CN101403449B

CN101403449B - PAP three-layer composite pipe

Info

Publication number: CN101403449B
Application number: CN200810180312XA
Authority: CN
Inventors: 郑斗熙; 梁祐赈
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-24
Filing date: 2008-11-24
Publication date: 2010-07-21
Anticipated expiration: 2028-11-24
Also published as: CN101403449A

Abstract

The invention aims at providing a composite pipe of good quality and environmental protection which can compound PE-RT (heat-resistant polyethylene) and PB (polybutene) very well; a PAP three-layer composite pipe which is provided by the invention is formed by compounding an outer layer, a middle layer and an inner layer together; the outer layer is PE-RT; the middle layer is binding resin; the inner layer is PB; and the binding resin is a anhydride modified vinyl polymer. The PAP three-layer composite pipe uses the environmental protection material of the binding resin for compounding the PB and the PE-RT together very well, and breaks the history that the PB and the PE-RT are mutually exclusive and never joined together; on the precondition that the using performance keeps unchanged, the advantages of PB drinking water performance can be used for overcoming the high price thereof so as to reduce the cost.

Description

The PAP three-layer composite pipe

Technical field

The present invention relates to a kind of composite pipe, particularly, relate to a kind of tubing that is combined with each other by three layers of different high molecular polymer.

Background technique

PB (polybutylene) is a kind of macromolecule inert polymer material, and pliability is better, has very high chemical stability, microorganism can not grow by parasitism, be the potable water feedwater piping material that meets sanitary standard at present in the world most, but the PB price is higher, has limited it and has been used for water supply facilities.PE-RT (heat-proof polythene) tubing is in light weight, and pliability is strong, good bandability, though its environmental protection index is not so good as PB, its price is lower, therefore uses more in water supply facilities.

Summary of the invention

In view of the above, PB and PE-RT have some complementary pluses and minuses, if can make a kind of skin is PE-RT, internal layer is the pipeline of PB, their characteristic is maximized favourable factors and minimized unfavourable ones, make this tubing that meets have bigger using value, but PB and PE-RT repel mutually, can not directly be combined with each other.

The composite pipe that the purpose of this invention is to provide a kind of high-quality environmental protection that PE-RT (heat-proof polythene) and PB (polybutylene) are combined with each other well.

The present invention has utilized binding resin (Adhesive resin) as the mesosphere outer PE-RT and internal layer PB to be combined with each other, and gets the English initial of these three kinds of materials, and this three-layer composite pipe provided by the invention is called the PAP three-layer composite pipe.

Specifically, PAP three-layer composite pipe provided by the invention is by skin, middle level and internal layer are combined with each other and form, described skin is a heat-proof polythene, described middle level is a binding resin, described internal layer is a polybutylene, described polybutylene is preferably PB4237, described binding resin can be anhydride modified vinyl polymer, for example can be anhydride modified ethylene-vinyl acetate copolymer (being called for short EVA modification binding resin), anhydride modified linear low density of polyethylene polymer (being called for short the LLDPE binding resin), anhydride modified polyacrylic polymer (being called for short the PP binding resin), anhydride modified high density polyethylene polyethylene polymers (being called for short the HDPE binding resin) or model are the compound anhydride modified vinyl polymer of AP P553A.The thickness in middle level is preferably 0.06-0.1mm.The thickness of described internal layer is preferably 0.2-0.5mm.

PAP three-layer composite pipe provided by the invention, utilize this environment-friendly materials of binding resin well PB and PE-RT to be compounded in together, broken PB and PE-RT repels mutually, the history that is bonded together is not arranged always, under the constant precondition of usability, utilize the strong point of PB to overcome its high price again, thereby reduce cost, just both utilized nontoxic, the characteristics that prevent microbial growth of PB, also utilized the PE-RT advantage lower than the cost of PB.More specifically have the following advantages:

1, long service life

The PAP three-layer composite pipe that adopts 100% pure PB potable water raw material and heating 100% pure PE-RT raw material and three kinds of raw materials of binding resin to be composited can both keep good ageing resistance under common any temperature and pressure condition, working life is longer.

