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Composite intumescent flame retardant for polypropylene

An intumescent flame retardant and compound intumescent technology, applied in the field of materials, can solve the problems of affecting the performance of raw materials, large addition amount, etc., and achieve the effects of small loss of toughness, low toxicity and good thermal stability.

Inactive Publication Date: 2013-11-27
大禹节水(天津)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the intumescent flame retardant has the advantages of excellent flame retardancy, halogen-free, low smoke, low toxicity, anti-melt droplet and no corrosive gas, there are also problems such as in order to obtain the required flame retardancy effect, a large amount of addition will bring A series of issues such as cost, affecting the performance of raw materials, etc.

Method used

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  • Composite intumescent flame retardant for polypropylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Composite intumescent flame retardant for polypropylene is composed of the following components by weight ratio: nano-montmorillonite modified dipentaerythritol phosphate: 20 parts; ammonium polyphosphate: 30 parts; bisphenol A diphosphate melamine salt : 50 servings.

[0029] The preparation method of the above-mentioned nano-montmorillonite modified dipentaerythritol phosphate is: add 27g of dipentaerythritol and 100ml xylene in a three-necked flask, slowly add 10g of phosphoric acid dropwise, stir and react at 150°C to obtain a viscous product, filter while hot, Dissolve the product in absolute ethanol, stir and cool to room temperature, suction filter, dry, and grind to obtain a white powdery solid for later use; take 100g of nano-montmorillonite and disperse it in an ethanol aqueous solution with a weight ratio of 1:1 to make a concentration of 0.048g / ml solution, then add 32.8g of aminosilane coupling agent, and reflux at about 75°C for 24h to obtain amino-modifi...

Embodiment 2

[0035] Composite intumescent flame retardant for polypropylene is composed of the following components by weight ratio: nano-montmorillonite modified dipentaerythritol phosphate: 20 parts; ammonium polyphosphate: 40 parts; bisphenol A diphosphate melamine salt : 40 servings.

[0036] The preparation method of the above-mentioned nano-montmorillonite modified dipentaerythritol phosphate is the same as in Example 1.

[0037] The preparation method of the above-mentioned bisphenol A diphosphate melamine salt is the same as in Example 1.

[0038] The degree of polymerization of the above-mentioned ammonium polyphosphate is 200-400.

[0039] The method of granulation is the same as in Example 1.

Embodiment 3

[0041] Composite intumescent flame retardant for polypropylene is composed of the following components by weight ratio: nano-montmorillonite modified dipentaerythritol phosphate: 30 parts; ammonium polyphosphate: 20 parts; bisphenol A diphosphate melamine salt : 50 servings.

[0042] The preparation method of the above-mentioned nano-montmorillonite modified dipentaerythritol phosphate is the same as in Example 1.

[0043] The preparation method of the above-mentioned bisphenol A diphosphate melamine salt is the same as in Example 1.

[0044] The degree of polymerization of the above-mentioned ammonium polyphosphate is 100-200.

[0045] The method of granulation is the same as in Example 1.

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Abstract

A composite intumescent flame retardant for polypropylene is prepared by compositing the following components in parts by weight: 20-40 parts of dipentaerythritol phosphate modified by nano montmorillonite, 10-40 parts of ammonium polyphosphate, 20-50 parts of bisphenol A phosphoric acid melamine salt and 0-2 parts of flame retardant synergist. The composite intumescent flame retardant for the polypropylene, provided by the invention, has an excellent flame retardant property, and is halogen-free, low in smoke and toxicity, and non-corrosive in gases.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a composite intumescent flame retardant for polypropylene. Background technique [0002] As a general-purpose polymer material with excellent performance, polypropylene (PP) has the advantages of light weight, easy processing, non-toxicity, high impact strength, bending resistance and good point insulation performance. Electrical appliances, electronics, packaging and building materials and furniture have been widely used. One of the biggest shortcomings of PP is its flammability. Its limiting oxygen index (LOI) is only about 18%. field of application. Intumescent flame retardant is a new type of composite flame retardant that has been widely concerned in the field of flame retardant in my country in recent years. It has a unique flame-retardant mechanism and the characteristics of halogen-free, low-smoke, and low-toxicity, and is an important way for flame retar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/06C08K9/02C08K7/22C08K5/521C08K7/26C08K9/06C08K3/34C08K7/24C08K3/32C08K5/3492C08K3/22
Inventor 冯厚军
Owner 大禹节水(天津)有限公司
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