CN202992420U

CN202992420U - High-pressure-resistant multi-element PE (polyethylene) plastic composite pipe

Info

Publication number: CN202992420U
Application number: CN2012205914960U
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 high-pressure-resistant multi-element PE (polyethylene) plastic composite pipe. The innermost layer of the water pipe is a UHMWPE (ultrahigh molecular weight polyethylene) core pipe, a first stainless steel mesh layer is wrapped on the outside of the UHMWPE core pipe, a PE middle bonding layer is wrapped on the outside of the first stainless steel mesh layer, a second stainless steel mesh layer is wrapped on the outer wall of the PE middle bonding layer, and an HDPE (high-density polyethylene) weather-resistant layer is wrapped on the outside of the second stainless steel mesh layer. The high-pressure-resistant multi-element PE plastic composite pipe has the advantages that the high-pressure-resistant multi-element PE plastic composite pipe is excellent in performance and high in applicability and bonding strength, is non-toxic, non-irritating and corrosion-resistant; the UHMWPE core pipe is excellent in abrasion resistance and impact resistance, the abrasion resistance of the pipe is better than that of a steel pipe under the condition of identical load, and the UHMWPE core pipe is outstanding in all engineering plastics; and the pressure resistance of the UHMWPE core pipe can be further improved owing to the first stainless steel mesh layer and the second stainless steel mesh layer, so that the high-strength UHMWPE core pipe is not easy to break and is excellent in impact resistance, and requirements can be met by the UHMWPE core pipe with a thin pipe wall when the core pipe is applied.

Description

High pressure resistant polynary PE plastic composite pipe

Technical field

The utility model relates to a kind of plastic composite pipe, particularly a kind of high pressure resistant polynary PE plastic composite pipe.

Background technique

Supplying drainage is widely used in the plumbing such as highway, railway bed, subway engineering, Landfills, tunnel, green belt, sports ground field, and subirrigation and the drainage system of agricultural, gardening.Under the traditional metal supplying drainage was buried because of length, especially easily rust corrosion, even caused the serious problems such as perforation, obstruction.At present, the steel-plastic composite pipe development is very fast, and it is just constantly replacing the pipeline of various metal pipes and other traditional material in every field.Disclose a kind of steel as Chinese patent and moulded the production method of multi-element composite pipes (number of patent application 201110197543.3), this invention is at first with HDPE or PVC modifying plastics and be made into plastic board/belt; The hollow reinforced rib of making the dual-side indent and mutually overlapping; With the notch welding of continuous welding equipment with the interior recess in stiffening rib bottom; Stiffening rib after welding is synchronizeed with plastic board/belt be wound around the formation inner tube wall; Cover glue, roll extrusion on Wrapping formed tube wall; Covered fiber net or winding fiber band and roll extrusion on the tube wall after roll extrusion; Cover glue and roll extrusion on layer of fibers, form the pipe outer wall; The tubing fixed length cutting of the 7th step will be completed; The stiffening rib port sealing of tubing one end after will cutting, the cement slurry for preparing in advance toward the interior injection of the square stiffening rib of the tubing the other end with grouting equipment; The tenth step: the tubing of filled with water material-mud is stood to holding up, fixing, cement slurry is solidified, be formed into product tubing.The advantage of this programme is to resist interior pressure, critical external compressive resistance, prevents breaking and reducing the tubing coefficient of thermal expansion and contraction, prevents that simultaneously stiffening rib from getting rusty.This patent technique is made too loaded down with trivial details, needs to adopt with HDPE or PVC plastics, cement slurry compound, and this has increased production difficulty on the one hand, directly affect again on the other hand between pipeline compound firmly, even cause pipeline breaking.

Summary of the invention

The purpose of this utility model is that a kind of high pressure resistant polynary PE plastic composite pipe will be provided, and existing composite pipe shock resistance is poor to solve, compressive strength high-technology problem not.

For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of high pressure resistant polynary PE plastic composite pipe, described water pipe innermost layer is UHMWPE core pipe, described UHMWPE core pipe is wrapped with the first stainless steel stratum reticulare, the first stainless steel stratum reticulare is wrapped with the PE middle close binder, be enclosed with the second stainless steel stratum reticulare on described PE middle close binder outer wall, the second stainless steel stratum reticulare is wrapped with the HDPE weathering layer.

The utlity model has that high-performance, high applicability, adhesive strength are high, the nontoxic characteristics such as non-stimulated, corrosion-resistant.Its UHMWPE core pipe has good wear resistance, impact resistance, and under the condition of equal load, the wear resistance of this pipe is even also good than steel pipe, comes out at the top in all engineering plastics.Its first, second stainless steel stratum reticulare can further increase UHMWPE core pipe compressive strength, impels high strength UHMWPE core pipe to be difficult for breaking, and has simultaneously good shock resistance, only needs thinner tube wall just can meet the demands during application.The PE binder course adopts thermoplastic elastomer (TPE), has improved core pipe and outer field 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 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 high pressure resistant polynary PE plastic composite pipe mainly is made of HDPE weathering layer 1, HDPE middle close binder 2, the first stainless steel stratum reticulare 3, the second stainless steel stratum reticulare 31, UHMWPE core pipe 5 etc.Below the several examples during high pressure resistant polynary PE plastic composite pipe is made.

