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A kind of polyethylene resin composition for hot water pipeline and preparation method

A polyethylene resin and hot water pipeline technology, applied in the field of polyethylene modification, can solve the problems of affecting the long-term hydrostatic performance of materials, restricting applications, failing to meet the market needs of floor solar tubes and thermal cycle systems, and achieving good additives Resistance to water extraction, meeting high-speed processing requirements, and excellent long-term hydrostatic strength

Active Publication Date: 2016-06-15
CHINA PETROLEUM & CHEM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the performance of the existing high-temperature-resistant pipes cannot meet the market needs of floor heating, heating connections, heat exchangers, solar tubes and thermal circulation systems
High-density polyethylene material has a high density, but its creep behavior at high temperature limits its application in hot water piping systems
Generally, reducing the density of PE resin can improve the creep resistance of the material, but the decrease in density will affect the long-term hydrostatic performance of the material

Method used

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  • A kind of polyethylene resin composition for hot water pipeline and preparation method
  • A kind of polyethylene resin composition for hot water pipeline and preparation method
  • A kind of polyethylene resin composition for hot water pipeline and preparation method

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Embodiment 1～10

[0025] The proportioning components of the polyethylene resin composition for hot water pipes are shown in Table 1 and Table 2.

[0026] Table 1 Example 1~5 Polyethylene resin composition of hot water pipe (by weight)

[0027]

[0028] Table 2 Example 6-10 Polyethylene resin composition of hot water pipes (by weight)

[0029]

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PUM

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Abstract

The invention discloses a polyethylene resin composition for hot water pipes and a preparation method thereof, belonging to the field of polyethylene modification. It is made of the following components by weight: 100 parts of heat-resistant polyethylene resin, 0.1-0.6 part of antioxidant, 0.05-0.2 part of acid absorbing agent, and 0.01-0.1 part of processing aid. The antioxidant system composed of the antioxidant is a ternary composite system composed of two hindered phenolic antioxidants and a phosphite antioxidant, or a hindered phenolic antioxidant and a A binary compound system used in combination with phosphite antioxidants. The invention is made by a general preparation method, has good high temperature oxidation resistance, water extraction resistance of additives, and excellent long-term hydrostatic strength of pipes under high temperature conditions, and can be used in the production of pipelines for hot water transportation, meeting the requirements of High speed processing requirements.

Description

technical field [0001] A polyethylene resin composition for hot water pipes and a preparation method thereof, belonging to the field of polyethylene modification, in particular to a polyethylene resin composition for hot water pipes and a preparation method. Background technique [0002] At present, the polyolefin pipes used in the construction industry for hot water pipes in buildings mainly include cross-linked polyethylene (PEX) pipes, random copolymerized polypropylene (PPR) pipes, heat-resistant polyethylene (referred to as PE-RT) pipes, Polybutylene (PB) tubing. Due to the unique molecular structure of PE-RT resin, the distribution and quantity of comonomers on the main chain can be controlled through molecular design and polymerization technology to form more tether molecules, so that it has good flexibility of polyethylene, It also has good heat resistance, and its application in floor heating and radiator heating systems is gradually expanding, and it has gradually...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08K13/02C08K5/098C08K3/22C08K5/13C08K5/524
Inventor 唐岩王群涛郭锐王日辉徐素兰王秀丽
Owner CHINA PETROLEUM & CHEM CORP