KR101884308B1 - Ceramic paint composition having high performance for PCM and preparation method thereof - Google Patents

Abstract

The present invention relates to a high performance ceramic coating composition for pre-coated metal (PCM) and a manufacturing method thereof and, more specifically, to a high performance ceramic coating composition for PCM, in which a three-dimensional (3D) network-structured polysiloxane frame structure of a conventional ceramic resin is modified into a linear siloxane frame structure, a lipophilic functional groove is introduced, and silicone modified prepolymer (SMP, which is a modified structure between an inorganic ceramic binder and an organic resin) is applied to provide high processability and viscosity; and a manufacturing method thereof. According to the present invention, the high performance ceramic coating composition for PCM is manufactured by including a lipophilic linear ceramic binder, a linear lipophilic high viscosity SMP resin, a hardener, an antifouling additive, and a flame-retardant additive, thereby increasing roll coating workability, processability, flame-retardant properties, antifouling properties, a film hardness, and weatherability.

Description

Technical Field [0001] The present invention relates to a ceramic coating composition for a high-performance plastic film,

More particularly, the present invention relates to a ceramic coating composition for a plastic film, and more particularly, to a method of manufacturing a ceramic coating composition for a plastic film by changing a network network structure of a conventional ceramic resin into a linear structure and imparting a lipophilic functional group to a high viscosity SMP resin of a lipophilic organic- To a ceramic coating composition for PCM (Pre-coated Metal) having high productivity and a method for producing the same.

Currently, various technologies are used in various companies or academia to improve the performance of various inorganic ceramics resins different from organic resins (Korean Patent No. 10-1405322, Korean Patent Laid- Korean Patent Laid-Open Nos. 10-2017-0122685 and 10-2017-0113045).

This is because it has covalent bonds with silicon and other organic atoms in the ceramic resin, and has various advantages such as unique stability and firmness of Si-O-Si bond.

This is because the bonding angle of Si-O-Si is 143 and the angle of O-Si-O is 110 °, which is wider than 109.5 ° of the tetrahedral structure generally possessed by the organic resin and the bonding length is Si-O of polydimethylsiloxane Of 1.64 A, which is longer than the typical organic chemical bonding length, CC, 1.54 A, and the bond energies of Si-O 452 kJ / mol and CC 346 KJ / mol, It has good characteristics.

In particular, the ceramic resin of the Si-O polysiloxane skeleton is superior to the organic resin which does not absorb UV and is slightly damaged by UV.

The very design of the critical block intermediates in the polysiloxane is critical to the manifestation of these properties.

Mainly, adhesion force, viscoelasticity, abrasion resistance, scratch resistance and corrosion resistance can be controlled.

In addition, it is considered that the design of the structural change of the block intermediate is important because of the crack prevention according to the three dimensional network structure and the peeling off of the substrate due to too hard during the summer after painting.

The most difficult part to apply linear structure of inorganic ceramic binder and introduce lipophilic functional group with high viscosity is to ensure phase stability.

Inorganic nanoparticles and organic components have a problem of physical phase separation, which makes optical opacity and physical compatibility difficult.

Accordingly, in order to overcome the above problem, the present invention promotes the in-situ synthesis of inorganic nanoparticles and organic components.

The properties that are overcome in this synthesis are: first, the hydrolytic and polymerisation mobility in the sol-gel process; and second, the thermodynamic part, which is incompatible with the polymerization, organic and oleophilic components of organic components. The synthesis of the linear structure of the ceramic resin makes it possible to process after PCM work after pre-painting and to prevent cracking.

In the present invention, in order to secure the working viscosity of the ceramic coating material PCM, roll coating which is used in the PCM coating is made possible by the compatibility with the high viscosity SMP binder by introducing the oleophilic linear inorganic ceramic binder and the spray coating method only.

In addition, the present invention improves the stain resistance of conventional ceramic coatings, thereby ensuring prevention of contamination and maintenance of the panel after the panel construction, and solving the problem of burning fire of existing organic coatings by imparting flame retardancy to the inorganic ceramic coatings.

