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Organic phosphorus flame-retardant copolymer nylon composition and preparation method thereof

A technology of copolymerizing nylon and organic phosphorus, which is applied in the field of polymer flame retardant materials to achieve good anti-drip effect and controllable viscosity

Pending Publication Date: 2021-12-07
CHENGDU TALY TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the relative viscosity of the prepared polyamide material is only 0.78-0.82, and there is still a lot of room for improvement in the mechanical properties and other properties of the material samples

Method used

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  • Organic phosphorus flame-retardant copolymer nylon composition and preparation method thereof
  • Organic phosphorus flame-retardant copolymer nylon composition and preparation method thereof
  • Organic phosphorus flame-retardant copolymer nylon composition and preparation method thereof

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preparation example Construction

[0067] The preparation method of flame-retardant nylon composition of the present invention comprises:

[0068] (A) reacting organophosphorus flame retardant monomers or their derivatives with diamine monomers to make excess amino groups and prepare salt solutions;

[0069] (B) allowing the reaction product of step (A) to react with a lactam in the presence of an inorganic nanomaterial to generate a flame retardant nylon composition; or

[0070] (B') Generate organophosphorus flame-retardant copolymer nylon without the presence of inorganic nanomaterials, and then blend organophosphorus flame-retardant copolymer nylon and inorganic nanomaterials.

[0071] In step (A), preferably, the flame retardant reacts with the diamine monomer in a molar ratio of 1:0.1-20, preferably 1:0.5-10, more preferably 1:1-2.

[0072] In step (A), preferably, the diamine monomer is slightly excessive, so that the pH of the prepared salt solution is 7-9. The reaction temperature rose from room temper...

Embodiment 1

[0091] Stir and react the flame retardant monomer and hexamethylenediamine in a small amount of water at a molar ratio of 1:1.3 at 50°C for 0.5h, adjust the pH of the solution to 7.5, and dry to form a salt. Caprolactam monomer, salt obtained above (accounting for 6% of the total mass of caprolactam monomer, the same below), nano-montmorillonite accounting for 4wt% of caprolactam monomer, catalyst sodium hypophosphite each accounting for 1wt‰, antioxidant Agent p-phenylenediamine, molecular weight regulator benzoic acid, and 3% water were added to the reactor, vacuumized, nitrogen filled three times, and finally the internal pressure of the reactor was kept at 0.25MPa. Heat the reactor and keep stirring at a high speed. When the temperature of the reactor reaches 215° C. and the pressure is 1.75 MPa, keep the temperature and pressure constant for 2 hours. Then the temperature was raised to 260°C, and the pressure was released to normal pressure within 1.5 hours. Vacuumize to ...

Embodiment 2

[0094] Stir and react the flame retardant monomer and hexamethylenediamine in a small amount of water at a molar ratio of 1:1.1 at 55°C for 40 minutes, adjust the pH of the solution to 7.3, and dry to form a salt. The decanolactam monomer, the salt obtained above (accounting for 7% of the total mass of the decanolactam monomer), the nano talc accounting for 4wt%, the catalyst toluenesulfonic acid each accounting for 1‰, and the antioxidant 2 , 6-di-tert-butyl-4-methylphenol and molecular weight regulator adipic acid were added to the reactor, vacuumed and filled with nitrogen three times, and finally the pressure inside the reactor was kept at 0.2 MPa. Heat the reactor and keep stirring at a high speed. When the temperature of the reactor reaches 220° C. and the pressure is 1.9 MPa, keep the temperature and pressure constant for 2 hours. Then the temperature was raised to 270°C, and the pressure was released to normal pressure within 2 hours. Vacuumize to -0.08MPa. After the ...

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Abstract

The invention discloses an organic phosphorus flame-retardant copolymer nylon composition and a preparation method thereof. The organic phosphorus copolymerized flame-retardant polyamide composition comprises organic phosphorus copolymerized flame-retardant polyamide as shown in a formula (1) and an inorganic nano-material which accounts for 0.1-10 wt% of the organic phosphorus copolymerized flame-retardant polyamide. The organic phosphorus flame-retardant nylon composition prepared by the invention needs less reaction flame retardant, and is controllable in viscosity in a preparation process, excellent in anti-dripping effect and excellent in flame retardant property.

Description

[0001] This case is a divisional application of the patent application with application number 201610933669.5 and the title of the invention "An organophosphorus-based flame-retardant copolymerized nylon composition and its preparation method". technical field [0002] The invention relates to an organophosphorus-based flame-retardant copolymerized nylon composition and a preparation method thereof, belonging to the field of polymer flame-retardant materials, in particular to a flame-retardant material used in textiles, packaging materials, automobile parts, motor parts, engineering plastics, etc. Copolymerized nylon composition and method for its preparation. Background technique [0003] Nylon is widely used in construction, chemical industry, transportation and military fields due to its excellent properties such as high strength, heat resistance, wear resistance and solvent resistance. However, hydrogen bonds can be formed between its amide bonds and water molecules, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08K3/34C08K3/36C08K3/22C08G69/42
CPCC08G69/42C08K3/22C08K3/346C08K3/36C08K2003/2241C08K2003/2296C08K2201/011C08K3/34C08L77/06
Inventor 马永梅陶云峰吕文涛方辉张京楠陈群跃张程夕易丹青郑鲲
Owner CHENGDU TALY TECH CO LTD
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