JP2007138600A - Decorative joint material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative joint material 1 made of silicone rubber presenting external design of a grained pattern and having excellent wear resistance, airtightness, weather resistance, water resistance and heat resistance. <P>SOLUTION: The decorative joint material 1 made of silicone rubber comprises silicone rubber, and scale-like granules 2 and a pigment neither melted nor discolored at the vulcanizing temperature of silicone rubber, and exhibits the grained pattern. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an elastic decorative joint material, and more particularly, to a silicone rubber cosmetic joint material having a grainy pattern.

  Elastic joint materials are used throughout the building as a sealing material to maintain the water and air tightness of the building. In recent years, wall materials that have a design simulating natural materials while using synthetic materials are easily provided, so joint materials that are visible on the surface can be matched to them, and it is not just white or black but has a sense of unity with the wall material A decorative joint material is required.

  On the other hand, joint materials used to maintain the watertightness and airtightness of buildings are directly affected by ultraviolet rays, temperature, moisture, etc., such as around windows and bathrooms, and are used in places that are susceptible to mold, etc. In combination with high water resistance, water resistance, and high heat resistance, the design will not disappear even when rubbed with a bleaching agent, etc. High wear resistance is required so that the pattern does not disappear.

Conventionally, a decorative baseboard has been proposed in which a granular material that is not thermally deformed at the processing temperature of the resin is dispersed in a thermoplastic resin to reveal a granite-like pattern or a grain-like flow pattern (see Patent Document 1). ).
Japanese Utility Model Publication No. 6-82273

  However, in order to give the thermoplastic resin a function as a sealing material for maintaining watertightness and airtightness, it is necessary to add a large amount of plasticizer or the like to have flexibility, and the mixed plasticizer is added to the wall material. There was a problem of migration and contamination. In addition, flexible thermoplastic elastomers are often flammable, and there are environmental problems such as the use of halogen-based flame retardants in order to provide flame retardancy suitable for building wall materials. There was.

  Accordingly, the present invention solves the above-mentioned problems of the prior art, has a sense of unity with the wall material of the stone-tone appearance design, and has wear resistance, air tightness, weather resistance, water resistance, heat resistance, and It is an object to provide a silicone rubber decorative joint material having excellent environmental characteristics.

  To achieve the above object, the present invention provides a silicone rubber cosmetic joint material comprising silicone rubber, scaly particles that do not melt or discolor at the vulcanization temperature of the silicone rubber, and a pigment. It is characterized by a decorative joint material with a stone-tone pattern.

  In addition to the structure of claim 1, the silicone rubber decorative joint material according to claim 2 has 0.1 to 10 parts by weight of the scaly particles and 100% by weight of the pigment with respect to 100 parts by weight of the silicone rubber. It is characterized by a decorative joint material composed of 1 to 10 parts by mass.

  The cosmetic joint material made of silicone rubber according to claim 3 is characterized in that, in addition to the structure of claim 1 or 2, the scaly particles are colored mica having an average particle diameter of 0.01 mm to 2 mm.

  In addition to the structure as described in any one of Claims 1 to 3, the silicone rubber decorative joint material according to claim 4 is characterized by a cosmetic joint material in which the pigment is titanium oxide.

  According to the cosmetic joint material made of silicone rubber according to claim 1, since it consists of silicone rubber, scaly particles that do not melt or discolor at the vulcanization temperature of the silicone rubber, and pigment, it consists of stone base and phenocryst. A granite-like pattern appears, which can give a sense of unity with a wall material with a stone-like appearance design, and because it uses silicone rubber, it is airtight, weatherproof, water-resistant, heat-resistant Like a real stone material that is excellent in performance, a silicone rubber decorative joint material that does not lose its design pattern even when the surface is worn can be provided.

  According to the silicone rubber decorative joint material according to claim 2, in addition to the effect of claim 1, 0.1 to 10 parts by mass of scaly particles and pigment with respect to 100 parts by mass of silicone rubber Since it consists of 0.1 to 10 parts by mass, it is possible to provide a silicone rubber decorative joint material in which the phenocryst pattern is conspicuously observed in granite tone while having sufficient opacity.

  According to the silicone rubber decorative joint material according to claims 3 and 4, in addition to the effect of claim 1 or 2, since the scaly particles are colored mica having an average particle diameter of 0.01 mm to 2 mm, Even when observed at a distance, the colored mica is clearly observed as a phenocryst pattern, and the pigment is titanium oxide, so it has a highly opaque texture like a real stone, natural White granite-like silicone rubber cosmetic joint material can be provided.

  Hereinafter, embodiments of the present invention will be described in detail. As shown in the cross-sectional view of FIG. 1, the silicone rubber decorative joint material 1 of the present application is obtained by extruding a silicone rubber into a bead-type or gasket-type cross-sectional shape or a flat-plate tape shape. 3. It is used to seal the seams of wall materials 4 which are composed of dark black scale-like particles 2 such as black, brown and gold, and pigments, and are observed in the shape of granite stones and phenocrysts. It is a decorative joint material.

