showed that the decomposition initiation temperature was 368 ° C. and the 1% thermal decomposition temperature Td was 375 ° C. Using a nozzle with a diameter of 2 mm and a length of 8 mm using a Koka type flow tester, preheating at 372 ° C. for 5 minutes and a load of 7
The melt flow rate measured at kgf / cm ² was 42 g / 10 min.

Production Example 6 (Synthesis of PFA containing no functional group)
Perfluoro (1,1,9,9-tetrahydro-2,
5-bistrifluoromethyl-3,6-dioxa-8-
Synthesis was performed in the same manner as in Production Example 4 except that nonenol) (the compound represented by the formula (7)) was not used, and 240 g of methanol was used, to obtain 597 g of PFA containing no functional group.

The obtained PFA was analyzed in the same manner as in Production Example 4. TFE / PPVE = 98.2 / 1.8 mol% Tm = 310 ° C. Td = 469 ° C. (1% weight loss) Melt flow rate = It was 24 g / 10 min.

Production Example 7 (Production of PFA Powder Coating Having Hydroxyl Group) The PFA powder having a hydroxyl group obtained in Production Example 4 (apparent specific gravity 0.5, true specific gravity 2.1, average particle diameter 600 microns) was used. Roller compactor (Shinto Kogyo BCS-25)
(Mold) to compress the sheet into a sheet having a width of 60 mm and a thickness of 5 mm.
Next, it was pulverized to a diameter of about 10 mm with a pulverizer, and further finely pulverized at room temperature at 11,000 rpm using a pulverizer (Cosmomizer N-1 manufactured by Nara Machinery Co., Ltd.). Next, a classifier (Shin Tokyo Machinery Co., Ltd. High Boulder 300SD)
) To remove coarse particles of 170 mesh (88-micron aperture) or more to obtain a PFA powder coating having a hydroxyl group. The apparent density of the powder was 0.7 g / ml, and the average particle size was 20 μm.

Production Example 8 (Production of PFA Powder Coating Containing No Functional Group) The PFA powder containing no functional group obtained in Production Example 6 was replaced with the PFA powder having a hydroxyl group obtained in Production Example 4 (apparent specific gravity: 0). .
6, a true specific gravity of 2.1, and an average particle size of 400 μm) to prepare a PFA powder coating in the same manner as in Production Example 7. The apparent density of the powder was 0.73 g / ml, and the average particle size was 20 μm.

Production Example 9 (Synthesis of Fluorine-Containing Polymer Using Fluorine-Free Functional Group-Containing Monomer) A 1-liter stainless steel autoclave equipped with a stirrer, a valve, a pressure gauge and a thermometer was prepared.
250 g of butyl acetate, vinyl pivalate (VPi) 3
6.4 g of 4-hydroxybutyl vinyl ether (HB
VE) 32.5 g and isopropoxycarbonyl peroxide 4.0 g were charged, cooled to 0 ° C. with ice, filled with nitrogen gas and replaced, and evacuated to obtain isobutylene (IB).
5 g and tetrafluoroethylene (TFE) 142 g were charged.

While stirring, the mixture was heated to 40 ° C. and reacted for 30 hours. When the pressure in the reaction vessel dropped to 2.0 kg / cm ² or less, the reaction was stopped. When the autoclave was cooled and unreacted gas monomers were released, a butyl acetate solution of the fluoropolymer was obtained. The polymer concentration was 45%.

The fluorinated polymer was removed from the obtained butyl acetate solution of the fluorinated polymer by a reprecipitation method, and sufficiently isolated under reduced pressure and dried to be isolated as a white solid. ^{When the} obtained fluoropolymer was analyzed by ¹ H-NMR and ¹⁹ F-NMR elemental analysis, TFE / IB / V
It was a copolymer consisting of Pi / HBVE = 44/34/15/7 mol.

Production Example 10 (Preparation of a PFA Film Having a Hydroxyl Group) 8.0 g of the white solid obtained in Production Example 4 was placed in a 100 mmφ mold, set in a press set at 350 ° C., and preheated to 30 ° C.
After performing the compression molding at 70 kg / cm ² for 1 minute, a film having a thickness of 0.5 mm was obtained.

Production Example 11 (Preparation of PFA Film Having a Hydroxyl Group) A film having a thickness of 0.5 mm was obtained in the same manner as in Production Example 10 except that the white solid obtained in Production Example 5 was used.

Production Example 12 (Preparation of PFA Film Containing No Functional Group) Production Example 6
A film having a thickness of 0.5 mm was obtained in the same manner as in Production Example 10 except that the obtained white solid was used.

