Heavy caliber high-strength plastic wound pipe having pipe wall made of wrapping material and manufacture method therefor

A high-strength plastic and large-diameter technology, applied in the direction of pipes/pipe joints/fittings, pipes, rigid pipes, etc., can solve the problems of low hoop stress intensity, high longitudinal tensile strength of pipes, and large equipment investment, etc. Increased ring stress and ring stiffness, good flame retardant and static conductivity, increased effects of flame retardant and conductive materials

Inactive Publication Date: 2007-08-15
淄博寿山特种塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the molecular arrangement of the plastic pipe is oriented along the axial direction of the pipe during the extrusion process, so that the longitudinal tensile strength of the pipe is high and the hoop stress intensity is low. However, under the action of internal pressure, the hoop stress suffered by the pipe is greater than the tensile stress , so that the strength of the material is not fully exerted in terms of pressure resistance
[0004] In addition, due to the limita

Method used

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  • Heavy caliber high-strength plastic wound pipe having pipe wall made of wrapping material and manufacture method therefor
  • Heavy caliber high-strength plastic wound pipe having pipe wall made of wrapping material and manufacture method therefor
  • Heavy caliber high-strength plastic wound pipe having pipe wall made of wrapping material and manufacture method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] Weight ratio:

[0102] Plastic substrate: reinforcement material: flame retardant material: antistatic material = 1: 0.4: 0.1: 0.2;

[0103] Dosage: plastic substrate PE100 100kg;

[0104] Reinforcement glass fiber 40kg;

[0105] Flame retardant material decabromodiphenyl ether 6kg;

[0106] Antimony trioxide 4kg;

[0107] Antistatic material Conductive carbon black 20kg; raw materials are commercially available industrial products.

[0108] With the above ratio, make a winding pipe with a diameter of 2000mm.

[0109] Preparation method: mix the additives and the plastic base material evenly, and continuously extrude the solid plastic profile with the reinforcing material from the plastic extruder; at the same time, keep the temperature of the profile at 50-170°C and pull it to make the reinforcing material along the profile. Highly oriented in the longitudinal direction, producing high-strength plastic profiles.

[0110] There are two ways to make it, one is: using...

Embodiment 2

[0132] Weight ratio:

[0133] Plastic substrate: reinforcing material = 1:0.8;

[0134] Dosage: plastic substrate PE100 100kg;

[0135] Reinforcement glass fiber 80kg;

[0136] The compression ratio of the die head is set to: 70~100; the extrusion / drawing speed of the head of the plastic extruder is set to: 1000~2000mm / s;

[0137] Using the above proportions, the spiral pipe with a diameter of 2000mm and a standard size ratio (SDR) of 26.0 is produced. The results of its working pressure compared with pure PE100 and PE80 solid wall pipes are as follows:

[0138] standard size ratio

[0139] Using the above proportions, the spiral pipe with a diameter of 2000mm and an operating pressure (MOP) of 3.0MPa is produced. The results of comparing the standard size ratio (SDR) with pure PE100 and PE80 solid wall pipes are as follows:

[0140] standard size ratio

[0141] All the other are with embodiment 1.

Embodiment 3

[0143] Plastic substrate: reinforcing material: antistatic agent = 1: 0.6: 0.2;

[0144] Dosage: plastic substrate PE100 100kg;

[0145] Reinforcement glass fiber 60kg;

[0146] Antistatic material Conductive carbon black 20kg; raw materials are commercially available industrial products.

[0147] The compression ratio of the die head is set to: 2~50; the extrusion / drawing speed of the head of the plastic extruder is set to: 600~1500mm / s;

[0148] Using the above proportions, the spiral pipe with a diameter of 3000mm and a standard size ratio (SDR) of 26.0 is produced. The results of its working pressure compared with pure PE100 and PE80 solid wall pipes are as follows:

[0149] standard size ratio

[0150] Using the above proportions, the spiral pipe with a diameter of 3000mm and an operating pressure (MOP) of 3.6MPa is produced. The results of comparing the standard size ratio (SDR) with pure PE100 and PE80 solid wall pipes are as follows:

[0151] ...

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Abstract

The invention relates to a method for producing big high strength plastic coil tube which uses coil material to form tube wall, wherein the coil material is a composite plastic section bar formed by an inner core and an outer layer, which is alternatively or irregularly arranged, and nearby side walls are fused to connected or adhered by fused material, to be screwed to form tube wall. The coil material is drawn to direct the molecule longitudinally. The outer layer is thermal plastic, while the inner corn is strength material and/or flameproof material and/or static resistance composed in plastic base material. The fusing connecting material is plastic polymer or added with strength material and/or flameproof material and/or static resistance, to form plastic fused material. The strength material is distributed in the coil material and/or fusing connecting material, directionally distributed along the screw of high-strength coil tube. The invention has high strength, flameproof property and static resistance.

Description

technical field [0001] The invention belongs to the field of engineering components, and in particular relates to a large-caliber high-strength plastic winding pipe. Its diameter can reach 300-6000mm, which is suitable for application in water supply and drainage pipes, etc. Background technique [0002] Due to a series of superior properties such as light weight, corrosion resistance, small flow resistance, convenient construction, and long service life, plastic pipes are gradually replacing traditional pipes such as cast iron pipes, cement pipes, and ceramic pipes, and are increasingly widely used in the field of water supply and drainage. [0003] In the existing technology, the molecular arrangement of the plastic pipe is oriented along the axial direction of the pipe during the extrusion process, so that the longitudinal tensile strength of the pipe is high and the hoop stress intensity is low. However, under the action of internal pressure, the hoop stress suffered by ...

Claims

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Application Information

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IPC IPC(8): F16L9/12F16L9/16B29C69/02B29C53/56B29C47/00B29C55/00B29K105/06
Inventor 李寿山李研
Owner 淄博寿山特种塑料有限公司
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