The object of the present invention is to change the network network structure of existing ceramic resin into a linear structure and enable the high-viscosity SMP resin of the lipophilic organic / inorganic hybrid to be branded with the lipophilic functional group, The present invention also provides a new high functional ceramic coating composition for a high performance microfiche which can be applied in a stain resistant manner and is improved in flame retardancy by improving the stain resistance and flame retardancy.

It is still another object of the present invention to provide a PCM (Pre-coated Metal) steel sheet manufactured using the ceramic coating composition for high functionality according to the present invention, and a method for manufacturing the same.

In order to achieve the above object,

A lipophilic linear inorganic ceramic binder represented by the following formula (1)

[Chemical Formula 1]

(Where n is a natural number); And

A linear lipophilic high viscosity silicone modified prepolymer (SMP) represented by the following formula (2):

(2)

(Wherein n is a natural number). The present invention provides a ceramic coating composition for a pre-coated metal (PCM).

In addition,

Oleophilic linear inorganic ceramic binder 60 to 70 wt%;

20 to 30 wt% linear lipophilic high viscosity SMP binder;

Curing agent; And

An additive,

here,

The oleophilic linear inorganic ceramic binder

i) mixing 30 to 38 wt% of ethylene glycol, 51 to 58 wt% of terapthalic acid and 0.01 to 0.005 wt% of antimony (III) oxide, and heating to dissolve in a nitrogen atmosphere to generate a condensed ester ; And

ii) adding 3 to 6 wt% of nano-colloidal silica as a hydrolyzed inorganic ceramic binder, and heating and chemically reacting the semi-finished product 1,

iii) opening reaction by mixing 20 to 30 wt% of toluene, 60 to 70 wt% of octamethylcyclotetrasilane and 2 to 3 wt% of dimethylsulfoxide (DMSO) as a catalyst;

iv) adding 0.05 to 0.1 wt% of hexamethyldisiloxane, dissolving and reacting and terminating; And

v) 50 to 60 wt% of the reaction product of b), 10 to 15% of propylene glycol methyl ether acetate (PGMEA), 12 to 20% of butyl alcohol and 12 to 20% of diacetone alcohol and distillation under reduced pressure , And a semi-finished product (2)

The linear lipophilic high viscosity SMP binder

vi) mixing 30 to 40 wt% of silanol (dimethylsiloxane hard oxy fluthenate), 5 to 20 wt% of adipic acid, and 5 to 8 wt% of ethylene glycol, followed by heating and reacting;

vii) adding 5 to 8 wt% of isophthalic acid, 3 to 5 wt% of 2-methyl-1,3-propanediol and 5 to 8 wt% of trimethylol propane, and heating and reacting; And

viii) adding 5 to 8 wt% of cyclohexanone and 5 to 8 wt% of cocosol to adjust the viscosity,

A ceramic coating composition for pre-coated metal (PCM) is provided.

In addition,

1) preparing a hydrolyzed lipophilic inorganic ceramic binder represented by the following formula (3) as a semi-finished product 1:

(3)

;

;

2) preparing a lipophilic linear inorganic ceramic binder represented by the following formula 1 as a semi-finished product 2:

[Chemical Formula 1]

(Where n is a natural number);

3) preparing a first solution by mixing semi-finished product 1, semi-finished product 2, propylene glycol methyl ether acetate (PGMEA) and alcohol; And

4) preparing a linear lipophilic high viscosity silicone modified prepolymer (SMP) binder represented by the following formula (2) as a second solution:

(2)

(Where n is a natural number); And

5) mixing the first solution, the second solution, the curing agent and the additive.

A method for producing a ceramic coating composition for Pre-coated Metal (PCM) is provided.

In addition,

1) a step of producing a hydrophilic and lipophilic reactive inorganic ceramic binder comprising the following i) to ii) (semi-finished product 1 manufacturing step);

i) mixing 30 to 38 wt% of ethylene glycol, 51 to 58 wt% of terapthalic acid and 0.01 to 0.005 wt% of antimony (III) oxide, and heating to dissolve in a nitrogen atmosphere to generate a condensed ester ; And

ii) adding 3 to 6 wt% of the nano-colloidal silica as the hydrolyzed inorganic ceramic binder, and heating and chemically reacting;

