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HDPE (high-density polyethylene) double-wall corrugated pipe with high ring stiffness

A technology of double-wall bellows and rigidity, applied in the direction of slender components, building components, etc., can solve the problems of low ring stiffness that cannot become the mainstream of the market, and achieve the effect of good processing performance and improved ring stiffness

Inactive Publication Date: 2012-11-21
SINOMACH GENERAL MACHINERY SCIENCE & TECHNOLOGY CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] At present, the ring stiffness of ordinary HDPE double-wall corrugated pipes on the market is generally 4KN / M 2 , 8KN / M 2 , that is, SN4 and SN8 pipes on the market have low ring stiffness and can only meet general engineering needs. Although PP high-rigidity pipes have appeared in relevant reports in recent years, due to processing equipment, raw materials and other reasons, they have not been able to become market favorites. Mainstream, in order to meet the market demand, our company introduces new main and auxiliary materials according to the existing equipment, optimizes the design formula, and produces 12.5KN / M 2 ,16KN / M 2 Equal high rigidity series of pipes to meet the current needs of special projects for pipe performance

Method used

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Embodiment 1

[0035] Embodiment 1: HDPE double-wall bellows of high ring stiffness, it comprises the raw material of following weight ratio:

[0036] HDPE 48

[0037] High modulus PP 18

[0038] Attapulgite 4

[0039] HDPE reinforced masterbatch 18

[0040] HDPE toughened masterbatch 24

[0041] Polyester modified acrylic resin 45

[0042] Silicone modified acrylic resin 2

[0043] ABS high rubber powder 5

[0044] Acrylic Impact Modifier ACR 2

[0045] Color masterbatch 4.

[0046] The preparation process of the high ring stiffness HDPE double-wall corrugated pipe of the present invention is as follows:

[0047] (1) Mixing: Pour high-density polyethylene, high modulus PP and other raw materials into the mixer according to the above ratio, mix the materials evenly, and transport them to the extruder through negative pressure;

[0048] (2) Plasticizing extrusion: the mixed material is heated, sheared, plasticized and extruded by the barrel and screw;

[0049] (3) Mold forming: the ...

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Abstract

The invention discloses an HDPE (high-density polyethylene) double-wall corrugated pipe with high ring stiffness. The HDPE double-wall corrugated pipe comprises the following raw materials in parts by weight: 47 to 49 parts of high-density polyethylene, 17 to 19 parts of high modulus propene polymer (PP), 3 to 5 parts of attapulgite, rigidity-reinforcing and tenacity-reinforcing master batch and the like. Due to the adoption of the formula of the HDPE double-wall corrugated pipe, the ring stiffness of the HDPE double-wall corrugated pipe can be greatly improved; due to the adoption of the attapulgite in the formula, the HDPE double-wall corrugated pipe has high water absorptivity and slurry making property; and due to the adoption of modified acrylic resin which has certain cohesiveness, the machining property is high.

Description

Technical field [0001] The present invention relates to the technical field of corrugated pipe preparation, and is mainly a high ring stiffness HDPE double-wall corrugated pipe, mainly aimed at improving the ring stiffness of the current domestic HDPE double-wall corrugated pipes. Background technique [0002] At present, the ring stiffness of ordinary HDPE double-wall corrugated pipes on the market is generally 4KN / M. 2 ,8KN / M 2 , that is, SN4 and SN8 pipes on the market have low ring stiffness and can only meet general engineering needs. Although PP high-stiffness pipes have appeared in relevant reports in recent years, they have not been able to become popular in the market due to processing equipment, raw materials and other reasons. Mainstream, in order to adapt to market demand, our company introduced new primary and auxiliary materials based on existing equipment, optimized the design formula, and produced 12.5KN / M 2 ,16KN / M 2 Series of pipes with equal high stiffn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L33/00C08K3/34F16S3/00
Inventor 雍跃吴文利刘雪慧余明锋
Owner SINOMACH GENERAL MACHINERY SCIENCE & TECHNOLOGY CO LTD
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