Unlock instant, AI-driven research and patent intelligence for your innovation.

Intrinsic flame-retardant silicone rubber foam material, preparation method thereof and application

A foam material and intrinsic flame retardant technology, which is applied in the field of polymer material processing, can solve problems such as mechanical property degradation, damage to the structure of cells, and influence on material density, and achieve high foaming ratio, reduced density, and foaming The effect of easy process

Active Publication Date: 2017-09-08
冉聚(上海)高新材料有限公司
View PDF9 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when adding a flame retardant to improve the flame retardancy of a material, it is often necessary to add a large amount of flame retardant fillers in order to achieve the required flame retardant effect, which not only affects the density of the material, but also destroys the structure of its cells , leading to a decrease in mechanical properties

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Intrinsic flame-retardant silicone rubber foam material, preparation method thereof and application
  • Intrinsic flame-retardant silicone rubber foam material, preparation method thereof and application
  • Intrinsic flame-retardant silicone rubber foam material, preparation method thereof and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Bromination modification of low viscosity silicone oil: in 0.08g Ca[V(HIDPA) 2 ] Under catalysis, add 20g water and 20g NCMe to form a two-phase system, and add 20g KBr and 14g H at the same time 2 O 2 , 253g of nitric acid, react at 20°C for 6 hours, bromination of 40g of low viscosity silicone oil.

[0046] After the bromination is completed, the NCMe is separated by distillation, and then the modified silicone oil and water are separated, and then liquid separation is performed to obtain the modified low-viscosity silicone oil. The following examples are also treated in the same way.

[0047] (2) Bromination modification of high viscosity silicone oil: at 0.12gCa[V(HIDPA) 2 ] Under catalysis, add 30g water and 30g NCMe to form a two-phase system, and add 30g KBr and 21g H 2 O 2 , 379g of nitric acid, react at 20°C for 6 hours, bromination of 60g of high viscosity silicone oil.

[0048] (3) First add 4 g of azodicarbonamide as a foaming agent in the container, and then ad...

Embodiment 2

[0057] (1) Bromination modification of low viscosity silicone oil: in 0.1gCa[V(HIDPA) 2 ] Under catalysis, add 25g water and 25gNCMe to form a two-phase system, and add 25gKBr and 17.5gH at the same time 2 O 2 , 361g of nitric acid, react at 20°C for 6 hours, bromination of 50g of low viscosity silicone oil.

[0058] (2) Bromination modification of high viscosity silicone oil: in 0.1gCa[V(HIDPA) 2 ] Under catalysis, add 25g water and 25gNCMe to form a two-phase system, and add 25gKBr and 17.5gH at the same time 2 O 2 361g nitric acid, react at 20℃ for 6 hours, to 50g high viscosity silicone oil.

[0059] (3) First add 4g of azobisisobutyronitrile as a foaming agent in the container, and then add the modified silicone oil above. Start by slowly stirring until the foaming agent is completely dispersed in the silicone oil (room temperature, about 100r / min, stirring for 5 minutes). Then, the rotation speed is increased to about 400r / min, and 13 g of white carbon black is slowly added w...

Embodiment 3

[0062] (1) Bromination modification of low viscosity silicone oil: at 0.12gCa[V(HIDPA) 2 ] Under catalysis, add 30g water and 30g NCMe to form a two-phase system, and add 30g KBr and 21g H 2 O 2 , 379g of nitric acid, react at 20°C for 6 hours, bromination of 60g of low viscosity silicone oil.

[0063] (2) Bromination modification of high viscosity silicone oil: in 0.08g Ca[V(HIDPA) 2 ] Under catalysis, add 20g water and 20g NCMe to form a two-phase system, and add 20g KBr and 14g H 2 O 2 , 253g nitric acid, react at 20°C for 6 hours, bromination 40g high viscosity silicone oil.

[0064] (3) First add 5 g of hydrogen-containing silicone oil in the container, and then add the modified silicone oil above. Start by slowly stirring until the foaming agent is completely dispersed in the silicone oil (room temperature, about 100r / min, stirring for 5 minutes). Then, the rotation speed is increased to about 400r / min, and 10 g of white carbon black is slowly added while stirring (the proces...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an intrinsic flame-retardant silicone rubber foam material, a preparation method thereof and an application. The silicone rubber foam material is prepared from brominated modified silicone oil, foaming agents, reinforcing agents, catalysts and cross-linking agents. The preparation method includes the steps: (1) brominating and modifying silicone oil by a silicone oil modification system to prepare the brominated modified silicone oil; (2) performing mixed reaction on the brominated modified silicone oil, the foaming agents, the reinforcing agents, the catalysts and the cross-linking agents to prepare the silicone rubber foam material. The preparation method is simple in process, the material has flame resistance by the aid of halogen elements in the modified silicone oil, addition of fire retardants is omitted, the silicone rubber foam material is prepared by heat treatment foaming technique, the foaming process is easily controlled, and the prepared material is high in foaming ratio and strength, good in elasticity and excellent in flame resistance.

Description

Technical field [0001] The invention relates to a preparation method of a silicone rubber foam material, in particular to a preparation method of a silicone rubber foam material with high flame retardancy, in particular to an intrinsic flame-retardant silicone rubber foam material and a preparation method and application thereof. Molecular material processing field. Background technique [0002] Silicone rubber belongs to a kind of semi-organic and semi-inorganic polymer. Its main chain is composed of alternately connected silicon-oxygen bonds, with organic groups on the side chains. Silicone rubber foam material is a porous material obtained by foaming silicone rubber. It not only has the characteristics of sound insulation, heat insulation, high elasticity, and low density of ordinary organic foam materials, but also has the advantages of silicone rubber. Its high and low temperature resistance, radiation resistance and chemical stability are also very excellent, so it is wide...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K3/36C08K5/5415C08K5/57C08J9/10C08J9/08C08G77/385
CPCC08G77/385C08J9/08C08J9/102C08J9/103C08J2383/04C08L83/04C08L2201/02C08L2203/14C08L2205/025C08K3/36C08K5/5415C08K5/57
Inventor 邹威冯雪亮杜中杰张晨励杭泉
Owner 冉聚(上海)高新材料有限公司