JP2614090B2 - Metal clad heat-resistant plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a metal clad heat-resistant plate excellent in fire resistance, workability, and bending strength.
The present invention relates to a processed material that can be used conveniently for the purpose of disaster prevention and heat resistance for building materials.

[Conventional technology]

Usually, a metal plate such as stainless steel or aluminum or a oil is commercially available. Depending on the purpose of use, it is often cut into appropriate dimensions and bent.

[Problems to be solved by the invention]

However, current commercial materials have the following disadvantages.

(1) When used for partitions or underlays, or for repairing building materials, etc. for disaster prevention around cooking utensils etc., cutting and bending are generally performed, but unexpectedly convenient. There are aspects that are difficult to process.

(2) Although a metal plate or oil is excellent in fire resistance, when it is used as a protective material for a heat appliance, it does not have a heat insulating effect because of its high thermal conductivity.

(3) In the case of metal oil, if grease, spills, etc. adhere during use, it is often disposable because it is difficult to remove and wash dirt.

Therefore, there is still a need for a material that has the same level of fire resistance as a metal plate or oil alone, has excellent heat insulating properties, is easy to process conveniently, and can withstand long-term use.

[Means for solving the problem]

The present inventor studied in order to solve the above-mentioned drawbacks of the conventional metal plate or oil, to provide a heat-insulating, fire-resistant, workable, and easy-to-clean kitchen plate material that is easy to clean. Was done.

As a result, a plurality of prepreg sheets mainly composed of inorganic materials such as glass paper and ceramics paper, and a binder composed of a polyorganosiloxane resin having excellent fire resistance and a carbon-functional organosilicon processed product,
A metal such as stainless steel, aluminum, copper, or the like, in which a heat-resistant adhesive containing a self-adhesive polyorganosiloxane resin as a main component is applied to at least one surface of a laminated plate laminated and adhered to the surface facing the laminated plate. By laminating the foil, a metal clad heat-resistant plate having the above-mentioned performance was completed.

[Action]

 Hereinafter, the present invention will be described in detail.

The inorganic laminate used in the present invention has a binder made of a polyorganosiloxane resin and a carbon-functional organosilicon compound having particularly excellent fire resistance and water resistance. The main elements of the laminate are glass paper, ceramic paper, and the like. Is used. Glass paper is obtained by forming glass fibers of up to several tens of microns, and ceramics paper is obtained by forming alumina silica fibers. The above-mentioned binder is applied to these substrates, and the solvent is removed to prepare a prepreg sheet (laminated material).

On the other hand, stainless steel, aluminum,
Thinly apply a resin solution containing a self-adhesive polyorganosiloxane resin as a heat-resistant adhesive and a curing agent such as an organic peroxide or aminoxysilane to one side of a metal oil such as copper, and then heat and dry it. Remove the solvent contained in the liquid.

A predetermined number of the thus prepared prepreg sheets were stacked, and both sides or one side of the prepreg sheets were overlapped with a metal foil surface coated with a heat-resistant adhesive, sandwiched by a mirror-finished steel plate or the like, and laminated by a hot press to perform an integral molding. Obtain a laminate.

The metal oil used in the metal clad heat-resistant plate of the present invention is effective in adapting to the laminated plate due to the correlation with the pressure-sensitive adhesive film layer to generate elasticity that can withstand bending, and to supplement the bending strength by a synergistic effect. Can be. The thickness of the metal foil capable of exerting such a function can be 15 to 200 μm, but is preferably 30 to 100 μm, and the thickness of the laminate is suitably 100 to 500 μm.

Polyorganosiloxane resin used for the binder of the inorganic laminate, as a general formula in R ¹ _a Si (OR) polymer consisting of organosiloxane units represented by ² _b O _c, selected from the group consisting of hydroxyl and alkoxy groups 1 It is cured by a condensation reaction of a valence group, and becomes a binder having excellent fire resistance when combined with glass paper, ceramics paper and the like. The polyorganosiloxane unit has an R1 / Si ratio of 1.0 to ¹ .
The range of 6 shows a preferable effect.

The carbon-functional organosilicon compound used in combination with the polyorganosiloxane resin is of a kind generally known as a silane coupling agent, and includes a vinyl group, an amino group, a methacryloxy group or an epoxy group as the carbon functional group. Di- or trialkoxysilanes having a valence organic group are preferred, and the effect of improving the water resistance and insulation of the inorganic laminate can be obtained by blending a small amount of 1% or less of the above-mentioned polyorganosiloxane resin.

Next, a self-adhesive polyorganosiloxane resin is used as a heat-resistant adhesive for the adhesive layer between the metal foil and the laminate.
A polyorganosiloxane adhesive consisting of a polymer diorganosiloxane ending with a hydroxyl group of 00,000 centistokes and a toluene-soluble resin copolymer of SiO ₂ units and R ₂ SiO _0.5 units, for the purpose of further enhancing flame retardancy. Aluminum hydroxide, magnesium hydroxide and the like are added and blended in an amount of 1% or less. In addition, addition of this level does not inhibit the tackiness.

