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Porcelainized fireproof and heat insulation foamed silicone rubber and preparation method thereof

A silicone rubber and foam technology, applied in the field of foam silicone rubber, can solve the problems of easily reducing other properties of silicone rubber foam materials, accelerating rubber aging, etc., and achieve the prospect of large-scale production, ideal foam structure, and intact cell structure Effect

Inactive Publication Date: 2019-03-15
WUHU YANGZHAN NEW MATERIAL TECH SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The Chinese invention patent with the application number CN201610207781.0 discloses a porcelainized flame-retardant silicone rubber foam material and its preparation method, which includes 100 parts of silicone rubber, 1-10 parts of foaming agent, and 1-8 parts of foaming aid 1-5 parts of vulcanizing agent, 1-40 parts of reinforcing agent, 1-10 parts of structure control agent, 1-40 parts of combustion enhancer, 0-20 parts of vitrified filler, 0-15 parts of vitrified auxiliary agent, of which The reinforcing agent is nano-silica, which is the most traditional reinforcing filler, which improves the mechanical properties of foamed silicone rubber to a certain extent, but the required filler content is often more and the added organic fillers tend to reduce the strength of silicone rubber. Other properties of foam materials and accelerate the aging of rubber

Method used

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  • Porcelainized fireproof and heat insulation foamed silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Composition of raw materials (parts by weight): base rubber: 100 parts of mixed rubber prepared by methyl vinyl silicone rubber, porcelain filler: 40 parts of glass fiber powder, pore diameter of 1000 mesh, mass fraction of 2.85×10 -6 0.5 parts of platinum-divinyl-tetramethyldisiloxane complex and 1 part of silicone oil: the hydroxyl mass fraction of hydroxy silicone oil is 0.17%, and the viscosity is 750mm at 25°C 2 / s0.2 parts, the mass fraction of hydrogen in hydrogen-containing silicone oil is 1%, and the viscosity is 100mm at 25°C 2 / s0.8 parts, foaming agent: 5 parts of dinitrosopentamethylenetetramine, 0.5 parts of vulcanizing agent: take 2,4-dichlorobenzoyl peroxide, di-tert-butylperoxycumylbenzene Mix according to the molar ratio of 1:1, auxiliary vulcanization agent: 0.33 parts of TAIC, and weigh the raw materials according to the number of parts for later use.

[0023] (1) Rubber mixing: Weigh 100g of methyl vinyl silicone rubber and 40g of aluminum hydroxid...

Embodiment 2

[0027] Composition of raw materials (parts by weight): base rubber: 100 parts of mixed rubber prepared by methyl vinyl silicone rubber, porcelain filler: 40 parts of glass fiber powder, pore diameter of 1000 mesh, mass fraction of 2.28×10 -6 0.5 parts of vinyl siloxane chelate of chloroplatinic acid, 1 part of silicone oil: wherein the hydroxyl mass fraction of hydroxy silicone oil is 0.17%, and the viscosity is 750mm at 25°C 2 / s0.5 parts, the mass fraction of hydrogen in hydrogen-containing silicone oil is 1%, and the viscosity is 110mm at 25°C 2 / s 0.5 parts, foaming agent: 8 parts of dinitrosopentamethylenetetramine, 0.5 parts of vulcanizing agent: take di-tert-butyl cumene peroxide and dicumyl peroxide in molar ratio 2: 3 Mixing, co-vulcanizing agent: 0.25 parts of TAIC, weigh the raw materials according to the number of parts for later use.

[0028] (1) Rubber mixing: Weigh 100g of methyl vinyl silicone rubber and 40g of aluminum hydroxide powder and mix them evenly in ...

Embodiment 3

[0032] Composition of raw materials (parts by weight): base rubber: 100 parts of mixed rubber prepared by methyl vinyl silicone rubber, porcelain filler: 40 parts of glass fiber powder, pore diameter of 1000 mesh, mass fraction of 3.42×10 -6 0.5 parts of platinum-divinyl-tetramethyldisiloxane complex, 1.0 parts of silicone oil: the hydroxyl mass fraction of hydroxy silicone oil is 0.17%, and the viscosity is 750mm at 25°C 2 / s0.4 parts, the mass fraction of hydrogen in hydrogen-containing silicone oil is 1%, and the viscosity is 110mm at 25°C 2 / s0.6 parts, foaming agent: 8 parts of dinitrosopentamethylenetetramine, 0.8 parts of vulcanizing agent: take 2,4-dichlorobenzoyl peroxide, di-tert-butylperoxycumylbenzene Mix with dicumyl peroxide at a molar ratio of 1:2:3, vulcanizing agent: 0.33 parts of TAIC, weigh the raw materials according to the number of parts for later use.

[0033] (1) Rubber mixing: Weigh 100g of methyl vinyl silicone rubber and 40g of aluminum hydroxide pow...

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Abstract

The invention discloses porcelainized fireproof and heat insulation foamed silicone rubber and a preparation method thereof. The rubber comprises the following raw materials in parts by weight: 100 parts of base rubber, 10 to 60 parts of porcelain forming filler, 0.1 to 0.5 part of a platinum catalyst, 0.5 to 1.5 parts of silicone oil, 2 to 10 parts of a foaming agent, 0.1 to 0.5 part of a vulcanizing agent, and 0.1 to 0.4 part of a vulcanization accelerator. The foamed silicone rubber has good ceramic effect, does not have surface cracks, is hard in texture, keeps a complete foam structure, ensures that the volume retention rate is 85% or higher, and is excellent in fireproof performance.

Description

technical field [0001] The invention belongs to the technical field of foamed silicone rubber, and in particular relates to a high-performance fireproof and heat-insulating foamed silicone rubber and a preparation method thereof. Background technique [0002] The main chain of silicone rubber is formed by alternating connections of Si-O-Si bonds, and organic groups are connected to the side chains, which belongs to a semi-organic and semi-inorganic polymer. Due to the special skeleton structure, silicone rubber has many unique properties, including good dielectric properties, chemical resistance, UV resistance and mechanical stability, etc. Foam rubber is made of natural or synthetic rubber foam. It has excellent properties such as small mass, softness, elasticity, and low heat transfer. It is widely used in industries such as automobiles, aircraft, building materials, home appliances, chemicals, and daily necessities. However, ordinary foam rubber is extremely flammable, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/05C08L83/04C08K13/04C08K3/22C08J9/10C08J9/02
CPCC08J9/0061C08J9/0066C08J9/0085C08J9/0095C08J9/02C08J9/107C08J2203/04C08J2383/04C08J2483/04
Inventor 张春松
Owner WUHU YANGZHAN NEW MATERIAL TECH SERVICE CO LTD
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