  Then, as shown in the plan view of FIG. 2, the portion observed alongside the wall material 4 (the pattern on the wall material side is omitted in the figure) during use includes the stone base and phenocryst of the granite. Since the stone-like pattern that appears is different from the surface design provided by printing or painting, the design pattern does not disappear even if the surface is worn.

  The silicone rubber of the present invention is reinforced with vinyl group-containing dimethyl silicone raw rubber, vinyl group-containing phenyl silicone raw rubber, vinyl group-containing fluorosilicone raw rubber, etc., or modified products thereof, if necessary, such as fumed silica and precipitated silica. A porous silica filler is added and vulcanized and cured.

  As the crosslinking agent for addition reaction used in the vulcanization treatment, organohydrogenpolysiloxane having two or more SiH groups in one molecule is used. As this organohydrogenpolysiloxane, linear, cyclic, molecular, Any of the branched structures may be used, and a known organohydrogenpolysiloxane can be used as a curing agent for the addition reaction curable silicone rubber composition. The compounding amount of the organohydrogenpolysiloxane is preferably 0.01 to 20 parts by mass with respect to 100 parts by mass of the organopolysiloxane as the silicone rubber compound component. Furthermore, when an organic peroxide is used in combination as a vulcanization aid, it is effective in improving physical properties such as strength and strain of rubber. This includes benzoyl peroxide, bis 24 dichlorobenzoyl peroxide, dicumyl peroxide, Examples include di-tertiary butyl peroxide, 25-dimethyl-2 5-bis (tertiary butyl peroxy) hexane, and the like. Further, non-reinforcing silica may be added to adjust the heat resistance improver and hardness.

  Furthermore, it is preferable to add a known platinum catalyst inhibitor such as methylvinylcyclotetrasiloxane, acetylene alcohols, siloxane-modified acetylene alcohol, hydroperoxide or the like to the silicone raw rubber using a crosslinking reaction by this addition reaction.

  The addition reaction catalyst may be any conventionally known catalyst. Specifically, a platinum group metal simple substance and a compound thereof can be used. For example, particulate platinum metal adsorbed on a support such as silica, alumina or silica gel, platinous chloride, chloroplatinic acid, chloroplatinic acid hexahydrate complex with olefin or divinyldimethylpolysiloxane, chloroplatinic acid Examples thereof include platinum-based catalysts such as hexahydrate alcohol solutions, palladium catalysts, and rhodium catalysts. The addition amount of these catalysts is usually used in the range of 1 to 1,000 ppm in terms of the amount of platinum-based metal, but preferably in the range of 10 to 500 ppm. If it is less than 1 ppm, the crosslinking reaction may not be sufficiently promoted and curing may be insufficient. Even if it is added in excess of 1,000 ppm, there is little influence on the reactivity and it is uneconomical.

  The scaly particles 2 of the present invention include artificial particles such as granular pattern materials and stone pattern materials that are commercially available under the trade names such as flaky metals such as aluminum flakes, glass flakes, and resin colors, muscovite and phlogopite. Examples thereof include natural mica particles such as biotite, processed particles such as kaolinite and vermiculite, and colored mica obtained by coating the surface of mica pieces with a pigment and a resin binder and heat-curing them. In particular, colored mica is less likely to be broken and discolored, and because it is a scaly particle, it looks like a granite particle on the surface of a polished granite, and it looks artificially. Since it is made, any color can be selected.

  The addition amount of the scaly particles 2 to the silicone rubber is preferably 0.1 to 10 parts by mass with respect to 100 parts by mass of the silicone rubber. If it is 0.1 parts by mass or less, it does not appear as a phenocryst. On the other hand, even if it is added over 10 parts by mass, it does not appear as a phenocryst, but appears as a single color of the scaly particles 2.

  The average particle size of the colored mica of the present invention is preferably an average particle size of 0.01 mm to 2 mm, which is a range in which the colored mica is clearly observed as a phenocryst pattern even when observed at a distance without being crushed finely. More preferably, the average particle size is 0.07 mm to 0.15 mm.

  As the pigment of the present invention, a commonly used highly concealing pigment such as titanium oxide, zinc sulfide, pearl pigment, bengara or the like can be used, and these pigments can be used together or in combination with other pigments. In particular, it is preferable to use titanium oxide, which is a white pigment, in consideration of processability, cost, and the like when a stone base having a grainy pattern appears and is mixed with silicone rubber.

  The amount of the pigment added should be such that the portion corresponding to the granite stone base has an opaque texture and does not obscure the scaly particles 2 in consideration of the concealing property of each pigment. The addition amount is preferably 10 parts by mass or less with respect to 100 parts by mass of the silicone rubber. If added in excess, the flexibility and adhesion of the silicone rubber may be impaired, and the performance as a sealing material that maintains watertightness and airtightness may be impaired.

  The silicone rubber decorative joint material 1 according to the present invention may have a durometer type A hardness of 30 to 90 degrees. In the case of a sealing material application that requires watertightness and airtightness, a material of 50 to 70 degrees is more preferably used.