2) preparing an oleophilic linear inorganic ceramic binder comprising iii) to v) (semi-finished product 2 manufacturing step);

iii) opening reaction by mixing 20 to 30 wt% of toluene, 60 to 70 wt% of octamethylcyclotetrasilane and 2 to 3 wt% of dimethylsulfoxide (DMSO) as a catalyst;

iv) adding 0.05 to 0.1 wt% of hexamethyldisiloxane, dissolving and reacting and terminating; And

v) mixing 50 to 60 wt% of the reactant of iv), 10 to 15% of propylene glycol methyl ether acetate (PGMEA), 12 to 20% of butyl alcohol and 12 to 20% of diacetone alcohol and distillation under reduced pressure;

3) 10 to 15 wt% of the hydrophilic and lipophilic reactive inorganic ceramic binder (semi-finished product 1), 15 to 20 wt% of the lipophilic linear inorganic ceramic binder (semi-finished product 2), 10 to 20 wt% of PGMEA (propylene glycol methyl ether acetate) 20 to 30 wt% of butyl alcohol, and 20 to 30 wt% of diacetone alcohol to prepare a first solution (first solution preparation step);

4) preparing a linear lipophilic high viscosity silicone modified prepolymer (SMP) binder comprising the following steps vi) to viii) (second solution preparation step);

vi) mixing 30 to 40 wt% of silanol (dimethylsiloxane hard oxy fluthenate), 5 to 20 wt% of adipic acid, and 5 to 8 wt% of ethylene glycol, followed by heating and reacting;

vii) adding 5 to 8 wt% of isophthalic acid, 3 to 5 wt% of 2-methyl-1,3-propanediol and 5 to 8 wt% of trimethylol propane, and heating and reacting; And

viii) adding 5 to 8 wt% of cyclohexanone and 5 to 8 wt% of cocazole to adjust the viscosity; And

5) mixing 60 to 70 wt% of the first solution, 20 to 30 wt% of the second solution, a curing agent and an additive;

The present invention also provides a method for producing a ceramic coating composition for pre-coated metal (PCM).

Also, the present invention provides a method of manufacturing a PCM (Pre-coated Metal) steel sheet comprising the step of roll coating using the ceramic coating composition for PCM according to the present invention.

In addition, the present invention provides a PCM (Pre-coated Metal) steel sheet coated with the ceramic coating composition for PCM according to the present invention.

In the present invention, the network network structure of conventional ceramic resin is changed into a linear structure, and a highly viscous SMP resin of a lipophilic organic-inorganic hybrid can be branded by imparting a lipophilic functional group, thereby achieving high productivity by a roll coating method of PCM In addition, the present invention overcomes the disadvantages of conventional organic paints by imparting stain resistance and enhancing flame retardancy.

In the present invention, the application of the ceramic composition of the new composition overcomes the above-mentioned disadvantages of the conventional art, and the present invention has the advantages of the conventional ceramic resin, such as high hardness, high weatherability, By combining the characteristics of high porosity and high viscosity while having flame retardancy, it is combined with roll coating method of PCM (Pre-Coated Metal) which is the most productive now.

The inorganic ceramic coating composition according to the present invention can overcome the limitations of conventional organic coatings while allowing a roll coating method which was possible only in an organic resin type coating material, thereby securing high productivity and pioneering a new high functional coating material market can do.

The differentiating characteristics of the lipophilic linear ceramic binder according to the present invention are as follows: high weatherability, hardness, stain resistance, workability, and work viscosity for roll coating, and the chemical resistance, bending resistance and crack resistance of inorganic ceramic binders it is possible to ensure crack safety and, in particular, to ensure high hardness, stain resistance and flame retardancy, which are comparable in weatherability to fluorine paints having the best weatherability among the organic binders and which are major disadvantages of fluorine paints.

