CN207073641U - A kind of PEX pipes with anti-oxygen diffusion layer - Google Patents

Abstract

The utility model discloses a kind of PEX pipes with anti-oxygen diffusion layer, including PEX inner tubes, the outside of the PEX inner tubes is provided with anti-oxygen diffusion layer, and the outer surface of PEX inner tubes and the inner surface of anti-oxygen diffusion layer are fixedly linked, the anti-oxygen diffusion layer includes HDPE antiseepage films and LDPE antiseepage films, the LDPE antiseepage films are located at the outside of HDPE antiseepage films, are fixedly linked between the HDPE antiseepage films and LDPE antiseepage films, and the thickness of the HDPE antiseepage films is 0.12 0.38mm.The PEX with anti-oxygen diffusion layer is managed, anti- oxygen diffusion layer is provided with the outside of PEX inner tubes, anti- oxygen diffusion layer includes HDPE antiseepage films and LDPE antiseepage films, and HDPE antiseepage films are high density polyethylene (HDPE) antiseepage film, and LDPE antiseepage films are low density polyethylene (LDPE) antiseepage film, the antiseepage oxygen effect of PEX inner tubes is lifted by anti-oxygen diffusion layer, antiseepage oxygen effect is preferable, beneficial to promoting the use of, solves existing PEX pipes, antiseepage oxygen effect is poor, the problem of being unfavorable for promoting the use of.

Description

A kind of PEX pipes with anti-oxygen diffusion layer

Technical field

It the utility model is related to PEX Manifold technologies field, specially a kind of PEX pipes with anti-oxygen diffusion layer.

Background technology

PEX pipes are also known as crosslinked polyethylene pipe, and it is made up of polyethylene material, and polyethylene linearity molecular structure is passed through into physics And chemical method is changed into three-dimensional web material network structure, so that the performance of polyethylene is improved.Manufacture method：En Geerfa：Again Claim peroxide method, in the fabrication process, using crosslinking matchmaker's peroxide, by high temperature, high pressure polyethylene long chain Between form chemical bond, i.e., so-called crosslinking.This cross-linking method is named as PX-a.Silane thermal decomposition process：In extrusion, by silane It is mixed into raw material.Polyethylene Chain is combined with silicon molecule, is classified as PX-b；The amount of antioxidant is to influence the tubing longevity in material One of most important factor of life.Radiation method：Polyethylene is radiated with γ or β rays, so as to physically form crosslinking, Referred to as PX-c；Azo method：Formed and be crosslinked by azo medium, be referred to as PX-d, be not commercially produced at present.Commercialization PEX pipes are at present first three, and the performance of three kinds of PEX pipes is incomplete same, are mainly manifested in heat resistance (calorific intensity), resist There is some difference for creep ability and anti-stress cracking.In general, in macromolecular structure, big point of two-dimensional network structure Son, its warm-up movement are easier, the macromolecular of three-dimensional structure, and its warm-up movement is slightly difficult.PEXa macromolecular is with two-dimension netted Based on structure, and PEXb and PEXc macromolecular is then based on three-dimensional structure.Therefore, when the same polyethylene of use does base Plinth raw material, when the degree of cross linking is identical, PEXb and PEXc heat resistance, creep resisting ability and anti-stress cracking are higher than PEXa.The PEXa degree of cross linking is improved, their this difference will reduce.

The primary raw material of production PEX pipes is HDPE, and the auxiliary agent such as initiator, crosslinking agent, catalyst, if any particular/special requirement Other modification agents can also be added.PEX pipes are using advanced one-step method (MONSOIL methods) technology manufacture in the world, using common Polyethylene raw material adds Silane Grafted material, forms chemical covalent bonds in polymer macromolecule interchain to substitute original Van der Waals Power, so as to form the crosslinked polyethylene of three-dimensional interlinkage network structure, its degree of cross linking makes it have excellent reason up to 60%~89% Change performance.Production technology：Pretreatment of raw material+auxiliary agent preparation → mixing → fusion-grafting extrusion → tube forming → crosslinking → inspection Packaging → finished product.The effect of additive, purpose：Crosslinking agent is to play splitting action to its former linearity molecular structure to form grafted material, And then form tridimensional network.The effect of antioxidant and color tablets is to improve the rotproofness of PEX pipes, prevents daylight long-term irradiation from sending out Biological change, the long-term erosion of ultraviolet can be resisted, so as to extend its service life.

At present, existing PEX pipes, antiseepage oxygen effect is poor, is unfavorable for promoting the use of.

Utility model content

（One）The technical problem of solution

In view of the shortcomings of the prior art, the utility model provides a kind of PEX pipes with anti-oxygen diffusion layer, solves existing PEX pipe, antiseepage oxygen effect is poor, the problem of being unfavorable for promoting the use of.

（Two）Technical scheme

To realize object above, the utility model is achieved by the following technical programs：It is a kind of with anti-oxygen diffusion layer PEX is managed, including PEX inner tubes, and the outside of the PEX inner tubes is provided with anti-oxygen diffusion layer, and the outer surface of PEX inner tubes and anti-oxygen diffusion layer Inner surface is fixedly linked, and the anti-oxygen diffusion layer includes HDPE antiseepage films and LDPE antiseepage films, and the LDPE antiseepage films are located at HDPE The outside of antiseepage film, is fixedly linked between the HDPE antiseepage films and LDPE antiseepage films, and the thickness of the HDPE antiseepage films is 0.12-0.38mm。

Preferably, the HDPE antiseepage films are high density polyethylene (HDPE) antiseepage film.

Preferably, the LDPE antiseepage films are low density polyethylene (LDPE) antiseepage film.

