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

Phosphorous and nitrogen-containing flame retardant and its flame-retardant polyacrylonitrile fiber and preparation method

A flame retardant polyacrylonitrile, flame retardant technology, applied in the direction of chemical instruments and methods, compounds of Group 5/15 elements of the periodic table, organic chemistry, etc., can solve the problem of unfriendly, difficult industrialization and synthesis of flame retardant Complex process and other issues, to achieve the effect of easy industrialization, improved flame retardant performance, and simple synthesis process

Active Publication Date: 2022-02-01
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is that the flame retardants used for polyacrylonitrile in the prior art are unfriendly to the environment or the synthesis process is complicated and difficult to industrialize. The flame retardant has a phosphorus-nitrogen synergistic effect, which can efficiently improve the flame retardant performance of acrylic fibers. At the same time, the synthesis process is simple and easy to industrialize. It is a truly environmentally friendly green polymer material

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
  • Phosphorous and nitrogen-containing flame retardant and its flame-retardant polyacrylonitrile fiber and preparation method
  • Phosphorous and nitrogen-containing flame retardant and its flame-retardant polyacrylonitrile fiber and preparation method
  • Phosphorous and nitrogen-containing flame retardant and its flame-retardant polyacrylonitrile fiber and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Preparation of phosphorus and nitrogen flame retardant monomers:

[0041]Feed vinylphosphonic acid and urea at a molar ratio of 1:1, react in an aqueous solution at 90°C for 3 hours, wash and purify by rotary evaporation and distilled water to obtain a white powder of vinylphosphonic acid amine salt, and dry it at 80°C for later use . Yield 80.4 wt%.

[0042] Preparation of phosphorus and nitrogen flame retardant polyacrylonitrile copolymer:

[0043] The method of solution polymerization is adopted, and dibenzoyl peroxide is used as the initiator, and the amount of the initiator accounts for 0.5% of the weight of the monomer, and the ratio of the monomer acrylonitrile, methyl acrylate, and vinyl phosphate amine salt is 76:9:15 , accounting for 15% of the weight of the entire system; the solvent dimethyl sulfoxide accounted for 85% of the weight of the entire system, the polymerization temperature was 70°C, the reaction time was 24 hours, and the yield was 58.7wt%. Af...

Embodiment 2

[0045] Preparation of phosphorus and nitrogen flame retardant monomers:

[0046] Feed vinylphosphonic acid and melamine at a molar ratio of 1:1, react in an aqueous solution at 90°C for 6 hours, wash and purify by rotary steaming and distilled water to obtain white powder of vinylphosphonic acid melamine salt, dry at 80°C for later use . Yield 82.3 wt%.

[0047] Preparation of phosphorus and nitrogen flame retardant polyacrylonitrile copolymer:

[0048] The method of solution polymerization is adopted, with dibenzoyl peroxide as the initiator, the amount of the initiator accounts for 0.5% of the weight of the monomer, and the ratio of the monomer acrylonitrile, methyl acrylate, and vinyl phosphate melamine salt is 76:9:15 , accounting for 15% of the weight of the entire system; the solvent dimethyl sulfoxide accounted for 85% of the weight of the entire system, the polymerization temperature was 70°C, the reaction time was 24 hours, and the yield was 64.7wt%. After film coa...

Embodiment 3

[0050] Preparation of phosphorus and nitrogen flame retardant monomers:

[0051] Feed vinylphosphonic acid and melamine at a molar ratio of 1:1, react in an aqueous solution at 90°C for 6 hours, wash and purify by rotary steaming and distilled water to obtain white powder of vinylphosphonic acid melamine salt, dry at 80°C for later use . Yield 82.3 wt%.

[0052] Preparation of phosphorus and nitrogen flame retardant polyacrylonitrile copolymer:

[0053] The method of solution polymerization is adopted, with dibenzoyl peroxide as the initiator, the amount of the initiator accounts for 1% of the weight of the monomer, and the ratio of the monomer acrylonitrile, methyl acrylate, and vinyl phosphate melamine salt is 76:9:15 , accounting for 15% of the weight of the entire system; the solvent dimethyl sulfoxide accounted for 85% of the weight of the entire system, the polymerization temperature was 70 ° C, the reaction time was 17 hours, and the yield was 54.1 wt%. After film co...

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

No PUM Login to View More

Abstract

The invention discloses a phosphorus-nitrogen-containing flame retardant and its flame-retardant polyacrylonitrile fiber and a preparation method, mainly solving the problem that the flame retardant used for polyacrylonitrile in the prior art is not friendly to the environment or the synthesis process is complicated and difficult to be industrialized The problem is that by adopting a flame retardant containing phosphorus and nitrogen, it has the following structural formula, where n=0-4; R1 is selected from at least one of H and OH; R2 and R3 are arbitrarily selected from H, methyl, The technical solution of at least one of ethyl group and melamine group solves this problem well, and can be used in the industrialized production of flame-retardant polyacrylonitrile.

Description

technical field [0001] The invention relates to the technical field of preparation of a flame retardant and flame-retardant polyacrylonitrile fibers. Specifically, the invention relates to a phosphorus-nitrogen-containing flame retardant without halogen elements, flame-retardant polyacrylonitrile fiber and a preparation method thereof. [0002] technical background [0003] Polyacrylonitrile fiber is a synthetic fiber similar to wool, which is widely used in clothing, home decoration and industrial purposes, especially in the textile industry, clothing uses account for 70% of the world's total use of polyacrylonitrile fibers. As a daily necessity closely related to human life, textiles have been widely used in all walks of life, but because textiles are flammable, the possibility of causing fires during use is increasing, and people's lives and property safety are greatly threatened . In particular, the limiting oxygen index (17-19%) of polyacrylonitrile fibers is low, and ...

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 Patents(China)
IPC IPC(8): C08F220/48C08F220/14C08F230/02C09D133/20C07F9/38C07D251/56
CPCC08F220/48C09D143/02C07F9/3826C07D251/56C08F220/14C08F230/02
Inventor 董雪李应成沈志刚周勤灼
Owner CHINA PETROLEUM & CHEM CORP
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