CN204647581U - Polypropylene random copolymer pipe - Google Patents
Polypropylene random copolymer pipe Download PDFInfo
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- CN204647581U CN204647581U CN201520270058.8U CN201520270058U CN204647581U CN 204647581 U CN204647581 U CN 204647581U CN 201520270058 U CN201520270058 U CN 201520270058U CN 204647581 U CN204647581 U CN 204647581U
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- atactic copolymerized
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- tube material
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Abstract
A kind of atactic copolymerized polypropene (PP-R) pipe, comprise interior body layer and outer functional layer, the material of described interior body layer is atactic copolymerized polypropene (PP-R) tube material, the material of described outer functional layer is modified polypropene (PP) tube material, is also provided with a co-extrusion layer be composited by described atactic copolymerized polypropene (PP-R) tube material and described modified polypropene (PP) tube material between described outer functional layer and described interior body layer.Atactic copolymerized polypropene (PP-R) pipe that the utility model proposes has good low-temperature impact-resistant performance, prevents the low temperature brittleness of tubing, can carry out installation at subzero 10 DEG C.There is good amalgamation with atactic copolymerized polypropene (PP-R) tube material of internal layer simultaneously, the contact segment of layer materials combines together, and then layer materials also defines one, improve thermostability under the hydrostatic strength of atactic copolymerized polypropene (PP-R) pipe and hydrostatic state.
Description
Technical field
The utility model relates to a kind of low temperature resistant atactic copolymerized polypropene (PP-R) pipe.
Background technique
Atactic copolymerized polypropene (PP-R) Guan Yinqi possesses good high temperature resistant withstand voltage properties, is widely used in cold hot water piping system in building, comprises industry and civilian hot and cold water, potable water and heating system.But due to the microstructure such as molecular weight and distribution thereof of atactic copolymerized polypropene (PP-R) tube material; determine atactic copolymerized polypropene (PP-R) pipe and show certain fragility when low temperature; mention especially in building water supply polypropylene pipe engineering legislation GB/T50349-2005: " when constructing in the winter time; the low temperature brittleness of atactic copolymerized polypropene (PP-R) pipe should be noted "; so when temperature should stop construction lower than 0 DEG C, or anti-frost protection measure to be carried out when atactic copolymerized polypropene (PP-R) pipe is used for outdoor.Both bring difficulty to construction like this, again limit application area.
For overcoming the low temperature brittleness of atactic copolymerized polypropene (PP-R) pipe, prior art adds a certain proportion of plasticizer in atactic copolymerized polypropene (PP-R) tube material.As everyone knows, plasticizer is improving the pliability of atactic copolymerized polypropene (PP-R) pipe under low-temperature condition, increase anti-impact force, prevent frangible easily split while, reduce thermostability under the hydrostatic strength of atactic copolymerized polypropene (PP-R) pipe and hydrostatic state.Research shows, atactic copolymerized polypropene (PP-R) pipe containing plasticizer to be difficult to reach in hydrostatic test 95 DEG C, 1000h, the requirement of 3.5Mpa crack-free, ne-leakage, more not reach under hydrostatic state in heat stabilization test 110 DEG C, the requirement of 8760h, 1.9Mpa crack-free, ne-leakage.Therefore, one has low temperature resistant, high temperature resistant, withstand voltage properties, long service life, can the tubing of hot-melt adhesive paste be the main development direction of atactic copolymerized polypropene (PP-R) pipe from now on.
Model utility content
The technical problems to be solved in the utility model is to overcome in prior art because causing thermostability under tubing hydrostatic strength and hydrostatic state to reduce when improving atactic copolymerized polypropene (PP-R) pipe low temperature brittleness, the defect that working life shortens, provides a kind of low temperature resistant atactic copolymerized polypropene (PP-R) to manage.Low temperature resistant atactic copolymerized polypropene (PP-R) pipe of the present utility model has low temperature resistant, high temperature resistant, withstand voltage properties, the features such as long service life simultaneously.
