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Preparation of halogenless fire-retardant polyolefine granular material

A kind of flame-retardant and granular technology, which is applied in the field of preparation of halogen-free flame-retardant polyolefin materials, can solve the problems of polyolefin toughness decline, etc., and achieve good flame-retardant and mechanical properties, good industrial prospects, and low cost. Effect

Inactive Publication Date: 2004-12-22
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem that the toughness of polyolefins is greatly reduced due to a large amount of filled inorganic flame retardants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: Preparation of aluminum hydroxide flame-retardant polyethylene pellets

[0029] The weight ratio of ingredients is: polyethylene to aluminum hydroxide is 1:1.5; aluminum hydroxide to titanate coupling agent is 1:0.06; aluminum hydroxide to silicone oil is 1:0.05. The main technical indicators of the polyethylene pellets prepared by this formula can meet the following requirements: tensile yield strength > 10MPa; elongation at break > 150%; oxygen index > 33°C.

Embodiment 2

[0030] Embodiment 2: Preparation of magnesium hydroxide flame-retardant polyethylene pellets

[0031] The weight ratio of ingredients is: polyethylene to magnesium hydroxide is 1:1.5; magnesium hydroxide to titanate coupling agent is 1:0.06; magnesium hydroxide to silicone oil is 1:0.07. The main technical indicators of the polyethylene pellets prepared by the formula can meet the following requirements: tensile yield strength>10MPa; elongation at break>150%; oxygen index>34.

Embodiment 3

[0032] Embodiment 3: Preparation of magnesium hydroxide flame-retardant polypropylene pellets

[0033] The weight ratio of ingredients is: polypropylene to magnesium hydroxide is 1:1.5; magnesium hydroxide to titanate coupling agent is 1:0.06; magnesium hydroxide to silicone oil is 1:0.06. The main technical indicators of the polypropylene pellets prepared by this formula can meet the following requirements: tensile yield strength>15MPa; elongation at break>100%; oxygen index>33.

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Abstract

The preparation method of halogen-less fire-retardant type polyolefine granular material is characterized by that said granular material is made up by adding fire-retardant aluminium hydroxide or magnesium hydroxide treated by surfactant and mechanical property modifying agent silicone oil in polyethylene or polypropylene. Said granular material not only possesses good fire-retardant property, but also possesses good toughness, and its extensibility at break is greater than 200%. Said granular material is specially used in the fields of electric wire and cable, indoor decoration and car, etc.

Description

Technical field: [0001] The invention relates to the preparation of a halogen-free flame-retardant polyolefin material. technical background: [0002] Polyolefin materials are easily flammable, which limits their applications. Traditionally, polyolefin materials have been flame-retardant using halogen-containing flame retardants, which release large amounts of hydrogen halide gas when burned. This will cause great damage to the environment, equipment and personal safety. Therefore, their application is more and more limited, and it is desired to replace them with clean flame retardants. Magnesium hydroxide and aluminum hydroxide are two important inorganic flame retardants, which are clean flame retardants with filling, flame retardancy and smoke elimination. However, to obtain a satisfactory flame retardant effect, a large amount of such flame retardants must be filled, which leads to a significant reduction in the mechanical properties of the material, especially the to...

Claims

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Application Information

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IPC IPC(8): C08F2/44C08F10/02
Inventor 杨金海张勇张隐西王艳丽黄华彭宗林朱松金江键
Owner SHANGHAI JIAO TONG UNIV
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