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Preparation method of green sustainable chemical-physical synergistic intumescent flame-retardant system

An intumescent flame retardant and chemical technology, applied in the field of flame retardant materials, can solve the problems of restricting the development of chemical intumescent flame retardant systems, expensive and non-renewable carbon source materials, etc., to achieve good application potential, improve flame retardant efficiency, and increase added value. Effect

Pending Publication Date: 2021-10-01
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the rapid development of the world economy, petrochemical resources are being depleted at an accelerated rate, which not only makes petroleum-based carbon source materials more expensive and non-renewable, but greatly limits the development of chemical intumescent flame retardant systems; moreover, the extensive exploitation of petroleum resources It will also cause serious environmental pollution problems

Method used

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  • Preparation method of green sustainable chemical-physical synergistic intumescent flame-retardant system
  • Preparation method of green sustainable chemical-physical synergistic intumescent flame-retardant system
  • Preparation method of green sustainable chemical-physical synergistic intumescent flame-retardant system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] ---The preparation process of starch flame retardant:

[0043] a. Weigh 5 g of soluble starch and place it in a beaker, add 10 ml of concentrated phosphoric acid, seal it with a parafilm, and stir it magnetically for about 30 minutes to obtain a uniformly dispersed milky white viscous liquid A;

[0044] b. Transfer the liquid A to the reactor, place it in a drying oven at 100°C for 2 hours, and the product obtained is a brownish-yellow liquid flame retardant intermediate B;

[0045] c. Put 15 g of melamine in a three-necked flask, add 50 ml of deionized water, and make an aqueous melamine dispersion under mechanical stirring. After heating the system to 95°C, add the flame retardant intermediate B solution drop by drop. After the dropwise addition, continue aging at constant temperature for 30 min;

[0046] d. When the system drops to room temperature, vacuum filter, rinse with deionized water repeatedly for 3-5 times, and collect the filter cake;

[0047] e. Dry the ...

Embodiment 2

[0056] ---The preparation process of starch flame retardant:

[0057] a. Weigh 5 g of soluble starch and place it in a beaker, add 10 ml of concentrated phosphoric acid, seal it with a parafilm, and stir it magnetically for about 30 minutes to obtain a uniformly dispersed milky white viscous liquid A;

[0058] b. Transfer the liquid A to the reactor, place it in a drying oven at 100°C for 2 hours, and the product obtained is a brownish-yellow liquid flame retardant intermediate B;

[0059] c. Put 15 g of melamine in a three-necked flask, add 50 ml of deionized water, and make an aqueous melamine dispersion under mechanical stirring. After heating the system to 95°C, add the flame retardant intermediate B solution drop by drop. After the dropwise addition, continue aging at constant temperature for 30 min;

[0060] d. When the system drops to room temperature, vacuum filter, rinse with deionized water repeatedly for 3-5 times, and collect the filter cake;

[0061] e. Dry the ...

Embodiment 3

[0070] ---The preparation process of starch flame retardant:

[0071] a. Weigh 5 g of soluble starch and place it in a beaker, add 10 ml of concentrated phosphoric acid, seal it with a parafilm, and stir it magnetically for about 30 minutes to obtain evenly dispersed milky white viscous liquid A;

[0072] b. Transfer the liquid A to the reactor, place it in a drying oven at 100°C for 2 hours, and the product obtained is a brownish-yellow liquid flame retardant intermediate B;

[0073] c. Put 15 g of melamine in a three-necked flask, add 50 ml of deionized water, and make an aqueous melamine dispersion under mechanical stirring. After heating the system to 95°C, add the flame retardant intermediate B solution drop by drop. After the dropwise addition, continue aging at constant temperature for 30 min;

[0074] d. When the system drops to room temperature, vacuum filter, rinse with deionized water repeatedly for 3-5 times, and collect the filter cake;

[0075] e. Dry the filte...

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Abstract

The invention discloses a preparation method of a green sustainable chemical-physical synergistic intumescent flame-retardant system, and aims to prepare a high-performance three-source integrated starch-based flame retardant by using reproducible starch with rich sources as a carbon source to replace a traditional petroleum cracking product; and hydrophobic treatment is carried out, so that the compatibility with a matrix is improved, and the problem of easy precipitation due to moisture is reduced. Meanwhile, the starch-based flame retardant with the chemical expansion characteristic and expandable graphite with the physical expansion effect are combined for use, a chemical-physical synergistic expansion flame-retardant polyolefin system is established, and efficient flame-retardant polyolefin is achieved by reducing heat transfer, inhibiting thermal degradation and isolating generated combustible gas from external oxygen. The flame retardant prepared by the method has the advantages of being wide in raw material source, low in cost, non-toxic, smokeless, green, efficient and the like, is harmless to the environment and human bodies, realizes effective utilization and conversion of natural resources, improves the added value of materials, and thus has good application potential.

Description

technical field [0001] The invention belongs to the technical field of flame retardant materials, and in particular relates to a preparation method of a green sustainable chemical-physical synergistic expansion flame retardant system. Background technique [0002] With the development of the times and the progress of science and technology, polyolefin materials have been widely used in the fields of processing and manufacturing, agriculture, industry, national defense and science and technology with their unique structure and excellent processing performance, and have become the basis for human survival and development. An important material basis. However, many polyolefin materials are mainly composed of two elements, carbon and hydrogen, which are easy to decompose and burn when heated, release a large amount of heat, cause serious melting and dripping, and release a large amount of toxic and harmful smoke, causing huge damage to people's life and property safety. At the ...

Claims

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Application Information

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IPC IPC(8): C08G77/452C08B31/00C08B31/06C08L23/12C08L83/10C08K9/00C08K3/04C08L23/06
CPCC08G77/452C08B31/00C08B31/066C08L23/12C08L23/06C08L2201/02C08L2201/22C08L83/10C08K9/00C08K3/04
Inventor 郑再航夏雨柔刘宇航廖晨晨柴威鸿戴博雅胡紫晴牛恩辰
Owner CHANGCHUN UNIV OF TECH