Solvent-free addition liquid state silicon resin and preparation method of solvent-free addition liquid state silicon resin

An addition-type, liquid silicon technology, which is applied in the field of solvent-free addition-type liquid silicone resin and its preparation, can solve the problems of long use time, high energy consumption, and insufficient performance, and achieve good electrical insulation properties and good weather resistance.

Inactive Publication Date: 2011-10-19
HUANGSHAN QIANGLU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a solvent-free addition type liquid silicone resin, which solves the problem of insufficient performance and insufficient storage stability of the existing liquid silicone resin used for surface coating of glass fiber sleeves, silicone tubes, glass fiber cloth and other materials. The problem
[0008] A further object of the present invention is to provide a method for preparing a solvent-free addition type liquid silicone resin, which solves the problems of long time consumption and high energy consumption in the existing liquid silicone resin preparation method

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1, the preparation of vinyl silicone oil for liquid silicone resin

[0025] Use D4 (octamethyltetrasiloxane) or DMC monomer to undergo dehydration polymerization in a reactor, raise the temperature to 180°C, add vinyl double-caps, and then remove low-molecular substances, and the weight ratio of ethylene content in the output is 0.3%. , Vinyl silicone oil with a viscosity of 10000-50000cs.

Embodiment 2

[0026] Embodiment 2, preparation of a solvent-free addition type liquid silicone resin

[0027] In parts by weight, prepare the following raw materials: 100 parts of vinyl silicone oil with an ethylene content of 0.3% by weight and a viscosity of 10000-50000cs; 38 parts of fumed silica (particle size 10-20nm, specific surface area 160-300m 2 / g); treatment agent comprises 5 parts of hexamethylsilazane, 0.5 part of vinyltriethoxysilane, 0.5 part of dimethyldiethoxysilane; and 2 parts of water; 0.06 part of release agent stearic acid ; Inhibitor methyl butynol 0.001 parts, crosslinking agent hydrogen-containing silicone oil 0.6 parts; prepared by addition method. The preparation method comprises the following steps:

[0028]1. Put half of the total weight of vinyl silicone oil (product of Example 1) and silicon dioxide into the kneader, then add hexamethyldisilazane, vinyltriethoxysilane, dimethyldiethoxysilane , water, stearic acid, and kneaded for 2 hours to obtain a rubber ...

Embodiment 3

[0031] Embodiment 3, preparation of a solvent-free addition type liquid silicone resin

[0032] In parts by weight, prepare the following raw materials: 130 parts of vinyl silicone oil with an ethylene content of 0.3% by weight and a viscosity of 10000-50000cs; 58 parts of fumed silicon dioxide (particle size 10-20nm, specific surface area 160-300m 2 / g); treatment agent includes 10 parts of hexamethylsilazane, 2 parts of vinyltriethoxysilane, 2 parts of dimethyldiethoxysilane; and 5 parts of water; 0.09 part of release agent stearic acid ; 0.003 parts of methyl butynol inhibitor, 0.8 parts of hydrogen-containing silicone oil as a crosslinking agent; 2 parts of aluminum hydroxide as a high-temperature resistance additive, prepared by an addition method. The preparation method comprises the following steps:

[0033] 1. Put half of the total weight of vinyl silicone oil and silicon dioxide into the kneader, then add hexamethyldisilazane, vinyltriethoxysilane, dimethyldiethoxysi...

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Abstract

The invention relates to a preparation method of solvent-free addition liquid state silicon resin. The solvent-free addition liquid state silicon resin comprises the following raw materials according to part by weight: 100-130 parts of ethylene group silicone oil with, 0.3 percent by weight of ethylene and 10000-50000cs of viscosity, 38-58 parts of gas phase made silicon dioxide with 10-20nm of grain size and 160-300m2 / g of specific surface area, treatment agents comprising 5-10 parts of hexamethyldisilazane, 0.5-2 parts of vinyl triethoxy silicane, 0.5-2 parts of dimethyl ethoxydimethylsilane, 2-5 parts of water, 0.06-0.09 part of releasing agent stearic acid, 0.001-0.003 part of inhibitor methylbutynol, and 0.6-0.8 part of cross-linking agent containing hydrogen silicone oil. The addition preparation method comprises the following steps of preparing, kneading, banburying, grinding and filter pressing of ethylene group silicone oil, so as to obtain the liquid state silicon resin. The problems that the liquid state silicon resin for coating on the surfaces of materials such as glass fiber sleeves, silicone tubes, glass fiber cloths and the like has poor performance and is unstable for storage.

Description

technical field [0001] The invention relates to a silicone resin and a preparation method thereof, in particular to a solvent-free addition type liquid silicone resin used for surface coating of glass fiber sleeves, silicone tubes, glass fiber cloth and the like and a preparation method thereof. Background technique [0002] In polysiloxane molecules, the ratio of organic substituents (R) to silicon atoms (Si) is an important parameter that determines the form of the product. When R / Si<2, the product is silicone resin; when R / Si≈2, it is raw rubber in high viscosity plastic state, that is, silicone rubber; when R / Si>2, it is low molecular weight oil, Called silicone oil. Silicone resin is a highly cross-linked network polyorganosiloxane, usually made of methyltrichlorosilane, dimethyldichlorosilane, phenyltrichlorosilane, diphenyldichlorosilane or methylphenyl Various mixtures of dichlorosilanes, in the presence of organic solvents such as toluene, are hydrolyzed at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/05C08K13/02C08K3/36C08K3/22C08G77/20
Inventor 李讨饭赵强程琳根王晶李萍
Owner HUANGSHAN QIANGLU NEW MATERIALS
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