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Antibacterial oxygen obstructing composite pipe and preparation method thereof

A technology for composite pipes and pipes, applied in the field of materials, can solve the problems of low co-extrusion surface bonding strength and delamination, and achieve the effects of good antibacterial effect, long service life and improved service life.

Active Publication Date: 2010-02-10
宝鸡盛鼎管业有限责任公司
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Problems solved by technology

[0003] At present, the production and processing methods of oxygen-barrier plastic pipes mostly use the coating method, which is a two-step molding, that is, the adhesive layer and the barrier layer (EVOH) coating are simultaneously extruded on the single-layer pipe that has been extruded to form three layers. structure, but the co-extruded surface has low adhesive strength and is prone to delamination

Method used

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  • Antibacterial oxygen obstructing composite pipe and preparation method thereof
  • Antibacterial oxygen obstructing composite pipe and preparation method thereof

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Embodiment Construction

[0028] Embodiments of the present invention are described below in conjunction with the accompanying drawings.

[0029] In order to make the geothermal pipe have oxygen barrier properties, it is usually necessary to add a layer of high-barrier material in the middle or outer layer of the pipe. There are many kinds of these high-barrier polymer materials, commonly used are EVOH, PVDC, etc. EVOH. The oxygen barrier property of the PE-RT pipe coated with EVOH can reach less than 0.15mg / m2.day.atm, which can meet the requirements of the heating system to block oxygen.

[0030] figure 1 The advantages and disadvantages of PE-RT / EVOH pipes with three different oxygen barrier positions are shown:

[0031] 1) Figure A: The advantage of the oxygen barrier layer in the middle is that it is not easy to scratch, but the processing technology is complicated and the molding is not easy.

[0032] 2) Figure B: The oxygen barrier layer is on the outer layer. Properly increase the thickness ...

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Abstract

The invention relates to an antibacterial oxygen obstructing composite pipe which is prepared by extruding an oxygen obstructing layer at the outer layer and a base material layer at the inner layer of a pipe into a whole together by adhesive at the middle layer; and adding a nano-grade quartz material and a silver ion into the base material layer to be melted into a whole. The antibacterial oxygen obstructing composite pipe is formed by compounding multilayer coextrusion and hot melting, has favorable oxygen obstructing effect and can ensure that the inner wall of the pipe is not scaled and does not breed bacteria, lead the water quality to be more sanitary and safer, lead the heat conduction efficiency of the pipe to be higher and is more suitable for geothermal heating.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to an antibacterial and oxygen-resistant composite pipe and a preparation method thereof. Background technique [0002] As we all know, the aging of plastics and metals is the result of the joint action of light, heat, oxygen, and fatigue. As far as light is concerned, the service life of plastics will be extended by 10-20 years in the absence of light; the service life of plastics and metals will also be extended by 10-20 years in the absence of oxygen. Compared with metal pipes, commonly used plastic pipes have significant advantages such as light weight, low thermal conductivity, small heat loss, easy and fast installation, etc. The permeability of plastic pipes to oxygen is much higher than that of metal pipes, especially single pipes. Plastic pipes made of materials are used in the floor heating piping system. Although it is required that the long-term medium tem...

Claims

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Application Information

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IPC IPC(8): F16L9/14B29C47/06A61L2/232A61L101/02
Inventor 王新权
Owner 宝鸡盛鼎管业有限责任公司
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