FIG. 1 is a diagram showing a manufacturing process diagram of a ceramic paint for Pre-Coated Metal (PCM) manufactured according to the present invention.
FIG. 2 is a diagram showing a reaction formula of a hydrophilic hydrolyzed inorganic ceramic colloidal sol.
3 is a view showing the structure of the hydrolyzed lipophilic inorganic ceramic binder.
4 is a diagram showing a reaction formula of a lipophilic linear inorganic ceramic binder.
5 is a diagram showing a lipophilic linear high viscosity SMP binder structure.
6 is a photograph showing a Pre-Coated Metal (PCM) operation.
7 is a photograph showing a building made of a pre-coated metal (PCM) steel plate.
FIG. 8 is a diagram illustrating a pre-coated metal (PCM) line process:
Chemical coating: Washing -> Washing -> Phosphate treatment;
Primer coating: Undercoating (Epoxy, Polyester paint);
Oven: Metal Peak temperature (MPT: 210 占 폚);
Finish Coating: Top Coating (polyester, organic hybrid coating);
Oven: thermoset, MPT 240 ℃;
Coil rotation: re-winding the steel coil after painting;
Line speed: 40 m / min; And
Post-production after mass production (roll operation).
Figure 9 shows a spray coating line process:
Line speed: 2 to 3 m / min;
Discontinuous operation line; And
Painting before paneling (sheet work).
10 is a test report showing smoothness as a result of physical properties of a ceramic paint for use in a plastic film produced according to the present invention.
11 is a test report showing smoothness as a result of physical properties of a commercially available ceramic paint (Daemyung Co., Ltd.).
FIG. 12 is a test report showing the hardness as a physical property of a ceramic paint for use in a plastic product manufactured according to the invention.
13 is a test report showing the hardness as a result of physical properties of a commercially available ceramic paint (Daemyung Co., Ltd.).

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and should be construed in accordance with the technical meanings and concepts of the present invention.

The present invention provides a ceramic coating composition for PCM (Pre-coated Metal) prepared by branding a highly viscous SMP resin of a lipophilic organic or inorganic hybrid by changing the network network structure of an existing ceramic resin to a linear structure and imparting a lipophilic functional group .

Specifically, the present invention provides

A lipophilic linear inorganic ceramic binder represented by the following formula (1)

[Chemical Formula 1]

(Where n is a natural number); And

A linear lipophilic high viscosity silicone modified prepolymer (SMP) represented by the following formula (2):

(2)

(Wherein n is a natural number). The present invention provides a ceramic coating composition for a pre-coated metal (PCM).

The ceramic coating composition for PCM may further contain a curing agent and an additive, and preferably includes an additive for imparting stain resistance or flame retardancy.

The inorganic ceramic coating composition of the present invention is composed essentially of 60 to 70 wt% of a lipophilic linear inorganic ceramic binder, 20 to 30 wt% of a linear lipophilic high viscosity SMP binder, 3 to 8 wt% of block chidymodifunctional triazine, 0.5 to 1.0 It is preferable that 0.05 to 0.3 wt% of the hydrophilic siloxane additive and 5 to 10 wt% of the inorganic silica are contained for imparting flame retardancy to the basic coating film component of wt% to impart stain resistance.

When the amount of the inorganic ceramic is increased, the viscosity is lowered as the hardness is increased. As a result, the PCM and roll coating operations become difficult and the workability becomes weak. On the other hand, as the amount of SMP increases, the hardness decreases , Durability, heat resistance, and the like are weakened.

The blockdiode polyfunctional triazine is a triazine blocked by a methoxy group to prevent the oxidation and reduction of an amino group from occurring at room temperature, and is a crosslinking agent mainly used for thermal curing (temperature of 200 ° C or higher).

The hydrophilic siloxane additive is mainly a lipophilic monomolecular substance that is contaminated, and imparts stain resistance by using a hydrophilic siloxane additive to push it out. Usable materials are all siloxane structures having ethoxy chains available, and structures such as dimethylsiloxane ethylene oxide block copolymer are mainly used.

The inorganic silica is basically an inorganic substance and has a fire-retardant property. Since the inorganic silica is dispersed evenly in a macro-size and participated in the paint, burning can be prevented even if a fire occurs after painting.

If a large amount of the hydrophilic siloxane additive is added, the compatibility of the resin in the coating material may be deteriorated, resulting in coating failure (creasing, shattering, etc.). In case of inorganic silica, if it is added a lot, the fire-retardant property is improved, but the proportion of the binder may be reduced and the coating film may be weakened.