Production Example 13 (Preparation of Film by Extrusion of PFA Having a Hydroxyl Group) The white solid obtained in Production Example 4 was subjected to 350-37 using a twin-screw extruder (Laboplast mill manufactured by Toyo Seiki Co., Ltd.).
Extrusion was performed at 0 ° C. to produce pellets. The pellets were extruded at 360 ° C. to 380 ° C. at a roll temperature of 120 ° C. using a single screw extruder (Laboplast Mill, Toyo Seiki Co., Ltd.) to obtain a film having a width of 10 cm and a thickness of 100 to 150 μm.

Production Example 14 (Production of Film by Extrusion of PFA Containing No Functional Group) Pellets were produced in the same manner as in Production Example 13 except that the white solid obtained in Production Example 6 was used. 10 width 10cm, thickness 100 ~ 15
A film of 0 μm was obtained.

Production Example 15 (Laminated film of PFA having hydroxyl group and PTFE) The PF having a hydroxyl group obtained in Production Example 13
The A film and the PTFE film having a thickness of 0.5 mm were overlaid and compression-molded in the same manner as in Production Example 10.

The two layers were firmly adhered to each other.

Example 1 (1) Pretreatment of base material A pure aluminum plate (A1050P) having a thickness of 1.5 mm and SUS304 having a thickness of 1.5 mm were degreased with acetone, respectively.

(2) Formation of a Primer Layer Made of a Fluoropolymer Having a Functional Group Using the aqueous dispersion made of PFA having a hydroxyl group obtained in Production Example 1, the film thickness was about 5 μm by air spray.
And dried by infrared at 90 ° C. for 10 minutes, and baked at 380 ° C. for 20 minutes.

(3) Formation of a layer (top layer) composed of a fluoropolymer having no functional group As a coating composed of a fluoropolymer having no functional group on the primer layer obtained in (2), A water-based paint composed of PTFE (Polyflon TFE Enamel EK4300CRN manufactured by Daikin Industries, Ltd.) is applied by air spray so as to have a thickness of about 20 μm, dried by infrared at 90 ° C. for 10 minutes, and then baked at 380 ° C. for 20 minutes. did.

(4) Evaluation of Adhesion The evaluation method is as follows.

(Cross-cut test) JIS is applied to the coated surface
A grid of 100 squares specified in K5400 1990, 8.5.2 is prepared, and a cellotape (adhesive tape manufactured by Nichiban Co., Ltd.) is sufficiently adhered to this surface and immediately peeled off. This peeling is performed 10 times with a new cellophane tape, and the number of cells remaining in 100 cells is evaluated. The results are shown in Table 1.

Example 2 A primer comprising a fluoropolymer having a functional group was
Except that a primer layer was formed using the aqueous dispersion of PFA having a hydroxyl group obtained in Production Example 2, a coated plate was prepared in the same manner as in Example 1, and the adhesion was evaluated. Table 1 shows the results.

Comparative Example 1 A primer layer was formed by using the aqueous dispersion of PFA having no functional group obtained in Production Example 3 in place of the primer comprising a fluoropolymer having a functional group. A coated plate was prepared in the same manner as in Example 1, and the adhesion was evaluated. Table 1 shows the results.

Examples 3 and 4 and Comparative Example 2 F was used as a coating composed of a fluoropolymer having no functional group.
Except that the top layer was formed using an aqueous paint composed of EP (Neoflon FEP dispersion ND-1 manufactured by Daikin Industries, Ltd.), Example 3 was used in Example 1, Example 4 was used in Example 2, In Comparative Example 2, a coated plate was prepared in the same manner as in Comparative Example 1, and the adhesion was evaluated. Table 1 shows the results.

Example 5 (1) Pretreatment of the base material The pretreatment was performed in the same manner as in Example 1.

(2) Formation of a primer layer composed of a fluoropolymer having a functional group The aqueous dispersion composed of PFA having a hydroxyl group obtained in Production Example 1 was applied by air spray so as to have a film thickness of about 5 μm. And dried at 90 ° C. for 10 minutes.

(3) Formation of a layer (top layer) composed of a fluoropolymer having no functional group As a coating composed of a fluoropolymer having no functional group on the primer layer obtained in the above (2). , PFA powder coating (NEOFLON PFA powder coating manufactured by Daikin Industries, Ltd.)
ACX-31) by electrostatic coating to a film thickness of 40 μm
And baked at 380 ° C. for 20 minutes.

