CN208457367U

CN208457367U - Co-extruded PE gas pipe with low temperature resistance

Info

Publication number: CN208457367U
Application number: CN201820822312.4U
Authority: CN
Inventors: 高聪
Original assignee: Guangdong Liansu Technology Industrial Co Ltd
Current assignee: Guangdong Liansu Technology Industrial Co Ltd
Priority date: 2018-05-30
Filing date: 2018-05-30
Publication date: 2019-02-01
Anticipated expiration: 2028-05-30

Abstract

The utility model discloses a co-extruded PE gas pipe with low temperature resistance. It is compounded with the outer layer modifier, and the inner layer and the outer layer are combined by double-layer co-extrusion. The utility model adopts the co-modification of the light shielding agent and the ultraviolet ray absorbing agent in the outer layer, so that the anti-oxidation effect can reach the best. Modifiers such as nano-calcium carbonate make up for the shortcomings of a single modifier, so that the comprehensive properties of gas pipes are improved.

Description

Co-extrusion has low temperature resistant PE fuel gas conduit

Technical field

The utility model relates to PE combustion gas pipe material field, in particular to a kind of co-extrusion has low temperature resistant PE fuel gas conduit.

Background technique

With the continuous development of China's pipeline network of fuel gas in city, pipe long-distance conveying is most economical, safe means.It improves The discharge pressure of pipe network, can be with save the cost, while the problem of also bring some column.Due to the combustibility of combustion gas, explosion hazard, It is toxic, if quality problems once occurs in fuel gas transmission system, or even occurs gas leakage, fire, explosion, in The accidents such as poison not only directly influence the normal life of resident, while constituting great threat to the people's lives and property, as city The safety of the polyethylene pipe of city's gas transmission and distribution system is particularly important.Therefore, product is improved by material modification Performance is particularly important.It is fired at present in the northern area of China's cold -20 DEG C of use temperature~40 DEG C of PE combustion gas tubing Feed channel construction needs buried below ground 1.8m, and construction cost is big and long construction period.Combustion gas tubing is improved by material modification Comprehensive performance reduce construction cost to improve using silicon carbide and reduce buried depth.As PE combustion gas tubing produces The continuous promotion of energy is particularly important in production cost control, and two-shipper co-extrusion can effectively save production than single machine extrusion Cost and production efficiency, and the tubing of different function can be combined, to promote every comprehensive performance of tubing.

The standard storage period that the existing combustion gas tubing of combustion gas buried polyethylene (PE) pipe-line system executes is 2 years, existing Combustion gas tubing in north cold area, need buried 1.8 meters hereinafter, long construction period and at high cost.

Utility model content

The main purpose of the utility model is to propose that a kind of co-extrusion has low temperature resistant PE fuel gas conduit, it is intended to overcome above ask Topic.

To achieve the above object, the utility model proposes a kind of co-extrusion have low temperature resistant PE fuel gas conduit, including internal layer and Outer layer, the internal layer are combined by PE basis material and internal layer modified additive, and the outer layer is changed by PE basis material and outer layer Property auxiliary agent be combined, and internal layer and outer layer are merged using double-layer coextrusion mode.

Preferably, the internal layer modified additive includes one or more of plasticized modifier, filling modifying agent and color masterbatch.

Preferably, for the plasticized modifier based on POE, the filling modifying agent is EVA or nanometer calcium carbonate.

Preferably, the outer layer modified additive includes one or more of photomask agent, ultraviolet absorbing agent and color masterbatch.

Preferably, the internal layer modified additive accounts for the 11%~25% of internal layer total weight.

Preferably, by the percentages of inner layer material total weight, the plasticized modifier accounts for 8%~15%, the filling Modifying agent accounts for 2%~5%, and the color masterbatch accounts for 1%~5%.

Preferably, the outer layer modified additive accounts for the 1%~9% of outer layer total weight.

Preferably, by the percentages of cladding material total weight, photomask agent accounts for 0%~2%, and ultraviolet absorbing agent accounts for 0%~2%, color masterbatch accounts for 1%~5%.

Preferably, the PE basis material is made of one or more materials of PE80, PE100, PE100RC.

Preferably, the outer layer with a thickness of between 1.2-20mm.

