CN202992413U

CN202992413U - Novel high-strength HDPE (high-density polyethylene) composite pipe

Info

Publication number: CN202992413U
Application number: CN 201220591498
Authority: CN
Inventors: 郭翠芳; 林枫
Original assignee: HUBEI HUIFENG PLASTIC PIPE CO Ltd
Current assignee: HUBEI HUIFENG PLASTIC PIPE CO Ltd
Priority date: 2012-11-12
Filing date: 2012-11-12
Publication date: 2013-06-12
Anticipated expiration: 2022-11-12

Abstract

Disclosed is a novel high-strength HDPE (high-density polyethylene) composite pipe which is composited by an HDPE core pipe and a modified PE (polyethylene) layer. The innermost layer is the HDPE core pipe which is wrapped by a PE combined layer, and the modified PE layer is wrapped outside the PE combined layer. The novel high-strength HDPE composite pipe has the advantages of good impact resistance, high pressure-resistant strength, high in abrasion resistance and the like. The HDPE core pipe is resistant to corrosion, long in service life and resistant to corrosion of various corrosive media such as acids, alkali and salts, the modified PE layer can inhibit oxidative degradation, improve uvioresistant performance of a pipe body and prolong the service life of the pipe body, and the PE combined layer adopts a thermoplastic elastomer, so that material performance is greatly improved, combining capacity of the core pipe and the modified PE layer is improved, and the service life of the composite pipe can reach 60 years.

Description

Novel high-strength HDPE composite pipe

Technical field

The utility model relates to a kind of PE plastic tube, particularly a kind of novel high-strength HDPE composite pipe.

Background technique

Plastic tube is the goods that the synthetic resin doping processes through melt molding.Additive has plasticizing agent, not random agent, bulking agent, oiling agent, colorant, ultraviolet light absorber, modifier etc.The common plastics pipe has: hard polvinyl choride pipe (PVC-U), high density polyethylene pipe (PE-HD), crosslinked polyethylene pipe (PE-X), polypropylene random copolymer pipe (PP-R), Polybutylene Pipe (PB), engineering plastics acrylonitrile-butadiene-phenylethylene copolymer (ABS) etc.Plastic tube has that erosion resisting is good, thermal conductivity is little, and pyroconductivity is low, adiabatic heat-insulation, and good energy-conserving effect, density are little, and material is light, and transportation is installed conveniently, simple and direct flexibly, keeps in repair and waits easily advantage.At present, the plastic water pipe industry development is very fast, and it is taken as the leading factor mainly with polyethylene (PE) and PVC＝polyvinyl chloride (PVC) tubing, although have lot of advantages, but ubiquity, and shock resistance is poor, compressive strength is not high, poor rigidity, and grazing is poor, the defectives such as poor fire.Existing any plastic pipe also all can't be avoided not coming to harm under the shock of hard weight.Therefore, in design and use, especially to note " maximizing favourable factors and minimizing unfavourable ones ".

Summary of the invention

The purpose of this utility model is that a kind of novel high-strength HDPE composite pipe will be provided, and existing pipeline shock resistance is poor, compressive strength is not high, poor rigidity to solve, and grazing is poor, the technical problems such as poor fire.

For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of novel high-strength HDPE composite pipe, and this composite pipe is composited by HDPE core pipe, modified PE layer, and wherein the innermost layer is HDPE core pipe, described HDPE core pipe is enclosed with the PE binder course, and the PE binder course is wrapped with the modified PE layer.

In the utility model, the synergies such as calcium sulfate crystal whiskers, aluminium borate whisker have good enhancing, peptizaiton, and maleic anhydride grafted polyethylene is a kind of good nucleator, allow product is purer, free from admixture; Polyethyleneglycol is as dispersing agent, and because of its polymer resin epigranular, viscosity is easy to control, is difficult for sticking wall and stirrer, can extend kettle cleaning period, enhances productivity; Antioxidant BHT has antioxidation; The septichen phenyl ester has the uvioresistant effect.Owing to having added TPUE (TPU) in the PE middle close binder.Elastomer has good combination to multilaminar polyethylene, with sorbitol synergy, can effectively improve the toughness of goods and rigidity, heat distortion temperature, dimensional stability.

The utlity model has that shock resistance is good, compressive strength is high, the abrasion resistance properties high.Wherein HDPE core pipe is corrosion-resistant, and long service life can acid-and base-resisting, the erosion of the various Korrosionsmediums such as salt, the modified PE layer can suppress plastics oxidative degradation, improve the anti-ultraviolet property of body, extend body working life.The PE binder course adopts thermoplastic elastomer (TPE), has greatly improved material property, has improved core pipe and modified PE layer binding ability, and can reach 60 years its working life.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the utility model structure sectional view.

Embodiment

Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described in further detail.