(4) Evaluation of Adhesion Property was evaluated in the same manner as in Example 1. Table 1 shows the results.

Example 6 A primer comprising a fluoropolymer having a functional group was
Except that a primer layer was formed using the aqueous dispersion of PFA having a hydroxyl group obtained in Production Example 2, a coated plate was prepared in the same manner as in Example 5, and the adhesion was evaluated. Table 1 shows the results.

Comparative Example 3 A primer layer was formed by using the aqueous dispersion of PFA having no functional group obtained in Production Example 3 in place of the primer comprising the fluoropolymer having a functional group. A coated plate was prepared in the same manner as in Example 5, and the adhesion was evaluated. Table 1 shows the results.

[0319]

[Table 1]

Example 7 (Evaluation of Adhesion of PFA Powder Coating Having a Hydroxyl Group) (1) Preparation of Press Sheet for Adhesion Test About 4 g of the PFA powder coating having a hydroxyl group obtained in Production Example 7 having a diameter of 60 mm was prepared. It was placed in a cylindrical mold and compression molded at room temperature under a pressure of 300 kgf / cm ² using a press machine to obtain a disk-shaped cold press sheet (hereinafter, also referred to as “PFA sheet”).

(2) Pretreatment of Substrate A 100 × 100 × 1 (mm) pure aluminum plate was degreased with acetone, and then subjected to sandblasting.

(3) Preparation of adhesive sample The PFA sheet obtained in the above (1) was placed on an aluminum plate (the above (2)) and placed in a hot air drier at 330 ° C.
Heated and melted for minutes. A sample in which a PFA sheet having a thickness of about 450 μm was adhered to an aluminum plate was obtained. FIG.
FIG. 1 shows a schematic plan view of an adhesive sample composed of a PFA sheet 1 and an aluminum plate 2.

(4) Measurement of Adhesive Strength As shown in FIG. 1, the P of the adhesive sample obtained in (3) above was measured.
Cut the FA sheet 1 at intervals of width a (10 mm) with a cutter, turn one end of each strip-shaped sheet 1,
A measuring instrument for measuring adhesive strength was obtained. FIG. 3 shows a schematic perspective view of the measurement tool for measuring adhesion obtained in FIG. 2. As shown in FIG.
The sheet 1 was pulled at an angle of 90 ° with respect to the aluminum plate 2, and the peel strength was measured. When measured with a Tensilon universal tester (manufactured by Orientec Co., Ltd.) at room temperature at a crosshead speed of 50 mm / min, it showed an adhesive strength of 5.5 kgf / cm as an average peeling load by an area method.

Comparative Example 4 (Evaluation of Adhesiveness of PFA Powder Coating Containing No Functional Group) PFA powder containing no functional group obtained in Production Example 8 in place of the PFA powder coating having a hydroxyl group obtained in Production Example 7 Except for using the coating material, a press sheet for an adhesion test was prepared, a pretreatment of the substrate was performed, and an adhesion sample was prepared in the same manner as in Example 7, and the adhesion strength was measured.

The adhesive strength of the PFA powder coating containing no functional group was 0.8 kgf / cm.

Example 8 (Electrostatic coating of PFA powder paint having hydroxyl group)
The PFA powder coating having a hydroxyl group obtained in Production Example 7 was applied to an aluminum plate pretreated in the same manner as in Example 7 at room temperature using an electrostatic powder coating machine (GX3300, manufactured by Iwata Coating Co., Ltd.). Electrostatic coating was performed at a voltage of 40 kV. The coated plate was fired at 330 ° C. for 15 minutes using a hot air drier to obtain a coated film.

The coating film was a transparent and uniform continuous film, and adhered firmly to the base aluminum plate.

Comparative Example 5 (Heat Resistance of Fluoropolymer Using Fluorine-Free Functional Group-Containing Monomer) The thermal decomposition temperature of the fluoropolymer obtained in Production Example 9 was measured by TGA analysis. However, the temperature was 220 ° C. at a 1% thermal decomposition temperature. From this, it was found that the fluorine-containing polymer using the functional group-containing monomer having no fluorine as obtained in Production Example 9 had low heat resistance.

Further, the fluorine-containing copolymer obtained in Production Example 9 was dissolved in butyl acetate to a concentration of 10% by weight.

Example 5 Next, the procedure of Example 5 was repeated, except that the aqueous dispersion of PFA having a hydroxyl group used for the primer layer was replaced with the butyl acetate solution of the fluorinated copolymer of Production Example 9 above. Similarly to the above, pretreatment of the substrate, application of the primer layer using the fluorine-containing copolymer of Production Example 9, and application of the top layer (electrostatic coating of PFA powder paint) were performed on the pure aluminum substrate.

