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Flame-retardant dealcoholization type room-temperature curing silicon rubber

A room temperature curing, silicone rubber technology, applied in adhesives, other chemical processes, chemical instruments and methods, etc., can solve the problems of poor storage stability, restrictions, health and environmental hazards, and achieve good stability and excellent bonding force, no corrosive effect

Active Publication Date: 2011-04-06
MIANYANG WELLS ELECTRONICS MATERIAIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, according to the requirements of ROHS, REACH and other regulations, some flame retardants with very good flame retardant efficiency, such as halogen flame retardants, are strictly restricted due to harm to health and the environment
Conventional flame retardants such as phosphide, red phosphorus, ammonium polyphosphate, antimony trioxide, etc. are likely to cause poor storage stability and should not be added to room temperature curing silicone rubber
These problems cause some dealcoholized flame retardant silicone rubbers to fail to provide satisfactory flame retardant properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 100g trimethoxysilane-terminated polydimethylsiloxane with a viscosity of 5000mPa.s, 15g fumed silica TS720 (specific surface area 120m 2 / g), 80 g of aluminum hydroxide with a particle size of 5 microns, 10 g of zinc carbonate with a particle size of 8 microns, 5 g of methyltrimethoxysilane, 20 parts per million (calculated as platinum content) of divinyltetramethyldicarbonate Siloxane and chloroplatinic acid reactants, 2 g of bis(isopropoxy)bis(ethyl acetoacetate) titanate, 1 g of aminopropyltriethoxysilane and glycidyl etherpropyltrimethoxysilane complex . Add each component in sequence in a vacuum high-speed mixer, mix it evenly, and pack it into a plastic silicone tube. The results are shown in Table 1.

Embodiment 2

[0030] 100g of trimethoxysilane-terminated polydimethylsiloxane with a viscosity of 5000mPa.s, 50g of stearic acid treated with a specific surface area of ​​25m 2 / g of light calcium carbonate, 80g of aluminum hydroxide with a particle size of 5 microns, 10g of zinc carbonate with a particle size of 8 microns, 5g of methyltrimethoxysilane, 20 parts per million (calculated as platinum content) of chloroplatinic acid Isopropanol solution, 2 g of bis(isopropoxy)bis(ethyl acetoacetate) titanate, 1 g of aminopropyltriethoxysilane and glycidyl etherpropyltrimethoxysilane complex. The mixing method is the same as that in Example 1.

Embodiment 3

[0041] 100g trimethoxysilane-terminated polymethylphenylsiloxane with a viscosity of 3000mPa.s, 15g fumed silica TS720 (specific surface area 120m 2 / g), 120 g of aluminum hydroxide with a particle size of 5 microns, 5 g of methyltrimethoxysilane, 20 ppm of divinyltetramethyldisiloxane and chloroplatinic acid reactant (based on platinum content) , 2g of two (isopropoxy) two (ethyl acetoacetate) titanate, 1g of aminopropyl triethoxysilane and glycidyl ether propyl trimethoxysilane complex. The mixing method is the same as that in Example 1. Test its surface dry time for 10 minutes, and the flame retardant V-0 grade.

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PUM

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Abstract

The invention provides a flame-retardant dealcoholization type room-temperature curing silicon rubber, comprising: (1) polysiloxane, wherein the end of the polysiloxane is trimethoxy; (2) reinforcing fillers such as white carbon black, calcium carbonate and the like; (3) flame-retardant fillers such as aluminum hydroxide, zinc carbonate, carbon black and the like; (4) platinum compound added after the mixing; and (5) a condensation curing agent which comprises methyltrimethoxy silane, a silane coupling agent, organic titanate or organic tin compounds. The flame retardant dealcoholization type room-temperature curing silicon rubber of the invention has the characteristics of quick curing, excellent binding force to various base materials, good flame retardance, no halogen and the like.

Description

technical field [0001] The present invention relates to a kind of silicone rubber, in particular to a kind of flame retardant dealcoholization type room temperature curing silicone rubber which has the characteristics of rapid curing, halogen-free flame retardant and dealcoholization type. Background technique [0002] In this field, there are a large number of one-component silicone rubbers that can be cured at room temperature when in contact with air moisture, including deacidification type room temperature curing silicone rubber, deoxime type room temperature curing silicone rubber, dealcoholization type room temperature curing silicone rubber , Deacetone room temperature curing silicone rubber. The deacidification type room temperature curing silicone rubber and the deoxime type room temperature curing silicone rubber are limited in application in the electrical and electronic industry because the by-products released during curing show acidity or slight alkalinity, whi...

Claims

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Application Information

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IPC IPC(8): C08L83/06C08K13/02C08K3/36C08K3/26C08K3/02C08K3/22C08K3/04C08K5/5415C08K13/06C08K9/10C08K9/06C09K3/10C09J183/06
Inventor 刘良军赵元刚陆南平
Owner MIANYANG WELLS ELECTRONICS MATERIAIS
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