CN102705591B - Heat-resistant and pressure-resistant polyethylene composite pipe - Google Patents

Heat-resistant and pressure-resistant polyethylene composite pipe Download PDF

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Publication number
CN102705591B
CN102705591B CN201210220586.3A CN201210220586A CN102705591B CN 102705591 B CN102705591 B CN 102705591B CN 201210220586 A CN201210220586 A CN 201210220586A CN 102705591 B CN102705591 B CN 102705591B
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China
Prior art keywords
resistant
heat
resin
polyethylene resin
composite pipe
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CN201210220586.3A
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CN102705591A (en
Inventor
范永兵
李永峰
雒建武
张红梅
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NINGXIA QINGLONG PIPES INDUSTRY Co Ltd
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NINGXIA QINGLONG PIPES INDUSTRY Co Ltd
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Abstract

The invention relates to a heat-resistant and pressure-resistant polyethylene composite pipe consisting of three layers, wherein the inner layer is made from a heat-resistant PERTII polyethylene resin material, the outer layer is made from a high density polyethylene resin material, and the two layers are closely combined through an adhesive resin containing a polyolefin main chain and a polar branch chain. The heat-resistant and pressure-resistant polyethylene composite pipe provided by the invention fully utilizes the following properties of the heat-resistant PERTII polyethylene resin and has the advantages of average utilization temperature being 60 DEG C, mature production extrusion technique and high stress cracking resistance.

Description

A kind of heat-resistant pressure-resistant polyethylene composite pipe
The present invention relates to the production technology of polyvinyl piping materials, concrete upper saying is a kind of preparation method of heat-resistant pressure-resistant polyethylene composite pipe.
Background technique
At present; due to the excellent cracking resistance of hdpe pipe, low temperature resistant, health is nontoxic, resistant to chemical media corrosion and easy for installation and can adopt the advantage such as trenchless technology, long service life, is commonly used to building water supply, draining, building and heating, cities and towns plumbing, gas, underground coal mine conveying, electric power, telecommunication protect and the field such as industrial, agriculture.But because itself material does not possess heat resistance, when conveying more than 45 DEG C media, the reduction of meeting build-up of pressure, bearing capacity significantly reduces, and causes its tubing to be restricted in medium transport field application such as middle high temperature.
At present, just partly its resistance to heat problem is solved in known patented technology and practical technique, all well do not solve its can heat-resisting again can be withstand voltage problem, traditional solution is only solve the problems such as its bearing capacity is low by increasing tube wall thickness, but tubing cost is very high, serious waste of resources, uses dissemination little.
Summary of the invention
The object of the invention is to overcome prior art defect, a kind of preparation method of heat-resistant pressure-resistant polyethylene composite pipe is provided.
Technological scheme of the present invention is:
A kind of heat-resistant pressure-resistant polyethylene composite pipe, be made up of two-layer, described composite pipe internal layer is heat-resisting PERT II type polyethylene resin material, and skin is high-density polyethylene resin material, between two-layer by take polyolefin as main chain, the resin of binding property of band polarity side chain combines closely and forms;
Described high-density polyethylene resin material is PE100 level or PE80 polyethylene grades resin;
Described adhering resin is a kind of resin of binding property developed based on EVA;
Above-mentioned heat-resisting PERT II type polyethylene resin material used is a kind of based on hervene copolymer high-performance mixed ingredients.
The present invention take full advantage of heat-resisting PERT II type polyethylene resin have average serviceability temperature up to 60 DEG C, produce and extrude work technical maturity, have the feature of high stress crack resistance performance, by pipeline prepared by the present invention, its use is safer, owing to having higher minimum desired strength (MRS,) make it have thinner wall thickness, cost reduces significantly.It is high that the present invention takes full advantage of hdpe pipe voltage endurance capability, the features such as cost of production is low, heat resistance after compound is withstand voltage polyethylene composite pipe is under same size pressure, 20% ~ 30% tubing cost can be saved compared with traditional PERT tubing, 30% ~ 40% cost can be saved compared with PP-R pipeline, and bearing capacity is higher, can substitute steel pipe completely in heavy caliber heating or the overheated media application of conveying with pressure, tubing has more economic advantages.
embodiment:
Heat resistance PERT II type polyethylene resin is extruded sizing by extruder and does Inner tubing layers, internal layer evenly applies one deck EVA type binding resin by glue-line extruder after extruding traction cooling on PERT II type polyvinyl plastic core pipe, then by another extruder PE100 rank high-density polyethylene resin and additive extruding and moulding evenly wrapped and do skin outside glue-line (EVA), by adhering resin by internal layer and skin is permanent bonds together, three layers of composite pipe altogether after agent make tubing through sizing, cooling twice.
The specific embodiment of the present invention is not limited to the mode that above-described embodiment provides.

