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Acrylic acid grafted polypropylene modified aluminium hydroxide/polypropylene flameretardant material and preparing process thereof

A technology of aluminum hydroxide flame retardant and acrylic acid grafting, which is applied in the direction of fireproof coatings, etc., can solve the problems of poor thermal stability and weak interaction, and achieve the effects of improved fluidity, increased oxygen index, and improved melt index

Inactive Publication Date: 2003-03-12
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the short organic chain of the organic coupling agent, the interaction with the macromolecular chain of the polypropylene matrix is ​​weak
Secondly, the organic coupling agent has the problem of poor thermal stability during the processing of flame retardant materials
Therefore, there is a limit to the improvement of mechanical properties of aluminum hydroxide / polypropylene flame retardant composites treated with organic low molecular coupling agents.

Method used

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Examples

Experimental program
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Embodiment Construction

[0031] The present invention will be further described below by specific examples.

[0032] The composition ratio and physical and mechanical properties of the flame retardant materials of the various embodiments of the present invention are shown in Table 2 and Table 3. Among them, the grafting rate of the acrylic acid grafted polypropylene modifier used in Examples 1-4 was 0.15%, and the grafted rate of the acrylic acid grafted polypropylene modifier used in Examples 5-8 was 0.56%. The stabilizer used in each embodiment is polypropylene universal antioxidant 1010.

[0033] The preparation method of each embodiment is as described above in the Summary of the Invention.

[0034] Table 1 shows the properties of the polypropylene raw materials used in each example.

[0035] Melt Index

[0036]

[0037]

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PUM

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Abstract

A modified flame-retarding aluminium hydroxide / polypropylene material is prepared from polypropylene as basic material, aluminium hydroxide as flame-retarding agent, acrylic acid grafted polypropylene as modifier and universal stabilizer for PP materials through high-speed mixing and extrudnig out in dual-screw extruder. Its advantages are high fusion index, flame retarding performance and bend strength, and improved flowability.

Description

technical field [0001] The invention belongs to the technical field of polymer flame retardant materials, and in particular relates to an acrylic acid grafted polypropylene modified aluminum hydroxide / polypropylene flame retardant material and a manufacturing method thereof. Background technique [0002] As an environmentally friendly flame retardant for polyolefins, aluminum hydroxide has the functions of flame retardancy, smoke elimination and filling, but to achieve effective flame retardancy, the weight of aluminum hydroxide must usually reach more than 40%. Due to the poor compatibility between aluminum hydroxide and polypropylene, the addition of a high amount of aluminum hydroxide usually significantly reduces the mechanical properties of polypropylene materials, and there is a problem of imbalance between flame retardant function and mechanical properties. Although the surface treatment of aluminum hydroxide with traditional organic lo...

Claims

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Application Information

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IPC IPC(8): C08K3/22C08L23/12C09K21/14
Inventor 麦堪成李政军曾汉民
Owner SUN YAT SEN UNIV
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