Technical solutions of the utility model co-extrusion combustion gas tubing outer layer using photomask agent and ultraviolet light light absorbers It is common modified, reach antioxidant effect most preferably, uses the toughener based on POE in the internal layer of co-extrusion combustion gas tubing, simultaneously It is aided with the shortcomings that modifying agent such as EVA or nanometer calcium carbonate make up single modifying agent, proposes combustion gas tubing items comprehensive performance It is high.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.

Fig. 1 is the structural schematic diagram of an embodiment of the present invention；

The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, fall within the protection scope of the utility model.

It is to be appreciated that if related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding, Afterwards ...), then directionality instruction is only used for explaining opposite between each component under a certain particular pose (as shown in the picture) Positional relationship, motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.

In addition, if relating to the description of " first ", " second " etc. in the utility model embodiment, " first ", " the Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one A this feature.It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve The combination of case is not present, also not within the protection scope of the requires of the utility model.

As shown in Figure 1, the utility model proposes a kind of co-extrusions to have low temperature resistant PE fuel gas conduit, including internal layer and outer layer, The internal layer is combined by PE basis material and internal layer modified additive, and the outer layer is by PE basis material and outer layer modified additive It is combined, and internal layer and outer layer are merged using double-layer coextrusion mode.

Preferably, the outer layer with a thickness of between 1.2-20mm.

The internal layer of the utility model has low temperature resistance excellent, and outer layer has anti-aging property excellent, the double-layer structure It is realized by the material co-extrusion technology of same resin base, each interlayer mutually merges, and never will appear each layer point in prolonged application From the problem of.

Compare the advantage of the prior art:

Advantage one: combustion gas tubing outer layer can be shielded effectively and absorb ultraviolet light, be improved the weather resistance of tubing.

Advantage two: the internal layer of combustion gas tubing uses the toughening of a variety of modifying agent, and while toughness improves, intensity is also had The shortcomings that being improved, making up single modifying agent.

Advantage three: combustion gas tubing uses double-layer coextrusion technology, and the tubing of different performance is embodied on same tubing, is reached simultaneously To the purpose of save the cost.

The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model, It is all under the inventive concept of the utility model, equivalent structure made based on the specification and figures of the utility model becomes It changes, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.

Claims

1. Co-extruded PE gas pipe with low temperature resistance, which is characterized in that it includes an inner layer and an outer layer, the inner layer is composed of a PE matrix material and an inner layer modification aid, and the outer layer is composed of a PE matrix material. It is compounded with the outer layer modifier, and the inner layer and the outer layer are combined by double-layer co-extrusion.

2. The co-extruded PE gas pipe with low temperature resistance as claimed in claim 1, wherein the inner layer modification aid comprises one of a toughening modifier, a filling modifier and a color masterbatch or several.

3 . The co-extruded PE gas pipe with low temperature resistance as claimed in claim 2 , wherein the toughening modifier is mainly POE, and the filling modifier is EVA or nano calcium carbonate. 4 .

4 . The co-extruded PE gas pipe with low temperature resistance according to claim 1 , wherein the outer layer modification assistant comprises one or more of a light shielding agent, an ultraviolet absorber and a color masterbatch. 5 .

5 . The co-extruded PE gas pipe with low temperature resistance according to claim 1 , wherein the inner layer modification aid accounts for 11% to 25% of the total weight of the inner layer. 6 .

6 . The co-extruded PE gas pipe with low temperature resistance according to claim 2 , wherein the toughening modifier accounts for 8% to 15% according to the percentage of the total weight of the inner layer material, and the filler The modifier accounts for 2% to 5%, and the color masterbatch accounts for 1% to 5%.

7 . The co-extruded PE gas pipe with low temperature resistance according to claim 1 , wherein the outer layer modification assistant accounts for 1% to 9% of the total weight of the outer layer. 8 .

8 . The co-extruded PE gas pipe with low temperature resistance as claimed in claim 3 , wherein the light shielding agent accounts for 0% to 2% and the ultraviolet absorber accounts for 0% to 2% according to the percentage of the total weight of the outer layer material. 9 . 2%, color masterbatch accounts for 1% to 5%.

9 . The co-extruded PE gas pipe with low temperature resistance according to claim 1 , wherein the PE base material is made of one or more materials of PE80, PE100 and PE100RC. 10 .

10 . The co-extruded PE gas pipe with low temperature resistance according to claim 1 , wherein the thickness of the outer layer is between 1.2-20 mm. 11 .