The inorganic ceramic coating composition of the present invention comprises

Oleophilic linear inorganic ceramic binder 60 to 70 wt%;

20 to 30 wt% linear lipophilic high viscosity SMP binder;

Curing agent; And

An additive,

here,

The oleophilic linear inorganic ceramic binder

i) mixing 30 to 38 wt% of ethylene glycol, 51 to 58 wt% of terapthalic acid and 0.01 to 0.005 wt% of antimony (III) oxide, and heating to dissolve in a nitrogen atmosphere to generate a condensed ester ; And

ii) adding 3 to 6 wt% of nano-colloidal silica as a hydrolyzed inorganic ceramic binder, and heating and chemically reacting the semi-finished product 1,

iii) opening reaction by mixing 20 to 30 wt% of toluene, 60 to 70 wt% of octamethylcyclotetrasilane and 2 to 3 wt% of dimethylsulfoxide (DMSO) as a catalyst;

iv) adding 0.05 to 0.1 wt% of hexamethyldisiloxane, dissolving and reacting and terminating; And

v) 50 to 60 wt% of the reaction product of b), 10 to 15% of propylene glycol methyl ether acetate (PGMEA), 12 to 20% of butyl alcohol and 12 to 20% of diacetone alcohol and distillation under reduced pressure 2, < / RTI &

The linear lipophilic high viscosity SMP binder

vi) mixing 30 to 40 wt% of silanol (dimethylsiloxane hard oxy fluthenate), 5 to 20 wt% of adipic acid, and 5 to 8 wt% of ethylene glycol, followed by heating and reacting;

vii) adding 5 to 8 wt% of isophthalic acid, 3 to 5 wt% of 2-methyl-1,3-propanediol and 5 to 8 wt% of trimethylol propane, and heating and reacting; And

viii) adding 5 to 8 wt% of cyclohexanone and 5 to 8 wt% of cocosol 100 to adjust the viscosity.

In the present invention, in-situ synthesis of an inorganic nano-particle and an organic component was promoted in order to ensure hydrophilic and lipophilic phase stability.

During the in-situ synthesis process, the solvent equilibrium was achieved by performing solvent substitution in consideration of solubility in the progress of reaction of organic and inorganic hybridization with progress of reaction.

First, the main composition of the inorganic ceramic binder is a sol-gel process through Si- (OR) 4 and the synthesis is carried out so as to obtain a stable molecular structure.

The organic side structure is a process in which ethylglycol and terapthalic acid are esterified to attach to the skeletal structure of inorganic ceramics.

This is an important factor for inducing the hydrophilic group of the inorganic ceramic to the lipophilic side and induces the compatibility and partial ester reaction of the high viscosity linear SMP binder with the hydroxoxy functional group of the second solution.

The general formula of the inorganic ceramic hydrophilic element is as follows.

_{Si (OC 2 H 5) 4} + 4H 2 O → Si (OH 4) + 4C 2 H 5 OH ( hydrolysis)

_{nSi (OH) 4 → (SiO} 2) n + 2nH 2 O ( condensation reaction)

Next, in order to secure the working viscosity of the ceramic coating material PCM, lipophilic linear inorganic ceramic binder was introduced to ensure compatibility with the high viscosity SMP binder.

Finally, we improved the pollution resistance of conventional ceramic paint, and it was easy to prevent pollution after panel construction and easy maintenance. In addition, it gave flame retardancy to inorganic ceramic paint and solved the problem of burning in case of fire of existing organic paint.

The present invention also relates to a method for manufacturing a ceramic coating composition for PCM (Pre-coated Metal) by changing the network network structure of a conventional ceramic resin to a linear structure and imparting a lipophilic functional group to brand a high viscosity SMP resin of a lipophilic organic / ≪ / RTI >

Specifically, the present invention provides

1) preparing a hydrolyzed lipophilic inorganic ceramic binder represented by the following formula (3) as a semi-finished product 1:

(3)

;

;

2) preparing a lipophilic linear inorganic ceramic binder represented by the following formula 1 as a semi-finished product 2:

[Chemical Formula 1]

(Where n is a natural number);

3) preparing a first solution by mixing semi-finished product 1, semi-finished product 2, propylene glycol methyl ether acetate (PGMEA) and alcohol; And

4) preparing a linear lipophilic high viscosity silicone modified prepolymer (SMP) binder represented by the following formula (2) as a second solution:

(2)

(Where n is a natural number); And

5) mixing the first solution, the second solution, the curing agent and the additive.