After coating, the coating film obtained by baking at 380 ° C. for 20 minutes was colored yellow-brown, foaming and peeling were observed, and a uniform transparent coating was not obtained.

Examples 9 to 12 (Adhesion test between hydroxyl group-containing PFA film and metal) As a metal plate, a 0.5 mm thick degreased chromic acid, treated aluminum, pure aluminum, and steel plate were used. An adhesion test with a PFA film having the following (a film of Production Example 10 or 11) was performed as follows. The results are shown in Table 2.

(Preparation of Test Piece for Peeling Test) FIG. 3 is a schematic perspective view of a laminate prepared for preparing a test piece for peeling test. As shown in FIG. 3, a spacer (aluminum foil) 4 having a thickness of 0.1 mm was used as an adhesive layer 3 using the hydroxyl group-containing PFA film obtained in Production Examples 10 to 11 as an adhesive layer 3.
After being sandwiched between two metal plates 5 and set in a press machine set at 350 ° C., and preheated (for 20 minutes), 50 kg /
cm ² for 1 minute, length b (150mm), width c
(70 mm) laminate was obtained.

The thickness of the adhesive layer 3 of each of the obtained laminates was 0.1 mm. Furthermore, the laminate is 25m wide.
m, and the spacer portion was bent into a T shape at a distance e (100 mm) from one end to obtain a test piece for a peeling test. FIG. 5 shows a schematic perspective view of a test piece for a peel test obtained in FIG. 4. In FIG. 4, 3 is an adhesive layer and 5 is a metal plate.

(Peeling Test) JIS K 6854-197
Orientec Co., Ltd. based on T-type peel test method 7
Measurement was performed at room temperature at a cross head speed of 50 mm / min using a Tensilon universal testing machine. Measurements were made of the maximum peel strength (kgf / 25 mm) and the minimum peel strength (kgf / 2
5 mm).

Comparative Examples 6 to 8 (Adhesion test between PFA film containing no functional group and metal)
A test piece was prepared and a peeling test was performed in the same manner as in Example 9 except that the PFA film containing no functional group obtained in Production Example 12 was used instead of the FA film. The results are shown in Table 2.

[0337]

[Table 2]

Examples 13 to 14 (Adhesion test between hydroxyl group-containing PFA film and glass) Using a Pyrex glass of 30 × 20 × 5 mm as a glass plate, an adhesion test with hydroxyl group-containing PFA was carried out as follows. Was performed as follows.

Further, the laminated body after bonding was also subjected to a warm water resistance test and a methanol immersion test. The results are shown in Table 3.

(Preparation of Test Piece for Tensile Shear Test) FIG. 5 is a schematic perspective view of a test piece for tensile shear test. As shown in FIG. 5, the hydroxyl group-containing P obtained in Production Examples 10 to 11 was obtained.
A Pyrex glass plate 6 (length i is 30 m, width g is 20 mm, thickness j is 5) is an FA film (length f is 10 m, width g is 20 mm, thickness h is 0.1 mm) as an adhesive layer 3.
mm), a load of 3 kg was placed, and the sample was left in an electric furnace at 350 ° C. for 30 minutes to obtain a test piece. The thickness of the adhesive layer 3 was adjusted to 0.1 mm by a spacer.

(Adhesive Strength) FIG. 6 is a schematic explanatory view for explaining a test apparatus used for measuring the adhesive strength by the tensile shearing method. As shown in FIG. 6, a test jig 8 conforming to the shape of the test piece 7 obtained as described above was set on a Tensilon universal testing machine 9 manufactured by Orientec Co., Ltd., and the crosshead speed was 20 mm / min. Was used to conduct a tensile shear test. The measurement is the maximum adhesive strength (kgf / c
m ² ).

(Warm Water Resistance Test) Using the test piece prepared by the method described above, the test piece was immersed in warm water at 50 ° C., the adhesive property was observed after 6 hours, and the adhesive strength after 72 hours (kgf / kgf) was measured. c
m ² ) was measured.

(Methanol Immersion Test) The test pieces prepared by the above-described method were immersed in methanol at room temperature to observe the adhesion.

Comparative Example 9 (Adhesion between PFA film having no functional group and glass)
Preparation of test pieces and various tests were performed in the same manner as in Example 13 except that the PFA film containing no functional group obtained in Production Example 12 was used instead of the FA film. Table 3 shows the results.