The utility model solves above-mentioned technical problem by following technical proposals:
A kind of atactic copolymerized polypropene (PP-R) pipe, comprise interior body layer and outer functional layer, its feature is, the material of described interior body layer is atactic copolymerized polypropene (PP-R) tube material, the material of described outer functional layer is modified polypropene (PP) tube material, is also provided with a co-extrusion layer be composited by described atactic copolymerized polypropene (PP-R) tube material and described modified polypropene (PP) tube material between described outer functional layer and described interior body layer.
Preferably, the wall thickness of described outer functional layer is 1.0 ~ 1.3mm.
Preferably, the wall thickness of described interior body layer is 2.3 ~ 32.1mm.
Preferably, the wall thickness of described outer functional layer is 1.0mm; The wall thickness of described interior body layer is 4.2mm.
Preferably, the wall thickness stating outer functional layer is 1.1mm; The thick of described interior body layer wall is 6.7mm.
Preferably, the wall thickness of described outer functional layer is 1.2mm; The wall thickness of described interior body layer is 10.5mm.
Preferably, the wall thickness of described outer functional layer is 1.3mm; The wall thickness of described interior body layer is 18.3mm.Positive progressive effect of the present utility model is:
Cladding material of the present utility model adopts modified polypropene (PP) tube material, has good low-temperature impact-resistant performance, prevents the low temperature brittleness of tubing, can carry out installation at subzero 10 DEG C.Modified polypropene of the present utility model (PP) tube material is similar to atactic copolymerized polypropene (PP-R) the tube material processibility of internal layer, this tubing is produced by two layers of co-extrusion, there is good amalgamation with atactic copolymerized polypropene (PP-R) tube material of internal layer simultaneously, the contact segment of layer materials combines together, and then layer materials also defines one, improve thermostability under the hydrostatic strength of atactic copolymerized polypropene (PP-R) pipe and hydrostatic state.
In addition, the process connected due to tubing and pipe fitting melting welding is the process of phase interdiffusion between chain macromolecule, diffusion more fully, more even, switching performance is better.Because atactic copolymerized polypropene (PP-R) tube material and shock-resistant Co-polypropylene (PP-B) tube material structure of molecule there are differences, cause diffusion difficulty to increase, thus make the corresponding increase of the incomplete risk of welding.Tubing and pipe fitting melting welding connect, and be pipe outer surface and the welding of inner surface of pipe fitting, the cladding material that tubing is about 1.5mm wall thickness forms warp face when hot-melting machine weld mold heat fused.So set of the present utility model in the outer wall thickness of atactic copolymerized polypropene (PP-R) pipe be 1.0 ~ 1.3mm, when welding, atactic copolymerized polypropene (PP-R) tube material of Inner tubing layers and pipe fitting (material is atactic copolymerized polypropene (PP-R) tube material) can abundant hot melts, guarantee both welding qualities.
Accompanying drawing explanation
Fig. 1 is the structural representation of atactic copolymerized polypropene (PP-R) pipe of embodiment 1-4 of the present utility model.
1: outer functional layer
2: interior body layer
Embodiment
Do to know to the utility model by reference to the accompanying drawings below by way of embodiment of the present utility model and intactly illustrate.
Embodiment 1
Atactic copolymerized polypropene (PP-R) pipe (dn25, S2.5), as shown in Figure 1, is made up of outer functional layer 1, interior body layer 2, and outer functional layer 1 and interior body layer 2 are by co-extrusion compound molding.The material of outer functional layer 1 is modified polypropene (PP) tube material, and the material of interior body layer 2 is atactic copolymerized polypropene (PP-R) tube material.In compound molding process, the contact segment of modified polypropene (PP) tube material and atactic copolymerized polypropene (PP-R) tube material combines together, and forms the co-extrusion layer of a thinner thickness.As shown in Figure 1, outer functional layer 1 is placed at outside interior body layer 2.Co-extrusion layer (because the thickness of co-extrusion layer is compared very thin with outer functional layer with the thickness of interior body layer, therefore does not show) between functional layer 1 and interior body layer 2 outside in FIG.
