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Enhanced HDPE double-wall corrugated pipe and preparation method thereof

A double-wall corrugated pipe and formula technology, applied in the field of plastic pipes, can solve the problems of poor pipe ring stiffness and creep resistance, affecting product service life, poor low-temperature impact performance, etc., to achieve high ring stiffness, prolong service life, The effect of strong creep resistance

Active Publication Date: 2015-02-25
HENAN LIANSU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The U-PVC double-wall corrugated pipes used in drainage and sewage pipes in my country have the advantages of good rigidity and low price; however, they also have the disadvantage of poor low-temperature impact performance, and are very easy to be damaged especially during construction in northern winter
The HDPE double-wall corrugated pipe has obvious advantages in low temperature toughness, but due to the characteristics of PE material, its rigidity is worse than that of cement pipe, and the ring stiffness and creep resistance of the pipe are worse than that of PVC corrugated pipe. During long-term use, it is easy to Deformed by gravity, affecting the service life of the product
[0003] Reinforced HDPE double-wall corrugated pipes with low temperature toughness, rigidity, ring stiffness and creep resistance are rarely involved in the prior art; therefore, it is of great significance to develop a reinforced HDPE double-wall corrugated pipe

Method used

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  • Enhanced HDPE double-wall corrugated pipe and preparation method thereof

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Effect test

Embodiment 1

[0022] A reinforced HDPE double-wall corrugated pipe, the formulation of the HDPE double-wall corrugated pipe consists of the following raw materials in parts by weight:

[0023] Polyethylene PN049 100 parts;

[0024] 40 parts of wood flour;

[0025] 1 part of titanate coupling agent;

[0026] 7 parts of EPDM rubber;

[0027] Wherein, the mesh number of the wood powder is 80 mesh; the Mooney value of the EPDM rubber is 70, and the ethylene-propylene ratio is 57:43;

[0028] The preparation method of described HDPE double-wall bellows comprises the steps:

[0029] Dry the wood powder at 120°C for 3 hours in a special drying production line to keep its moisture content below 300mg / kg. After cooling to room temperature, mix it with a titanate coupling agent, heat it to 60°C, and heat it at 1100 rpm. Stir and disperse at high speed for 7 minutes, then add EPDM rubber, stir evenly and then cool down automatically; then mix the above compound with polyethylene PN049 evenly, and ...

Embodiment 2

[0031] A reinforced HDPE double-wall corrugated pipe, the formulation of the HDPE double-wall corrugated pipe consists of the following raw materials in parts by weight:

[0032] 100 parts of high-density polyethylene;

[0033] 50 parts of wood powder;

[0034] 2 parts of titanate coupling agent;

[0035] 8 parts of EPDM rubber;

[0036] Wherein, the mesh number of the wood powder is 100 mesh; the Mooney value of the EPDM rubber is 80, and the ethylene-propylene ratio is 60:40;

[0037] The preparation method of described HDPE double-wall bellows comprises the steps:

[0038] Dry the wood powder at 180°C for 1 hour in a special drying production line to make its moisture lower than 300mg / kg, mix it with a titanate coupling agent after cooling to room temperature, heat it to 70°C, and heat it at 800 rpm Stir and disperse at high speed for 5 minutes, then add EPDM rubber, stir evenly and then cool down automatically; then mix the above compound with polyethylene PN049 evenly...

Embodiment 3

[0040] A reinforced HDPE double-wall corrugated pipe, the formulation of the HDPE double-wall corrugated pipe consists of the following raw materials in parts by weight:

[0041] Polyethylene PN049 100 parts;

[0042] 60 parts of wood flour;

[0043] 3 parts of titanate coupling agent;

[0044] 9 parts of EPDM rubber;

[0045] Wherein, the mesh number of the wood flour is 110 mesh; the Mooney value of the EPDM rubber is 90, and the ethylene-propylene ratio is 61:39;

[0046] The preparation method of described HDPE double-wall bellows comprises the steps:

[0047] Dry the wood powder at 160°C for 2 hours in a special drying production line to make its moisture lower than 300mg / kg, mix it with a titanate coupling agent after cooling to room temperature, heat it to 65°C, and dry it at 1000 rpm Stir and disperse at high speed for 6 minutes, then add EPDM rubber, stir evenly and then cool down automatically; then mix the above mixture with polyethylene PN049 evenly, and then t...

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Abstract

The invention relates to an enhanced HDPE double-wall corrugated pipe and a preparation method thereof. According to a formula, the enhanced HDPE double-wall corrugated pipe is composed of the following raw materials in parts by weight: 100 parts of HDPE, 40-60 parts of wood meal, 1-3 parts of titanate coupling agent and 7-9 parts of ethylene-propylene-diene rubber, wherein the particle size of the wood meal is 80-110 meshes; the Mooney point of the ethylene-propylene-diene rubber is 70-90; and the ratio of ethylene to propylene is (55:45)-(65:35). The enhanced HDPE double-wall corrugated pipe prepared by using the preparation method disclosed by the invention is relatively good in low-temperature impact toughness, good in rigidity, high in ring stiffness, excellent in creep resistance, relatively low in cost and wide in application prospect.

Description

technical field [0001] The invention relates to the technical field of plastic pipes, in particular to a reinforced HDPE double-wall corrugated pipe and a preparation method thereof. Background technique [0002] With the sustained and stable high-speed growth of my country's national economy, it provides a good macro environment and broad space for urban infrastructure construction. With my country's increasing emphasis on environmental protection, governments at all levels from the central government to local governments have issued a series of policies and regulations on water conservation, pollution control and environmental protection. Water supply, water saving, drainage and sewage treatment will become the focus of urban municipal construction in the future, which provides market development space for the promotion and application of large-diameter plastic pipes. Because structural wall pipes can save raw materials and reduce costs, structural wall pipes have become ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L97/02C08L23/16C08K5/10
CPCC08L23/06C08L2203/18C08L2205/02C08L2205/03C08L2205/08C08L97/02C08L23/16C08K5/10
Inventor 代营伟李锦松代卫东
Owner HENAN LIANSU IND
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