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Preparation method of high-flame-retardant high-temperature-hydrolysis-resistant multi-element bio-based nylon composite material

A technology of bio-based nylon and composite materials, which is applied in the field of preparation of high-flame-retardant, high-temperature-resistant and hydrolyzed multi-component bio-based nylon composite materials, which can solve the problems of difficult dispersion of flame retardants, performance degradation, and limited application range, etc., and achieve excellent high temperature and water resistance solution performance

Active Publication Date: 2021-06-18
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used halogen-free flame retardants are halogen-free flame retardants represented by phosphorus-nitrogen flame retardants, but it is difficult to disperse such flame retardants in the plastic matrix, and the large amount of addition makes it difficult to Processing, performance degradation, cost increase, thus limiting its scope of application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a highly flame-retardant and high-temperature-resistant hydrolyzed multi-component bio-based nylon composite material, specifically as follows:

[0028] (1) Mix graphene oxide, 1,5-pentamethylenediamine, and polyethylene glycol 400 diamine in a mass ratio of 1:2:3, and perform microwave hydrothermal treatment. The microwave hydrothermal time is 1 hour, and the hydrothermal temperature is 120 °C, the microwave power is 1000W, and placed in a vacuum oven at 40 °C for 24 hours to obtain aminated graphene.

[0029] (2) 1,5-pentanediamine, 6-amino-6-deoxy-2,3,4,5-tetra-O-methyl-D-gluconic acid, D-glucuronic acid, ω-undecapitate Amino acid and decanediamine are dissolved in water at a molar ratio of 1:0.5:1:1:1, and the mass fraction is 20%, and the resulting solution is placed in a high-pressure reactor, and the reaction temperature is controlled at 135°C, and the reaction pressure is 1.5Mpa; the reaction is 0.3 After h, the pressure was released to d...

Embodiment 2

[0036] A method for preparing a highly flame-retardant and high-temperature-resistant hydrolyzed multi-component bio-based nylon composite material, specifically as follows:

[0037] (1) Mix graphene oxide, 1,5 pentamethylenediamine, and polyethylene glycol 400 diamine in a mass ratio of 3:4:5, and perform microwave hydrothermal treatment. The microwave hydrothermal time is 3 hours, and the hydrothermal temperature is 140 ℃, the microwave power is 3000W, and placed in a 60 ℃ vacuum drying oven for 24 hours to obtain aminated graphene.

[0038](2) 1,5-pentanediamine, 6-amino-6-deoxy-2,3,4,5-tetra-O-methyl-D-gluconic acid, D-glucuronic acid, ω-undecapitate Amino acid, decanediamine, dissolved in water with a molar ratio of 1.2: 0.7: 1.2: 1.2: 1.2, the mass fraction is 40%, the resulting solution is placed in a high-pressure reactor, the reaction temperature is controlled at 175 ° C, and the reaction pressure is 3.5Mpa; After 0.5h, the pressure was released to discharge the wate...

Embodiment 3

[0045] A method for preparing a highly flame-retardant and high-temperature-resistant hydrolyzed multi-component bio-based nylon composite material, specifically as follows:

[0046] (1) Mix graphene oxide, 1,5 pentamethylenediamine, and polyethylene glycol 400 diamine in a mass ratio of 2:3:4, and perform microwave hydrothermal treatment. The microwave hydrothermal time is 2 hours, and the hydrothermal temperature is 130 °C, the microwave power is 2000W, and placed in a vacuum oven at 50 °C for 24 hours to obtain aminated graphene.

[0047] (2) 1,5-pentanediamine, 6-amino-6-deoxy-2,3,4,5-tetra-O-methyl-D-gluconic acid, D-glucuronic acid, ω-undecapitate Amino acid and decanediamine are dissolved in water with a molar ratio of 1.1:0.6:1.1:1.1:1.1, and the mass fraction is 30%. The resulting solution is placed in a high-pressure reactor, and the reaction temperature is controlled at 155° C., and the reaction pressure is 2.5Mpa; the reaction is 0.4 After h, the pressure was rele...

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Abstract

The invention relates to the field of bio-based polymer composite materials, and aims to provide a preparation method of a high-flame-retardant high-temperature-hydrolysis-resistant multi-element bio-based nylon composite material. The composite material comprises the following steps: carrying out hydrothermal reaction on graphene oxide, 1,5-diaminopentane and polyethylene glycol 400 diamine to obtain aminated graphene; enabling 1,5-diaminopentane, 6-amino-6-deoxy-2,3,4,5-tetra-O-methyl-D-gluconic acid, D-glucuronic acid, omega-undecaamino acid and decamethylene diamine to react to obtain a mixture I; reacting polyethylene glycol 200 diamine, amino cellulose, alpha,omega-tridecane diamine and adipic acid to obtain a mixture II; reacting the mixture I with the mixture II to obtain a mixture III; and reacting aminated graphene with the mixture III to obtain a mixture IV, and performing polymerization reaction to obtain the composite material. Graphene is well dispersed into a multi-element bio-based nylon system to obtain a specific crystal structure and a high-entropy characteristic, so that the material has the characteristics of high-temperature stability and high chemical stability. The product has high flame retardance and high-temperature hydrolysis resistance.

Description

technical field [0001] The invention belongs to the field of bio-based polymer composite materials, and in particular relates to a preparation method of a highly flame-retardant, high-temperature-resistant and hydrolysis-resistant multi-component bio-based nylon composite material. Background technique [0002] The nylon industry plays an important role in my country's economic and social development. Nylon 66 and nylon 6 are the two most widely used nylon materials in industrial engineering, and their raw materials mainly depend on the petrochemical industry. With the depletion of energy sources and high oil prices, bio-based nylon prepared from biomass resources and renewable raw materials has become an inevitable development trend. In addition, most nylons are faced with relatively harsh use environments, such as high temperature, high humidity, and high voltage. The flame retardant properties of nylon materials play a vital role in practical applications. However, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00
CPCC08G83/001
Inventor 暴宁钟顾奥张玲洁
Owner NANJING TECH UNIV