Phosphorus-silicon composite flame retardant as well as preparation method and application thereof

A technology of compounding flame retardant and phospho-silicon is applied in the field of flame retardant materials, which can solve the problems of low thermal stability, limited application range, foam generation, etc., and achieves improved processing performance, low preparation and application costs, and prevention of melting droplets. Effect

CN104448830AActive Publication Date: 2015-03-25SHANGHAI UNIV OF ENG SCI

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: SHANGHAI UNIV OF ENG SCI
Publication Date: 2015-03-25

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Abstract

The invention discloses a phosphorus-silicon composite flame retardant as well as a preparation method and application thereof. The phosphorus-silicon composite flame retardant is a cage-like tetraphenyl trisilicate phosphorus silsesquioxane shown in the description, and the flame retardant is prepared according to the following steps: firstly hydrolyzing POSS to chipping POSS under the action of an organic alkali, and then carrying out reaction of the chipping POSS with metaphosphoric acid. Experiments show that the phosphorus-silicon composite flame retardant provided by the invention gives full play to the advantages of a silicon flame retardant and a phosphorus flame retardant, compensates defects of the silicon flame retardant and the phosphorus flame retardant, has significant synergistic flame retardance and complementarity, and excellent thermal insulation, smoke suppression and oxygen supply cutoff functions, also has the functions of protecting the environment, safety and preventing molten drop, can be directly used for preparing silicone rubber, can not only improve the flame retardance of the silicone rubber, but also perfect the thermal insulation, smoke suppression and mechanical properties of the silicone rubber, and the phosphorus-silicon composite flame retardant has the advantages of being low in preparation and application costs, easy to realize large-scale industrialized production, and the like.

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Description

technical field

[0001] The invention relates to a phosphorus-silicon composite flame retardant and its preparation method and application, belonging to the technical field of flame-retardant materials. Background technique

[0002] At present, in the field of flame retardants for polymer materials, halogenated flame retardants are widely used. Although the flame retardant effect of this type of flame retardants is very good, due to the release of hydrogen halide gas and non-degradability when halogens burn, the current Use has been restricted.

[0003] As a rising star in the flame retardant family, silicon-based flame retardants began in the early 1980s. It not only has excellent flame retardant properties such as high efficiency, low toxicity, smoke suppression, and promotion of char formation, but also has significantly improved processing performance and mechanical properties compared with traditional flame retardants, and is well received by the public. favored by man...

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

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