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Solidified silicon rubber combination and producing method for compound molding object of liquid crystal polymer and silicon rubber

A silicone rubber composition, liquid crystal polymer technology, applied in chemical instruments and methods, synthetic resin layered products, printing and other directions, can solve the problems of increased solder reflow temperature, inability to use, peeling, etc., and achieve good transparency. Effect

Active Publication Date: 2010-11-17
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because the solder reflow temperature rises, and the nylon-based resins that have been used in the past do not have sufficient heat resistance, and problems such as discoloration cannot be solved.
[0004] However, the conventional silicone rubber composition cannot firmly bond the package made of LCP, and the unsuitable problem that peeling often occurs at the interface between the package and the silicone rubber during temperature cycling or storage under high temperature and high humidity
[0005] In general, addition-curable silicone rubber compositions try to improve adhesion by adding various silane coupling agents, but the use of conventional tackifiers for LCP has no effect, although some additives can be added to improve adhesion to a certain extent. Silicone rubber material, but the practical adhesiveness is not enough, and because it cannot be made transparent, it cannot be used for optical appliances, etc.

Method used

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  • Solidified silicon rubber combination and producing method for compound molding object of liquid crystal polymer and silicon rubber
  • Solidified silicon rubber combination and producing method for compound molding object of liquid crystal polymer and silicon rubber
  • Solidified silicon rubber combination and producing method for compound molding object of liquid crystal polymer and silicon rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] In 50 parts of polysiloxane (VF) represented by following formula (i).

[0082] [chemical 13]

[0083]

[0084] Joined by SiO 2 Unit 50 mol%, (CH 3 ) 3 SiO 0.5 Unit 42.5 mol% and Vi 3 SiO 0.5 50 parts of vinylmethylsiloxane (VMQ) with a resin structure consisting of 7.5 mol% of units, and the amount of SiH groups is 1.5 times the molar amount of the total amount of vinyl groups in the above-mentioned (VF) and (VMQ) components. Formula (ii)

[0085] [chemical 14]

[0086]

[0087] 0.05 part of octanol-modified solution of organohydrogenpolysiloxane and chloroplatinic acid, 5-ethyl-2-(2-hydroxyl-1,1-dimethylethyl)-5-(hydroxymethyl )-1,3-dioxane diacrylate (trade name: Kayarad R-604, Nippon Kayaku) 1.0 part to prepare a silicone rubber composition. The composition was thermoformed at 150° C. / 4 hr to form a cured product, and the tensile strength, hardness (measured using a type A spring testing machine) and elongation were measured in accordance with JIS K63...

Embodiment 2

[0089] Except that the R-604 used in Example 1 was changed to 2-acrylic acid (octahydro-4,7-methane-1H-indenyl) bis(methylene) ester (trade name: カヤラツド R-684, Nippon Kayaku Except that, a silicone rubber composition was prepared using the same composition as in Example 1 to form a cured product, and the results measured in the same manner as in Example 1 are shown in Table 1.

Embodiment 3

[0091] Except that the R-604 used in Example 1 was changed to lauryl acrylate, a silicone rubber composition was prepared with the same composition as in Example 1, and a cured product was formed. The results measured in the same manner as in Example 1 are shown in Table 1. .

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Abstract

The invention discloses to a solid silicon rubber compound used in liquid crystal polymer, which comprises the organic polysiloxane (A) with aliphatic unsaturated bond, (B) organic hydrogen polysiloxane, at least one (C) acryl, methacryloyl, or the (methyl) acrylate compound that soluble with (A), and (D) platinum group metallic catalyst. With inventive silicon rubber compound, the solid that canadhere the LCP basic plate can be prepared, especially the inventive silicon rubber compound can provides the solid with better transparence, to effectively adhere he liquid crystal polymer basic plate used in the package of light displays, while it can be effectively used in the application of basic plate of optical correlator.

Description

technical field [0001] In particular, the present invention relates to an addition-curable curable silicone rubber composition for adhesion to liquid crystal polymers, and to a curable silicone rubber composition having good adhesion to liquid crystal polymers (LCP), which are thermoplastics. The present invention also relates to a method for producing a composite molded body of a liquid crystal polymer and silicone rubber. Background technique [0002] The silicone rubber composition is used in various applications because it forms a cured product having good properties such as weather resistance and heat resistance, and rubber properties such as hardness and elongation. [0003] In addition, recently, LCP (Liquid Crystal Polymer) has been studied as a material for various packages as a thermoplastic having good heat resistance. This is because the reflow temperature of the solder increases, and the nylon-based resins that have been commonly used in the past do not have su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04B32B27/00C08K3/10C08K5/101C08K5/54C08L83/05C08L83/06C08L83/07
CPCB42D15/008B42D15/042
Inventor 柏木努
Owner SHIN ETSU CHEM IND CO LTD
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