Fig. 1 is structural representation of the present utility model; Fig. 2 is the utility model structure sectional view.By Fig. 1 in conjunction with Fig. 2 as can be known, this HDPE composite pipe mainly is made of HDPE core pipe 5, modified PE layer 1, PE binder course 3.The innermost layer is HDPE core pipe 5, and HDPE core pipe 5 is wrapped with PE binder course 3, and PE binder course 3 is wrapped with modified PE layer 1.

Below the several examples during novel high-strength HDPE composite pipe is made.

Embodiment 1: by weight with 50 parts of HDPE resins (high density polyethylene (HDPE)), 0.2 part of sorbitol, 5 parts of input First extruder hoppers of TPUE; By weight with 80 parts of PE resins, 2 parts of mica flours, 2 parts of calcium sulfate crystal whiskers drop in second extruder hopper after 1 part of nano titanium oxide, 5 parts of 1 part of maleic anhydride grafted polyethylenes of aluminium borate whisker, 3 parts of Sodium Benzoates, 0.5 part of antioxidant BHT, 0.5 part of septichen phenyl ester, 0.3 part of mixing of polyethyleneglycol; The 3rd extruder prepares HDPE core pipe 5.During production, HDPE core pipe 5 is extruded by the 3rd extruder, extrudes PE binder course 3 with HDPE core pipe 5 parcels by the First extruder, after water-cooled and sizing, extrudes modified PE layer 1 with PE binder course 3 parcels by second extruder.Can guarantee that like this between internal and external layer PE, hot melt sticks to one, thereby obtain excellent HDPE composite pipe.

Embodiment 2: by weight with 50 parts of HDPE resins (high density polyethylene (HDPE)), 0.5 part of sorbitol, 3 parts of input First extruder hoppers of TPUE; By weight with 82 parts of PE resins, 3 parts of mica flours, 3 parts of calcium sulfate crystal whiskers drop in second extruder hopper after 1 part of nano titanium oxide, 5 parts of 2 parts of maleic anhydride grafted polyethylenes of aluminium borate whisker, 2 parts of Sodium Benzoates, 0.4 part of antioxidant BHT, 0.3 part of septichen phenyl ester, 0.2 part of mixing of polyethyleneglycol; The 3rd extruder prepares HDPE core pipe 5.During production, HDPE core pipe 5 is extruded by the 3rd extruder, extrudes PE binder course 3 with HDPE core pipe 5 parcels by the First extruder, after water-cooled and sizing, extrudes modified PE layer 1 with PE binder course 3 parcels by second extruder.Can guarantee that like this between internal and external layer PE, hot melt sticks to one, thereby obtain excellent HDPE composite pipe.

By weight with 50 parts of HDPE resins (high density polyethylene (HDPE)), 0.2 part of sorbitol, 8 parts of input First extruder hoppers of TPUE; By weight with 85 parts of HDPE resins, 3 parts of mica flours, 3 parts of calcium sulfate crystal whiskers drop in second extruder hopper after 2 parts of nano titanium oxides, 4 parts of 3 parts of maleic anhydride grafted polyethylenes of aluminium borate whisker, 2.5 parts of Sodium Benzoates, 0.3 part of antioxidant BHT, 0.3 part of septichen phenyl ester, 0.2 part of mixing of polyethyleneglycol; The 3rd extruder prepares HDPE core pipe 5.During production, HDPE core pipe 5 is extruded by the 3rd extruder, extrudes PE binder course 3 with HDPE core pipe 5 parcels by the First extruder, after water-cooled and sizing, extrudes modified PE layer 1 with PE binder course 3 parcels by second extruder.Can guarantee that like this between internal and external layer PE, hot melt sticks to one, thereby obtain excellent HDPE composite pipe.

In order to verify effect of the present invention, embodiment 1-3 is compared than other like product, shown in table specific as follows.Table 1: the contrast and experiment between two kinds of water pipes

Project	Other company's composite pipe	Novel HDPE composite pipe
			Working life	50	60
Creep properties	Little	Very little
			Bursting pressure	Generally	High
Hydraulic pressure test (80 ℃, 4.5MPa) h	165h	﹥ 165h is without brittle failure
			Thermostability (200 ℃) min	22	35
Fracture elongation %	367	505
			Flexural strength (MPa)	23	35
Ring stiffness (KN/ ㎡)	22	28
			Body tensile yield strength (MPa)	23	29

Test result shows: compare other like product, adopt the novel high-strength HDPE composite pipe of the present invention's preparation, have better mechanical property.

At last, should be pointed out that above embodiment is only the more representational example of the present invention.Obviously, the invention is not restricted to above-mentioned embodiment.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment all should be thought to belong to protection scope of the present invention.

Claims

1. novel high-strength HDPE composite pipe, be composited by HDPE core pipe, modified PE layer by HDPE core pipe, stainless steel stratum reticulare, this composite pipe, it is characterized in that described innermost layer is HDPE core pipe, described HDPE core pipe is enclosed with the PE binder course, and the PE binder course is wrapped with the modified PE layer.