In the present embodiment, the wall thickness of outer functional layer 1 is 1.0mm; The wall thickness of interior body layer 2 is 4.2mm.
Embodiment 2
Atactic copolymerized polypropene (PP-R) pipe (dn25, S2.5), as shown in Figure 1, is made up of outer functional layer 1, interior body layer 2, and outer functional layer 1 and interior body layer 2 are by co-extrusion compound molding.The material of outer functional layer 1 is modified polypropene (PP) tube material, and the material of interior body layer 2 is atactic copolymerized polypropene (PP-R) tube material.In compound molding process, the contact segment of modified polypropene (PP) tube material and atactic copolymerized polypropene (PP-R) tube material combines together, and forms the co-extrusion layer of a thinner thickness.As shown in Figure 1, outer functional layer 1 is placed at outside interior body layer 2.Co-extrusion layer (because the thickness of co-extrusion layer is compared very thin with outer functional layer with the thickness of interior body layer, therefore does not show) between functional layer 1 and interior body layer 2 outside in FIG.
In the present embodiment, the wall thickness of outer functional layer 1 is 1.1mm; Interior body layer 2 adopts atactic copolymerized polypropene (PP-R) tube material, and wall thickness is 6.7mm.
Embodiment 3
Atactic copolymerized polypropene (PP-R) pipe (dn25, S2.5), as shown in Figure 1, is made up of outer functional layer 1, interior body layer 2, and outer functional layer 1 and interior body layer 2 are by co-extrusion compound molding.The material of outer functional layer 1 is modified polypropene (PP) tube material, and the material of interior body layer 2 is atactic copolymerized polypropene (PP-R) tube material.In compound molding process, the contact segment of modified polypropene (PP) tube material and atactic copolymerized polypropene (PP-R) tube material combines together, and forms the co-extrusion layer of a thinner thickness.As shown in Figure 1, outer functional layer 1 is placed at outside interior body layer 2.Co-extrusion layer (because the thickness of co-extrusion layer is compared very thin with outer functional layer with the thickness of interior body layer, therefore does not show) between functional layer 1 and interior body layer 2 outside in FIG.
In the present embodiment, the wall thickness of outer functional layer 1 is 1.2mm; The wall thickness of interior body layer is 10.5mm.
Embodiment 4
Atactic copolymerized polypropene (PP-R) pipe (dn25, S2.5), as shown in Figure 1, is made up of outer functional layer 1, interior body layer 2, and outer functional layer 1 and interior body layer 2 are by co-extrusion compound molding.The material of outer functional layer 1 is modified polypropene (PP) tube material, and the material of interior body layer 2 is atactic copolymerized polypropene (PP-R) tube material.In compound molding process, the contact segment of modified polypropene (PP) tube material and atactic copolymerized polypropene (PP-R) tube material combines together, and forms the co-extrusion layer of a thinner thickness.As shown in Figure 1, outer functional layer 1 is placed at outside interior body layer 2.Co-extrusion layer (because the thickness of co-extrusion layer is compared very thin with outer functional layer with the thickness of interior body layer, therefore does not show) between functional layer 1 and interior body layer 2 outside in FIG.
In the present embodiment, the wall thickness of outer functional layer 1 is 1.3mm; The wall thickness of interior body layer 2 is 18.3mm.
In other embodiments of the present utility model, the range of choice of the wall thickness of described outer functional layer is 1.0 ~ 1.3mm, and the range of choice of the wall thickness of described interior body layer is 2.3 ~ 32.1mm.
In the above-described embodiments, described modified polypropene (PP) tube material, by atactic copolymerized polypropene (PP-R) tube material and shock-resistant Co-polypropylene (PP-B) tube material by weight percentage 30%:70% form; Wherein, described atactic copolymerized polypropene (PP-R) tube material is the R200P of Hyosung Corporation of Korea S, and described shock-resistant Co-polypropylene (PP-B) tube material is the M910 of LG Corp of South Korea.The material of described interior body layer is R200P atactic copolymerized polypropene (PP-R) tube material of Hyosung Corporation of Korea S.
