Composition for preparing flame-retardant liquid silica gel foam and flame-retardant liquid silica gel foam

A technology of liquid silica gel and composition, which is applied in the field of foaming materials, can solve the problems of low foaming ratio, uneven cells, too late colloid, etc., and achieve the effect of uniform cells, high reaction rate, and easy control

Inactive Publication Date: 2020-04-07
苏州然创新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current foaming method decomposes too fast, and the colloid has no time to vulcanize and capture the gas generated by the foaming agent, resulting in low foaming ratio and uneven cells

Method used

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  • Composition for preparing flame-retardant liquid silica gel foam and flame-retardant liquid silica gel foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A flame-retardant liquid silicone foam of the present invention is prepared from the following composition, which consists of material A and material B with a mass ratio of 1:1.

[0035] Among them, in terms of mass, material A includes 65 parts of the first hydroxy vinyl siloxane, 30 parts of the first reinforcing agent, 5 parts of vinyl silicone resin and 0.25 parts of platinum complex.

[0036] The viscosity of the first hydroxy vinyl siloxane is 2500-5000cps, the hydroxyl content: 0.5%-0.8%, and the vinyl content: 0.12-0.32%.

[0037] The first reinforcing agent is a mixture of 180 mesh precipitated silica and 200 mesh meteorological silica.

[0038] Vinyl silicone resin is methyl vinyl resin, its vinyl content: 1.8%-2%, viscosity 1500-2000cps.

[0039] In terms of mass, material B includes 37 parts of second hydroxy vinyl siloxane, 10 parts of second reinforcing agent, 30 parts of hydrogen-containing silicone oil, 15 parts of flame retardant, 18 parts of hydroxy s...

Embodiment 2

[0052] A flame-retardant liquid silicone foam of the present invention is prepared from the following composition, which consists of material A and material B with a mass ratio of 1:1.

[0053] Wherein, in terms of mass, material A includes 20 parts of the first hydroxy vinyl siloxane, 2 parts of the first reinforcing agent, 2 parts of vinyl silicone resin and 0.05 parts of platinum complex.

[0054] In terms of mass, material B includes 23 parts of second hydroxy vinyl siloxane, 5 parts of second reinforcing agent, 1 part of hydrogen-containing silicone oil, 5 parts of flame retardant, 2 parts of hydroxy silicone oil, and 0.01 part of retarder.

[0055] The selection of each component in A material and B material is identical with embodiment 1.

Embodiment 3

[0057] A flame-retardant liquid silicone foam of the present invention is prepared from the following composition, which consists of material A and material B with a mass ratio of 1:1.

[0058] Among them, in terms of mass, material A includes 35 parts of the first hydroxy vinyl siloxane, 10 parts of the first reinforcing agent, 5 parts of vinyl silicone resin and 1 part of platinum complex.

[0059] In terms of mass, material B includes 50 parts of second hydroxy vinyl siloxane, 15 parts of second reinforcing agent, 20 parts of hydrogen-containing silicone oil, 15 parts of flame retardant, 10 parts of hydroxy silicone oil, and 0.5 parts of retarder.

[0060] The selection of each component in A material and B material is identical with embodiment 1.

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Abstract

The invention relates to a composition for preparing flame-retardant liquid silica gel foam. The flame-retardant liquid silica gel foam is characterized by comprising a material A and a material B ata mass ratio of 1: 1; wherein the material A comprises a first hydroxyl vinyl siloxane, a first reinforcing agent, ethylene-silicon resin and a platinum complex; and the material B comprises a secondhydroxyl vinyl siloxane, a second reinforcing agent, hydrogen-containing silicone oil, a flame retardant, hydroxyl silicone oil and a retarder. The composition for preparing the flame-retardant liquidsilica gel foam is easy to control in the foaming process, good in stability and high in reaction rate, the flame-retardant liquid silica gel foam prepared from the composition is uniform in foam holes and has excellent elasticity, and the permanent deformation rate is within 1%.

Description

technical field [0001] The invention relates to the field of foaming materials, in particular to a composition for preparing flame-retardant liquid silica gel foam and the flame-retardant liquid silica gel foam. Background technique [0002] At present, silica gel foam is prepared by solid silicone rubber plus foaming agent and liquid silica gel plus foaming agent in the market. Usually, silica gel foam is made of chemical foaming as the main body, using organic nitrogen compounds as foaming agents, and heating, foaming and vulcanizing through metal catalysts. However, the current foaming method decomposes too fast, and the colloid has no time to vulcanize and capture the gas generated by the foaming agent, resulting in a low foaming ratio and uneven cells. Contents of the invention [0003] In order to solve the matching problem of vulcanization rate and foaming rate of silicone foam in the prior art, the object of the present invention is to provide a composition for pr...

Claims

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Application Information

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IPC IPC(8): C08L83/05C08L83/07C08K13/02C08K3/22C08K3/34C08K5/5425C08K7/26C08J9/12
CPCC08J9/0066C08J9/0071C08J9/0095C08J9/122C08J2203/06C08J2383/05C08J2483/07
Inventor 王加兵赵彦余杜祥王向峰俞魏朱方明
Owner 苏州然创新材料科技有限公司
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