Preferably, the thickness of the LDPE antiseepage films is the half of HDPE antiseepage film thicknesses.

（Three）Beneficial effect

The utility model provides a kind of PEX pipes with anti-oxygen diffusion layer, possesses following beneficial effect：

（1）, should with anti-oxygen diffusion layer PEX manage, be provided with anti-oxygen diffusion layer in the outside of PEX inner tubes, anti-oxygen diffusion layer includes HDPE antiseepage films and LDPE antiseepage films, HDPE antiseepage films are high density polyethylene (HDPE) antiseepage film, and LDPE antiseepage films are low density polyethylene Alkene antiseepage film, the antiseepage oxygen effect of PEX inner tubes is lifted by anti-oxygen diffusion layer, antiseepage oxygen effect is preferable, beneficial to promoting the use of, solves Existing PEX pipes, antiseepage oxygen effect is poor, the problem of being unfavorable for promoting the use of.

（2）, should with anti-oxygen diffusion layer PEX manage, on the one hand, HDPE antiseepage films have common waterproof material incomparable There is high-strength pulling-resisting to stretch mechanicalness for anti-seepage effect, HDPE antiseepage films, and its excellent elasticity and deformability are highly suitable for it Expansion or shrinkage basal plane, it can effectively overcome the differential settlement of basal plane, water vapor permeability coefficients are high, on the other hand, LDPE antiseepages Film has good antiseptic property, electrical property, humidity resistance, leakage performance, tensile strength high, can extend making for PEX inner tubes With the life-span, beneficial to promoting the use of.

Brief description of the drawings

Fig. 1 is the utility model structure diagram；

Fig. 2 is the structural representation of the anti-oxygen diffusion layer of the utility model.

In figure：1 PEX inner tubes, 2 anti-oxygen diffusion layers, 201 HDPE antiseepage films, 202 LDPE antiseepage films.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belong to the scope of the utility model protection.

Fig. 1-2 is referred to, the utility model provides a kind of technical scheme：A kind of PEX pipes with anti-oxygen diffusion layer, including PEX inner tubes 1, the outside of PEX inner tubes 1 is provided with anti-oxygen diffusion layer 2, and the outer surface of PEX inner tubes 1 and the inner surface of anti-oxygen diffusion layer 2 are consolidated Fixed to be connected, anti-oxygen diffusion layer 2 includes HDPE antiseepage films 201 and LDPE antiseepage films 202, and LDPE antiseepage films 202 are located at HDPE antiseepage films 201 outside, it is fixedly linked between HDPE antiseepage films 201 and LDPE antiseepage films 202, the thickness of HDPE antiseepage films 201 is 0.12- 0.38mm。

HDPE antiseepage films 201 are high density polyethylene (HDPE) antiseepage film.

LDPE antiseepage films 202 are low density polyethylene (LDPE) antiseepage film.

The thickness of LDPE antiseepage films 202 is the half of the thickness of HDPE antiseepage films 201.

In summary, the PEX that should carry anti-oxygen diffusion layer is managed, and anti-oxygen diffusion layer 2, anti-oxygen diffusion layer are provided with the outside of PEX inner tubes 1 2 include HDPE antiseepage films 201 and LDPE antiseepage films 202, and HDPE antiseepage films 201 are high density polyethylene (HDPE) antiseepage film, LDPE antiseepages Film 202 is low density polyethylene (LDPE) antiseepage film, lifts the antiseepage oxygen effect of PEX inner tubes 1 by anti-oxygen diffusion layer 2, antiseepage oxygen effect compared with It is good, beneficial to promoting the use of, solve existing PEX pipes, antiseepage oxygen effect is poor, the problem of being unfavorable for promoting the use of.

And, on the one hand, HDPE antiseepage films 201 have the incomparable anti-seepage effect of common waterproof material, HDPE antiseepages There is film 201 high-strength pulling-resisting to stretch mechanicalness, and its excellent elasticity and deformability make it be highly suitable for expansion or shrinkage basal plane, The differential settlement of basal plane can effectively be overcome, water vapor permeability coefficients are high, and on the other hand, LDPE antiseepage films 202 have good Antiseptic property, electrical property, humidity resistance, leakage performance, tensile strength are high, can extend the service life of PEX inner tubes 1, be beneficial to Promote the use of.

It should be noted that herein, such as first and second or the like relational terms are used merely to a reality Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include Intrinsic key element.

While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (4)

1. a kind of PEX pipes with anti-oxygen diffusion layer, including PEX inner tubes（1）, it is characterised in that：The PEX inner tubes（1）Outside Provided with anti-oxygen diffusion layer（2）, and PEX inner tubes（1）Outer surface and anti-oxygen diffusion layer（2）Inner surface be fixedly linked, the antiseepage oxygen Layer（2）Including HDPE antiseepage films（201）With LDPE antiseepage films（202）, the LDPE antiseepage films（202）Positioned at HDPE antiseepage films （201）Outside, the HDPE antiseepage films（201）With LDPE antiseepage films（202）Between be fixedly linked, the HDPE antiseepage films （201）Thickness be 0.12-0.38mm.

A kind of 2. PEX pipes with anti-oxygen diffusion layer according to claim 1, it is characterised in that：The HDPE antiseepage films （201）For high density polyethylene (HDPE) antiseepage film.

A kind of 3. PEX pipes with anti-oxygen diffusion layer according to claim 1, it is characterised in that：The LDPE antiseepage films （202）For low density polyethylene (LDPE) antiseepage film.

A kind of 4. PEX pipes with anti-oxygen diffusion layer according to claim 1, it is characterised in that：The LDPE antiseepage films （202）Thickness be HDPE antiseepage films（201）The half of thickness.