Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Flame-retardant polyamide and preparation method and application thereof

A flame retardant and reactive flame retardant technology, applied in the field of flame retardant polyamide and its preparation, can solve problems such as blending of synergistic flame retardants, and achieve the effects of good water solubility, ensuring solubility and uniformity

Active Publication Date: 2015-12-23
THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent 201410056761.9 discloses a method for preparing highly flame-retardant nylon resin by polycondensation reaction between a reactive flame retardant and a polymer monomer, but its synergistic flame retardant still exists in the form of blending

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flame-retardant polyamide and preparation method and application thereof
  • Flame-retardant polyamide and preparation method and application thereof
  • Flame-retardant polyamide and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Example 1. Preparation of flame retardant polyamide based on reactive calcium ion salt flame retardant:

[0057] 1) First, prepare a reactive water-soluble flame retardant, add itaconic acid and hexamethylenediamine in a molar ratio of 1:1 into a four-necked flask with a stirrer, a thermometer, a reflux condenser and a nitrogen pipe, Nitrogen gas was introduced to react the two in water at 60°C for 0.5h to obtain an aqueous solution of hexamethylenediamine itaconate; -6-Oxide (DOPO) was slowly added to the aqueous solution of hexamethylenediamine itaconate, so that the molar ratio of DOPO and hexamethylenediamine itaconate was 1:1, reflux at 90°C for 2.5h, and cool to room temperature , filter the reaction product, dissolve and recrystallize with deionized water 5 times to remove impurities, and dry to obtain a reactive water-soluble flame retardant, which is the compound shown in formula 5 and / or formula 6, wherein, R 1 Be methylene; x is 6;

[0058] press again fi...

Embodiment 2

[0065] Example 2. Preparation of flame retardant polyamide based on reactive magnesium ion salt flame retardant:

[0066] 1) First, prepare a reactive water-soluble flame retardant, add itaconic acid and hexamethylenediamine in a molar ratio of 1:1 into a four-necked flask with a stirrer, a thermometer, a reflux condenser and a nitrogen pipe, Nitrogen gas was introduced to react the two in water at 60°C for 0.5h to obtain an aqueous solution of hexamethylenediamine itaconate; -6-Oxide (DOPO) was slowly added to the aqueous solution of hexamethylenediamine itaconate, so that the molar ratio of DOPO and hexamethylenediamine itaconate was 1:1, reflux at 90°C for 2.5h, and cool to room temperature , filter the reaction product, dissolve and recrystallize with deionized water 5 times to remove impurities, and dry to obtain a reactive water-soluble flame retardant, which is the compound shown in formula 5 and / or formula 6, wherein, R 1 Be methylene; x is 6;

[0067] press again ...

Embodiment 3

[0073] Example 3. Preparation of flame retardant polyamide based on reactive magnesium ion salt flame retardant:

[0074] 1) First, prepare a reactive water-soluble flame retardant, add itaconic acid and hexamethylenediamine in a molar ratio of 1:1 into a four-necked flask with a stirrer, a thermometer, a reflux condenser and a nitrogen pipe, Nitrogen gas was introduced to react the two in water at 60°C for 0.5h to obtain an aqueous solution of hexamethylenediamine itaconate; -6-Oxide (DOPO) was slowly added to the aqueous solution of hexamethylenediamine itaconate, so that the molar ratio of DOPO and hexamethylenediamine itaconate was 1:1, reflux at 90°C for 2.5h, and cool to room temperature , filter the reaction product, dissolve and recrystallize with deionized water 5 times to remove impurities, and dry to obtain a reactive water-soluble flame retardant, which is the compound shown in formula 5 and / or formula 6, wherein, R 1 Be methylene; x is 6;

[0075] press again ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
oxygen indexaaaaaaaaaa
oxygen indexaaaaaaaaaa
oxygen indexaaaaaaaaaa
Login to View More

Abstract

The invention discloses a compound represented by the formula 1 and / or the formula 2, and a preparation method and an application thereof. In the formula 1 and the formula 2, a is 4-10, b is 4-12, R1 is C1-C4 alkylene, x is 4-10, M<2+> is a divalent metal ion, n is 100-200, and m is 20-30. The preparation method includes the following steps: 1) carrying out a condensation reaction of a reactive flame retardant and a diacid monomer in deionized water, to obtain a prepolymer; 2) putting the prepolymer obtained in step 1) and a polymeric monomer in deionized water, and carrying out a polymerization reaction in a reaction kettle, to obtain a reaction product 1; 3) carrying out decompression and water drainage on the reaction product 1, to obtain a reaction product 2; and 4) carrying out a reaction of the reaction product 2 in the reaction kettle in the step 3) in vacuum, to obtain the compound represented by the formula 1 and / or the formula 2. The obtained novel flame-retardant polyamide is prepared by using the reactive water-soluble flame retardant, the preparation reaction process is easy to control, and the flame-retardant polyamide has permanent flame retardancy.

Description

technical field [0001] The invention belongs to the field of flame retardant preparation, and in particular relates to a flame retardant polyamide and its preparation method and application. Background technique [0002] As one of the most important engineering plastics and textile fiber materials, polyamide has many excellent properties such as high strength and wear resistance, and is widely used in construction, textile, military and other fields. However, the flammability of polyamide affects its wider application. At present, most of the development of flame retardant polyamide still stays in the blending and granulation of polyamide matrix and blended flame retardants and related synergistic flame retardants. This method has many disadvantages such as adding a large amount of flame retardants, The poor dispersion in the polyamide matrix and the limitation of many properties of the polyamide itself have narrowed the application range of the blended flame retardant polya...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/42C08L77/06
Inventor 冯新星张建春张华刘梅军刘雪强来侃马天
Owner THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com