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Biomass composite ammonium polyphosphate intumescent flame retardant, preparation method and application thereof

A technology for compounding ammonium polyphosphate and intumescent flame retardant, applied in the field of composite materials, can solve the problems of insufficient flame retardant efficiency, poor water resistance of intumescent flame retardant, etc., and achieve excellent carbon residue rate, high flame retardant efficiency, and low hygroscopicity. Effect

Active Publication Date: 2020-12-11
HUBEI ENG UNIV
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Problems solved by technology

[0005] In order to solve the shortcomings of poor water resistance and insufficient flame retardant efficiency of existing intumescent flame retardants, the present invention provides a biomass composite ammonium polyphosphate intumescent flame retardant that is environmentally friendly, has low hygroscopicity, and high flame retardant efficiency. The technical solution adopted is :

Method used

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  • Biomass composite ammonium polyphosphate intumescent flame retardant, preparation method and application thereof
  • Biomass composite ammonium polyphosphate intumescent flame retardant, preparation method and application thereof
  • Biomass composite ammonium polyphosphate intumescent flame retardant, preparation method and application thereof

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preparation example Construction

[0036] The preparation method of above-mentioned biomass composite ammonium polyphosphate expansion flame retardant specifically comprises the following steps:

[0037] Step 1, weighing 65-85 parts of ammonium polyphosphate, 10.5-28 parts of starch derivatives and 4-7 parts of biomass;

[0038] Step 2. Add the starch derivative weighed in step 1 into deionized water, stir at room temperature to disperse the starch derivative evenly, obtain a starch dispersion with a mass percentage concentration of 3-12wt%, and heat the starch dispersion to 70- 130°C, and stir at constant temperature for 0.5-3h until starch gelatinization, after cooling down to 30-60°C, starch paste liquid is obtained;

[0039] Step 3, adding the biomass weighed in step 1 into deionized water, stirring at room temperature to dissolve the biomass, and obtaining a biomass solution with a mass percentage concentration of 2-7wt%;

[0040] Step 4. Disperse the ammonium polyphosphate weighed in step 1 in deionized ...

Embodiment 1

[0046] Step 1, weighing 70 parts of ammonium polyphosphate, 17 parts of starch phosphate and 6.5 parts of hyaluronic acid;

[0047] Step 2. Add the starch phosphate ester weighed in step 1 into deionized water, stir at room temperature to disperse the starch phosphate ester evenly, obtain a starch dispersion with a mass percentage concentration of 5wt%, and heat the starch dispersion to 80° C., and Stir at constant temperature for 2.5 hours until the starch is gelatinized, and after cooling down to 40°C, the starch paste liquid is obtained;

[0048] Step 3, adding the hyaluronic acid weighed in the step 1 into deionized water, stirring at room temperature to dissolve the hyaluronic acid, and obtaining a biomass solution with a mass percent concentration of 4 wt %;

[0049] Step 4. Disperse the ammonium polyphosphate weighed in step 1 in deionized water to obtain an ammonium polyphosphate dispersion with a mass percent concentration of 40 wt%, and add the starch paste obtained ...

Embodiment 2

[0053] Step 1, weighing 80 parts of ammonium polyphosphate, 15 parts of starch phosphate and 5 parts of sodium alginate;

[0054] Step 2. Add the starch phosphate weighed in step 1 into deionized water, stir at room temperature to disperse the starch phosphate evenly, obtain a starch dispersion with a mass percentage concentration of 8wt%, and heat the starch dispersion to 130° C., and Stir at constant temperature for 1 hour until the starch is gelatinized, and after cooling down to 50°C, the starch paste liquid is obtained;

[0055] Step 3, adding the sodium alginate weighed in step 1 into deionized water, stirring at room temperature to dissolve the sodium alginate to obtain a biomass solution with a concentration of 6 wt% by mass;

[0056] Step 4. Disperse the ammonium polyphosphate weighed in step 1 in deionized water to obtain an ammonium polyphosphate dispersion with a mass percent concentration of 40 wt%, and add the starch paste obtained in step 2 to the ammonium polyp...

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Abstract

The invention discloses a biomass composite ammonium polyphosphate intumescent flame retardant, a preparation method and application thereof. The biomass composite ammonium polyphosphate intumescent flame retardant comprises the following raw materials in parts by mass: 65-85 parts of ammonium polyphosphate, 10.5-28 parts of starch derivative, and 4-7 parts of biomass, wherein the starch derivative comprises one or a mixture of two of starch phosphate and starch polyphosphate, and the biomass comprises one or a mixture of more of sodium alginate, hyaluronic acid, a chitosan derivative and a cellulose derivative. According to the biomass composite ammonium polyphosphate intumescent flame retardant disclosed by the invention, the starch derivative and the biomass are used as carbon sources,the biomass is compounded and cross-linked with the starch derivative through a high-temperature dry-heat reaction, and a compact coating layer is formed on the surface of ammonium polyphosphate, so that the prepared composite intumescent flame retardant has excellent water resistance and flame retardant efficiency; and the flame retardant of the invention has the advantages of abundant raw material sources, simple production technique, environment friendliness and low preparation cost, and can be widely used for flame retardancy of polar polymer materials.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a biomass composite ammonium polyphosphate expansion flame retardant and a preparation method and application thereof. Background technique [0002] Intumescent flame retardant (IFR) is a new type of flame retardant mainly composed of acid source, gas source and carbon source. When the polymer material is burned, the phosphoric acid generated by the thermal decomposition of the acid source is used as a dehydrating agent to dehydrate and carbonize the carbon source. ; At the same time, the water vapor produced by the heating reaction and the non-combustible gas produced by the gas source make the molten system expand and foam, forming an expanded carbon layer to block external heat and oxygen from entering the combustion zone, thus having a flame-retardant effect. IFR has the advantages of low smoke, low toxicity, and no corrosive gas generation. It has become a hot sp...

Claims

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Application Information

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IPC IPC(8): C08K9/10C08K3/32C08L75/04C08L61/24C08L63/00
CPCC08K9/10C08K3/32C08K2003/323C08L2201/02C08L75/04C08L61/24C08L63/00
Inventor 颜永斌张府侯如意田雪余轶杰刘小丹覃彩芹
Owner HUBEI ENG UNIV
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