CN103062521A

CN103062521A - Poly ethylene (PE) combined pipe

Info

Publication number: CN103062521A
Application number: CN 201210324085
Authority: CN
Inventors: 周伟; 林风; 郭翠芳
Original assignee: 郭翠芳
Priority date: 2012-09-05
Filing date: 2012-09-05
Publication date: 2013-04-24

Abstract

A poly ethylene (PE) combined pipe is formed by combining a high-density poly ethylene (HDPE) core pipe, a stainless steel mesh layer, a PE combination layer and a modified PE layer, wherein the HDPE core pipe is located in an innermost layer. The stainless steel mesh layer is wrapped outside the HDPE core pipe, the PE combination layer is wrapped outside the stainless steel mesh layer, and the modified PE layer is wrapped outside the PE combination layer. The PE combined pipe has the advantages of being high in applicability and combination strength, non-toxic, free of stimulation, resistant to corrosion, difficult to rust and low in cost and the like. Modified PE pipes are chosen for the modified PE layer, the modified PE layer is resistant to corrosion, long in service life and capable of being resistant to corrosion of various corrosive media such as acid, alkali, salt and organic solvents, corrosion damage caused by electrocorrosion generated in materials such as steel pipes is avoided, and the service life of the modified PE layer can be 60-70 years. The stainless steel mesh layer can improve compressive strength of an HDPE combined pipe, and accidents of the HDPE compound pipe such as fracture and water leakage and the like cannot occur easily.

Description

The PE composite pipe

Technical field

The present invention relates to a kind of composite pipe, particularly a kind of PE composite pipe.

Background technique

Supplying drainage is widely used in the plumbing fields such as highway, railway bed, subway engineering, Landfills, tunnel, green belt, sports ground, and subirrigation and drainage system agriculture, gardening.The tradition supplying drainage mostly is metal, since long buried lower, easy especially rust corrosion, even cause the serious problems such as perforation, obstruction.

At present, plastic water pipe development is very fast, and it is taken as the leading factor mainly with polyethylene (PE) and PVC＝polyvinyl chloride (PVC) tubing, although solved to a certain extent the perishable problem of getting rusty of metal tube, ubiquity that shock resistance is poor, the not high defective of compressive strength.

Summary of the invention

The objective of the invention is to provide a kind of PE composite pipe, with solve the existing easy rust corrosion of tubing, be subject to climatic impact, loaded down with trivial details, fabricating cost is high, pipeline breaking, affects the technical problem such as firm between the pipeline thereby be easy to leak, wash out Bond.

For solving the problems of the technologies described above, technological scheme of the present invention is: a kind of PE composite pipe, this composite pipe is composited by HDPE core pipe, stainless steel stratum reticulare, PE binder course, modified PE layer, wherein the innermost layer is HDPE core pipe, described HDPE core pipe is wrapped with the stainless steel stratum reticulare, be enclosed with the PE binder course on the stainless steel stratum reticulare, the PE binder course is wrapped with the modified PE layer.

As preferably, axially be provided with the noise reduction muscle on the described HDPE core inner tube wall, noise reduction muscle cross section is equilateral triangle.

As preferably, described PE binder course is made by weight by following component: 50 parts of HDPE resins (high density polyethylene (HDPE)), 0.2～1.1 part of sorbitol, 3～8 parts of TPUEs (TPU).

As preferably, described modified PE layer is mainly made by weight by following component: 80～85 parts of HDPE resins, 5～10 parts in calcium carbonate, 1～5 part of calcium stearate, 2～3 parts of Nano titanium dioxides, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.3～0.5 part of pentaerythritol ester, 0.3～0.5 part of septichen phenyl ester, 0.2～0.3 part of Tissuemat E.

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.

Being coated on the outer PE binder course of high-tensile steel wires, is a kind of high-performance adhesive material, and simultaneously, the polar bond in its structure of molecule and steel have extremely strong adhesive property, have effectively solved the interface problem of steel-PE.Therefore, this tubing has overcome the common defective of directly extruding the compound PE composite pipe maximum that strengthens with steel wire or steel plate, nothing connects the factor between steel plate and the plastics, plastics are mechanically steel wire or steel plate to be coated on wherein, deposit or using process in temperature stress and inner pressure ring stress, make metal-plastic interface the gap occur, bad or tubing opening seals when bad when pipe end sealing, can cause that interlayer alters water, cause crush in the tubing bad.

The present invention have high applicability, adhesive strength high, nontoxic non-stimulated, corrosion-resistant, be difficult for getting rusty, the characteristics such as cost is low.What wherein the modified PE layer was selected is modified PE tubing, corrosion-resistant, long service life, can acid-and base-resisting, the erosion of the various Korrosionsmediums such as salt and organic solvent, unlike materials such as steel pipes, produce electro erosion, impel corrosion to damage, can reach 60～70 years its working life.The stainless steel stratum reticulare can increase HDPE composite pipe compressive strength, impels the HDPE composite pipe to be difficult for accidents such as breaking, leak.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is structure sectional view of the present invention.

