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PP corrugated pipe modified by ethylene propylene rubber (EPR)

A technology of ethylene-propylene rubber and corrugated pipes, which is applied in the direction of hoses, pipes, pipes/pipe joints/fittings, etc., can solve the problems of PP corrugated pipes in terms of unnotched impact strength, elongation at break, tensile strength and melt flow properties. Very good, ring stiffness does not meet the standard requirements, waste of social resources and other issues, to achieve considerable economic value, good plasticizing effect, and improve the quality of finished products

Inactive Publication Date: 2016-08-17
TAIZHOU YAMEIYUHE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large number of concrete pipes and cast iron pipes are replaced, but the ring stiffness of the existing PP corrugated pipe products does not meet the standard requirements, resulting in project rework, delays in the construction period and other accidents, which seriously waste social resources, and the PP corrugated pipe has no gap impact Strength, elongation at break, tensile strength and melt flow properties are not very good

Method used

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Examples

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Embodiment Construction

[0012] The following specific embodiments describe the present invention in further detail.

[0013] A PP corrugated pipe modified by ethylene-propylene rubber EPR, the PP corrugated pipe modified by ethylene-propylene rubber EPR includes an outer wall pipe and an inner wall pipe, and the outer wall pipe is composed of the following raw materials according to the mass ratio:

[0014] Polypropylene resin: 40-60 parts, nano-calcium carbonate: 20-30 parts, ethylene-propylene rubber EPR composite modifier: 10-15 parts, dyeing agent: 1-3 parts, defoamer: 1-3 parts;

[0015] The inner wall pipe is composed of the following raw materials according to the mass ratio:

[0016] Polypropylene resin: 40-60 parts, nano-calcium carbonate: 20-30 parts, ethylene-propylene rubber EPR composite modifier: 10-15 parts, dyeing agent: 1-3 parts, defoamer: 1-3 parts;

[0017] The melt index MFR of the polypropylene resin of the outer wall pipe at a temperature of 0-65°C is: 0.1-0.3 g / 10min; the mel...

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Abstract

The invention discloses a PP corrugated pipe modified by ethylene propylene rubber (EPR). The PP corrugated pipe modified by the ethylene propylene rubber (EPR) comprises an outer wall pipe body and an inner wall pipe body, and the outer wall pipe body is composed of, by mass, 40-60 parts of polypropylene resin, 20-30 parts of nano calcium carbonate, 10-15 parts of ethylene propylene rubber (EPR) compound modifier, 1-3 parts of a colouring agent and 1-3 parts of a defoaming agent; the inner wall pipe body is composed of, by mass, 40-60 parts of polypropylene resin, 20-30 parts of nano calcium carbonate, 10-15 parts of ethylene propylene rubber (EPR) compound modifier, 1-3 parts of the colouring agent and 1-3 parts of the defoaming agent. By means of the PP corrugated pipe modified by the ethylene propylene rubber (EPR), low-temperature brittleness of the PP corrugated pipe can be lowered, toughness of an FRPP corrugated pipe in a low-temperature environment is improved, and non-notched impact strength, elongation at break and melt flowability of the PP corrugated pipe are all remarkably improved.

Description

technical field [0001] The invention relates to the technical field of corrugated pipes, in particular to a PP corrugated pipe modified by EPR of ethylene-propylene rubber. Background technique [0002] PP corrugated pipe is a new type of lightweight pipe made of high-density polyethylene. It has the characteristics of light weight, high pressure resistance, good toughness, fast construction, and long life. Its excellent pipe wall structure design is different from other structural pipes. In comparison, the cost is greatly reduced. And because the connection is convenient and reliable, it is widely used at home and abroad. A large number of concrete pipes and cast iron pipes are replaced, but the ring stiffness of the existing PP corrugated pipe products does not meet the standard requirements, resulting in project rework, delays in the construction period and other accidents, which seriously waste social resources, and the PP corrugated pipe has no gap impact Tensile stre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/16C08K3/22F16L11/11
CPCC08L23/12C08K2201/003C08K2201/011C08L2203/18C08L2310/00F16L11/11C08L23/16C08K2003/265
Inventor 詹小东李志明
Owner TAIZHOU YAMEIYUHE NEW MATERIAL
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