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Production technique for external corrugated reinforced plastic heat-preservation heating/cooling pipe

A production process, corrugated technology, applied in the direction of thermal insulation, protection of pipelines through thermal insulation, pipes/pipe joints/fittings, etc., can solve the problems of inability to make full use of fiber reinforcement, single continuous fiber reinforcement, limiting the application of composite pipes, etc. , to achieve excellent temperature resistance, smooth inner wall, and reduce maintenance costs.

Active Publication Date: 2016-03-16
盘锦建硕管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For most of the existing fiber-reinforced thermoplastic composite pipes, most of the continuous fibers are infiltrated with thermoplastics under tension to prepare continuous fiber-reinforced thermoplastic prepreg tapes, and then the prepreg tapes are wrapped around thermoplastic pipes, or Directly wind continuous fibers on the surface of thermoplastic pipes, and finally extrude a layer of cladding on the surface of pipes with winding layers, or use short fibers and thermoplastics to blend and extrude pipes, so that either the fibers will be damaged under tension, Either the fiber reinforcement cannot be fully utilized, and the winding prepreg tape or winding continuous fiber reinforcement method is relatively simple, which limits the application of composite pipes in some harsh conditions

Method used

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  • Production technique for external corrugated reinforced plastic heat-preservation heating/cooling pipe
  • Production technique for external corrugated reinforced plastic heat-preservation heating/cooling pipe
  • Production technique for external corrugated reinforced plastic heat-preservation heating/cooling pipe

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Effect test

Embodiment 1

[0045] Such as figure 2 As shown, the heating / cooling pipe described in this embodiment is prepared according to the following steps:

[0046] Put the heat-resistant polyethylene (Total XRT70) into the extruder for uniform plasticization, and the extrusion temperature is 190-220 ° C. According to the conventional preparation process, the heat-resistant polyethylene is prepared by vacuum sizing, cooling and setting, blast drying, and traction. Vinyl inner tube, traction speed is 0.5-0.9 m / min; the nominal outer diameter of the inner tube is 16mm-400mm, and the wall thickness is 2.3mm-36.6mm.

[0047] Choose glass fiber, weave according to the rhombus two-dimensional structure, the weaving angle is 30°, weaving 5 layers, the number of spindles is 48, the yarn rotation speed: 0.23 m / min, the inner tube traction speed: 0.5 m / min. The outer layer of the heat-resistant polyethylene inner tube is braided glass fiber.

[0048] Evenly preheat the outer layer of the heat-resistant po...

Embodiment 2

[0053] Such as image 3 As shown, the heating / cooling pipe described in this embodiment is prepared according to the following steps:

[0054] Put the heat-resistant polyethylene (Total XRT70) into the extruder for uniform plasticization, and the extrusion temperature is 190-220 ° C. According to the conventional preparation process, the heat-resistant polyethylene is prepared by vacuum sizing, cooling and setting, blast drying, and traction. Vinyl inner tube, traction speed is 0.5-0.9 m / min; the nominal outer diameter of the inner tube is 16mm-400mm, and the wall thickness is 2.3mm-36.6mm.

[0055] Choose polyester fiber, weave according to the three-dimensional structure of the four-step method, the weaving angle is 45°, weaving 5 layers, the length of flower joints is 3.5-200mm, the number of spindles is 144, and the inner tube traction speed: 0.4-0.6 m / min. The outer layer of the heat-resistant polyethylene inner pipe is braided with polyester fibers.

[0056] Evenly pre...

Embodiment 3

[0061] Such as image 3 As shown, the heating / cooling pipe described in this embodiment is prepared according to the following steps:

[0062] Put the heat-resistant polyethylene (Total XRT70) into the extruder for uniform plasticization, and the extrusion temperature is 190-220 ° C. According to the conventional preparation process, the heat-resistant polyethylene is prepared by vacuum sizing, cooling and setting, blast drying, and traction. Vinyl inner tube, traction speed is 0.5-0.9 m / min; the nominal outer diameter of the inner tube is 16mm-400mm, and the wall thickness is 2.3mm-36.6mm.

[0063] Select nylon fiber, weave according to the three-dimensional structure of the two-step method, the weaving angle is 15°, weaving 3 layers, the length of flower joints is 3.5-20mm, the number of spindles is 48-60, and the weaving process of inner tube traction speed: 0.4-0.6 m / min , weaving nylon fibers on the outer layer of the heat-resistant polyethylene inner tube.

[0064] Eve...

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Abstract

The invention belongs to the technical field of building pipe materials and particularly relates to a production technique for an external corrugated reinforced plastic heat-preservation heating / cooling pipe. The production technique for the external corrugated reinforced plastic heat-preservation heating / cooling pipe comprises the steps that a heat-resistant polyethylene inner pipe body is prepared; a fiber reinforced layer is prepared; a plastic cladding layer is prepared; a foamed heat-preservation layer is prepared; and a polyethylene outer pipe body is prepared. The using temperature of the corrugated reinforced plastic heat-preservation heating / cooling pipe produced through the technique is -40-85 DEG C, the heating requirement of the plastic pipe can be met, and the pipe can also be used as a centralized cooling pipeline.

Description

technical field [0001] The invention belongs to the technical field of building pipes, and in particular relates to a production process of an outer corrugated reinforced heat-insulating plastic heating / cooling pipe. Background technique [0002] Polyethylene (PE) is a highly crystalline, non-polar thermoplastic resin. The appearance of the original polyethylene is milky white, and the thin section is translucent to a certain extent. PE has excellent resistance to most domestic and industrial chemicals. The application of PE materials is very wide. The field of pipes is also an important aspect in the application field of polyethylene. [0003] Polyethylene plastic pipes are mainly divided into two categories: high-density polyethylene HDPE (low-pressure polyethylene) and low-density polyethylene LDPE (high-pressure polyethylene). Due to the difference in physical properties between HDPE and LDPE, the two materials are different in the application field of pipes: low-densi...

Claims

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Application Information

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IPC IPC(8): F16L9/12F16L11/15F16L59/02C08L23/06C08L27/06C08L51/06C08L23/28C08K5/134C08K5/526C08K5/12B29D23/18
CPCB29D23/18C08K5/1345C08K5/526C08L23/06C08L27/06C08L2203/18C08L2207/062F16L9/12F16L11/15F16L59/02C08L51/06C08L23/286C08K5/12
Inventor 刘世军刘慈恩唐永博宋歌
Owner 盘锦建硕管业有限公司
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