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Nano attapulgite composite flame retardant and preparation method thereof

A nano-attapulgite and nano-composite technology is applied in the field of nano-attapulgite composite flame retardant and its preparation, which can solve problems such as environmental pollution and achieve the effects of improving comprehensive performance, recyclable solvent and low cost.

Pending Publication Date: 2022-02-08
LANZHOU PETROCHEM COLLEGE OF VOCATIONAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, halogen-based flame retardants will produce a large amount of corrosive and toxic gases during the use and recycling process, which will pollute the environment. With the advancement of the concept of green development, halogen flame retardants will eventually be eliminated, and halogen-free flame retardants are inevitable. There is an urgent need to develop new low-smoke, low-toxic, halogen-free, environmentally friendly flame retardants and flame-retardant polymer materials to replace halogen-based flame retardants

Method used

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  • Nano attapulgite composite flame retardant and preparation method thereof
  • Nano attapulgite composite flame retardant and preparation method thereof
  • Nano attapulgite composite flame retardant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Attapulgite purification: add 30g of attapulgite powder to a 500ml two-neck bottle equipped with mechanical stirring, add 0.6g of sodium hexametaphosphate modifier, and then add 300ml of deionized water as a solvent, and control the temperature to react at 35-55 °C 4h, after the reaction was completed, it was lowered to room temperature, and the product was statically removed to remove large particles of impurities, then centrifuged, washed, and dried, and the obtained purified product was placed in an oven at 60 °C for 12h to obtain an off-white solid.

[0035] Preparation of composite flame retardant: take 10g of the above attapulgite solid powder, disperse it in 500ml of absolute ethanol, add 8.6g of 4,4-dihydroxydiphenylsulfone (BPS), fully dissolve and add 14ml of triethylamine (TEA), Accurately weigh 4g of hexachlorocyclotriphosphazene (HCCP) and dissolve it in 80ml of absolute ethanol, place it in a 100ml constant pressure dropping funnel, start the mechanical sti...

Embodiment 2

[0037]Attapulgite purification: add 30g of attapulgite powder to a 500ml two-necked bottle equipped with mechanical stirring, add 5ml of concentrated hydrochloric acid as a modifier, and then add 300ml of deionized water as a solvent, and control the temperature to react at 35 ~ 55 ℃ for 4h, After the reaction was completed, it was lowered to room temperature, and the product was statically removed to remove large particles of impurities, then centrifuged, washed, and dried. The obtained purified product was dried in an oven at 60°C for 12 hours to obtain an off-white solid.

[0038] Preparation of composite flame retardant: take 10g of the above attapulgite solid powder, disperse it in 500ml of absolute ethanol, add 8.6g of 4,4-dihydroxydiphenylsulfone (BPS) to fully dissolve, add 14ml of triethylamine (TEA), Accurately weigh 4g of hexachlorocyclotriphosphazene (HCCP) and dissolve it in 80ml of absolute ethanol, place it in a 100ml constant pressure dropping funnel, start the ...

Embodiment 3

[0046] Attapulgite purification: add 30g of attapulgite powder to a 500ml two-necked bottle equipped with mechanical stirring, add 50ml of 10% NaOH as a modifier, and then add 300ml of deionized water as a solvent, and control the temperature to react at 35~55℃ for 4h After the reaction was completed, it was lowered to room temperature, and the product was statically removed to remove large particles of impurities, and then centrifuged, washed, and dried.

[0047] Preparation of composite flame retardant: take 10g of the above attapulgite solid powder, disperse it in 500ml of absolute ethanol, add 7.8g of 4,4-dihydroxydibenzylmethane (DADPM) to fully dissolve, add 14ml of triethylamine (TEA), Accurately weigh 4g of hexachlorocyclotriphosphazene (HCCP) and dissolve it in 80ml of absolute ethanol, place it in a 100ml constant pressure dropping funnel, start the mechanical stirring, and start to add the mixed solution dropwise. The reaction temperature is 60° C., the reaction is ...

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Abstract

The invention provides an attapulgite nano composite flame retardant and a preparation method thereof, the flame retardant is prepared from natural mineral nano attapulgite and a phosphazene compound through a one-step polymerization method, and the flame retardant has good chemical stability, thermal stability and flame retardant property. The flame retardant has good compatibility with a polymer matrix after being added into a polymer material, can effectively improve the comprehensive performance of the material while retarding flame, and can play a role in enhancing the mechanical property of the material. The flame retardant has the advantages of simple preparation process, low cost, recyclable solvent, high efficiency, environment friendliness, migration resistance, hydrolysis resistance and the like. By combining the unique structure of the attapulgite and the characteristics of high phosphorus and nitrogen content and hydrolysis resistance of the polyphosphazene, the multifunctional high-efficiency nano composite flame retardant is prepared by a one-step method, the problems of high preparation cost, low flame retardant efficiency, poor migration resistance, poor matrix compatibility and the like of the conventional flame retardant are solved, and the flame retardant has a good market application prospect.

Description

technical field [0001] The invention relates to a nano attapulgite composite flame retardant and a preparation method thereof, in particular to a nano composite flame retardant prepared by compounding natural nano attapulgite and polyphosphazene materials. [0002] technical background [0003] At present, halogen-based flame retardants are still the organic flame retardants with the largest output in the world, especially bromine-containing flame retardant products, which are most widely used in the field of electronic appliances. However, halogen-based flame retardants will generate a large amount of corrosive and toxic gases during the use and recycling process, causing pollution to the environment. With the advancement of the concept of green development, halogen-based flame retardants will eventually be eliminated, and halogen-free flame retardants are inevitable. There is an urgent need to develop new low-smoke, low-toxic halogen-free environment-friendly flame retardan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L85/02C08K9/02C08K3/34C08L63/02C08G79/025
CPCC08K9/02C08K3/346C08G79/025C08L63/00C08L2201/02C08K2201/011C08L85/02
Inventor 王刚刘珂侯侠唐蓉萍徐成赵梓成陈佳旺
Owner LANZHOU PETROCHEM COLLEGE OF VOCATIONAL TECH
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