A kind of intumescent flame retardant and preparation method thereof

An intumescent flame retardant and catalyst technology, applied in the field of flame retardants and their preparation, can solve the problems of limited quantity, poor polymer compatibility, inability to effectively overcome heat resistance, etc., and achieves short synthesis cycle and raw material source. Rich and good interface binding effect
CN103073725BActive Publication Date: 2015-08-19苏州沃尔兴电子科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
苏州沃尔兴电子科技有限公司
Publication Date
2015-08-19

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Abstract

The invention discloses swelling flame retardant and a preparation method thereof. Under the protection of nitrogen, hyperbranched polysiloxane containing amino groups is dissolved in acetone, and catalyst pyridine or triethylamine is added into the mixture to obtain the solution; and dichloropentate is dissolved in acetonitrile to be gradually added into the solution, and after the reaction is ended, the swelling flame retardant can be obtained through a washing step and a filtering step. The swelling flame retardant adopts the hyperbranched polysiloxane containing a great amount of nitrogen elements as a gas source, the group on the end of the hyperbranched polysiloxane of a spherical structure is combined with the dichloropentate of bifunctional end to end to form a large molecular body (netted) structure, and a great amount of active groups can be achieved; and the welling flame retardant has thermal oxygen stability and flame resistance and has application prospect on the aspects such as research and development of novel flame retardant materials, modification and high performance orientation of polymers and multiple functional groups. The preparation method is simple in process, the synthesis period is short, the yield is high, the source of raw materials is wide, and the applicability is wide.
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Description

technical field

[0001] The invention relates to a flame retardant and a preparation method thereof, in particular to an intumescent flame retardant and a preparation method thereof. Background technique

[0002] In recent years, intumescent flame retardants have been widely used in the research and development of flame-retardant polymer materials due to their outstanding advantages such as high flame-retardant efficiency, halogen-free, less smoke, and environmental friendliness. Intumescent flame retardants usually contain three parts: acid source, carbon source and gas source. When heated, the carbon source is dehydrated under the catalysis of the acid source to form an isolated stable carbon layer; the incombustible gas generated by the decomposition of the gas source foams, thereby forming a honeycomb-shaped expanded carbon layer between the fire source and the polymer. to the role of flame retardancy.

[0003] Traditional intumescent flame retardants are mainly mixed t...

Claims

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