A method for producing a ceramic coating composition for Pre-coated Metal (PCM) is provided.

The inorganic ceramic coating composition of the present invention comprises

1) a step of producing a hydrophilic and lipophilic reactive inorganic ceramic binder comprising the following i) to ii) (semi-finished product 1 manufacturing step);

i) mixing 30 to 38 wt% of ethylene glycol, 51 to 58 wt% of terapthalic acid and 0.01 to 0.005 wt% of antimony (III) oxide, and heating to dissolve in a nitrogen atmosphere to generate a condensed ester ; And

ii) adding 3 to 6 wt% of the nano-colloidal silica as the hydrolyzed inorganic ceramic binder, and heating and chemically reacting;

2) preparing an oleophilic linear inorganic ceramic binder comprising iii) to v) (semi-finished product 2 manufacturing step);

iii) opening reaction by mixing 20 to 30 wt% of toluene, 60 to 70 wt% of octamethylcyclotetrasilane and 2 to 3 wt% of dimethylsulfoxide (DMSO) as a catalyst;

iv) adding 0.05 to 0.1 wt% of hexamethyldisiloxane, dissolving and reacting and terminating; And

v) mixing 50 to 60 wt% of the reactant of iv), 10 to 15% of propylene glycol methyl ether acetate (PGMEA), 12 to 20% of butyl alcohol and 12 to 20% of diacetone alcohol and distillation under reduced pressure;

3) 10 to 15 wt% of the hydrophilic and lipophilic reactive inorganic ceramic binder (semi-finished product 1), 15 to 20 wt% of the lipophilic linear inorganic ceramic binder (semi-finished product 2), 10 to 20 wt% of PGMEA (propylene glycol methyl ether acetate) 20 to 30 wt% of butyl alcohol, and 20 to 30 wt% of diacetone alcohol to prepare a first solution (first solution preparation step);

4) preparing a linear lipophilic high viscosity silicone modified prepolymer (SMP) binder comprising the following steps vi) to viii) (second solution preparation step);

vi) mixing 30 to 40 wt% of silanol (dimethylsiloxane hard oxy fluthenate), 5 to 20 wt% of adipic acid, and 5 to 8 wt% of ethylene glycol, followed by heating and reacting;

vii) adding 5 to 8 wt% of isophthalic acid, 3 to 5 wt% of 2-methyl-1,3-propanediol and 5 to 8 wt% of trimethylol propane, and heating and reacting; And

viii) adding 5 to 8 wt% of cyclohexanone and 5 to 8 wt% of cocazole to adjust the viscosity; And

5) mixing the first solution with 60 to 70 wt%, the second solution with 20 to 30 wt%, and a curing agent and an additive.

In the above production process, the linear lipophilic high viscosity SMP binder of the step 4) preferably has a solid content of about 50 to 70 wt%, a viscosity of V to X, and a hue of not more than 5.

In the above-mentioned manufacturing method, the step 5) is preferably carried out in such a manner that 60 to 70 wt% of the first solution, 20 to 30 wt% of the second solution, 3 to 8 wt% of the block dihydric polyfunctional triazine, 0.5 to 1.0 wt% of the acid catalyst, 0.05 to 0.3 wt% of the additive and 5 to 10 wt% of the inorganic silica are mixed.

Also, the present invention provides a method of manufacturing a PCM (Pre-coated Metal) steel sheet comprising the step of roll coating using the ceramic coating composition for PCM according to the present invention.

In addition, the present invention provides a PCM (Pre-coated Metal) steel sheet coated with the ceramic coating composition for PCM according to the present invention.

The coating may be roll coated on any one metal selected from the group consisting of aluminum, iron oxide, gypsum and stainless steel at an operating viscosity of 50 to 120 seconds / 25 ° C and a curing temperature of 230 to 250 ° C.

