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Preparation method of organophosphine silicon polymer and aluminum hydroxide synergistic flame retardant silicone rubber

A technology of aluminum hydroxide and synergistic flame retardant, which is applied in the field of silicone rubber, can solve the problems of deteriorating mechanical properties and processing properties of silicone rubber, and large demand, and achieve the effects of less addition, high flame retardant efficiency, and simple preparation

Active Publication Date: 2021-05-04
HUBEI XINGFA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum hydroxide (Al(OH) 3 ) itself has the functions of flame retardant, smoke elimination and filling. It is known as a pollution-free inorganic flame retardant because it is non-volatile and non-toxic. However, to make silicone rubber achieve better flame retardant performance, a large amount is required. Seriously deteriorate the mechanical properties and processing properties of silicone rubber
Aluminum hydroxide is used in combination with other flame retardants to achieve a synergistic flame retardant effect, but at present, it is mainly used in combination with inorganic flame retardants such as zinc borate and magnesium hydroxide to obtain better results. Combination of alumina and organic polymers for synergistic flame retardancy

Method used

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  • Preparation method of organophosphine silicon polymer and aluminum hydroxide synergistic flame retardant silicone rubber
  • Preparation method of organophosphine silicon polymer and aluminum hydroxide synergistic flame retardant silicone rubber
  • Preparation method of organophosphine silicon polymer and aluminum hydroxide synergistic flame retardant silicone rubber

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Table 3 flame retardant silicone rubber formula

[0045]

[0046] Described phosphorus-containing flame retardant is organic phosphine silicon polymer, polyphosphonate siloxane (DOPO-Si), and its structure is as follows:

[0047]

[0048] In the formula: x is 2, y is 6, and z is 310.

Embodiment 2

[0050] Table 4 flame retardant silicone rubber formula

[0051]

[0052]

[0053] Described phosphorus-containing flame retardant is organic phosphine silicon polymer, polyphosphonate siloxane (DOPO-Si), and its structure is as follows:

[0054]

[0055] In the formula: x is 3, y is 4, and z is 300.

Embodiment 3

[0057] Table 5 flame retardant silicone rubber formula

[0058]

[0059] Described phosphorus-containing flame retardant is organic phosphine silicon polymer, polyphosphonate siloxane (DOPO-Si), and its structure is as follows:

[0060]

[0061] In the formula: x is 4, y is 6, and z is 320.

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Abstract

A preparation of organophosphine-silicon polymer and aluminum hydroxide synergistic flame-retardant silicone rubber, relating to the technical field of silicone rubber, is characterized in that the following raw materials are used in parts by weight: base rubber I 17%-23%, base rubber II 43%-57 %, organophosphine silicon polymer 20‑10%, aluminum hydroxide 20‑10%. The invention has simple components and is convenient to prepare. By adding organophosphine-silicon polymer and aluminum hydroxide, synergistically flame-retardant, the prepared silicone rubber is resistant to high temperature, odorless and has good flame-retardant performance.

Description

technical field [0001] The invention relates to the technical field of silicone rubber, in particular to the preparation of an organophosphine-silicon polymer and aluminum hydroxide synergistically flame-retardant silicone rubber. Background technique [0002] Silicone rubber is a kind of special synthetic rubber with siloxane as the main chain and other organic groups as side chains. The structure of siloxane as the main chain makes silicone rubber have the dual characteristics of inorganic and organic polymers. It has excellent properties such as wide temperature resistance, high pressure resistance, ozone aging resistance, weather resistance, and physiological inertness. It has been widely used in various fields of the national economy. a wide range of applications. However, silicone rubber itself is flammable and will continue to burn when it encounters an open flame, which limits its application in electronic appliances, wires and cables, automobiles, aerospace and oth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/06C08L83/08C08L83/04C08K3/22C08K3/36
CPCC08K2003/2227C08L83/04C08L2201/02C08L2201/08C08L2203/202C08L2205/025C08L2205/035C08L83/06C08L83/08C08K3/22C08K3/36
Inventor 马会娟杨桂春陈海平张旺熊成雪
Owner HUBEI XINGFA CHEM GRP CO LTD