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High hardness and oil resistance silicon resin component with amide base and preparation method thereof

An amide group-containing, high-hardness technology, applied in the field of silicone resin, can solve the problems of low cross-linking density and unsuitable for rigid resin applications.

Active Publication Date: 2014-12-10
CHINA BLUESTAR CHENGRAND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem that the silicone resin prepared by introducing amide groups into polysiloxane molecules in the above-mentioned prior art has low crosslinking density, and the cured product is an elastomer rather than a rigid resin, which is not suitable for the application of rigid resins. To solve the problem, provide a high-hardness oil-resistant silicone resin composition, so that the introduced amide groups can be distributed more uniformly, and the number can be larger, and it is suitable for rigid resin polymers

Method used

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  • High hardness and oil resistance silicon resin component with amide base and preparation method thereof
  • High hardness and oil resistance silicon resin component with amide base and preparation method thereof
  • High hardness and oil resistance silicon resin component with amide base and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] Take 150g of N,N'-bis[γ-(diethoxymethylsilyl)propyl]terephthalamide and 2.6g of water as raw materials in a 250ml container equipped with a reflux condenser, stirrer and thermometer Stir and heat up in a three-necked flask, maintain at 50-70°C for 3 hours, then let it stand and cool to room temperature to obtain light yellow viscous liquid silicone resin. It was coated on a clean glass sheet, heated in an oven at 200° C. for 2 hours, and cured to obtain a light yellow transparent hard coating 1 . The results of the oil resistance test are shown in the table.

Embodiment 2

[0092] According to the synthesis method of Example 1, with 62.2g N, N'-bis[γ-(trimethoxysilyl)propyl]terephthalamide and 40.8g hydroxyl-terminated polydimethylsiloxane ( The molecular weight is about 570, the hydroxyl content is 6%) as the raw material, and the colorless transparent viscous liquid silicone resin is obtained by reacting at 60-100°C for 3 hours. It was coated on a glass sheet and cured by heating in an oven at 200° C. for 2 hours to obtain coating 2 . The results of the oil resistance test are shown in the table.

Embodiment 3

[0094] According to the same synthetic method as in Example 2, 153g N, N'-bis[γ-(triethoxysilyl)propyl] malonamide and 30g hydroxyl-terminated polydimethylsiloxane (molecular weight 570, hydroxyl content 6%) as the raw material to prepare a light yellow transparent viscous liquid silicone resin, which is coated on a glass plate and cured by heating in an oven at 250°C for 30 minutes to obtain a hard coating 3. The results of the oil resistance test are shown in the table.

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Abstract

The invention relates to a high hardness and oil resistance silicon resin component with amide base and a preparation method thereof. The high hardness and oil resistance silicon resin component comprises at least one of diamide alkane double-alkoxy silicane shown as a formula I, or a hydrolyzing condensation preformed polymer of the diamide alkane double-alkoxy silicane, or a composition of the diamide alkane double-alkoxy silicane and the hydrolyzing condensation preformed polymer, and the preformed polymer is provided with the characteristics of oil resistance, medium resistance, rigidity and high hardness. After stabilization of the high hardness and medium resistance silicon resin component, a hardness of a pencil can reach 8H. The silicon resin component can be used as paint, adhesive, resin base material of thermosetting molding resin or composite materials and the like.

Description

technical field [0001] The invention relates to a silicone resin and a preparation method thereof. Specifically, the invention relates to an amide group-containing high-hardness oil-resistant silicone resin composition and a preparation method thereof, belonging to the technical field of silicone resins. Background technique [0002] The usual silicone resin is formed by hydrolyzing and condensing hydrocarbyl chlorosilane or hydrocarbyl alkoxysilane through hydrolysis and polycondensation. The hydrocarbon group generally refers to methyl or phenyl, and its curing active group can be hydroxyl or alkoxy The base is solidified by dehydration polycondensation by heating or by hydrolysis after moisture absorption at room temperature and then dealcoholization polycondensation. The body-shaped polysiloxane molecule formed by curing has high and low temperature resistance due to the high thermal stability of the Si-O-Si chain and the hydrocarbon group substituted on the silicon atom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/26C08G77/44C08G77/16C07F7/18C09D183/08C09D183/10C09J183/08C09J183/10
Inventor 朱良波唐小斗钟云竹
Owner CHINA BLUESTAR CHENGRAND CO LTD
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