The inorganic ceramic coating composition according to the present invention has high hardness, high weatherability, and flame retardancy, which are advantages of conventional ceramic resins by applying a new composition of ceramic resin, and additionally imparts properties of high porosity and high viscosity, It is possible to achieve a high productivity by enabling the roll coating method of the PCM (Pre-Coated Metal) work which can be performed only by the user.

Hereinafter, the present invention will be described in detail with reference to Examples and Experimental Examples.

However, the following Examples and Experimental Examples are merely illustrative of the present invention, and the present invention is not limited to the following Examples and Experimental Examples.

< Example  1> Lipophilic  First solution manufacturing process for manufacturing linear inorganic ceramic binder

<1-1> Semifinished product 1

Manufacture of Hydroxyphilic Inorganic Ceramic Binder

The hydrolyzed inorganic ceramic binder used was 3 to 6 wt% of nano-colloidal silica (7 nm, pH 10, solid content 30 wt%). 30 ~ 38 wt% of ethylene glycol, 51 ~ 58 wt% of terapthalic acid and 0.01 ~ 0.005 wt% of antimony (Ⅲ) were added to the distillation reactor and dissolved in nitrogen dissolving at 250 to 260 &lt; 0 &gt; C for 10 hours. At this time, a condensation ester reaction occurred. After the reaction, the reaction mixture was cooled to 180 ° C.

Then, 3 to 6 wt% of nanocollidal silica was added and dissolving was performed. At this time, the reaction mixture was maintained at about 400 to 600 rpm, reacted at 250 to 270 ° C. for 4 hours, and then reacted at 280 ° C. for 3 hours. At this time, the water was removed under a reduced pressure of about 0.1 atm.

After completion of the reaction, the reaction product was cooled to room temperature (25 ° C), washed with water three to four times, and then dried again at 70 ° C for about 24 hours. About 1.5-3 wt% of the yield was produced on the basis of the hybrid inorganic ceramic binder. In the case of the linear polysiloxane, 70 wt% of octamethylcyclotetrasilane, 28 wt% of toluene and 1.7 wt% of DMSO were added, and the mixture was reacted at 100 ° C. for about 5 hours or more. Then, 0.1 wt% of hexamethyldisiloxane was used as a stopper And the reaction was terminated. At this time, the structural linearity was secured, the lipophilic component remained strong, and the degree of polymerization was usually maintained at 2 to 6.

<1-2> Semifinished product 2

Preparation of oleophilic linear inorganic ceramic binder

20 to 30 wt% of toluene, 60 to 70 wt% of octamethylcyclotetrasilane and 2 to 3 wt% of dimethylsulfoxide (DMSO) as a catalyst were added to the reactor, and the solution was dissolved by dissolving for about 7 hours while maintaining the temperature at 100 & The reaction was allowed to proceed.

After completion of the ring-opening reaction of octamethylcyclotetrasilane and the polymerization reaction, the reaction was terminated by cooling at 20 ° C, followed by addition of 0.05 to 0.1 wt% of hexamethyldisiloxane, and dissolving for about 1 hour.

The yield was 56-66 wt%.

The porous aluminosilicate ceramic was prepared by adding 50 to 60 wt% of a linear inorganic ceramic binder, 10 to 15 wt% of sebum emulsion, 12 to 20 wt% of butyl alcohol and 12 to 20 wt% of diacetone alcohol, Distillation was carried out.

At this time, 14 to 17 wt% of toluene was removed.

&Lt; 1-3 >

10 to 15 wt% of semi-finished product, 15 to 20 wt% of semi-finished product 2, 10 to 20 wt% of propylene glycol methyl ether acetate (PGMEA), 20 to 30 wt% of butyl alcohol, % To prepare a first solution.

< Example  2> Linear Lipophilic  High viscosity silicon Modified Prepolymer gt; prepolymer , SMP ) &Lt; / RTI &gt;

The SMP resin was prepared by adding 30 to 40 wt% of silanol (dimethylsiloxane hardoxy silane, Mw 500 to 700, viscosity 65 cSt), 5 to 20 wt% of adipic acid and 5 to 8 wt% of ethylene glycol, After reacting at 170 DEG C for 2 hours and 170 DEG C at 200 DEG C for 4 hours, 5 to 8 wt% of isophthalic acid, 3 to 5 wt% of 2-methyl-1,3-propanediol, 5 to 8 wt% And maintained at 200 ° C for 1 hour. The reaction was continued at 230 ° C for 4 hours at 200 ° C, followed by reaction at 230 ° C, followed by distillation to complete the reaction. Then, 5 to 8 wt% of cyclohexanone and 5 to 8 wt% of cocosol 100 were added to adjust the viscosity.

