CN1346738A - Composite silane cross-linked polyethylene pipe with insulating foam layer - Google Patents
Composite silane cross-linked polyethylene pipe with insulating foam layer Download PDFInfo
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- CN1346738A CN1346738A CN 01128994 CN01128994A CN1346738A CN 1346738 A CN1346738 A CN 1346738A CN 01128994 CN01128994 CN 01128994 CN 01128994 A CN01128994 A CN 01128994A CN 1346738 A CN1346738 A CN 1346738A
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- insulating foam
- foam layer
- linked polyethylene
- polyethylene pipe
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Abstract
A composite silane cross-linked polyethylene pipe with insulating foam layer is composed of the internal silance cross-linked polyethylene layer, the thermoplastic plastic structure layer on the outside surface of said internal layer, and insulating foam layer on the outside surface of said plastic structure layer. Its advantage is high insualting, flame-retarding and antifreezing performance.
Description
Technical field:
What the present invention relates to is a kind of composite pipe, particularly be a kind ofly to adopt heat fusing to connect or the composite silane cross-linked polyethylene pipe that insulating foam layer is arranged of bonding connection.
Background technique:
Silane crosslinked polyethylene pipe and application development polyethylene pipe faster compare, because polyethylene is through the chemical crosslinking of silane, its linear structure is transformed into tridimensional network, obviously improved poly performance, its heat resistance and hot strength, heat-resistant aging, environmental stress crack resistance, electrical insulating property, barrier, anti-gasoline and aromatic hydrocarbons, creep resistance, cold cracking etc. all are greatly improved, the application of original polyethylene pipe is widened, and some difficult problems that exist in originally using are overcome.Particularly silane crosslinked polyethylene pipes is difficult for welding, is difficult for bonding difficulty, adopting compound one deck thermoplastic of extruding on its tube wall, thereby thoroughly solved after this difficult problem, this pipeline will replace polyethylene greatly, more will replace more metals with managing.Silane commissure polyethylene pipe can be used for hot and cold water supply system for building, air conditioning cooling water system for building, the conveying of various fluids in residential houses central heating system, ground heating system, pipeline potable water system, the food industry, chemical industry, petroleum industry FLUID TRANSPORTATION, refrigeration system and water treatment system, other industrial pipe.This pipe even may be used for the city or the pipeline system of sub-district central heating.Though silane crosslinked polyethylene pipes is because of the characteristic of plastic materials and certain pipeline wall thickness, the medium of carrying there are certain insulation, antifreeze function, but as will be in a large number at the adopted silane crosslinked polyethylene pipes of above-mentioned application, there are better insulation, antifreeze ability can cut down the consumption of energy undoubtedly, reduce pipeline and carry cost, improve the process advantage of pipeline, to the heat supply heating of the north and extremely frigid zones and to need antifreeze pipeline be important.Do not appear in the newspapers in the mode of particularly on silane crosslinked polyethylene pipe, making insulating foam layer on the plastic tube at present, more especially by compound one deck thermoplastic structure layer of extruding, outer wall in the composite silane cross-linked polyethylene pipe road is made one deck insulating foam layer, and the mode that solves the insulation of conduits fused, pipe bonding and pipeline is not simultaneously more appeared in the newspapers.
Summary of the invention:
The objective of the invention is in order to overcome above deficiency, provide a kind of insulation, fire-retardant, adiabatic and antifreeze ability strong, extensively can adopt heat fusing to connect in the application in engineering field or the composite silane cross-linked polyethylene pipe of bonding connection.
The object of the present invention is achieved like this:
The present invention has the composite silane cross-linked polyethylene pipe of insulating foam layer to comprise the organosilane crosslinked polyethylene internal layer, and compound extrusioning thermoplastic plastic's construction layer on inner layer outer wall is compounded with insulating foam layer at thermoplastic structure layer outer wall.
Above-mentioned thermoplastic structure layer adopts blend or its nano grade polymer of polyolefin polymer or itself and inorganic matter, or the blend of PVC and/or chlorinated polynvinyl chloride (CPVC) or PVC and inorganic matter or the blend of haloflex and inorganic matter or their nano grade polymer are made.
Above-mentioned insulating foam layer adopts the polyolefin polymer of flame retarding or itself and the blend material of inorganic matter or the inorganic material of flame retardancy and adiabaticity to make.
Between above-mentioned the organosilane crosslinked polyethylene internal layer and thermoplastic structure layer, the binder structure layer is arranged respectively between thermoplastic structure layer and the insulating foam layer.
Above-mentioned insulating foam layer outermost surface has the close layer of matter.