Claims (1)

1. a heat-resistant pressure-resistant polyethylene composite pipe, form by three layers, internal layer is heat-resisting PERT II type polyethylene resin material, and skin is high-density polyethylene resin material, between two-layer by take polyolefin as main chain, the resin of binding property of band polarity side chain combines closely and forms;
Described high-density polyethylene resin material is PE100 level polyethylene resin;
Described take polyolefin as main chain, the resin of binding property of band polarity side chain is a kind of resin of binding property developed based on EVA;
Heat-resisting PERT II type polyethylene resin material used is a kind of based on hervene copolymer high-performance mixed ingredients;
The preparation method of described heat-resistant pressure-resistant polyethylene composite pipe is: heat-resisting PERT II type polyethylene resin is extruded sizing by extruder and does Inner tubing layers, internal layer evenly applies one deck EVA type binding resin via glue-line extruder, then by another extruder by the extruding and moulding of PE100 rank high-density polyethylene resin, make it evenly wrap and do skin outside glue-line, the composite pipe after three-layer co-extruded is finished product through sizing, cooling twice.
CN201210220586.3A 2012-06-29 2012-06-29 Heat-resistant and pressure-resistant polyethylene composite pipe Active CN102705591B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210220586.3A CN102705591B (en) 2012-06-29 2012-06-29 Heat-resistant and pressure-resistant polyethylene composite pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210220586.3A CN102705591B (en) 2012-06-29 2012-06-29 Heat-resistant and pressure-resistant polyethylene composite pipe

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CN102705591A CN102705591A (en) 2012-10-03
CN102705591B true CN102705591B (en) 2015-07-15

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106523810B (en) * 2015-09-14 2019-09-06 军事科学院系统工程研究院军事新能源技术研究所 A kind of MULTILAYER COMPOSITE fuel feed pipe
CN109591267A (en) * 2018-12-13 2019-04-09 宁夏青龙塑料管材有限公司 A kind of three layers of compound XPS prefabricated thermal insulation heat supply plastic pipe preparation method
CN110789093A (en) * 2019-10-31 2020-02-14 杜永明 Method for manufacturing polyethylene composite pipe
CN110815767A (en) * 2019-11-19 2020-02-21 杜永明 Manufacturing method of heat-resistant polyethylene composite pipe
CN112648445A (en) * 2020-12-21 2021-04-13 安徽杰蓝特新材料有限公司 Reinforced wear-resistant PE water supply pipe and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201875292U (en) * 2010-10-16 2011-06-22 青岛亚桑机械有限公司 Multi-course composite plastic heating tubular product
CN102128317A (en) * 2011-03-15 2011-07-20 广东联塑科技实业有限公司 PE-RT wiremesh framework composite pipe and preparation method and application thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101129476B1 (en) * 2009-09-29 2012-03-28 보성포리테크 주식회사 High Temperature Pipe
CN201851796U (en) * 2010-11-26 2011-06-01 程新显 Polypropylene and polyethylene composite pipe
CN102501410A (en) * 2011-10-21 2012-06-20 浙江师范大学 Preparation method for flame-retardant and antistatic pipeline with high strength

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201875292U (en) * 2010-10-16 2011-06-22 青岛亚桑机械有限公司 Multi-course composite plastic heating tubular product
CN102128317A (en) * 2011-03-15 2011-07-20 广东联塑科技实业有限公司 PE-RT wiremesh framework composite pipe and preparation method and application thereof

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