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A two-component ultra-low density fireproof silicone foam material and its preparation process

An ultra-low density, silicone foam technology, applied in the field of polymer fireproof materials, can solve the problems of difficult to prepare foamed silicone rubber with complex shapes, high production conditions, complicated operation methods, etc., and achieves easy construction and replacement, The effect of convenient construction and simple preparation process

Active Publication Date: 2016-06-08
HAILONG EMERSON ZHENJIANG ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of preparing silicone rubber foam material is to mix the foaming agent, crosslinking agent, silicone rubber and other additives and fillers in a mixer, and then release the sheet, and then place it under a certain temperature for pore forming and crosslinking. It is prepared by reaction; but this method is not easy to prepare foamed silicone rubber with complex shapes, and its operation method is relatively complicated and the required production conditions are relatively high.

Method used

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  • A two-component ultra-low density fireproof silicone foam material and its preparation process
  • A two-component ultra-low density fireproof silicone foam material and its preparation process
  • A two-component ultra-low density fireproof silicone foam material and its preparation process

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Each component in this embodiment is measured in parts by mass.

[0034] First, add 50 parts of 1000mPa vinyl-terminated polydimethylsiloxane and 13 parts of 15000mPa dihydroxyl-terminated polydimethylsiloxane into a multifunctional dispersing mixer for mixing. Mixing temperature: 30°C, mixing time : 75min; then add 15 parts of 1500 mesh fumed silica, 10 parts of 1500 mesh wollastonite powder, 6 parts of 1000 mesh aluminum hydroxide, 5 parts of 1000 mesh magnesium hydroxide and stir and mix, mixing time: 45min; then add 0.5 parts of Pt Catalyst, 0.5 parts of carbon black powder were stirred and dispersed, stirring time: 45min; after that, vacuum degassed, time: 90min, to obtain A component;

[0035] Next, add 55 parts of 5000mPa vinyl-terminated polydimethylsiloxane, 26 parts of hydrogen-containing silicone oil (hydrogen content 1.5%), 0.9 part of ethylene glycol, and 0.1 part of glycerol into the multifunctional dispersion mixer Mixing, mixing temperature 30°C, mixing...

Embodiment 2

[0038] Each component in this embodiment is measured in parts by mass.

[0039] First, add 45 parts of 2000mPa vinyl-terminated polydimethylsiloxane and 15 parts of 12000mPa dihydroxyl-terminated polydimethylsiloxane into a multifunctional dispersing mixer and mix them. Mixing temperature: 40°C, mixing time : 80min; then add 5 parts of 600 mesh aluminum hydroxide, 5 parts of 600 mesh zinc carbonate, 29 parts of 500 mesh light calcium carbonate and stir and mix, mixing time: 35min; then add 0.1 part of Pt catalyst, 0.5 part of colloidal graphite powder, 0.4 Part of iron oxide black powder was stirred and dispersed, stirring time: 40min; then vacuum degassed, time: 80min, to obtain A component;

[0040] Next, add 45 parts of 4000mPa vinyl-terminated polydimethylsiloxane, 28 parts of hydrogen-containing silicone oil (2% hydrogen content) and 0.5 parts of ethylene glycol into a multifunctional dispersing mixer and mix at a mixing temperature of 25°C , mixing time: 80min; then add...

Embodiment 3

[0043] Each component in this embodiment is measured in parts by mass.

[0044] First, add 65 parts of 2000mPa vinyl-terminated polydimethylsiloxane and 10 parts of 11000mPa dihydroxyl-terminated polydimethylsiloxane into a multifunctional dispersing mixer and mix them. The mixing temperature is 38°C and the mixing time is : 100min; then add 5 parts of chlorinated paraffin, 7 parts of magnesium hydroxide, 10 parts of 2500 mesh fumed silica, 5 parts of 2500 mesh silicon powder and stir and mix, mixing time: 50min; then add 0.5 parts of Pt catalyst, 1.5 parts of carbon Stir and disperse the black powder and 1 part of colloidal graphite powder, stirring time: 38min; then vacuum degassing, time: 85min, to obtain component A;

[0045] Next, add 41 parts of 1000mPa vinyl-terminated polydimethylsiloxane, 36 parts of hydrogen-containing silicone oil (2.5% hydrogen content) and 2.6 parts of ethylene glycol into a multifunctional dispersing mixer and mix at a mixing temperature of 38°C ...

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Abstract

The invention discloses a double-component fireproof silicone foamed material with ultra-low density and a preparation method thereof. The double-component fireproof silicone foamed material with ultra-low density comprises a component A and a component B and is prepared by adopting the steps of mixing the component A and the component B according to a mass ratio being 1:1, and then curing the mixture at the temperature of 10-45 DEG C to generate a foaming body, wherein the component A is prepared from vinyl terminated polydimethylsiloxane, dyhydroxyl terminated polydimethylsiloxane, a Pt catalyst, black pigment, a reinforcing filler and a flame retardant, and the component B is prepared from vinyl terminated polydimethylsiloxane, an emulsifying agent, deionized water, hydrogen containing silicon oil, a reinforcing filler and an auxiliary foaming agent. The density of the prepared fireproof silicone foamed material with ultra-low density is 0.13-0.18g / cm<3>, thus materials can be saved, and the cost is reduced. The fireproof silicone foamed material with ultra-low density has the advantages of good flame retardance, simple preparation technology and the like, does not generate poisonous gases after catching fire, and can be widely applied to blocking structures with relatively high fireproof requirements, such as mechanical pipelines, cables and the like.

Description

technical field [0001] The invention relates to a two-component ultra-low density fireproof silicone foam material and a preparation process thereof, belonging to the technical field of polymer fireproof materials. Background technique [0002] Silicone foam material is a new type of polymer flexible foam material. Silicone foam material is a semi-inorganic polymer material composed of alternating silicon-oxygen bonds to form the main chain, and silicon and organic groups to form side chains. Due to the particularity of its structure, it has many excellent properties that other materials cannot have at the same time, such as excellent high and low temperature resistance, excellent chemical stability and good aging resistance, etc. It is often used as sealing, shock absorption, sound insulation, insulation, etc. hot material. The traditional method of preparing silicone rubber foam material is to mix the foaming agent, crosslinking agent, silicone rubber and other additives ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/06C08L83/05C08K13/02C08K3/36C08K3/26C08K3/34C08K3/02
Inventor 严玉段佳巍戴金华
Owner HAILONG EMERSON ZHENJIANG ENERGY TECH
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