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Organic montmorillonite/halogen-free diphosphonate fire retardation PA6T/6 composite material and preparation method thereof

A technology of organic montmorillonite and halogen-free bisphosphonic acid, applied in the field of organic montmorillonite/halogen-free bisphosphonate flame-retardant PA6T/6 composite materials and its preparation, can solve the problem of reducing the physical properties of PA6T/6, Poor flame retardant effect of flame retardants, great environmental and human hazards, etc., to achieve good synergistic flame retardant effect, long-term flame retardant effect, and the effect of maintaining mechanical properties

Inactive Publication Date: 2015-02-25
JUNMA TIRE CORD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that traditional flame retardants are harmful to the environment and human body when used, and the flame retardant effect of a single flame retardant is poor; the amount of flame retardants is large (30%~65%), and the physical properties of PA6T / 6 are reduced. Technical difficulties, providing a simple and easy-to-control organic montmorillonite (OMMT) / halogen-free bisphosphonate flame-retardant PA6T / 6 composite material and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0027] Add 40g of purified terephthalic acid, 30g of propylenediamine and 75g of deionized water into the reactor, raise the temperature of the system to 90°C, stir thoroughly for 0.5 hours, adjust the pH of the solution at 7.5, add 30g of caprolactam, and mix evenly for 2 hours. Close the reactor and increase the reaction temperature to 280°C, keep the system pressure at 1.5MPa, keep the pressure for 2 hours, discharge the gas within 0.5 hours, and evacuate to 0.09MPa, keep it for 0.5 hours, cool down and discharge the material, the solid is crushed and deionized After washing with water and drying, put it into a reaction extruder, and extrude it at a temperature of 280°C and a vacuum of 0.09MPa for 10 minutes to obtain a PA6T / 6 resin. Mix 50g of PA6T / 6 resin, tetramethyl 1,2-ethylene bisphosphonate 12g and 3g of organic montmorillonite (OMMT) were added into the reactor and stirred, mixed evenly, sent to a twin-screw extruder, and reacted and extruded at a temperature of 280°...

Embodiment 2）

[0029] Add 600g of undecanedibasic acid, 450g of hexamethylenediamine and 1125g of deionized water into the reactor, raise the temperature of the system to 90°C, stir thoroughly for 1 hour, adjust the pH of the solution to 7.3, add 450g of caprolactam, and mix evenly for 2.5 hours , close the reactor, increase the reaction temperature to 290°C, keep the system pressure at 1.8MPa, hold the pressure for 2 hours, discharge the gas within 0.5 hours, and evacuate to 0.09MPa, keep it for 0.5 hours, cool down and discharge the material, the solid is crushed, removed After washing with ionic water and drying, add it to a reactive extruder, and react and extrude at a temperature of 290°C and a vacuum of 0.08MPa for 10 minutes to obtain PA6T / 6 resin. PA6T / 6 resin 200g, tetramethyl methylene bisphosphonate 50g and organic Add 15g of montmorillonite (OMMT) into the reactor, stir and mix evenly, send it into a twin-screw extruder, react and extrude at a temperature of 290°C and a vacuum of ...

Embodiment 3）

[0031]Add 360g of adipic acid, 270g of p-phenylenediamine and 680g of deionized water into the reactor, raise the temperature of the system to 90°C, stir thoroughly for 0.5 hours, adjust the pH of the solution at 7.2, add 270g of caprolactam, mix evenly for 1.5 hours, and seal The reactor raises the reaction temperature to 300°C, keeps the system pressure at 2.0MPa, keeps the pressure for 3.5 hours, discharges the gas within 0.5 hours, and evacuates to 0.08MPa, keeps it for 0.5 hours, cools down and discharges the material, the solid is crushed, deionized water After washing and drying, put it into a reactive extruder, and extrude it at a temperature of 300°C and a vacuum of 0.08MPa for 10 minutes to obtain a PA6T / 6 resin. Mix 300g of PA6T / 6 resin, 80g of tetraethyl 1,2-ethylene bisphosphonate Add 20g of organic montmorillonite (OMMT) into the reactor, stir, mix evenly, send it into a twin-screw extruder, react and extrude at a temperature of 300°C and a vacuum of 0.08MPa for 2...

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Abstract

The present invention relates to a semi-aromatic PA6T / 6 composite material, particularly to an organic montmorillonite (OMMT) / halogen-free diphosphonate fire retardation PA6T / 6 composite material and a preparation method thereof. The organic montmorillonite (OMMT) / halogen-free diphosphonate fire retardation PA6T / 6 composite material comprises, by mass, 20-200 parts of a PA6T / 6 resin, 5-50 parts of a halogen-free diphosphonate fire retardation agent, and 1-10 parts of organic montmorillonite. The fire retardation composite material of the present invention has characteristics of high fire retardation efficiency, halogen-free fire retardation, green environmental protection, low harm on human health, low environment pollution, high fire retardation grade, and significant effect.

Description

technical field [0001] The invention relates to a semi-aromatic PA6T / 6 composite material, in particular to an organic montmorillonite (OMMT) / halogen-free bisphosphonate flame-retardant PA6T / 6 composite material and a preparation method thereof. Background technique [0002] Semi-aromatic polyamide 6T / 6 is a high heat-resistant resin between general-purpose engineering plastic nylon and high-temperature-resistant engineering plastic PEEK. It has excellent heat resistance, excellent heat aging resistance, and little dependence of mechanical properties on temperature; High fatigue strength; resistance to aliphatic hydrocarbons, aromatic chlorinated hydrocarbons, esters, ketones, alcohols and other organic bath agents and various fuels, oils, antifreeze and other chemicals used in vehicles; water absorption or moisture absorption rate is small, and After moisture absorption, the product size and mechanical properties change little; the rigidity and strength are superior to gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/02C08K5/5333C08K9/00C08K3/34C08G69/28C08G69/16
CPCC08L77/06C08G69/36C08L77/02C08L2201/02C08L2201/22
Inventor 顾晓华坎伟涛支敏飞方乃照吴奎王洪斌薛芳峰韩冰
Owner JUNMA TIRE CORD
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