[0345]

[Table 3]

Example 15 (Adhesion between hydroxyl group-containing PFA film and stainless steel, post-workability test) As a metal plate, a length of 150 m
m, width 70mm, thickness 0.5mm, degreased SUS30
A laminate test plate was prepared using the four steel plates as follows. PFA containing hydroxyl group obtained in Production Example 13
The film and the PFA film containing no functional group obtained in Production Example 14 were cut into the same size as the SUS plate.

Further, a polyimide film (Kapton 200-H manufactured by DuPont) was cut into the same size as a release film.

FIG. 7 is a schematic sectional view of the laminate test plate obtained in FIG. As shown in FIG. 7, the hydroxyl group-containing PFA film 12, the PFA film 13 containing no functional group, and the polyimide film 14 were sandwiched between two SUS plates 11 and set on a press set at 350 ° C. , after preheat (20 minutes), 1 50 kg / cm ²
After pressing for 1 minute, a laminate test plate was obtained.

After the cooling, the SUS plate 11 in contact with the polyimide film 14 was removed, and the polyimide film was spontaneously peeled off at the interface of the PFA film 14 containing no functional group.

As a result, the SUS plate 11 having good transparency and having the hydroxyl group-containing PFA film 12 as an adhesive layer was used.
And a PFA film 13 were obtained. FIG.
2 shows a schematic cross-sectional view of the obtained three-layer laminate.

Further, 100 pieces of 1 mm square bases were formed on the obtained three-layer laminate until it reached the base SUS plate 1 with a cutter knife, and the center of the bases was extruded 5 mm with an Erichsen tester. As a result, the hydroxyl group-containing PFA film 12 did not peel off at all, and the base material SUS
It adhered firmly to the plate 11.

The PFA film 12 showed strong adhesiveness to the SUS plate 11.

Comparative Example 10 (Adhesion between PFA film having no functional group and stainless steel and post-workability test) Except that a PFA film having a hydroxyl group was not used, the same procedure as in Example 15 was carried out.
A laminate of the US plate 11 and the PFA film 13 containing no functional group was obtained. FIG. 10 shows a schematic sectional view of the obtained laminate.

The obtained laminate is adhered in appearance, but the PFA film 13 containing no functional group is placed on the SUS plate 1
1 could be easily peeled off.

Further, an Erichsen test was performed in the same manner as in Example 15. In 60 out of 100 base stitches, peeling was performed centering on the cut.

Example 16 (Adhesion test between hydroxyl group-containing PFA film and polyimide film) Hydroxyl group-containing PFA film 12 obtained in Production Example 13, PFA film 13 containing no functional group obtained in Production Example 14 and polyimide film 1
4 was cut to the same size as in Example 15, and two sheets of SUS
It was sandwiched between plates 11 and heated by a press in the same manner as in Example 15 to obtain a laminate test plate. FIG. 11 shows a schematic cross-sectional view of the obtained laminate test plate. Then, after cooling, the SUS plate 11 was peeled off to obtain a laminate. FIG. 12 shows a schematic cross-sectional view of the obtained laminate. Furthermore, the laminate is 25m wide.
m.

Next, FIG. 12 shows a schematic sectional view of the laminate to be subjected to the T-peel test. In FIG. 12, the polyimide film 14 and the hydroxyl group-containing PFA film 1
The interface of No. 2 was partially peeled off, and a T-peel test was conducted in the direction of the arrow shown in FIG. 12 in the same manner as in Example 1. As a result, an adhesive force of 4.0 kgf / 25 mm was shown by an average peel load by the area method. .

Comparative Example 11 (Adhesion Test Between PFA Film Containing No Functional Group and Polyimide Film) FIG. 13 is a schematic sectional view of a laminate subjected to a T-peel test in the same manner as in Example 1. In FIG. 13, the polyimide film 14 of the laminate having a width of 25 mm obtained in Example 16 and the PFA film 1 containing no functional group
The interface of No. 3 was partly removed, and a T-peel test was performed in the direction of the arrow shown in FIG. 13 in the same manner as in Example 16, but showed no adhesive strength.

Comparative Example 12 (Heat Resistance of Fluoropolymer Using Fluorine-Free Functional Group-Containing Monomer) The thermal decomposition temperature of the fluoropolymer obtained in Production Example 9 was measured by TGA analysis. However, the temperature was 220 ° C. at a 1% thermal decomposition temperature. From this, it was found that the fluorine-containing polymer using the functional group-containing monomer having no fluorine as obtained in Production Example 9 had low heat resistance.