Embodiment

Below in conjunction with the drawings and specific embodiments, technological scheme of the present invention is described in further detail.

Fig. 1 is structural representation of the present invention; Fig. 2 is structure sectional view of the present invention.By Fig. 1 in conjunction with Fig. 2 as can be known, this HDPE composite pipe mainly is made of HDPE core pipe 5, stainless steel stratum reticulare 3, modified PE layer 1, PE binder course 2 etc.The innermost layer is HDPE core pipe 5, axially is provided with noise reduction muscle 4 on HDPE core pipe 5 inwalls, and noise reduction muscle 4 cross sections are equilateral triangle.HDPE core pipe 5 is wrapped with stainless steel stratum reticulare 3, is enclosed with PE binder course 2 on the steel wire of stainless steel stratum reticulare 3, and PE binder course 2 is wrapped with modified PE layer 1.

Below be the several examples during the 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 inputs of TPUE First extruder hopper; After 80 parts of HDPE resins, 5 parts in calcium carbonate, 1 part of calcium stearate, 2 parts of Nano titanium dioxides, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.3 part of pentaerythritol ester, 0.3 part of septichen phenyl ester, 0.2 part of mixing of Tissuemat E, drop in second extruder hopper; The 3rd extruder prepares HDPE core pipe 5.During production, HDPE core pipe 5 is extruded by the 3rd extruder, behind water-cooled and sizing, Stainless Steel Wire is wrapped on the HDPE core pipe 5 from the mode of the right and left with left-handed dextrorotation respectively, and the angle of winding is 50 degree, so that tubing is axial and the hoop uniform stressed, form stainless steel stratum reticulare 3, stainless steel stratum reticulare 3 is extruded PE binder course 2 with stainless steel stratum reticulare 3 parcels through heating by second extruder, behind water-cooled and sizing, extrude modified PE layer 1 with PE binder course 2 parcels by the First extruder.Can guarantee that like this hot melt sticks to one between high-tensile steel wires and the internal and external layer HDPE, 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, 5 parts of inputs of TPUE First extruder hopper; After 83 parts of HDPE resins, 8 parts in calcium carbonate, 3 parts of calcium stearates, 2 parts of Nano titanium dioxides, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.4 part of pentaerythritol ester, 0.4 part of septichen phenyl ester, 0.2 part of mixing of Tissuemat E, drop in second extruder hopper; The 3rd extruder prepares HDPE core pipe 5.The mode of production is the same.

Embodiment 3: by weight with 50 parts of HDPE resins (high density polyethylene (HDPE)), 1.1 parts of sorbitols, 5 parts of inputs of TPUE First extruder hopper; After 85 parts of HDPE resins, 10 parts in calcium carbonate, 5 parts of calcium stearates, 3 parts of Nano titanium dioxides, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.5 part of pentaerythritol ester, 0.5 part of septichen phenyl ester, 0.3 part of mixing of Tissuemat E, drop in second extruder hopper; The 3rd extruder prepares HDPE core pipe 5.The mode of production is the same.

In order to verify effect of the present invention, embodiment 1-3 is compared than other company's like product, shown in the table specific as follows.

Table 1: the contrast and experiment between two kinds of water pipes

Project	Other company's water pipe	The present invention
			Ageing resistance (min)	5.01	8.23
Light shielding property	Generally	Excellent
			Structural type	Solid netted	Solid netted
Crosslinked uniformity	Generally	Excellent
			Crosslinking additives	Silane	Nothing
The chemical pure cleanliness	Relatively poor	Good
			Working life	50	60-70
Pliability	Generally	Better
			Physical and mechanical properties	Better	Excellent
Creep properties	Little	Little
			Anti-burst pressure	Generally	High

The result shows: compare other like product, adopt the HDPE tubing of the present invention's preparation, have better mechanical property and aging quality resistance.

Claims

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

2. PE composite pipe according to claim 1 is characterized in that axially being provided with the noise reduction muscle on the described PE core inner tube wall, and noise reduction muscle cross section is equilateral triangle.

3. PE composite pipe according to claim 1 is characterized in that described PE binder course made by weight by following component: 50 parts of HDPE resins, 0.2～1.1 part of sorbitol, 3～8 parts of TPUEs.

4. PE composite pipe according to claim 1, it is characterized in that described modified PE layer mainly made by weight by following component: 80～85 parts of HDPE resins, 5～10 parts in calcium carbonate, 1～5 part of calcium stearate, 2～3 parts of Nano titanium dioxides, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] 0.3～0.5 part of pentaerythritol ester, 0.3～0.5 part of septichen phenyl ester, 0.2～0.3 part of Tissuemat E.