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Halogen-free flame retardant, high-temperature resisting and rapidly solidified deacetone silicon rubber and preparation method thereof

A fast-curing, flame-retardant technology, used in adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of high price and untimely supply, and achieve fast curing speed, mechanical properties and mechanical properties. The effect of improved performance and simple preparation method

Inactive Publication Date: 2013-04-17
SHANGHAI HUITIAN NEW CHEMICAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In foreign countries, Shin-Etsu Corporation of Japan has developed flame-retardant acetone-free liquid silicone rubber KE-3424G, KE3494, and KE3490, which have achieved good commercial application, but the price is expensive and the supply is not timely.

Method used

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  • Halogen-free flame retardant, high-temperature resisting and rapidly solidified deacetone silicon rubber and preparation method thereof
  • Halogen-free flame retardant, high-temperature resisting and rapidly solidified deacetone silicon rubber and preparation method thereof
  • Halogen-free flame retardant, high-temperature resisting and rapidly solidified deacetone silicon rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 100 parts by weight of hydroxyl-terminated polydimethylsiloxane (viscosity of 6000 mPa·s at 25°C), 100 parts by weight of surface-treated magnesium hydroxide, 20 parts by weight of surface-treated zinc borate, 8 parts by weight of white carbon black Parts by weight, 10 parts by weight of iron oxide red was added to a kneader at a temperature of 120°C, kneaded and dehydrated for 240 minutes, and the base material was cooled for later use; the base material was added to a double planetary mixer, and methyl tris(isopropenyloxy ) silane 2 weight parts, phenyl tris (isopropenyloxy) silane 6 weight parts, vacuumize and stir for 20~30min (vacuum degree is above -0.095MPa), add γ-aminopropyltriethoxysilane 1 weight Parts, 0.6 parts by weight of 1,1,3,3-tetramethylguanidinopropyltrimethoxysilane, vacuumized and stirred for 20 to 30 minutes, then discharged and sealed for storage.

Embodiment 2

[0047] 100 parts by weight of hydroxyl-terminated polydimethylsiloxane (viscosity of 8000 mPa·s at 25°C), 120 parts by weight of surface-treated magnesium hydroxide, 20 parts by weight of surface-treated zinc borate, 8 parts by weight of white carbon black Parts by weight, 10 parts by weight of iron oxide red was added to a kneader at a temperature of 120°C, kneaded and dehydrated for 240 minutes, and the base material was cooled for later use; the base material was added to a double planetary mixer, and chloromethyl tris(isopropylene oxide base) silane 4 parts by weight, phenyl tris (isopropenyloxy) silane 4 parts by weight, after vacuum stirring for 20~30min (vacuum degree is above -0.095MPa), add N-(β-aminoethyl)-γ - 1 part by weight of aminopropyltrimethoxysilane, 0.7 part by weight of 1,1,3,3-tetramethylguanidinopropyltrimethoxysilane, vacuumize and stir for 20 to 30 minutes, then discharge and seal for storage.

Embodiment 3

[0049] 100 parts by weight of hydroxyl-terminated polydimethylsiloxane (viscosity of 10,000 mPa·s at 25°C), 120 parts by weight of surface-treated magnesium hydroxide, 20 parts by weight of surface-treated zinc borate, and 10 parts by weight of white carbon black Parts by weight, 8 parts by weight of nano-cerium oxide were added to a kneader at a temperature of 120°C, kneaded and dehydrated for 240 minutes, and the base material was cooled for later use; the base material was added to a double planetary mixer, and chloromethyl tris(isopropylene oxide Base) silane 4 weight parts, phenyl tris (isopropenyloxy) silane 4 weight parts, vacuumize and stir for 20~30min (vacuum degree is above -0.095MPa), add γ-[(2,3)-epoxy 1 part by weight of propyl]propyltrimethoxysilane, 0.8 part by weight of 1,1,3,3-tetramethylguanidinopropyltriethoxysilane, vacuumize and stir for 20 to 30 minutes, then discharge and seal for storage.

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Abstract

The invention discloses a halogen-free flame retardant, high-temperature resisting and rapidly solidified deacetone silicon rubber and a preparation method thereof. Hydroxy-end-capped polydimethylsiloxane is used as the main body and is compounded with a thermal-resisting additive and a flame retardant additive, wherein the halogen-free flame retardant, high-temperature resisting and rapidly solidified deacetone silicon rubber comprises the following ingredients by weight: 100 parts of the hydroxy-end-capped polydimethylsiloxane serving as a main body, 1-50 parts of polydimethylsiloxane, 5-18 parts of silicon oxide, 5-15 parts of thermal-resisting additive, 50-200 parts of flame retardant additive, 0.5-2.5 parts of tackifier, 0.5-1 part of organic guanidine catalyst and 5-8 parts of deacetone siloxane cross-linking agent; the thermal-resisting additive is one or a mixture of several of iron oxide red, cerium oxide of which the purity is not less than 90% and tin oxide of rutile structure; and the flame retardant additive is one or a mixture of several of aluminum hydroxide, magnesium hydrate, zinc borate, phosphate ester, phosphonate, phosphine oxide and organic phosphorus. The deacetone silicon rubber has good thermal resistance, flame retardant effect and mechanical properties at 250-300 DEG C, and is simple in preparation method and high in production efficiency.

Description

technical field [0001] The invention relates to a room temperature vulcanized silicone rubber, in particular to an acetone-free room temperature vulcanized silicone rubber and a preparation method thereof. Background technique [0002] One-component room temperature vulcanization (hereinafter referred to as RTV-1) silicone rubber has excellent heat resistance, natural aging resistance, moisture resistance and air permeability, as well as excellent electrical properties and chemical inertness. It is widely used in medical treatment and daily life. RTV-1 silicone rubber can maintain elasticity for a long time in an extremely wide temperature range (-60~200°C), and has excellent high temperature resistance. However, with the advancement of modern technology, higher requirements are put forward for its heat resistance. Requirements, such as: the functions of electronic products are becoming more and more powerful, which requires the development of electronic components in the d...

Claims

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Application Information

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IPC IPC(8): C08L83/06C08L83/04C08K13/06C08K9/06C08K3/22C08K3/38C08K3/36C08K5/31C08K5/5425C09J183/06C09J183/04C09J11/04C09J11/06
Inventor 周渭国廖江涛何秀冲章锋
Owner SHANGHAI HUITIAN NEW CHEMICAL MATERIALS CO LTD
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