Further, the fluoropolymer obtained in Production Example 9 was dissolved in butyl acetate to a concentration of 10% by weight.

A butyl acetate solution of the fluorinated polymer of Production Example 9 was applied to an aluminum plate which had been subjected to the same pretreatment as in Example 9 by air spray so as to have a film thickness of about 10 μm, and red at 90 ° C. for 10 minutes. Dried out.

A PFA film 13 containing no functional group obtained in Production Example 14 and a polyimide film for releasing, on a coating 16 of a fluorine-containing polymer using a fluorine-containing functional group-containing monomer obtained by coating 14 (the same as in Example 15) and an aluminum plate 15 were sequentially stacked, and heated and pressed at 350 ° C. by a press in the same manner as in Example 15 to obtain a laminate test plate.
FIG. 14 shows a schematic cross-sectional view of the obtained laminate test plate.

After cooling the laminate test plate, the aluminum plate 15 in contact with the polyimide film 14 and the polyimide film 14 were removed to obtain a laminate.

The obtained laminate was colored yellow-brown and PF
Foaming and peeling occurred between the A film 13 and the aluminum plate 15, and a uniform and transparent laminate was not obtained.

Examples 17 to 18 A coated plate on which the PFA powder coating having hydroxyl groups obtained in Example 8 was electrostatically coated (Example 17), an extruded film of PFA having hydroxyl groups obtained in Production Example 13 (Example) Using No. 18) as a test plate, a non-adhesion test was performed by the following method. Table 4 shows the results.

(Non-adhesion test) Measurement was performed at 23 ° C. ± 2 ° C. FIG. 15 shows a schematic perspective view of a test piece used for the non-adhesion test. The test plate 17 was 150 mm or more in length, and the stain on the surface was wiped with acetone. First, the adhesive tape 18 (JIS Z 1522) having a width of 18 mm
Cut out only 150 mm length k part of test plate 17
JIS S605 from above tape 18
Rub it with a zero eraser and press it down to obtain the bonded part 19. A paper (not shown) was pasted on the remaining 150 mm portion to make it easy to handle. After pressing, the tape 18 was allowed to stand for about 20 minutes, and the tape 18 was adapted to the test plate 17. Tape 1
8 was peeled off from the end of the test plate 17 to the place where the width m was 25 mm, and the test plate 17 was attached to the lower grip of the tensile tester. The end of the peeled tape 18 was folded back by 180 ° and attached to the upper grip so that the tape 18 could be peeled straight. The force at which the tape 18 was peeled from the test plate 17 was measured by a tester at a tensile speed of 20 mm / min. As the value, the average of the portion where the tape 18 was peeled off smoothly was taken as the measured value. Table 4 shows the results.

Comparative Examples 13 to 14 (Non-adhesiveness test of PFA film having no functional group) Extruded film of PFA containing no functional group obtained in Production Example 14 (Comparative Example 13) and glass not coated at all A non-adhesion test was performed in the same manner as in Example 17 using the board (Comparative Example 14). Table 4 shows the results.

[0368]

[Table 4]

From Table 4, it was found that PFA containing an OH group had excellent non-adhesion almost similar to PFA containing no functional group.

Examples 19 to 20 A coated plate obtained by electrostatically applying the PFA powder coating having a hydroxyl group obtained in Example 8 (Example 19), an extruded film of PFA having a hydroxyl group obtained in Production Example 13 (Example 20) ) Were used to carry out a carbon contamination test and a weather resistance test (Example 20 only).

Carbon contamination test (Preparation of carbon solution) Carbon powder (Mitsubishi Chemical Corporation)
MA100) was added to 90 g of ion-exchanged water,
The mixture was dispersed and mixed using glass beads to obtain a carbon dispersion.

(Coating of Carbon)
Approximately 50 g / m on the coated plate or film by spraying
^TwoPaint and heat at 80 ° C for 2 hours to obtain a black test plate
Was.

(Evaluation) The obtained black test plate was traced and washed with a brush while being exposed to running water. Then, the degree of contamination was visually observed and evaluated according to the following criteria. Table 14 shows the results. ：: Contamination was removed by washing, and almost returned to the coated plate or film before the contamination test. Δ: Part of the contamination could be removed by washing, but gray stains were soaked on the entire surface of the coated plate or film, and the stains could not be removed. ×: Black stains remained on the entire surface of the coated plate or film and could not be removed by washing with water.

