Compound additive for high-light, heat-resisting and low-shrinkage polypropylene

A composite additive, polypropylene technology, applied in the field of composite additives, can solve the problems of reduced performance, increased specific gravity, reduced processing performance, etc., to achieve the effects of reduced shrinkage, large shrinkage, and improved gloss

Active Publication Date: 2018-04-06
广州赫尔普化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-gloss and heat-resistant polypropylene requires further improvement of its gloss and heat resistance. In order to ensure the stability of product installation size, the installation requirements are more precise. The shrinkage rate of high-gloss and h

Method used

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  • Compound additive for high-light, heat-resisting and low-shrinkage polypropylene
  • Compound additive for high-light, heat-resisting and low-shrinkage polypropylene

Examples

Experimental program
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Example Embodiment

[0025] Example 1

[0026] An embodiment of the composite additive for high-light, heat-resistant and low-shrinkage polypropylene described in the present invention, the composite additive for high-light, heat-resistant and low-shrinkage polypropylene described in this embodiment comprises the following components by weight: 5 parts of silicide, 10 parts of nucleating agent, 15 parts of sodium benzoate, 15 parts of antioxidant, 15 parts of calcium stearate, 20 parts of high-temperature lubricant and 800 parts of superfine talcum powder.

[0027] Wherein, the silicide is silicon dioxide, and the nucleating agent is a mixture of dibenzylidene xylitol and 1,3:2,4-di(p-methylbenzylidene) sorbitol; the dibenzylidene The weight ratio of benzyl xylitol and 1,3:2,4-bis(p-methylbenzylidene)sorbitol is dibenzylidene xylitol:1,3:2,4-bis(p-methylbenzylidene) Benzylidene) sorbitol=1:1; The antioxidant is three [2.4-di-tert-butylphenyl] phosphite and tetrakis [β-(3,5-di-tert-butyl-4-hydroxy...

Example Embodiment

[0028] Example 2

[0029] An embodiment of the composite additive for high-light, heat-resistant and low-shrinkage polypropylene described in the present invention, the composite additive for high-light, heat-resistant and low-shrinkage polypropylene described in this embodiment comprises the following components by weight: 5 parts of silicide, 10 parts of nucleating agent, 15 parts of sodium benzoate, 15 parts of antioxidant, 15 parts of calcium stearate, 20 parts of high-temperature lubricant and 800 parts of superfine talcum powder.

[0030] Wherein, the silicide is silicon dioxide, the nucleating agent is a mixture of dibenzylidene xylitol and aryl carboxylic acid metal salt; the antioxidant is tris[2.4-di-tert-butylphenyl] Phosphate ester; the high-temperature lubricant is pentaerythritol stearate.

Example Embodiment

[0031] Example 3

[0032] An embodiment of the composite additive for high-light, heat-resistant and low-shrinkage polypropylene described in the present invention, the composite additive for high-light, heat-resistant and low-shrinkage polypropylene described in this embodiment comprises the following components by weight: 5 parts of silicide, 15 parts of nucleating agent, 10 parts of sodium benzoate, 15 parts of antioxidant, 15 parts of calcium stearate and 20 parts of high temperature lubricant.

[0033] Wherein, the silicide is silicon dioxide, a mixture of the nucleating agent aromatic amine compound and dibenzylidene xylitol; the antioxidant is tetrakis[β-(3,5-di-tert-butyl -4-hydroxyphenyl) propionate] pentaerythritol ester; the high-temperature lubricant is pentaerythritol stearate.

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Abstract

The invention discloses a compound additive for high-light, heat-resisting and low-shrinkage polypropylene (PP). The compound additive is prepared from the following components in parts by weight: 5 to 10 parts of silicide, 8 to 20 parts of a nucleating agent, 5 to 15 parts of sodium benzoate, 10 to 20 parts of an antioxidant, 10 to 20 parts of calcium stearate, 15 to 25 parts of a high-temperature lubricant and 0 to 1000 parts of ultrafine talcum powder. The PP has the characteristics of low density and high processability when being compared with PC (Polycarbonate), PS (Polystyrene) and ABS(Acrylonitrile Butadiene Styrene); the polypropylene has slightly low heat resistance and large shrinkage ratio when being used in small domestic appliances; after the compound additive for the high-light, heat-resisting and low-shrinkage polypropylene is added, the heat resistance and the glossiness of a product are greatly improved and the shrinkage rate is reduced; other physical and mechanicalproperties are improved to different degrees; the compound additive is widely applied to the field of the small domestic appliances; compared with other engineering plastics, the product has the advantages of low cost, simple processing technology and abundant selectable raw materials.

Description

technical field [0001] The invention relates to a polymer material additive, in particular to a composite additive for high-light, heat-resistant and low-shrinkage polypropylene. Background technique [0002] Polypropylene (PP) translucent colorless solid, odorless and non-toxic. The structure is regular and easy to crystallize, the melting point is as high as 167 ° C, heat-resistant, corrosion-resistant, low density, and is the lightest general-purpose plastic. However, the low temperature impact resistance is poor, the shrinkage rate is large, and it is easy to age. By adding this patented compound additive, the crystallinity and crystal form of the product can be improved, the surface gloss and heat resistance temperature of the product can be effectively improved, and the heat shrinkage rate of the product is significantly reduced. Instead of engineering plastics such as PS, ABS, and PC, it is widely used in household appliances, such as rice cooker shells, electric ket...

Claims

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Application Information

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IPC IPC(8): C08K13/02C08K3/36C08K5/053C08K5/1575C08K5/526C08K5/134C08K5/103C08K5/098C08K3/34C08L23/12
CPCC08K3/34C08K3/36C08K5/053C08K5/098C08K5/103C08K5/1345C08K5/1575C08K5/526C08K13/02C08K2201/003C08K2201/011C08K2201/014C08L23/12
Inventor 吴俊杰张官云陈国伟肖兴
Owner 广州赫尔普化工有限公司
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