  In the silicone rubber composition for producing the silicone rubber cosmetic joint material 1 of the present invention, the above-described components are uniformly mixed using a rubber kneader such as a two-roll roll, a Banbury mixer, or a dough mixer (kneader). Can be obtained.

  In order to form the silicone rubber decorative joint material 1, it is convenient to use an extrusion molding machine, but the molding method can apply sufficient heat to vulcanize the silicone rubber other than continuous vulcanization by extrusion molding. If it is a method, press molding, injection molding, etc. may be sufficient and it does not restrict | limit in particular.

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to the following examples as long as the gist of the present invention is not exceeded.
[Example 1]

  For 100 parts by mass in total of 50 parts by mass of silicone rubber compound “KE571U” (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) and 50 parts by mass of silicone rubber compound “KE971U” (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) A silicone rubber compound was prepared by adding 1 part by mass of colored mica “HB-82S57T” (trade name, manufactured by Yamaguchi Mica Industry Co., Ltd.), 2 parts by mass of titanium oxide, and an appropriate amount of catalyst.

  From the silicone rubber compound thus prepared, a silicone rubber cosmetic joint material 1 was obtained by an extruder at a vulcanization temperature of 450 ° C.

The obtained silicone rubber decorative joint material 1 was bonded to a white granite wall material, and the sense of unity between the wall material and the decorative joint material 1 was visually evaluated from a point about 1 m away from the wall material. The evaluation results are shown in Table 1.
[Example 2]

Example 1 was repeated except that the mica was changed to colored mica having an average particle diameter of 0.01 mm.
[Example 3]

Example 1 was repeated except that the mica was changed to colored mica having an average particle diameter of 2 mm.
[Example 4]

The procedure was the same as Example 1 except that the amount was changed to 0.1 part by weight of colored mica having an average particle diameter of 1 mm.
[Example 5]

The procedure was the same as Example 1 except that the amount was changed to 10 parts by mass of colored mica having an average particle diameter of 1 mm.
[Comparative Example 1]

The procedure was the same as Example 1 except that the color mica was changed to 5 parts by mass with an average particle size of 5 mm.
[Comparative Example 2]

The procedure was the same as Example 1 except that the amount was changed to 20 parts by mass of colored mica having an average particle diameter of 1 mm.
[Comparative Example 3]

  Example 1 was repeated except that the titanium oxide was changed to 12 parts by mass.

  Even with white granite, the size of the phenocryst varies depending on the production area, etc. As is clear from Examples 1 to 5, 2 parts by mass of titanium oxide is dispersed in the silicone rubber, and the average particle size is also dispersed. A silicone rubber decorative joint material mixed with 0.1 to 10 parts by weight of colored mica of 0.01 mm to 2 mm has a stone base, a phenocryst pattern, and a texture that can be mistaken for white granite. A sense of unity with the wall material was obtained.

  From Comparative Example 1, the silicone rubber decorative joint material in which 5 parts by mass of colored mica having an average particle diameter of 5 mm was mixed did not appear as white granite because the particle size of the phenocryst was too large.

  From Comparative Example 2, the silicone rubber decorative joint material mixed with 20 parts by mass of colored mica having an average particle diameter of 1 mm looked black and was not seen as white granite.

  From Comparative Example 3, the silicone rubber decorative joint material in which 12 parts by mass of titanium oxide is dispersed has a strong opacity, makes it difficult to see the colored crystals of mica, unnaturally white and no gloss, and looks like white granite There wasn't.

  Surface-polished white granite is a high-grade building material that has a bright, heavy texture, beautiful luster, and phenocrysts are clearly observed in the stone base. In addition, wall materials using synthetic materials have been developed that have a high-class feeling following the stone pattern of white granite. According to the cosmetic joint material of the present invention, since silicone rubber is used, it is excellent in performance as a sealing material that maintains watertightness and airtightness, and the stone-tone pattern does not disappear, and such a high-class feeling. Even if it is used for a joint part of a certain natural granite-like wall material, it is possible to provide a decorative joint material that provides a sense of unity with the wall material.

  Changing the titanium oxide to bengara, pearl pigment, fluorescent zinc sulfide, or using it together with titanium oxide, cherry granite-like or red granite-like appearance design, appearance that emits a flash like feldspar It is possible to match the wall material of the design.

It is sectional drawing of the cosmetic joint material extruded by the bead type | mold of this invention. It is a top view of the decorative joint material extruded into the bead mold of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Makeup joint material 2 Scale-like particle | grains 3 Silicone rubber base material 4 Wall material

Claims (4)

  A cosmetic joint material comprising a silicone rubber, scaly particles that do not melt or discolor at the vulcanization temperature of the silicone rubber, and a pigment, and exhibiting a stone-like pattern.   The cosmetic joint material according to claim 1, comprising 0.1 to 10 parts by mass of the scaly particles and 0.1 to 10 parts by mass of the pigment with respect to 100 parts by mass of the silicone rubber.   3. The cosmetic joint material according to claim 1, wherein the scaly particles are colored mica having an average particle diameter of 0.01 mm to 2 mm. The cosmetic joint material according to any one of claims 1 to 3, wherein the pigment is titanium oxide.

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