A kind of p-n series expansion reaction flame retardant and preparation method thereof

An expansion reaction, P-N technology, applied in the chemical field, can solve problems such as large amount of addition, smoke, and environmental pollution
CN104072759BInactive Publication Date: 2016-08-24NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Publication Date
2016-08-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a P-N series expansion reaction type flame retardant p-(carboxyphenyl-amino)-(carboxyphenyl-amidoethyl)phenylphosphine oxide and its preparation method: (a) p-aminobenzoic acid solution In glacial acetic acid; (b) Add triethylamine and the mixed solution obtained in step a to the 2-carboxyethylphenylphosphinic acid solution, stir and react at high speed for 2 hours, heat up to 80°C, react for 4 hours, then cool and hydrolyze , suction filtration, water washing and drying, the white powder obtained is the P-N series expansion reaction flame retardant; the present invention overcomes the disadvantages of general flame retardants such as producing harmful gas, polluting the environment, emitting smoke, and affecting mechanical properties, etc. The terminal group bonds the effective flame retardant ingredients to the main chain of PA66, which plays the role of essential flame retardancy, and has the advantages of harmlessness, smoke suppression, high efficiency, and environmental protection.
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Description

technical field

[0001] The invention belongs to the field of chemistry, in particular to a P-N series expansion reaction flame retardant and a preparation method thereof. Background technique

[0002] With the advancement of science and technology, polymer materials such as synthetic fibers, rubber, and plastics are increasingly used in various fields, especially engineering plastics play a more important role in the national economy and people's lives. However, engineering plastics belong to Flammable or combustible polymer materials are prone to fire and other accidents. In order to solve the problems of engineering plastics such as heat resistance and smoke suppression, the most effective method is to introduce flame retardants to convert flammable or combustible polymer materials into flame-retardant or Non-combustible materials, reduce the burning rate, delay the spread of flames, and control the occurrence of fires. According to the application method of flame retarda...

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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