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Nylon flame retardant composite material and preparation method thereof

A technology of flame-retardant composite materials and nylon, which is applied in the field of flame-retardant polyester composite materials, nylon flame-retardant composite materials and their preparation, can solve problems such as easy volatilization, low decomposition temperature, and failure to meet high-temperature nylon processing requirements, and achieve Good flame retardancy, high mechanical strength and good dimensional stability

Active Publication Date: 2022-04-08
HONGHU YITAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the decomposition temperature of some small molecule organophosphorus flame retardants is low, which cannot meet the processing requirements of high-temperature nylon and is volatile

Method used

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  • Nylon flame retardant composite material and preparation method thereof
  • Nylon flame retardant composite material and preparation method thereof
  • Nylon flame retardant composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment discloses the preparation of polyphosphonate flame retardant:

[0035] Add 26.04g phosphate methyl diphenyl ester and 31.8g phenolphthalein in the four-neck flask that electromechanical stirrer and vacuum distillation device are housed, then add 0.32g catalyst sodium metaaluminate (catalyst quality is 1% of phenolphthalein quality ), feed nitrogen under stirring, react at 140°C for 1 hour, and react at 180°C for 3 hours. During the reaction, the small molecule phenol produced is separated, and then the reaction is continued for 4 hours under reduced pressure.

[0036] After the reaction, crush the solid crude product obtained after the reaction, fully stir it in hot water at 60°C for 3 hours, then filter it while it is hot, collect the filter cake, and dry it in a vacuum oven at 50°C for 12 hours to obtain a solid product polyphosphonate.

[0037] Concrete synthetic route is as follows:

[0038]

[0039] Wherein, the structural characterization of t...

Embodiment 2

[0043] This embodiment discloses a method for preparing a high-temperature nylon flame-retardant composite material, which includes the following steps:

[0044] (1) Get the polyphosphonate flame retardant 10g that above-mentioned embodiment 1 makes, 0.5g antioxidant and 89.5g nylon 10T resin resin and carry out thorough mixing, obtain mixed base material, then place co-rotating twin-screw extruder In the machine, pellets are processed and granulated, wherein the temperature range of the twin-screw extruder is 300-350° C., and the rotation speed is 160-220 r / min.

[0045] (2) Take the pellets of step (1) and carry out molding processing in an injection molding machine to obtain a composite material, wherein the temperature of the injection molding machine is 300-350°C.

Embodiment 3

[0047] The difference between this embodiment and the above-mentioned embodiment 2 is that the addition amount of the polyphosphonate flame retardant is 15 g, the nylon 10T resin is 84.5 g, and the others remain the same.

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Abstract

The invention discloses a nylon flame-retardant composite material and a preparation method thereof, belonging to the technical field of polymer composite materials. It includes the following raw material components in mass percentage: 59-94.5% of nylon 10T resin; 5-40% of polyphosphonate flame retardant; 0.5-1% of antioxidant; among them, polyphosphonate flame retardant It has the following structural formula: and in the above structural formula, n is a positive integer of 21-50. The high-temperature nylon flame-retardant composite material designed and obtained by the invention has high mechanical strength, good dimensional stability and good flame-retardant effect.

Description

technical field [0001] The invention relates to a flame-retardant polyester composite material, which belongs to the technical field of polymer composite materials, in particular to a nylon flame-retardant composite material and a preparation method thereof. Background technique [0002] Semi-aromatic high-temperature nylon (PA) has many advantages such as high melting point, low water absorption and good dimensional stability, and is widely used in electronic appliances and many related fields. The main varieties of high temperature nylon are PA4T, PA6T, PA9T, PA10T and so on. When electronic and electrical products work, they will be accompanied by high temperature and high pressure and short circuit, which will easily cause plastic components and cause fire. Therefore, materials that can be widely used in electronic appliances must be subjected to corresponding flame retardant treatment, and the current flame retardants that can meet the processing temperature of high-te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L85/02
CPCC08L77/06C08L2201/02C08L85/02
Inventor 刘学清刘继延邹立勇成贞辉方玮沈道胜
Owner HONGHU YITAI TECH CO LTD
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