The present invention has realized the insulating foam layer of compound one deck flame retarding or flame retardancy or adiabaticity on silane crosslinked polyethylene pipes, improved the insulation of silane crosslinked polyethylene pipes, fire-retardant and antifreeze performance greatly, enlarged this pipe in the application in engineering field.
Description of drawings:
Fig. 1 is the embodiment of the invention 1 figure.
Fig. 2 is the embodiment of the invention 2 figure.
Embodiment:
Embodiment 1:
Fig. 1 has provided the embodiment of the invention 1 structural representation.Referring to Fig. 1, organosilane crosslinked polyethylene internal layer 1, the thermoplastic structure layer 2 that compound extruded polyolefin polymer (or blend of polyolefin polymer and inorganic matter) forms on inner layer outer wall, thermoplastic structure layer skin is coated with insulating foam layer 3.
Embodiment 2:
Fig. 2 has provided the structural representation of the embodiment of the invention 2.Present embodiment is basic and embodiment 1 is same.Not existing together is between organosilane crosslinked polyethylene internal layer 3 and the thermoplastic structure layer 4, and adhesives layer 6,7 is arranged respectively between thermoplastic structure layer 4 and the insulating foam layer 5, in the periphery of insulating foam layer 5 the close layer 8 of matter is arranged.
Claims (9)
1, a kind of composite silane cross-linked polyethylene pipe that insulating foam layer is arranged is characterized in that comprising the organosilane crosslinked polyethylene internal layer, and compound extrusioning thermoplastic plastic's construction layer on inner layer outer wall is compounded with insulating foam layer at thermoplastic structure layer outer wall.
2, the composite silane cross-linked polyethylene pipe that insulating foam layer is arranged according to claim 1, it is characterized in that the thermoplastic structure layer adopts blend or its nano grade polymer of polyolefin polymer or itself and inorganic matter, or the blend of PVC and/or chlorinated polynvinyl chloride (CPVC) or PVC and inorganic matter or the blend of haloflex and inorganic matter or their nano grade polymer are made.
3, the composite silane cross-linked polyethylene pipe that insulating foam layer is arranged according to claim 1 and 2 is characterized in that insulating foam layer adopts the polyolefin polymer of flame retarding or itself and the blend material of inorganic matter or the inorganic material of flame retardancy and adiabaticity to make.
4, the composite silane cross-linked polyethylene pipe that insulating foam layer is arranged according to claim 1 and 2, it is characterized in that between organosilane crosslinked polyethylene internal layer and thermoplastic structure layer, the binder structure layer being arranged respectively between thermoplastic structure layer and the insulating foam layer.
5, the composite silane cross-linked polyethylene pipe that insulating foam layer is arranged according to claim 3, it is characterized in that at internal layer be between organosilane crosslinked polyethylene internal layer and the thermoplastic structure layer, the binder structure layer is arranged between thermoplastic structure layer and the insulating foam layer.
6, the composite silane cross-linked polyethylene pipe that insulating foam layer is arranged according to claim 1 and 2 is characterized in that the insulating foam layer outermost surface has the close layer of matter.
7, the composite silane cross-linked polyethylene pipe that insulating foam layer is arranged according to claim 3 is characterized in that the insulating foam layer outermost surface has the close layer of matter.
8, the composite silane cross-linked polyethylene pipe that insulating foam layer is arranged according to claim 4 is characterized in that the insulating foam layer outermost surface has the close layer of matter.
9, the composite silane cross-linked polyethylene pipe that insulating foam layer is arranged according to claim 5 is characterized in that the insulating foam layer outermost surface has the close layer of matter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01128994 CN1346738A (en) | 2001-10-26 | 2001-10-26 | Composite silane cross-linked polyethylene pipe with insulating foam layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01128994 CN1346738A (en) | 2001-10-26 | 2001-10-26 | Composite silane cross-linked polyethylene pipe with insulating foam layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1346738A true CN1346738A (en) | 2002-05-01 |
Family
ID=4668801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01128994 Pending CN1346738A (en) | 2001-10-26 | 2001-10-26 | Composite silane cross-linked polyethylene pipe with insulating foam layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1346738A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057723A (en) * | 2018-08-07 | 2018-12-21 | 河北华北石油荣盛机械制造有限公司 | A kind of core layer foaming complex heat-preservation abrasion-proof oil conduit |
-
2001
- 2001-10-26 CN CN 01128994 patent/CN1346738A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057723A (en) * | 2018-08-07 | 2018-12-21 | 河北华北石油荣盛机械制造有限公司 | A kind of core layer foaming complex heat-preservation abrasion-proof oil conduit |
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| RJ01 | Rejection of invention patent application after publication |