The solids content of SMP was about 50 ~ 70 wt%, viscosity was V ~ X, and hue was less than 5.

< Example  3> Preparation of Inorganic Ceramic Coating Composition

60 to 70 wt% of the lipophilic linear inorganic ceramic binder of Example 1, 20 to 30 wt% of the linear lipophilic high viscosity SMP binder of Example 2, 3 to 8 wt% of block dihydric polyfunctional triazine, 0.5 to 1.0 wt% of an acid catalyst, 0.05 to 0.3 wt% of a hydrophilic siloxane additive, and 5 to 10 wt% of inorganic silica.

< Experimental Example  1> Painting workability

The working viscosity was 50 to 120 sec / 25 ° C (Ford Cup No. 4), the diluting solvent was ciclohexanone, the curing temperature was 235 to 245 ° C based on MPT (metal peak temperature) Aluminum, easy-eye steel, gypsum steel, and stainless steel were used.

< Experimental Example  2> Check property

(Hardness, Smoothness, Density Functional Theory (DFT) Uniformity, and Productivity) of the conventional ceramic coating material (Daemyeongseong Co., Ltd., Korea) Respectively. At this time, I received a test report from the Korea Institute of Chemical Fusion Test.

Existing ceramic paint is a product of Clariant of Germany. It is a super nano-type material made of Silcone-Nitrogen. It is originally imported for automobile body, changed from other companies to construction use and painted by spray method (Only possible with spray painting).

Item The ceramic paint for use in the embodiment Existing Ceramic Paints Hardness 4H 2H Smoothness Good / Gloss 83% (33u)
(Surface smooth by roll coating) Unevenness / Gloss 67% (36u)
(spray coating with uneven surface
Resulting in decreased smoothness) DFT uniformity Constant by roll coating Variation in spray coating
Sagging occurs during vertical coating Productivity (production method) PCM Roll coating Spray

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. In addition, it is a matter of course that various modifications and variations are possible without departing from the scope of the technical idea of the present invention by anyone having ordinary skill in the art.

Claims (11)

A lipophilic linear inorganic ceramic binder represented by the following formula (1)
[Chemical Formula 1]

(Where n is a natural number); And
A linear lipophilic high viscosity silicone modified prepolymer (SMP) represented by the following formula (2):
(2)

(Where n is a natural number). &Lt; / RTI &gt;
The method according to claim 1,
A curing agent, and an additive. &Lt; RTI ID = 0.0 &gt; 11. &lt; / RTI &gt;
delete delete 1) preparing a hydrolyzed lipophilic inorganic ceramic binder represented by the following formula (3) as a semi-finished product 1:
(3)

;

2) preparing a lipophilic linear inorganic ceramic binder represented by the following formula 1 as a semi-finished product 2:
[Chemical Formula 1]

(Where n is a natural number);
3) preparing a first solution by mixing semi-finished product 1, semi-finished product 2, propylene glycol methyl ether acetate (PGMEA) and alcohol; And
4) preparing a linear lipophilic high viscosity silicone modified prepolymer (SMP) binder represented by the following formula (2) as a second solution:
(2)

(Where n is a natural number); And
5) mixing the first solution, the second solution, the curing agent and the additive.
Method for preparing a ceramic coating composition for pre-coated metal (PCM).
delete delete delete A method for manufacturing a pre-coated metal (PCM) steel sheet, comprising the step of roll coating using the ceramic coating composition for PCM of claim 1.
10. The method of claim 9,
Wherein the roll coating is applied to any metal selected from the group consisting of aluminum, easy-eye steel, gypsum steel and stainless steel at an operating viscosity of 50 to 120 sec / 25 ° C and a curing temperature of 230 to 250 ° C. A method of manufacturing a steel sheet.
A pre-coated metal (PCM) steel sheet coated with the ceramic coating composition for PCM of claim 1.

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