2, nontoxic

PB is the avirulent raw material of generally acknowledging in the world today, and is different with other plastics series tubing, has been widely used as drinking-water pipe abroad.

3, anti-bursting by freezing and heat resistance

Its Young's modulus of PAP tubing is big, its good frost resistance, particularly its heat resistance extra-heavy in the resin pipeline.

4, shock resistance

PAP tubing pliability is strong, and elasticity is big, because of external impact causes the probability damaged less.

5, corrosion resistance

The corrosion resistance of PAP tubing is strong.Not influenced by electrolyte.

6, pliability is from heavy and light

PAP tubing is lighter and soft than other tubing, need not the application of force get final product natural torsion, therefore easily in the narrow space construction, and also carrying easily.

7, creep resistance

The heat-resisting croop property excellence of PAP tubing under the continuous high temperature situation can used below 95 ℃ for a long time, and maximum operation (service) temperature can reach 110 ℃.

8, heat insulating ability

Because heat conductivity factor only be steel pipe 1/250, copper pipe 1/1700, so its insulation, cold insulation effect are strong, therefore be applicable to the usefulness of cold and hot water supply and heating.

9, Economy

PAP tubing is in light weight, and pliability is strong, and good bandability also can carry out bending without elbow (Elbow).Easy operating and construction.Long because of service life, rate of fault is low, required manpower reaches composite factors such as the duration is short less, so it is a kind of economical tubing.

10, the ultraviolet ability of opposing is strong, can prevent the growth of algae thing

Polybutylene (PB) is a kind of macromolecule inert polymer material, has very high chemical stability.Microorganism can not grow by parasitism, is the potable water water supply facilities that meets sanitary standard at present in the world most.

11, good workability

No matter be the plasticity of PB and PE-RT material itself, feasibility and durability that reliable mutually connection similar with other or the inhomogeneity material is made up, PB and PER are good.

Description of drawings

Fig. 1 is the structural representation of PAP three-layer composite pipe provided by the invention.

Among the figure:

The 1-skin; The 2-middle level; The 3-internal layer.

Embodiment

As shown in Figure 1, PAP three-layer composite pipe provided by the invention is combined with each other by skin 1, middle level 2 and internal layer 3 and forms, described outer 1 is heat-proof polythene, described middle level 2 is a binding resin, described internal layer 3 is polybutylene (PB4237), and described binding resin is the anhydride modified vinyl polymer of AP P553A or other types.

The external diameter specification can be d16, d20, d25, d32, d40, d50; The thickness in middle level can be 0.06-0.10mm; The thickness of internal layer can be 0.20-0.50mm.

Making the PAP three-layer composite pipe by above-mentioned specification can be that 1.0MPa, operating temperature are to use under 0 ℃～110 ℃ the condition at pressure maximum, and profile and composite structure can not be damaged.

This PAP three-layer composite pipe can be used for following purposes:

1, feedwater (sanitary pipe) and hot-water line;

2, direct drinking water project project;

3, agricultural is used with gardening and is managed;

4, snow removing is with managing (Road Heating);

5, fire-fighting is used with automatic sprinkler fire-extinguishing system (Sprinkler) and is managed;

6, heating pipe;

7, industrial water supply is with managing;

8, hot spring is with managing;

9, adopt the warm water tube of solar heat dwelling house;

10, radiator;

11, central air-conditioner.

Claims

1.PAP three-layer composite pipe, it is characterized in that being combined with each other by outer, middle level and internal layer forms, and described skin is a heat-proof polythene, described middle level is a binding resin, described internal layer is a polybutylene, and described binding resin is anhydride modified vinyl polymer, and the thickness in described middle level is 0.06-0.1mm.

2. PAP three-layer composite pipe according to claim 1, the thickness that it is characterized in that described internal layer is 0.2-0.5mm.