Two-layer co-extruding plastic drainage pipe and preparation method thereof

A double-layer co-extrusion and drainage pipe technology, which is applied in the direction of pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve the problems of easy aging of rainwater pipes, high pipe cost, and inconvenient installation, and achieve light weight and reduce overall weight , low cost effect

Inactive Publication Date: 2011-07-20
GUANGDONG LIANSU TECH INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are also disadvantages: the inner layer of PVC is composed of polyvinyl chloride, chlorinated polyethylene, calcium stearate, titanium dioxide and other materials, the cost of the pipeline is high, and the weight is heavy and the installation is inconvenient
On the one hand, this composite pipe cannot solve the problem of easy aging of existing rainwater pipes, and also has the problems of heavy weight and high cost; on the other hand, the components of this composite pipe are designed for the above special occasions , not suitable for use as a general drainage pipe

Method used

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  • Two-layer co-extruding plastic drainage pipe and preparation method thereof
  • Two-layer co-extruding plastic drainage pipe and preparation method thereof
  • Two-layer co-extruding plastic drainage pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: D75 specification (outer diameter is 75mm)

[0024] The formula is as follows:

[0025] Outer layer: ASA or PMMA (green)

[0026] Inner layer: polyvinyl chloride resin (PVC SG-5) 100, composite stabilizer (Bear 318) 3.5, impact modifier (CPE) 3, stearic acid 0.2, calcium stearate 0.2, AC foaming agent 0.4, foam regulator ZB5304, calcium carbonate 10, PE wax 0.4, lead stearate 0.3

[0027] Extrusion process settings:

[0028] Outer layer (ASA or PMMA layer):

[0029]

[0030] inner layer:

[0031]

Embodiment 2

[0032] Embodiment 2: D110 specification (outer diameter is 110mm)

[0033] The formula is as follows:

[0034] Outer layer: ASA or PMMA (blue)

[0035] Inner layer: polyvinyl chloride resin (PVC SG-5) 100, compound stabilizer (Bear brand 318) 3.8, impact modifier (CPE) 4, stearic acid 0.3, calcium stearate 0.3, AC foaming agent 0.5, foam regulator ZB5305, calcium carbonate 15, PE wax 0.5, lead stearate 0.6

[0036] Outer layer (ASA or PMMA layer):

[0037]

[0038] inner layer:

[0039]

Embodiment 3

[0040] Embodiment three: D200 specification (outer diameter is 200mm)

[0041] The formula is as follows:

[0042] Outer layer: ASA or PMMA (red)

[0043] Inner layer: polyvinyl chloride resin (PVC SG-5) 100, composite stabilizer (Bear 318) 4.5, impact modifier (CPE) 6, stearic acid 0.5, calcium stearate 0.6, AC foaming agent 0.6, foam regulator ZB5308, calcium carbonate 30, PE wax 0.8, lead stearate 0.8

[0044] Extrusion process settings:

[0045] Outer layer (ASA or PMMA layer):

[0046]

[0047] inner layer:

[0048]

[0049]

[0050] The outer layer of the drainpipe obtained through the above three embodiments is an anti-aging layer, which can solve the problem of aging resistance. The inner layer adopts the foaming process formula, which can not only reduce the overall weight, improve the impact resistance of the pipe, have the effect of sound insulation, but also reduce the cost of the drain pipe.

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Abstract

The invention relates to the plastic pipe field, in particular to a two-layer co-extruding plastic drainage pipe used outdoors. The drainage pipe contains an inner layer and an anti-aging outer layer, wherein the inner layer comprises the following components in parts by weight: 90-110 parts of polyvinyl chloride resin, 3.5-4.8 parts of composite stabilizer, 3-8 parts of impact modifier, 0.2-0.5 part of stearic acid, 0.2-0.6 part of calcium stearate, 0.3-0.6 part of AC foaming agent, 4-8 parts of foaming regulator ZB530, 5-40 parts of calcium carbonate, 0.4-1.0 part of polyethylene (PE) wax and 0.3-0.8 part of lead stearate. The outer layer of the drainage pipe is the anti-aging layer, thus the aging resistant problem can be solved. The inner layer adopts the foaming technology, thus the overall weight of the drainage pipe can be reduced, the impact resistance of the pipe can be increased, the pipe has the effect of sound insulation and the cost of the drainage pipe can be reduced. In addition, the invention also discloses a preparation method of the two-layer co-extruding plastic drainage pipe.

Description

technical field [0001] The invention relates to the field of plastic pipes, in particular to a double-layer co-extruded plastic drainage pipe for outdoor use and a manufacturing method thereof. Background technique [0002] As a branch of the water delivery field, drainage pipes are getting more and more attention today when residential buildings, municipal engineering, agriculture, gardens and other industries are becoming more and more prosperous. For a long time, the installation of drainage pipes, especially some middle and low-grade buildings, has been exposed, and some of them are also used together with rainwater pipes. These surface-mounted pipes have been exposed to the sun for a long time, and their aging resistance has been greatly tested. Moreover, the surface-mounted pipes are vulnerable to external impacts, such as knocking, impact or even extrusion. The traditional method is to add anti-aging agents to PVC drainage pipes and increase the ring stiffness of PV...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/02C08K5/098C08K3/26C08J9/10F16L9/133
Inventor 陈涛文巍伟
Owner GUANGDONG LIANSU TECH INDAL
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