Compound additive for polypropylene random copolymer tubular product

A technology of polypropylene pipes and composite additives, applied in the field of polymer material additives, which can solve the problems of product surface roughness, swelling, and affecting the long-term performance of PPR pipes, so as to improve surface flatness and smoothness, and improve hot water resistance Erosion performance and the effect of maintaining long-term weather resistance

Active Publication Date: 2018-05-08
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

PPR pipes are used for long-term transportation of hot and cold water, so there are high requirements for thermal stability, hot water extraction resistance and long-term performance of materials, and the use of ordinary antioxidants will affect the long-term performance of PPR pipes; PPR pipes Due to the high molecular weight, poor processability and low production efficiency of the material, it is prone to swelling, accumulation of material on the touch head, rough surface of the product, etc.

Method used

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  • Compound additive for polypropylene random copolymer tubular product

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Effect test

Embodiment 1

[0023] An embodiment of the composite additive for random copolymerized polypropylene pipes of the present invention, the composite additive for random copolymerized polypropylene pipes described in this embodiment includes the following components in parts by weight: 20 parts of processing aids, long-acting anti- 20 parts of oxygen agent, 40 parts of antioxidant and 20 parts of stearate.

[0024] Wherein, the processing aid is a mixture of fluorine-containing rubber polymer and oxidized polyethylene wax, and the weight ratio of the fluorine-containing rubber polymer and oxidized polyethylene wax is: fluorine-containing rubber polymer: oxidized polyethylene wax= 2:1; the long-acting antioxidant is 1,3,5-trimethyl-2,4,6-(3,5-di-tert-butyl-4-hydroxybenzyl)benzene; the antioxidant It is a mixture of tris[2.4-di-tert-butylphenyl]phosphite and tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate]pentaerythritol ester, the tris[2.4- The weight ratio of di-tert-butylphenyl] pho...

Embodiment 2

[0029] An embodiment of the composite additive for random copolymerized polypropylene pipes of the present invention, the composite additive for random copolymerized polypropylene pipes described in this embodiment includes the following components in parts by weight: 20 parts of processing aids, long-acting anti- 30 parts of oxygen agent, 40 parts of antioxidant and 10 parts of stearate.

[0030] Wherein, the processing aid is a mixture of fluorine-containing rubber polymer and oxidized polyethylene wax, and the weight ratio of the fluorine-containing rubber polymer and oxidized polyethylene wax is: fluorine-containing rubber polymer: oxidized polyethylene wax= 1:1; the long-acting antioxidant is 1,3,5-trimethyl-2,4,6-(3,5-di-tert-butyl-4-hydroxybenzyl)benzene; the antioxidant It is a mixture of tris[2.4-di-tert-butylphenyl]phosphite and tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate]pentaerythritol ester, the tris[2.4- The weight ratio of di-tert-butylphenyl] pho...

Embodiment 3

[0033]An embodiment of the composite additive for random copolymerized polypropylene pipes in the present invention, the composite additive for random copolymerized polypropylene pipes in this embodiment contains the following components in parts by weight: 10 parts of processing aids, long-acting anti- 10 parts of oxygen agent, 60 parts of antioxidant and 20 parts of stearate.

[0034] Wherein, the processing aid is a mixture of fluorine-containing rubber polymer and oxidized polyethylene wax, and the weight ratio of the fluorine-containing rubber polymer and oxidized polyethylene wax is: fluorine-containing rubber polymer: oxidized polyethylene wax= 1:2; the long-acting antioxidant is 1,3,5-trimethyl-2,4,6-(3,5-di-tert-butyl-4-hydroxybenzyl)benzene; the antioxidant It is a mixture of tris[2.4-di-tert-butylphenyl]phosphite and tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate]pentaerythritol ester, the tris[2.4- The weight ratio of di-tert-butylphenyl] phosphite and ...

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Abstract

The invention discloses a compound additive for a polypropylene random copolymer tubular product. The compound additive is prepared from the following components in parts by weight: 10 to 20 parts ofa processing auxiliary agent, 10 to 30 parts of a long-acting antioxidant, 40 to 60 parts of an antioxidant and 10 to 30 parts of stearate. According to the compound additive for the polypropylene random copolymer tubular product, disclosed by the invention, the processing auxiliary agent is added so that the processing performance of materials is easy to improve; the surface evenness and smoothness of a product are improved and the abrasion of equipment is reduced; the long-acting antioxidant is added so that the hot water washing resisting performance of the product is improved and the long-period weather resisting performance of the product is kept; properties including the melt index, the tensile yield strength, the impact strength of a simply supported notch beam, the bending modulus,the load deformation temperature, the Rockwell hardness and the like of the materials are effectively improved.

Description

technical field [0001] The invention relates to a polymer material additive, in particular to a composite additive for random copolymerized polypropylene pipes. Background technique [0002] Random copolymer polypropylene pipe (PPR pipe) is a new generation of energy-saving and environmentally friendly plastic pipe developed in the 1990s. It has light weight, excellent impact resistance, long-term creep resistance, pressure resistance, heat resistance, and chemical resistance. Corrosion and other advantages, the most suitable temperature is 10 ~ 70 ℃. PPR pipes are used for long-term transportation of hot and cold water, so there are high requirements for thermal stability, hot water extraction resistance and long-term performance of materials, and the use of ordinary antioxidants will affect the long-term performance of PPR pipes; PPR pipes Due to the large molecular weight, poor processability and low production efficiency of the material, it is prone to swelling, materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/30C08L27/12C08K13/02C08K5/13C08K5/134C08K5/526C08K5/098
CPCC08L23/14C08L2201/08C08L2203/18C08L23/30C08L27/12C08K13/02C08K5/13C08K5/1345C08K5/526C08K5/098
Inventor 张官云吴俊杰江咏梅
Owner 广州赫尔普化工有限公司
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