 A preferred embodiment of the present invention will be described.

Example 1. A glass paper 270 μm thick PAPI (Nippon Inorganic Co., Ltd., trade name) mainly made of glass fiber of several microns or less and 10 parts by weight of a polyorganosiloxane resin having one methyl group and a carbon functional organic compound Γ-grosideoxypropyltrimethoxysilane 0.05 as a silicon compound
Varnish adjusted to 20% by weight of a nonvolatile content diluted with a mixture of toluene and isopropyl alcohol (2: 1) as a solvent, and dried at 80 to 100 ° C. Create a sheet.

Next, 0.5 parts by weight of aluminum hydroxide and 100 parts by weight of a 45% by weight non-volatile content of a toluene solution of a polyorganosiloxane resin having self-adhesive properties on one side of each of 50 μm thick stainless steel oil and 50 μm hard aluminum aluminum oil were used as a curing catalyst. An adhesive containing 0.3 parts by weight of aminoxysilane and 5 parts by weight of methyl ethyl ketone is uniformly applied by a roller brush and dried at 60 to 70 ° C.

The two prepreg sheets thus prepared are laminated with a 50 μm-thick stainless steel oil coated with an adhesive and a 50 μm-thick aluminum oil coated with the adhesive layer inside, and press-molded.

The pressing conditions were as follows: after pressing at 40 kg / cm ² at 160 ° C. for 10 minutes, degassing was performed once, and then pressing at 20 kg / cm ² at 180 ° C. for 60 minutes.

The metal clad heat-resistant plate thus obtained does not burn even when exposed to a flame, and can be easily cut with household scissors. In addition, even with an extreme bending of 180 °, a slight layer crack was generated at the bent portion, and a good result meeting the practical purpose of the present invention was obtained.

Example 2. In Examples 1 and 2, 100 μm thick aluminum foil was used instead of 50 μm thick stainless steel oil.
Three 80 μm thick mica prepreg sheets obtained by the same manufacturing method as in Example 2 were coated with the same adhesive as in Example 1.
A metal clad plate obtained by laminating a 50 μm-thick aluminum foil and a 50 μm-thick hard aluminum foil and pressing and forming the same was confirmed to have the same good results as in Example 1.

Example 3. 500 of glass paper or ceramics paper
Using a 100 μm thick aluminum foil and a 50 μm thick hard aluminum foil, the same as in Example 2. Although it has the disadvantage that it is easy, it has been confirmed that the other expected effects can be obtained.

〔The invention's effect〕

As described above, the metal clad heat-resistant plate of the present invention is a prepreg sheet using a base material such as a glass paper or a ceramics paper using a binder mainly composed of a polyorganosiloxane resin having excellent fire resistance, and a heat-resistant adhesive. This is a laminated laminated plate made of a combination of stainless steel oil and aluminum oil coated with, which has excellent fire resistance and can be easily cut into predetermined shapes and dimensions with scissors. In addition, even with a severe bending of 180 °, there is little layer cracking, it can be easily and neatly bent, and it is very safe, convenient and excellent in handling.

Therefore, the field of use is wide, such as a partition for a kitchen that handles the fire of cooking utensils, an underlay, and a repair material for building materials.

In the above-described embodiment, examples of use of stainless steel oil and aluminum oil are shown. However, in combination with metal oil such as copper, a metal clad heat-resistant plate having each characteristic can be easily obtained.

Also, in the case of a laminated laminate of only one side of mica prepreg sheet and metal foil, a sufficient effect can be obtained depending on the intended use.

On the other hand, as a binder of the prepreg sheet, the example shows a case where the main component is a polyorganosiloxane resin having one methyl group, but a maximum of 1.6 methyl groups and phenyl groups are added to one Si molecule. Those containing a polyorganosiloxane resin as a main component can also be used. However, the metal clad heat-resistant plate made in this way is inferior in fire resistance but more excellent in flexible bending workability, and a sufficient effect can be expected depending on the purpose of use.

Claims (4)

(57) [Claims] (1) A plurality of prepreg sheets mainly composed of an inorganic material such as glass paper and ceramics paper are bonded with a binder comprising a polyorganosiloxane resin having excellent fire resistance and a carbon-functional organosilicon processed product.
A metal such as stainless steel, aluminum, copper, or the like, in which a heat-resistant adhesive containing a self-adhesive polyorganosiloxane resin as a main component is applied to at least one surface of a laminated plate laminated and adhered to the surface facing the laminated plate. A metal-clad heat-resistant plate with excellent fire resistance, workability, handleability and bending strength formed by laminating foils. 2. A heat-resistant metal clad plate according to claim 1, wherein both surfaces of said metal foil are made of a combination of different materials. 3. The heat-resistant metal clad plate according to claim 1, wherein said metal foil comprises only one side. 4. A heat-resistant adhesive comprising a flame-retardant, self-adhesive polyorganosiloxane resin containing aluminum hydroxide as a main component, wherein said metal foil is used. Item 4. The metal-clad heat-resistant plate according to item 3 or 3.