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Heat-resisting polyethylene composite pipe and preparation method thereof

A technology of heat-resistant polyethylene and composite pipes, applied in the direction of hoses, pipes, mechanical equipment, etc., can solve the problems of unsuitable pipe extrusion, high material viscosity, and difficult realization, etc., and achieve simple structure, long service life, The effect of high production efficiency

Active Publication Date: 2014-09-10
XIAMEN TUBETECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, UHMWPE-RT (Ultra High Molecular Weight Polyethylene) is not suitable for pipe extrusion due to its high molecular weight and high viscosity during melt processing.
It is not easy to realize in actual production

Method used

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  • Heat-resisting polyethylene composite pipe and preparation method thereof
  • Heat-resisting polyethylene composite pipe and preparation method thereof
  • Heat-resisting polyethylene composite pipe and preparation method thereof

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Experimental program
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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing.

[0021] like figure 1 and 2 As shown, the embodiment of the heat-resistant polyethylene composite pipe is provided with an inner pipe 1 and an outer pipe 2, the inner pipe 1 is a heat-resistant polyethylene (PE-RT) pipe, and the outer pipe 2 is a cross-linked modified Heat-resistant polyethylene (PE-RT) pipe, the outer pipe 2 wraps the inner pipe 1 outside.

[0022] The thickness of the inner tube 1 is 0.5-2.0 mm, and the thickness of the outer tube 2 is 1.0-2.0 mm.

[0023] The preparation method of the heat-resistant polyethylene composite pipe is as follows:

[0024] Through secondary extrusion coating, the inner tube 1 is extruded first, and then another extruder is used to coat the heat-resistant polyethylene (PE-RT) material with a crosslinking agent on the inner tube 1 , to form a cross-linked modified outer pipe 2, so that the inner pipe 1 and the outer pipe 2 ar...

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Abstract

The invention provides a heat-resisting polyethylene composite pipe and a preparation method of the heat-resisting polyethylene composite pipe. The invention provides the heat-resisting polyethylene composite pipe which can be used as a water inlet pipe and a water outlet pipe of a water faucet, a water inlet pipe of a shower head, a toilet water inlet pipe, a floor heating pipe and the like, and also provides the preparation method of the heat-resisting polyethylene composite pipe. The heat-resisting polyethylene composite pipe comprises an inner pipe and an outer pipe; the inner pipe is a heat-resisting polyethylene pipe and the outer pipe is a cross-linked modified heat-resisting polyethylene pipe; and the outer pipe is covered outside the inner pipe. By a twice extruding and cladding manner, the inner pipe is firstly extruded and then another extruding machine is used; and a heat-resisting polyethylene material added with a cross-linking agent is covered on the inner pipe to form a cross-linked modified heat-resisting polyethylene outer pipe, so that the inner pipe and the outer pipe are tightly connected to form the heat-resisting polyethylene composite pipe.

Description

technical field [0001] The invention relates to a polyethylene composite pipe, in particular to a heat-resistant polyethylene composite pipe and a preparation method thereof. Background technique [0002] At present, a large number of hoses are used in the bathroom industry, mainly for connecting various water outlet parts, such as hoses for shower connection valves, water inlet and outlet pipes for faucets, water inlet pipes for toilet tank accessories and Outlet pipes, floor heating pipes used under the floor, etc. These tubes are mainly extruded from various soft plastic materials. For example: soft polyvinyl chloride (FPVC), polypropylene (PP), cross-linked polyethylene (PEX), heat-resistant polyethylene (PE-RT) and other materials. [0003] Hoses of different materials have limited scope of application due to the limitation of material properties. For example, soft polyvinyl chloride (FPVC) pipes can only be used for outlet pipes under normal temperature and low press...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L11/06B29C47/06B29L23/00
Inventor 黄贤明梅金良李明仁
Owner XIAMEN TUBETECH INC
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