Water supply pipes and preparation method thereof

A technology for water supply pipes and pipes, which is applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of aging resistance, and achieve the effects of not easy aging, good toughness, and low overall cost

Inactive Publication Date: 2011-04-06
KANGTAI PLASTIC SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the aging resistance and other problems existing in the existing polyethylene pipes, the present invention aims

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The outer layer of polyethylene and the inner layer of polyethylene derivatives are respectively extruded and heated by the extruder, and then extruded from the same extrusion die, and the two layers of the outer layer of polyethylene and the inner layer of polyethylene derivatives are co-extruded, and Two layers of tightly bonded composite tubing. Among them, the length of the barrel area of ​​the polyethylene PE two-layer extruder is divided into 4 sections, and the temperature of each section is: 170±5°C for the 1st section, 175±5°C for the 2nd section, and 180±5°C for the 3rd section. The 4th section is 185±5°C, the length of the die head in the die area of ​​the extruder is divided into 7 sections, and the temperature of each section is: 1st section is 195±10°C, 2nd section is 185±5°C, and 3rd section is 190± 5°C, the 4th stage is 195±5°C, the 5th stage is 200±5°C, the 6th stage is 205±5°C, the 7th stage is 210±5°C, the speed of the extruder is 100 rpm, and the tra...

Embodiment 2

[0034]The outer layer of polyethylene, the middle layer of polyethylene and the inner layer of polyethylene derivatives are respectively extruded and heated by the extruder, and then the outer layer of polyethylene, the middle layer of polyethylene and the inner layer of polyethylene derivatives are extruded from the same extrusion die. A three-layer co-extrusion and three-layer tightly bonded composite pipe. The length of the barrel area of ​​the extruder for the outer layer of polyethylene, the middle layer of polyethylene and the inner layer of polyethylene derivatives is divided into 4 sections, and the temperature of each section is: 1 section is 170±5°C, and the second section is 175±5°C , the 3rd section is 180±5℃, the 4th section is 185±5℃, the length of the die head in the die area of ​​the extruder is divided into 7 sections, and the temperature of each section is: 1st section is 195±10℃, and the 2nd section is 185 ±5°C, 190±5°C for the 3rd stage, 195±5°C for the 4th...

Embodiment 3

[0036] Extrude the outer layer of polyethylene, the middle layer of polyethylene PE, the second layer of polyethylene, and the inner layer of polyethylene derivatives through the extruder respectively, and then extrude the outer layer of polyethylene, the inner layer of polyethylene through the same extrusion die. The multi-layer co-extrusion of the middle layer of ethylene and the inner layer of polyethylene derivatives, and the multi-layer composite pipe is closely combined. The length of the barrel area of ​​the extruder for the outer layer of polyethylene, the middle layer of polyethylene PE and the inner layer of polyethylene derivatives is divided into 4 sections, and the temperature of each section is: 1 section is 170±5°C, and 2 sections is 175±5°C ℃, the 3rd section is 180±5℃, the 4th section is 185±5℃, the length of the die head in the die area of ​​the extruder is divided into 7 sections, and the temperature of each section is: 1st section is 195±10℃, and the 2nd sec...

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PUM

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Abstract

The invention discloses water supply pipes and a preparation method thereof. The water supply pipes are formed by combining at least one polyethylene layer and one polyethylene derivative layer closely, wherein the polyethylene derivative layer is the inner layer of the pipes. The preparation method of the water supply pipes comprises the following steps of: extruding the polyethylene layer and the polyethylene derivative layer by using an extruder respectively, heating, extruding by using a die head of a die head area of the same extruder, sizing the combined composite pipes, and cooling twice to form the water supply pipes. The water supply pipes have no toxic or side effect, aging resistance, acid-base resistance, high oxygen resistance, high cost performance, safety and reliability, high strength and toughness, strong impact resistance, low comprehensive cost and strong market competitive power, is easy to machine, convenient to use, difficult to age, crack and permeate, and is the innovation of the pipes. The water supply pipes can solve the problems that anti-aging degree, the using temperature and the oxygen resistance are low, and bacteria are easy to breed and the like inpolyethylene (PE) pipes effectively.

Description

technical field [0001] The invention relates to a water supply pipe and a preparation method thereof, in particular to a water supply pipe composed of two or more layers of different materials resistant to oxidation, acid and alkali, oxygen resistance and antibacterial, and a preparation method of the pipe. Background technique [0002] With the development of the times, the scope of application of plastic pipes has become wider and wider, and there are more and more varieties. At present, the main raw materials of plastic pipes used for conveying fluids at home and abroad are concentrated on materials such as PP, PVC, PB and PE. Compared with PVC, polyethylene (PE) pipe has the advantages of good toughness, low density, and wide temperature adaptability. Compared with PP-R pipe, it has the advantages of good temperature resistance and good flexibility, and is widely used. Water supply and drainage, gas pipes and other fields, and the application proportion in this field is...

Claims

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Application Information

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IPC IPC(8): F16L9/12B29C47/92B29C48/92
CPCB29C48/92B29C48/875B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 林云青张文霖郝洪波
Owner KANGTAI PLASTIC SCI & TECH GRP
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