Multiplayer composite tube made from polymer possessing texture in nano layer and making method

A composite pipe material and processing method technology, applied in the direction of pipes, rigid pipes, household appliances, etc., can solve the problems of large amorphous region defects, low circumferential ductility, pipe damage, etc., achieve high interlayer bonding strength, improve Effects of improved physical and mechanical strength, barrier properties and corrosion resistance
CN1687626AInactive Publication Date: 2005-10-26SICHUAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN UNIV
Publication Date
2005-10-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses the multi-layer polymer composite tubing with nanometer layer structure and its manufacturing method. The composite tubing is formed by the two polymers with non-parallel hetero crossed structure, which passes through the micro-layer coextrusion, the cooled forming, the heat processing and the heat pulling procedures. The c axis of the base polymer layer is along the axial of the tubing, and it accumulative layer thickness is 50-99%of the thickness of the tubing; the c axis of the agglomerative polymer crosses with the axis line of the tubing, and its accumulative thickness is 1-50% of that of the tubing, and the thickness of the single layer of the agglomerative polymer is 50-300 nanometers. The invention forms the reinforcing phase in the tubing in order to strengthen the intensity of the tubing and to improve the expansion of the tubing.
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Description

[0001] 1. The field of surgery.

[0002] The invention belongs to the technical field of polymer material processing, and more specifically relates to a polymer composite pipe for bearing internal pressure and a processing method thereof. 2. Background technology

[0003] Polymer pressure pipes have many advantages such as corrosion resistance, low flow resistance, high specific rigidity / strength, easy processing, light weight, easy construction and installation, etc., and are widely used in production and living fields such as chemical fluid transportation, civil water transportation, and gas transportation. When the pressure pipe bears the internal expansion pressure of the fluid, its hoop stress is twice the axial stress. However, for polymer pipes usually extruded, due to the macromolecular orientation along the axial direction and the effect of weld marks, the hoop strength of the pipe is much lower than the axial strength, which makes ordinary plastic pipes prone to hoop...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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