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PAP three-layer composite pipe

A layer-composite and inner-layer technology, applied in the field of composite pipes, can solve the problems of high PB price, limited water supply facilities, and microorganisms cannot grow parasitic, achieving long service life, low cost, and preventing the growth of microorganisms.

Inactive Publication Date: 2009-04-08
郑斗熙 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] PB (polybutene) is a high molecular inert polymer material with good flexibility and high chemical stability. Microbes cannot parasitize and grow. It is currently the most hygienic material for drinking water supply pipes in the world, but The high price of PB limits its use in water supply facilities

Method used

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  • PAP three-layer composite pipe

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Embodiment Construction

[0033] Such as figure 1 As shown, the PAP three-layer composite pipe provided by the present invention is composed of an outer layer 1, a middle layer 2 and an inner layer 3. The outer layer 1 is heat-resistant polyethylene, and the middle layer 2 is an adhesive resin. The inner layer 3 is polybutene (PB4237), and the adhesive resin is AP P553A or other types of anhydride-modified vinyl polymers.

[0034] The outer diameter specifications can be: d16, d20, d25, d32, d40, d50; the thickness of the middle layer can be 0.06-0.10mm; the thickness of the inner layer can be 0.20-0.50mm.

[0035] The PAP three-layer composite pipe prepared according to the above specifications can be used under the conditions of a maximum pressure of 1.0 MPa and a working temperature of 0°C to 110°C, without damage to the shape and composite structure.

[0036] The PAP three-layer composite pipe can be used for the following purposes:

[0037] 1. Water supply (sanitary pipe) and hot water pipe;

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Abstract

The invention aims at providing a composite pipe of good quality and environmental protection which can compound PE-RT (heat-resistant polyethylene) and PB (polybutene) very well; a PAP three-layer composite pipe which is provided by the invention is formed by compounding an outer layer, a middle layer and an inner layer together; the outer layer is PE-RT; the middle layer is binding resin; the inner layer is PB; and the binding resin is a anhydride modified vinyl polymer. The PAP three-layer composite pipe uses the environmental protection material of the binding resin for compounding the PB and the PE-RT together very well, and breaks the history that the PB and the PE-RT are mutually exclusive and never joined together; on the precondition that the using performance keeps unchanged, the advantages of PB drinking water performance can be used for overcoming the high price thereof so as to reduce the cost.

Description

technical field [0001] The invention relates to a composite pipe, in particular to a pipe composed of three layers of different polymers. Background technique [0002] PB (polybutene) is a high molecular inert polymer material with good flexibility and high chemical stability. Microbes cannot parasitize and grow. It is currently the most hygienic material for drinking water supply pipes in the world, but The high price of PB limits its use in water supply facilities. PE-RT (heat-resistant polyethylene) pipes are light in weight, strong in flexibility, and good in bendability. Although their environmental indicators are not as good as PB, their prices are lower, so they are widely used in water supply facilities. Contents of the invention [0003] In view of the above, PB and PE-RT have some complementary advantages and disadvantages. If it is possible to manufacture a pipe whose outer layer is PE-RT and inner layer is PB, their characteristics will be maximized to avoid w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/12
Inventor 郑斗熙梁祐赈
Owner 郑斗熙
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