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Multipurpose and multilayer coextruded plastic composite pipe

A multi-layer co-extrusion, composite pipe technology, applied in the direction of pipes, rigid pipes, layered products, etc., can solve the problem of poor tensile strength, impact strength, poor processing performance, aggravated cost rise and strength reduction, high antistatic cost problem, to achieve the effect of good combustion resistance, low cost and low production cost

Inactive Publication Date: 2005-05-11
生寿斋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a kind of plastic pipe that is directly extruded as a single-layer pipe. This kind of directly extruded antistatic and anti-combustion plastic pipe has high cost, poor tensile strength, impact strength, and poor processing performance. In order to improve performance, other processing aids have to be added. agent, which further exacerbated the increase in cost and the decrease in strength, and in order to compensate for the disadvantages of the decrease in strength, the wall thickness of the pipe had to be increased, which increased the cost of the pipe

Method used

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  • Multipurpose and multilayer coextruded plastic composite pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Pipe diameter: 160 mm, working pressure 0.8 MPa, pipe wall thickness 6.2 mm, core layer thickness 3.2 mm, outer skin layer and inner skin layer thickness 1.5 mm.

[0040] The composition of the cortex material is as follows:

[0041] 100 parts of PVC and ABS (1:1) blended, 0.1 part of oxidized polyethylene wax, 2 parts of compound stabilizer, 0.2 part of stearic acid, 0.5 part of calcium stearate, 1 part of decabromodiphenyl ether, chlorinated polystyrene 2 parts of ethylene, 3 parts of acrylate polymer, 16 parts of acetylene carbon black, 3 parts of calcium carbonate.

[0042] The composition of the core material is as follows:

[0043] 100 parts of polyvinyl chloride, 0.1 part of oxidized polyethylene wax, 2.5 parts of compound stabilizer, 0.3 part of stearic acid, 0.5 part of calcium stearate, 1 part of decabromodiphenyl ether, 3 parts of chlorinated polyethylene,

[0044] Acrylic polymer (ACR) 6 parts, talcum powder or calcium carbonate 15 parts.

[0045] Chlorinat...

Embodiment 2

[0047] The pipe diameter is 160 mm, the working pressure is 1.0 MPa, the pipe wall thickness is 7.7 mm, the core layer is 4.7 mm thick, and the inner and outer skin layers are 1.5 mm thick.

[0048] The composition of the cortex material is as follows:

[0049] 100 parts of polyvinyl chloride and ABS (1:0.5) resin blend, 0.5 parts of oxidized polyethylene wax, 4.5 parts of composite stabilizer, 1 part of stearic acid, 1.5 parts of calcium stearate, 3 parts of decabromodiphenyl ether, 5 parts of chlorinated polyethylene, 10 parts of acrylate polymer, 12 parts of conductive carbon black.

[0050] The composition of the core material is as follows:

[0051] 100 parts of polyvinyl chloride, 0.3 parts of oxidized polyethylene wax, 5 parts of compound stabilizer, 1 part of stearic acid, 1.2 parts of calcium stearate, 3 parts of decabromodiphenyl ether, 6 parts of chlorinated polyethylene, acrylates Polymer (ACR) 11 parts, talcum powder or calcium carbonate 30 parts.

Embodiment 3

[0053] The pipe diameter is 160 mm, the working pressure is 1.25 MPa, the pipe wall thickness is 9.5 mm, the core layer is 6.5 mm thick, and the inner and outer skin layers are 1.5 mm thick.

[0054] The composition of the cortex material is as follows:

[0055] 100 parts of polyvinyl chloride, 1 part of oxidized polyethylene wax, 7 parts of compound stabilizer, 2 parts of stearic acid, 2.5 parts of calcium stearate, 5 parts of decabromodiphenyl ether, 10 parts of chlorinated polyethylene, acrylate polymerization 15 parts, graphite powder 30 parts, talcum powder 10 parts.

[0056] The composition of the core material is as follows:

[0057] 100 parts of polyvinyl chloride, 0.5 parts of oxidized polyethylene wax, 7 parts of compound stabilizer, 2 parts of stearic acid, 2.5 parts of calcium stearate, 6 parts of decabromodiphenyl ether, 10 parts of chlorinated polyethylene, acrylates 15 parts of polymer, 40 parts of talcum powder.

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Abstract

A multipurposed composite multi-layer plastic pipe used in mine or oil field for delivering gas, air, water oil, etc. or as the rollers of belt conveyer features that its pipe wall is composed of a core layer and two surficial layers. Said surficial layer contains 10 components including polyvinyl chloride, polyvinyl oxide composite stabilizer, stearic acid, etc. Said core layer contains 8 components including polyvinyl chloride, low-molecular polyethene, composite stabilizer, calcium stearate, etc.

Description

(1) Technical field [0001] The invention relates to a pipe used for the transportation of natural gas and coal gas, the drainage, ventilation and gas drainage of coal mines and other mines, the transportation of various liquid oils in oil fields, and the production of the roller body of the belt conveyor roller . It is required to have certain mechanical and physical properties, as well as flame retardant and antistatic properties, specifically a multi-purpose multi-layer co-extruded plastic composite pipe. (2) Background technology [0002] At present: the transportation of natural gas and coal gas, the drainage, ventilation and drainage of coal mines and other mines, the transportation of various liquid oils in oil fields, and the pipes used for making belt conveyor rollers, most of them are made of metal. As a result, this kind of pipe needs to be painted when it is used, and it is not corrosion-resistant, heavy, and inconvenient to install. Especially when it is used in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B1/08C08K5/10C08L27/06F16L9/133
Inventor 生寿斋
Owner 生寿斋
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