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Foamed silicone rubber material, and preparation method and applications thereof

A foaming silicone rubber and material technology, applied in the field of rubber materials, can solve the problems of soluble substance residue, high production cost, waste of water resources, etc., and achieve controllable foam shape, uniform foaming, and good foaming uniformity Effect

Active Publication Date: 2018-06-08
GUANGDONG BIOMAX SIANDF NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shape of the foamed silicone rubber material prepared by this method is controllable and the cell structure is uniform. However, a large amount of water washing and multiple washings are required for salt precipitation, which leads to serious waste of water resources, long production cycle, high production cost, and the risk of residual soluble substances.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of foamed silicon rubber material, the preparation method of described foamed silicon rubber material is as follows:

[0033] S1: Add 100 parts by mass of polysiloxane with vinyl group and 40 parts by mass of reinforcing filler into the kneader in batches, mix and stir evenly to make the base material, wherein the vinyl content of polysiloxane with vinyl group is 0.20% (mass fraction), the viscosity is 10000CS, and the reinforcing filler has a specific surface area of ​​200m 2 / g of hydrophobic silica. Divide the base material into two parts, wherein one part is added with 0.1 mass parts of platinum catalyst as component A per 100 mass parts of base material, and the other part is added with 2.0 mass parts of hydrogen-containing polysiloxane per 100 mass parts of base material as Component B, the hydrogen-containing polysiloxane used has a viscosity of 100CS and a hydrogen content of 0.8% (mass fraction);

[0034] S2: Add component A and component B into the rea...

Embodiment 2

[0038] A kind of foamed silicon rubber material, the preparation method of described foamed silicon rubber material is as follows:

[0039] S1: Add 100 parts by mass of polysiloxane with vinyl group and 30 parts by mass of reinforcing filler into the kneader, mix and stir evenly to make the base material, wherein the polysiloxane with vinyl group has a vinyl content of 0.10% (mass fraction), the viscosity is 20000CS, and the reinforcing filler has a specific surface area of ​​200m 2 / g of hydrophobic silica. Divide the base material into two parts, wherein one part is added with 0.1 mass parts of platinum catalyst per 100 mass parts of base material as component A, and the other part is added with 3.0 mass parts of hydrogen-containing polysiloxane per 100 mass parts of base material as Component B, the hydrogen-containing polysiloxane used has a viscosity of 100CS and a hydrogen content of 0.5% (mass fraction);

[0040] S2: Add component A and component B to the reactor with...

Embodiment 3

[0044] A kind of foamed silicon rubber material, the preparation method of described foamed silicon rubber material is as follows:

[0045] S1: Add 100 parts by mass of polysiloxane with vinyl group and 30 parts by mass of reinforcing filler into the kneader in batches, mix and stir evenly to make the base material, wherein the vinyl content of polysiloxane with vinyl group is 0.26% (mass fraction), the viscosity is 7000CS, and the specific surface area of ​​the reinforcing filler is 380m 2 / g of hydrophobic silica. Divide the base material into two parts, wherein one part is added with 0.1 mass parts of platinum catalyst per 100 mass parts of base material as component A, and the other part is added with 3.0 mass parts of hydrogen-containing polysiloxane per 100 mass parts of base material as Component B, the hydrogen-containing polysiloxane used has a viscosity of 100CS and a hydrogen content of 0.8% (mass fraction);

[0046] S2: Add component A and component B into the re...

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Abstract

The invention relates to a foamed silicone rubber material, and a preparation method and applications thereof. The preparation method comprises following steps: 1, a basic material is prepared from polysiloxane containing vinyl and a reinforcing filling material, the basic material is divided into two parts, a platinum catalyst is added into one part so as to obtain a component, and hydrogen-containing polysiloxane is added into the other part so as to obtain a component B; 2, the component A and the component B are introduced into two reaction kettles provided with stirring devices, homogenizing devices, and jacket oil heating devices respectively, a compressed gas is introduced into each reaction kettle until the pressure in the reaction kettle ranges from 0.2 to 5.0MPa, the pressure ineach reaction kettle is maintained to be constant, stirring and homogenizing are carried out so as to mix two reaction systems with a large amount of fine uniform high pressure bubbles; 3, the pressure is maintained to be constant, stirring and homogenizing are stopped, materials obtained in the two reaction kettles are mixed at a certain ratio, an obtained mixture is injected into a mould for injection moulding, or is injected into a continuous sulfuration baking channel for preparation of section bars and coiled materials. The foamed silicone rubber material possesses excellent foaming uniformity, foaming shape, and flexibility, and the size is controllable.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to a foamed silicone rubber material and its preparation method and application. Background technique [0002] Foamed silicone rubber material is a low-density, high heat-resistant soft foam material that combines the properties of polyorganosiloxane and foam materials. It usually has high softness, high ductility, high elasticity, and good The physical characteristics of absorbing mechanical vibration and shock, etc., can be used continuously at 315°C. At the same time, the foamed silicone rubber material has good flame retardant properties, and even the silicon dioxide produced by combustion has good heat insulation and insulation properties, and is non-toxic. Due to the special structure of polyorganosiloxane, it has many excellent properties that other materials cannot have at the same time, such as excellent high and low temperature resistance, excellent electrical in...

Claims

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Application Information

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IPC IPC(8): C08J9/30C08J9/12C08L83/07C08L83/05C08K3/36
CPCC08J9/0061C08J9/0066C08J9/122C08J9/30C08J2203/06C08J2383/04C08J2483/04
Inventor 黄振宏陆文灿林清标李亚艺
Owner GUANGDONG BIOMAX SIANDF NEW MATERIAL CO LTD