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Polyamide resin composition, preparation method and application thereof

A technology of polyamide resin and composition, applied in the field of polyamide resin composition and preparation thereof, can solve the problems of poor flame retardant stability, affect the mechanical properties of polyamide resin, and the wear resistance needs to be improved, and achieve good tensile strength. Effect

Inactive Publication Date: 2021-03-12
GUANGDONG GUANGSHAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyamide (polyamide, PA) is commonly known as nylon, because of its high mechanical strength, good toughness, high softening point, low friction coefficient, self-lubrication, shock absorption and noise reduction, chemical resistance, good electrical insulation, and weather resistance Good and other advantages, it is widely used in many fields such as machinery, electrical, food, medical treatment, etc., and its output ranks first among the five general-purpose engineering plastics, but polyamide resin is flammable, which greatly limits the use of polyamide resin, so the improvement of polyamide resin The flame retardant performance of polyamide resin is an urgent problem to be solved; however, the most conventional method to solve the flame retardant performance of polyamide resin in the market is through compounding, but the compounding method may affect the mechanical properties of polyamide resin itself
[0003] CN105566896A discloses a polyamide composition, including nylon-6 (PA6) or nylon-6,6 (PA66), melamine cyanurate, quartz powder and glass fiber, so that the obtained polyamide composition has better heat resistance properties and flame retardancy, but its flame retardant performance still needs to be improved, and its flame retardant stability is poor
[0005] CN105745281B discloses a flame-retardant polyamide composition, the flame-retardant polyamide composition comprising polyamide having a melting temperature higher than 265°C, and ammeline and / or ammeline, wherein the Ammeline and / or ammeline can be obtained from melamine by a biocatalytic process in an aqueous reaction mixture comprising a biocatalyst, wherein melamine is converted to ammeline and optionally further to Ammeline; however, its wear resistance needs to be improved

Method used

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  • Polyamide resin composition, preparation method and application thereof
  • Polyamide resin composition, preparation method and application thereof
  • Polyamide resin composition, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0089] A phosphorus-containing flame retardant with the following structure:

[0090]

[0091] The preparation method is as follows:

[0092]Add 1 mol of diethylenetriamine and 1 mol of dimethyl hydroxymethyl phosphite, 200 mL of ethanol, 0.1 mol of sodium hydroxide, and 0.1 g of DMAP into a three-necked flask equipped with magnetic stirring and a thermometer, heat up to ethanol reflux, and react for 12 hours. Then add hydrochloric acid until the pH is 7, filter and wash to remove impurities, and obtain the phosphorus-containing flame retardant with the above structure.

[0093] 1 H NMR (400MHz, DMSO-d6): δ=5.00-5.03(s, 2H, -N H 2 ),3.48-3.50(d,6H,-P-O-CH 3 ),3.03-3.06(s,2H,-P-C H 2 -),2.85-2.88(t,2H,-NH-CH 2 -C H 2 -NH 2 ),2.65-2.68(t,2H,-NH-C H 2 -CH 2 -NH 2 ),2.51-2.55(s,4H,-NH-C H 2 -C H 2 -NH-).

preparation example 2

[0095] A phosphorus-containing flame retardant with the following structure:

[0096]

[0097] The preparation method is as follows:

[0098] (1) Under a nitrogen atmosphere, put 200mL glacial acetic acid, 0.5mol dimethyl phosphite and 0.5mol maleic acid into a three-port 500mL glass reactor with a stirring device and stir. At a stirring temperature of 60°C, 0.5mmol The Pb catalyst was dissolved in 20mL of glacial acetic acid, then added dropwise to the reaction system, reacted for 12h, and then separated the product;

[0099] 1 H NMR (400MHz, DMSO-d6) δ = 13.52-13.54 (s, 1H, -CH-CO-O H ),12.98-13.00(s,1H,-CH 2 -CO-O H ),3.47-3.49(d,6H,-P-O-CH 3 ),2.85-2.90(t,1H,-CH-),2.78-2.81(d,2H,-C H 2 -).

[0100] (2) Mix 1 mol of the product obtained in step (1), 2 mol of thionyl chloride and 200 mL of chloroform, react at reflux temperature, then add 1 mol of ethylenediamine and 0.1 mol of triethylamine to react for 30 minutes to obtain product B;

[0101] 1 H NMR (400MHz...

preparation example 3

[0108] A phosphorus-containing flame retardant with the following structure:

[0109]

[0110] The preparation method is as follows:

[0111] (1) Under a nitrogen atmosphere, put 200mL glacial acetic acid, 0.5mol dimethyl phosphite and 0.5mol maleic acid into a three-port 500mL glass reactor with a stirring device and stir. At a stirring temperature of 60°C, 0.5mmol The Pb catalyst was dissolved in 20mL of glacial acetic acid, then added dropwise to the reaction system, reacted for 12h, and then separated the product;

[0112] 1 H NMR (400MHz, DMSO-d6) δ = 13.52-13.54 (s, 1H, -CH-CO-O H ),12.98-13.00(s,1H,-CH 2 -CO-O H ),3.47-3.49(d,6H,-P-O-C H 3 ),2.85-2.90(t,1H,-CH-),2.78-2.81(d,2H,-C H 2 -).

[0113] (2) Mix 3 mol of the product obtained in step (1), 2 mol of thionyl chloride and 600 mL of chloroform, react at reflux temperature, then add 3 mol of ethylenediamine and 0.3 mol of triethylamine to react for 0.5 h to obtain the product;

[0114] (3) 1mol of diethyl...

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Abstract

The invention discloses a polyamide resin composition, a preparation method and application thereof, wherein the polyamide resin comprises 1,4-cyclohexane dicarboxylic acid, glass fiber, styrene-isoprene copolymer, a vulcanizing agent and a phosphorus-containing flame retardant with a structure as shown in a formula I. According to the invention, the phosphorus-containing flame retardant is connected with maleic anhydride and terephthalic acid through chemical bonds, and is matched with other substances for use, so that the obtained polyamide resin composition has better tensile strength, elongation at break, air and moisture permeability and flame retardance, cannot be separated out due to migration of small molecules, cannot be dissolved in water easily, is environment-friendly and pollution-free, and does not need to consider the compatibility of the flame retardant and the base material and whether the properties of the polyamide resin are influenced when the flame retardant is added as an additive.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to a polyamide resin composition and a preparation method and application thereof. Background technique [0002] Polyamide (polyamide, PA) is commonly known as nylon, because of its high mechanical strength, good toughness, high softening point, low friction coefficient, self-lubrication, shock absorption and noise reduction, chemical resistance, good electrical insulation, and weather resistance Good and other advantages, it is widely used in many fields such as machinery, electrical, food, medical treatment, etc., and its output ranks first among the five general-purpose engineering plastics, but polyamide resin is flammable, which greatly limits the use of polyamide resin, so the improvement of polyamide resin The flame retardant performance of polyamide resin is an urgent problem to be solved; however, the most conventional method to solve the flame retardant performance of polyam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L25/10C08K7/14C08G69/42
CPCC08L77/00C08G69/42C08L2201/02C08L25/10C08K7/14
Inventor 潘庆崇
Owner GUANGDONG GUANGSHAN NEW MATERIALS CO LTD
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