Pipeline of polar polymer and poleless polymer composing with metal reinforcement

A composite pipe and metal reinforcement technology, applied to rigid pipes, pipes, pipes/pipe joints/pipe fittings, etc., can solve problems such as difficult bonding and compounding, and achieve reliable pipe network performance

Inactive Publication Date: 2007-09-19
甘国工
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the above deficiencies, to provide a kind of metal and polyethylene compound interface can solve the technical problem that the interface between t

Method used

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  • Pipeline of polar polymer and poleless polymer composing with metal reinforcement
  • Pipeline of polar polymer and poleless polymer composing with metal reinforcement
  • Pipeline of polar polymer and poleless polymer composing with metal reinforcement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Fig. 1 has provided the figure of embodiment 1 of the present invention. Referring to Fig. 1, a φ160mm composite pipe network 1 composed of polar polymers and nonpolar polymers and a metal reinforcement skeleton is composed of three-way pipe fittings 2 and pipes 3 and 4. The pipe wall of the pipe fitting 2 is formed by bonding and coating the inner and outer surfaces of the graft-modified polyolefin continuum 5 with polar groups passing through the holes in the steel reinforcement skeleton 6 with holes. , a layer of non-polar polyolefin layer 7 is compounded on the surface of the inner layer of the pipe wall. The pipe walls of the pipes 3 and 4 are made of graft-modified polyolefin continuums 8 and 9 respectively passing through steel plates with holes and welded cylindrical skeletons 10 or latitudinal steel wires 11 wound radially. The steel wires 12 are welded to form a cylindrical frame 13 and are respectively bonded and clad with the cylindrical frame. A non-polar...

Embodiment 2

[0031]Fig. 2 shows a schematic diagram of the pipe structure in Example 2 of the present invention. Referring to Fig. 2, the structure of the skeleton 16 in the pipe 19 is the same as that of the cylindrical skeleton in Example 1, both are cylindrical skeletons welded by steel wire mesh, and the pipe wall is formed by firmly bonding and covering the skeleton through the holes on the cylindrical skeleton The continuum of 17 is non-cross-linked temperature-resistant polyethylene (PE-RT) with polar groups (PE-RT DX800 produced by SK Company in Korea). The warm polyethylene grafting rate is 0.5%-0.8%, 100 parts by mass, 2-5 parts of maleic anhydride (MAH), and 0.1-0.4 parts of peroxide grafting initiator (DCP). The inner layer of the pipe wall 17 is compounded with a non-polar non-crosslinked heat-resistant polyethylene layer 18. The pipe 13 is connected with pipe fittings of the same structure to form a pipe network, which can withstand hot water at 60-80°C for long-term safe ope...

Embodiment 3

[0033] Fig. 3 shows a schematic diagram of the pipe structure in Example 3 of the present invention. Referring to Fig. 3, in the pipe 20, there is a tubular metal reinforcement skeleton 21 formed by winding radial steel wires and welding the latitudinal steel wires, and the continuum of the pipe wall 22 formed by firmly bonding and covering the metal skeleton through holes has polar groups random copolymerized polypropylene, and the inner layer of the pipe wall 22 is compounded with a random copolymerized polypropylene (PP-R) layer 23 without polarity. Extrude and granulate with an extruder according to the following formula to obtain a polypropylene with a polar group with a graft rate of 0.4% to 0.7%. This polypropylene can be used to produce composite pipes for hot water pipe networks. At 80°C, 0.6Mpa long-term operation under conditions. The formula is: 100 parts of random copolymerized polypropylene (PP-R) produced by Beijing Yanshan Petrochemical Co., Ltd. 2-4 parts of...

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Abstract

The invention provides a polar polymer and a non-polar polymer and a metallic reinforcement combined canal, the combined canal wall is formed by firm gluing and coating of grafting modified polyolefin polymer continuum with polar group with inner-outer surfaces of apertures on metallic reinforcement frame, a non-polar polyolefin polymer layer is coated on inner or outer layer of the canal wall. The invention solves technical problem of hard integral gluing of metallic and polyethylene combination interface, and reduces the cost and has a appreciable economic benefit, which provides reliable and convenient connections.

Description

Technical field: [0001] The present invention relates to the grafting modification of polyolefin materials, which is modified from non-polar polymers to polar polymers, and relates to the composite pipe production technology of metal and polyolefin, especially metal cylinders with holes as reinforcements The shape skeleton is related to the composite pipe of polar polyolefin material and non-polar polyolefin material. Background technique: [0002] Metal and polymer composite pipes, including pipes and pipe fittings, have many technical and patent reports, and there are also a large number of products and engineering applications in practical engineering applications. This composite pipe has become an important industry that is constantly developing and progressing. [0003] Metal pipes have high strength and low coefficient of thermal expansion, but they are not resistant to corrosion. Not only can they not transport corrosive fluids, even if they transport non-corrosive fl...

Claims

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Application Information

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IPC IPC(8): F16L9/147C08F255/02B29C35/00
Inventor 甘国工
Owner 甘国工
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