Weather resistance test The coated plate or film was put into an I-Super UV tester (Iwasaki Electric Co., Ltd.), an accelerated weather resistance test was performed, and the adhesion angle of the coated plate to water after the 500 hour test was measured. . Table 5 shows the results.

Comparative Example 15 The same aluminum plate as in Example 7 was subjected to sandblasting with 80 to 120 mesh, and then a primer (Polyflon TFE Enamel EK-195, manufactured by Daikin Industries, Ltd.)
9 DGN) by spray painting and 9 in an infrared drying oven.
After drying at 0 ° C., a primer layer was provided.

A PFA powder coating (manufactured by Daikin Industries, Ltd., NEOFLON powder coating ACX-3) was formed on the primer layer.
After 1) was electrostatically coated, it was baked at 350 ° C. for 30 minutes to obtain a PFA powder coated plate on which a coating was formed. A gray-brown coating of the primer was obtained.

Further, a carbon contamination test was carried out in the same manner as in Example 19, using the PFA powder coated plate. Table 5 shows the results.

Comparative Example 16 Zeffle GK which is a varnish for a cold-setting fluororesin paint
510 (OH value 60, manufactured by Daikin Industries, Ltd.) 100
g, isocyanate curing agent Coronate HX, 10.5 g (manufactured by Nippon Polyurethane Co., Ltd.) and butyl acetate 120
g were mixed to prepare a clear coating paint adjusted to an OH / NCO ratio of 1: 1.

An aluminum plate subjected to sandblasting in the same manner as in Comparative Example 7 was spray-coated with the above-mentioned coating material for clear coating, and then baked at 120 ° C. for 30 minutes to obtain a coated plate. The same test as in Example 20 was performed using the coated plate. Table 5 shows the results.

Comparative Example 17 Acrydic A801, a varnish for a room-temperature-curable acrylic resin paint (OH number 100, manufactured by Dainippon Ink Co., Ltd.)
100 g, 17 g of isocyanate curing agent Coronate HX (same as Comparative Example 4) and 120 g of butyl acetate were mixed.
A paint was prepared in which the H / NCO ratio was adjusted to 1: 1. In the same manner as in Comparative Example 18, an aluminum plate was spray-coated and fired using this paint to obtain a coated plate having a coating formed thereon.

The same test as in Example 20 was performed using the coated plate. Table 5 shows the results.

[0382]

[Table 5]

[0383]

According to the present invention, a non-adhesive composite material obtained by applying a material comprising a fluoropolymer having excellent adhesion to a substrate to a substrate without requiring a complicated process. Can be obtained. Further, according to the present invention, further excellent in heat resistance, stain resistance, weather resistance, water and oil repellency, stain removal properties, chemical resistance, rust resistance, antibacterial properties, energy ray resistance and low friction properties. A composite material can be obtained, which is useful as a cooking appliance, utensil, OA-related appliance, or building material.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of an adhesive sample prepared for measuring adhesive strength in Example 7 of the present invention.

FIG. 2 is a schematic perspective view of a measuring instrument used for measuring adhesive strength in Example 7 of the present invention.

FIG. 3 is a schematic perspective view of a laminate prepared for obtaining a test piece to be subjected to an adhesion test (T-peel test) in the present invention.

FIG. 4 is a schematic perspective view of a test piece to be subjected to an adhesion test (T-peel test) in the present invention.

FIG. 5 is a schematic perspective view of a test piece to be subjected to an adhesion test (tensile shear test) in the present invention.

FIG. 6 is a schematic explanatory view of a test device used for an adhesion test (tensile shear test) in the present invention.

FIG. 7 is a schematic sectional view of a laminate test plate manufactured in Example 15 of the present invention.

FIG. 8 is a schematic cross-sectional view of a three-layer laminate obtained in Example 15 of the present invention.

FIG. 9 is a schematic sectional view of a laminate obtained in Comparative Example 10 of the present invention.

FIG. 10 is a schematic cross-sectional view of a laminate test plate manufactured to obtain a laminate in Example 16 of the present invention.

FIG. 11 is a schematic sectional view of a laminate obtained in Example 16 of the present invention.

FIG. 12 is a schematic cross-sectional view of a laminate subjected to a T-peel test performed in Example 16 of the present invention.

FIG. 13 is a schematic cross-sectional view of a laminate subjected to a T-peel test performed in Comparative Example 10 of the present invention.

FIG. 14 is a schematic sectional view of a laminate test plate manufactured in Comparative Example 12 of the present invention.