Embodiment 1: by weight dropping in the First extruder hopper after 50 parts of UHMWPE resins, 5 parts of mixing of SBS styrene analog thermoplastic elastomer (TPU); By weight with 50 parts of PE resins, 0.2 part of sorbitol, 5 parts of input second extruder hoppers of polyethylene octene elastomer (POE); By weight with the HDPE(high density polyethylene (HDPE)) 80 parts of resins, composite filler (mica flour 20%, calcium sulfate crystal whiskers 35%, nano titanium oxide 15%, aluminium borate whisker 30%) drop in the 3rd extruder hopper after 13 parts, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.3～0.5 part of pentaerythritol ester, 0.5 part of septichen phenyl ester, 0.3 part of mixing of Tissuemat E; During production, the first extruder is extruded UHMWPE core pipe 5, after UHMWPE core pipe 5 process water-cooleds and sizing after extruding, Stainless Steel Wire is wrapped on UHMWPE core pipe 5 from the mode of the right and left with left-handed dextrorotation respectively, the angle that is wound around is 50 degree, make tubing axially and the hoop uniform stressed, form the first stainless steel stratum reticulare 3.Stainless steel stratum reticulare 3 after being wound around on UHMWPE core pipe 5 through heating, PE middle close binder 2 is extruded UHMWPE core pipe 5 parcels by the second extruder, after PE middle close binder 2 process water-cooleds and sizing after extruding, Stainless Steel Wire is wrapped on PE middle close binder 2 from the mode of the right and left with left-handed dextrorotation respectively, the angle that is wound around is 50 degree, make tubing axially and the hoop uniform stressed, form the second stainless steel stratum reticulare 31; After being wound around on HDPE middle close binder 4, through heating, extrude HDPE weathering layer 1 parcel by the 3rd extruder.Guarantee that between high-tensile steel wires and internal and external layer plastics, hot melt sticks to one, just become high pressure resistant polynary PE plastic composite pipe through cooling and shaping.

Embodiment 2: by weight dropping in the First extruder hopper after 50 parts of UHMWPE resins, 3 parts of mixing of SBS styrene analog thermoplastic elastomer (TPU); By weight with in 50 parts of PE resins, 0.7 part of sorbitol, 3 parts of input second extruder hoppers of polyethylene octene elastomer (POE); By weight with 80～85 parts of HDPE resins, composite filler (mica flour 20%, calcium sulfate crystal whiskers 35%, nano titanium oxide 15%, aluminium borate whisker 30%) drop in the 3rd extruder hopper after 7 parts, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.3 part of pentaerythritol ester, 0.4 part of septichen phenyl ester, 0.2 part of mixing of Tissuemat E; The mode of production is the same.

Embodiment 3: by weight dropping in the First extruder hopper after 50 parts of UHMWPE resins, 8 parts of mixing of SBS styrene analog thermoplastic elastomer (TPU); By weight with in 50 parts of PE resins, 1.1 parts of sorbitols, 8 parts of input second extruder hoppers of polyethylene octene elastomer (POE); By weight with 82 parts of HDPE resins, composite filler (mica flour 20%, calcium sulfate crystal whiskers 35%, nano titanium oxide 15%, aluminium borate whisker 30%) drop in the 3rd extruder hopper after 10 parts, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.4 part of pentaerythritol ester, 0.5 part of septichen phenyl ester, 0.3 part of mixing of Tissuemat E; The mode of production is the same.

Wherein four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant 1010) has antioxidation.The septichen phenyl ester has the uvioresistant effect.Tissuemat E has the effect of each packing of Uniform Dispersion.

Owing to having added the polyethylene octene elastomer in the HDPE 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.Make composite structure of the present utility model have good strength, wear-resisting property.

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	Composite pipe of the present invention
			Hydraulic pressure test (80 ℃, 4.5MPa) h	165h	﹥ 300h is without brittle failure
Thermostability (200 ℃) min	27	38
			Fracture elongation %	366	500
Flexural strength (MPa)	23	40
			Ring stiffness (KN/ ㎡)	22	36
Body tensile yield strength (MPa)	23	33
			Structural type	Solid netted	Solid netted
Working life	50	60
			Creep properties	Generally	Very little
Bursting pressure	Generally	Very high

The result shows: compare other like product, adopt the 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 utility model is not limited 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 domain of the present utility model.

Claims

1. high pressure resistant polynary PE plastic composite pipe, it is characterized in that described water pipe innermost layer is UHMWPE core pipe, described UHMWPE core pipe is wrapped with the first stainless steel stratum reticulare, the first stainless steel stratum reticulare is wrapped with the PE middle close binder, be enclosed with the second stainless steel stratum reticulare on described PE middle close binder outer wall, the second stainless steel stratum reticulare is wrapped with the HDPE weathering layer.