A kind of permanent halogen-free flame-retardant PA10T polyamide resin and preparation method thereof

Abstract

The invention relates to the field of halogen-free environment-friendly polyamide resin, in particular to permanent halogen-free flame retardant PA10T polyamide resin and a synthesizing method thereof. The polyamide resin is a polymer formed in such a way that 1,1,3,5-tetra-anilino cyclotriphosphazene as a monomer is embedded into a PA10T polyamide macromolecular chain. A preparation method of thepolyamide resin comprises the following steps: directly adding hexamethylenediamine, terephthalic acid and the 1,1,3,5-tetra-anilino cyclotriphosphazene as reaction monomers into a high pressure reaction kettle, and embedding the 1,1,3,5-tetra-anilino cyclotriphosphazene as the monomer into the PA10T polyamide macromolecular chain by adopting a three-step method of salt formation, prepolymerization and solid phase polymerization. The modified PA10T polyamide resin does not contain halogen, so that the modified PA10T polyamide resin is more environmentally friendly and is excellent in flame retardance and higher in processability.

Description

technical field [0001] The invention relates to the field of halogen-free environment-friendly polyamide resins, in particular to a permanent halogen-free flame-retardant PA10T polyamide resin and a preparation method thereof. Background technique [0002] Polydecanediamide terephthalamide (PA10T) is a new type of semi-aromatic polyamide with good rigidity, heat resistance, dimensional stability, processing performance and low water absorption. It is widely used in electronics, electrical, automotive and other fields. It has broad application prospects. Decanediamine, the raw material of PA10T, is derived from castor oil, which meets the requirements of environmental protection and sustainable development. However, PA10T has poor flame retardancy and fails to meet the needs of various environments, which greatly limits its application development in many aspects. Therefore, it is urgent and necessary to improve the flame retardancy of PA10T. [0003] The main chain of pol...

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Problems solved by technology

[0004] In order to solve the problem that there is a gap between the flame retardant performance of PA10T and the actual demand in the prior art, the present invention uses polyphosphazene derivatives as reactive flame retardants directly bonded to the main molecular chain of PA10T to obtain a flame retardant with superior flame retardant performance. PA10T polyamide resin

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