FIG. 15 is a schematic perspective view of a test piece subjected to a non-adhesion test in an example of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 PFA sheet 2, 15 Aluminum plate 3 Adhesive 4 Spacer 5 Metal plate 6 Pyrex glass plate 7 Test piece 8 Test jig 9 Testing machine 11 SUS plate 12 Hydroxy group-containing PFA film 13 PFA film without functional group 14 Polyimide Film 16 Fluoropolymer coating using functional group-containing monomer containing no fluorine 17 Test plate 18 Adhesive tape 19 Adhesive part

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masahiro Kumegawa 1-1, Nishiichitsuya, Settsu-shi, Osaka Daikin Industries, Ltd. Yodogawa Works (72) Inventor Noritoshi Oka 1-1-1, Nishiichitsuya, Settsu-shi, Osaka Daikin Inside Yodogawa Seisakusho Co., Ltd. (72) Inventor Hisato Masamitsu 1-1-1, Nishiichitsuya, Settsu-shi, Osaka Daikin Industrial Co., Ltd. (72) Tetsuo Shimizu 1-1-1, Nishiichitsuya Settsu-shi, Osaka, Daikin Inside Yodogawa Manufacturing Co., Ltd.

Claims (11)

[Claims] 1. A method for producing a functional group-containing fluorine-containing ethylenic monomer having at least one functional group selected from the group consisting of a hydroxyl group, a carboxyl group, a carboxylate, a carboxyester group and an epoxy group. 0.05 to 30 mol% of at least one monomer and 70 to 99.95 mol% of at least one monomer of the fluorine-containing ethylenic monomer having no functional group (b) A non-adhesive composite material obtained by applying a material comprising a functional group-containing fluorine-containing ethylenic polymer obtained by copolymerization to a substrate. 2. The functional group-containing fluorine-containing ethylenic monomer (a) is represented by the formula (1): CX ₂ ＣCX ¹ -R _f -Y (1) (where Y is -CH ₂ OH,- COOH, carboxylate, carboxyester group or epoxy group, X and X ¹ are the same or different, and are a hydrogen atom or a fluorine atom,
R _f is a divalent fluorinated alkylene group having 1 to 40 carbon atoms,
A fluorine-containing oxyalkylene group having 1 to 40 carbon atoms, a fluorine-containing alkylene group containing an ether group having 1 to 40 carbon atoms or a fluorine-containing oxyalkylene group containing an ether bond having 1 to 40 carbon atoms) 2. The non-adhesive composite material according to claim 1, wherein a functional group-containing fluorine-containing ethylenic polymer, which is a kind of functional group-containing fluorine-containing ethylenic monomer, is applied to a substrate. 3. The fluorine-containing ethylenic monomer having no functional group (b) is obtained by applying a functional group-containing fluorine-containing ethylenic polymer which is tetrafluoroethylene to a substrate. 2. The non-adhesive composite according to 2. 4. The method according to claim 1, wherein the fluorine-containing ethylenic monomer (b) having no functional group is tetrafluoroethylene 85-9.
9.7 mol% and the formula (2): CF ₂ ＣＦCF—R _f ¹ (2) (where R _f ¹ is CF ₃ or OR _f ² (R _f ² is carbon number 1 to
5 perfluoroalkyl group)
The non-adhesive composite material according to claim 1 or 2, wherein a functional group-containing fluorinated ethylenic polymer which is a mixed monomer of up to 15 mol% is applied to the substrate. 5. The fluorinated ethylenic monomer having no functional group (b) is a tetrafluoroethylene 40-80.
The non-adhesive composite material according to claim 1 or 2, which is a mixed monomer of 0 mol% to 15 mol% of ethylene and 20 to 60 mol% of ethylene and another copolymerizable monomer. 6. A non-adhesive composite material obtained by applying the functional group-containing fluorine-containing ethylenic polymer according to any one of claims 1 to 5 to a substrate in the form of a paint. 7. A non-adhesive composite material comprising the functional group-containing fluorine-containing ethylenic polymer according to claim 1 applied to a substrate in the form of an aqueous dispersion. 8. A non-adhesive composite material comprising the functional group-containing fluorine-containing ethylenic polymer according to claim 1 applied to a substrate in the form of a powder coating. 9. A non-adhesive composite material comprising the functional group-containing fluorine-containing ethylenic polymer according to claim 1 applied to a substrate in the form of a film. 10. The substrate according to claim 1, wherein the substrate is a metal-based substrate.
6. The non-adhesive composite material according to any one of items 1 to 5. 11. The substrate according to claim 1, wherein the substrate is a glass substrate.
6. The non-adhesive composite material according to any one of items 1 to 5.