Core-layer foamed composite tubular product and preparation process thereof

A composite pipe and core layer technology, which is applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of easy damage to the molecular structure of the foamed pipe material of the core layer and the reduction of service life, and achieve the simple and easy operation of the preparation method and the long service life. Long, low energy dissipation effect

Inactive Publication Date: 2016-08-17
潘海云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the carbon black material used in this patent is soaked in mixed acid for a long time, and the residual mixed acid will easily destroy the molecular structure of the core foam pipe, resulting in a significant reduction in its service life.

Method used

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  • Core-layer foamed composite tubular product and preparation process thereof
  • Core-layer foamed composite tubular product and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A core-layer foam composite pipe is composed of three coaxial layers of inner layer material, core layer foam layer and outer layer material;

[0033] The raw materials for preparing the inner layer material and their weight parts include: 50 parts of medium density polyethylene, 5 parts of low density polyethylene, 0.05 part of silicon dioxide passing through a 1500 mesh sieve, 0.05 part of calcium carbonate passing through a 2500 mesh sieve, polyoxyethylene 0.05 parts of ethylene;

[0034] The raw materials and parts by weight for preparing the core foam layer include: 60 parts of ethylene-maleic anhydride graft copolymer, 3 parts of styrene-butadiene rubber, 0.03 part of calcium carbonate, and 0.01 part of molybdenum oxide;

[0035] The raw materials and parts by weight for preparing the outer layer material include: 80 parts of polyvinyl chloride, and 0.5 part of MBS resin.

[0036] The thickness ratio of inner layer material, core foam layer and outer layer materi...

Embodiment 2

[0038] A core-layer foam composite pipe is composed of three coaxial layers of inner layer material, core layer foam layer and outer layer material;

[0039] The raw materials for preparing the inner layer material and parts by weight thereof include: 70 parts of medium density polyethylene, 15 parts of low density polyethylene, 0.15 part of silicon dioxide passing through a 2000 mesh sieve, 0.15 part of calcium carbonate passing through a 3000 mesh sieve, polyoxyethylene 0.15 parts of ethylene;

[0040] The raw materials and parts by weight for preparing the core foam layer include: 80 parts of ethylene-maleic anhydride graft copolymer, 12 parts of styrene-butadiene rubber, 0.09 parts of magnesium carbonate, and 0.01-0.05 parts of samarium oxide;

[0041] The raw materials and parts by weight for preparing the outer layer material include: 100 parts of polyvinyl chloride, and 1.5 parts of MBS resin.

[0042] The thickness ratio of inner layer material, core foam layer and ou...

Embodiment 3

[0044] A core-layer foam composite pipe is composed of three coaxial layers of inner layer material, core layer foam layer and outer layer material;

[0045] The raw materials for preparing the inner layer material and their parts by weight include: 60 parts of medium density polyethylene, 10 parts of low density polyethylene, 0.1 part of silicon dioxide passing through a 1800 mesh sieve, 0.1 part of calcium carbonate passing through a 2700 mesh sieve, polyoxyethylene 0.1 part of ethylene;

[0046] The raw materials and parts by weight for preparing the core foam layer include: 70 parts of ethylene-maleic anhydride graft copolymer, 8 parts of styrene-butadiene rubber, 0.06 part of carbon black, and 0.03 part of cerium oxide;

[0047] The raw materials and parts by weight for preparing the outer layer material include: 90 parts of polyvinyl chloride, and 1.0 part of MBS resin.

[0048] The thickness ratio of inner layer material, core foam layer and outer layer material is: 1:...

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Abstract

The invention discloses a core-layer foamed composite tubular product and a preparation process thereof. The core-layer foamed composite tubular product consists of an inner-layer material, a core-layer foamed layer and an outer-layer material coaxially in sequence, wherein raw materials for preparing the inner-layer material include medium-density polyethylene, low-density polyethylene, a flame retardant, calcium carbonate and an antistatic agent, raw materials for preparing the core-layer foamed layer include an ethylene-maleic anhydride grafted copolymer, butadiene styrene rubber, a foaming agent and a stabilizer, raw materials for preparing the outer-layer material include polyvinyl chloride and MBS resin, and the preparation process comprises the steps of extruding the inner-layer material, extruding the core-layer foamed layer and extruding the outer-layer material to obtain the three-layer composite tubular product. The overall performance of the core-layer foamed composite tubular product prepared by adopting the preparation process is fully improved.

Description

technical field [0001] The invention relates to the field of plastic pipes, in particular to a core foam composite pipe and a preparation process thereof. Background technique [0002] With the continuous expansion of the application scope and fields of plastic pipes, people pay more and more attention to the promotion and improvement of the comprehensive performance of plastic pipes. The development of plastic pipes is mainly developing rapidly in the direction of high-tech content, high comprehensive quality performance, high design and R&D investment, and low-cost raw material consumption. Among the many new plastic pipes, the core foamed PVC plastic pipe is a very promising new plastic pipe. [0003] The core foamed PVC plastic pipe not only has all the advantages of ordinary PVC plastic pipes, but also has many unique advantages. The core foamed PVC material is filled with a layer of foamed material between the inner and outer PVC skin layers. Its outstanding features...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L71/02C08K3/36C08K3/26C08L23/08C08L35/00C08L9/06C08K3/22C08L27/06C08L51/04C08J9/08F16L9/12
CPCC08L23/06C08J9/08C08J2203/02C08J2323/08C08J2335/00C08J2409/06C08K2201/017C08L23/0869C08L27/06C08L35/00C08L2203/18C08L2205/025C08L2205/03C08L2207/066F16L9/121C08L71/02C08K3/36C08K2003/265C08L9/06C08K2003/2255C08K2003/2213C08L51/04
Inventor 潘海云
Owner 潘海云
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