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Halogen-free flame-retardation nylon 6 montmorillonite nanocomposite and preparation method thereof

A nano-composite material, flame-retardant nylon technology, applied in the field of nylon 6 composite materials, can solve the problems of large amount of flame retardant, poor flame retardant effect, burning and dripping, etc., and achieve less amount of flame retardant and flame retardant efficiency. High and low cost effect

Inactive Publication Date: 2014-12-17
JUNMA TIRE CORD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the existing technical difficulties such as large amount of flame retardant, poor flame retardant effect, burning dripping and high cost, and to provide a synergistic flame retardant of nano-montmorillonite, less flame retardant dosage, high flame retardant effect Preparation method of high-quality and low-cost halogen-free flame-retardant nylon 6 / montmorillonite nanocomposite

Method used

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  • Halogen-free flame-retardation nylon 6 montmorillonite nanocomposite and preparation method thereof
  • Halogen-free flame-retardation nylon 6 montmorillonite nanocomposite and preparation method thereof
  • Halogen-free flame-retardation nylon 6 montmorillonite nanocomposite and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0027] Step 1, preparation of modified organic montmorillonite nanoparticles

[0028] Add 5 parts of organic montmorillonite nanoparticles to 90 parts of water and mechanically stir to form a stable suspension, add 5 parts of long-chain alkyl bromide tetradecyltriphenylphosphine bromide to carry out cation exchange reaction, and heat to 80°C in a water bath React for 5h, suction filter after the exchange is completed, and wash the precipitate with distilled water until there is no Br in the filtrate - ion. The obtained organic montmorillonite was dried and passed through a 200-mesh sieve. The reaction equation is:

[0029]

[0030] Step 2, preparation of flame retardant salt

[0031] The preparation method of the halogen-free flame retardant is as follows: 10 parts by weight of 2-carboxyethylphenylphosphinic acid and 5 parts by weight (removed) of hexamethylenediamine are dissolved in N,N-dimethylformamide, and the constant temperature water bath Keep the water temperat...

Embodiment 2）

[0036] Step 1, preparation of modified organic montmorillonite nanoparticles

[0037] Add 5 parts of organic montmorillonite nanoparticles to 90 parts of water and mechanically stir to form a stable suspension, add 5 parts of long-chain alkyl bromide hexadecyltributylphosphine bromide for cation exchange reaction, and heat to 80°C in a water bath React for 5h, suction filter after the exchange is completed, and wash the precipitate with distilled water until there is no Br in the filtrate - ion. The obtained organic montmorillonite was dried and passed through a 200-mesh sieve.

[0038] Step 2, preparation of flame retardant salt

[0039] The preparation method of the halogen-free flame retardant is as follows: 4 parts by weight of bis(p-carboxyphenyl)phenylphosphine oxide and 2 parts by weight of hexamethylenediamine are dissolved in N,N-dimethylformamide, and the constant temperature water bath Keep the water temperature at 55°C and react for 3-5h, then cool, filter, and wa...

Embodiment 3）

[0043] Step 1, preparation of organic montmorillonite

[0044] Add 5 parts of montmorillonite to 90 parts of water and mechanically stir to form a stable suspension, add 5 parts of long-chain alkyl bromide hexadecyltriphenylphosphine bromide to carry out cation exchange reaction, heat the water bath to 80 ° C for 5 hours, After the exchange is completed, filter with suction, and wash the precipitate with distilled water until there is no Br in the filtrate - ion. The obtained organic montmorillonite was dried and passed through a 200-mesh sieve.

[0045] Step 2, preparation of flame retardant salt

[0046] The preparation method of the halogen-free flame retardant is as follows: 15 parts by weight of 2-carboxyethylphenylphosphinic acid and 5 parts by weight of hexamethylenediamine are dissolved in N,N-dimethylformamide, and the water temperature is kept in a constant temperature water bath. React at 55°C for 3-5h, then cool, filter, and wash with absolute ethanol.

[0047]...

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Abstract

The invention relates to a nylon 6 composite material, and especially relates to a halogen-free flame-retardation nylon 6 montmorillonite nanocomposite and a preparation method thereof. The preparation method comprises the following steps: modified organo montmorillonite is subjected to in situ polymerization with a halogen-free fire-retardant salt and caprolactam, and dispersed in the nylon 6 containing a fire retardant with a nano particles form. The flame-retardation composite material has the advantages of high efficiency oxygen permeability, less fire retardant amount, low cost, high flame retardation efficiency and high mechanical property. The halogen-free flame-retardation nylon 6 montmorillonite nanocomposite has the advantages of no toxicity, no harmful gas and no environment pollution after being combusted. Due to addition of organo montmorillonite, a unique lamellar and a char forming agent are combusted to form a charcoal layer to obstruct the contact of air and nylon 6, so that flame retardant synergism is realized.

Description

technical field [0001] The invention relates to a nylon 6 composite material, in particular to a halogen-free flame-retardant nylon 6 / montmorillonite nanocomposite material and a preparation method thereof. Background technique [0002] Nylon 6 is a polymer compound containing amide groups in the main chain. It has comprehensive advantages such as high melting point, good wear resistance, strong corrosion resistance and excellent processing performance. It is widely used in the production of knitwear, tire cord, filter cloth , ropes, fishing nets, auto parts and packaging materials, etc. However, nylon 6 fiber is a flammable fiber with a limiting oxygen index (LOI) of around 21. With the wide application of fiber fabrics, the potential danger of fire is becoming more and more prominent. In addition, nylon 6 fabrics are easy to form melting when burned, and the molten droplets are easy to carry Therefore, the flame retardant and anti-droplet modification of nylon 6 fiber has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/42C08L77/02C08K13/06C08K9/04C08K3/34
Inventor 顾晓华吴奎孙佳妮薛芳峰
Owner JUNMA TIRE CORD
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