The low temperature impact properties of testing example 1 ~ 4, tests and carries out according to standard GB/T/T18743.Test result: the charpy impact test of embodiment 1 ~ 4, is 0 at subzero 5 DEG C of damage percentages.
By the hydrostatic strength of embodiment 1 ~ 4, test and carry out according to standard GB/T/T6111.Test result: the hydrostatic strength of embodiment 1 ~ 4: 95 DEG C, the equal ne-leakage of 1000h, 3.5Mpa, crack-free.
By thermal stability under the hydrostatic state of embodiment 1 ~ 4, test and carry out according to standard GB/T/T6111.Test result: heat stabilization test under the hydrostatic state of embodiment 1 ~ 4: 110 DEG C, the equal ne-leakage of 8760h, 1.9Mpa, crack-free.
As can be seen here, atactic copolymerized polypropene (PP-R) pipe that the utility model proposes has good low-temperature impact-resistant performance, prevents the low temperature brittleness of tubing, can carry out installation at subzero 10 DEG C.There is good amalgamation with atactic copolymerized polypropene (PP-R) tube material of internal layer simultaneously, the contact segment of layer materials combines together, and then layer materials also defines one, improve thermostability under the hydrostatic strength of atactic copolymerized polypropene (PP-R) pipe and hydrostatic state.
Although the foregoing describe embodiment of the present utility model, it will be understood by those of skill in the art that this only illustrates, protection domain of the present utility model is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present utility model and essence, can make various changes or modifications to these mode of executions, but these change and amendment all falls into protection domain of the present utility model.
Claims (7)
1. a polypropylene random copolymer pipe, comprise interior body layer and outer functional layer, it is characterized in that, the material of described interior body layer is random copolymerization polypropylene pipe material, the material of described outer functional layer is modified polypropylene pipes material, is also provided with a co-extrusion layer be composited by described random copolymerization polypropylene pipe material and described modified polypropylene pipes material between described outer functional layer and described interior body layer.
2. polypropylene random copolymer pipe as claimed in claim 1, it is characterized in that, the wall thickness of described outer functional layer is 1.0 ~ 1.3mm.
3. polypropylene random copolymer pipe as claimed in claim 2, it is characterized in that, the wall thickness of described interior body layer is 2.3 ~ 32.1mm.
4. polypropylene random copolymer pipe as claimed in claim 3, it is characterized in that, described outer functional layer wall thickness is 1.0mm; Described interior body layer wall thickness is 4.2mm.
5. polypropylene random copolymer pipe as claimed in claim 3, it is characterized in that, described outer functional layer wall thickness is 1.1mm; Described interior body layer wall thickness is 6.7mm.
6. polypropylene random copolymer pipe as claimed in claim 3, it is characterized in that, described outer functional layer wall thickness is 1.2mm; Described interior body layer wall thickness is 10.5mm.
7. polypropylene random copolymer pipe as claimed in claim 3, it is characterized in that, described outer functional layer wall thickness is 1.3mm; Described interior body layer wall thickness is 18.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520270058.8U CN204647581U (en) | 2015-04-28 | 2015-04-28 | Polypropylene random copolymer pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520270058.8U CN204647581U (en) | 2015-04-28 | 2015-04-28 | Polypropylene random copolymer pipe |
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| Publication Number | Publication Date |
|---|---|
| CN204647581U true CN204647581U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520270058.8U Expired - Fee Related CN204647581U (en) | 2015-04-28 | 2015-04-28 | Polypropylene random copolymer pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352163A (en) * | 2016-08-29 | 2017-01-25 | 飞雕电器集团有限公司 | Low temperature impact resistant composite polypropylene random |
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2015
- 2015-04-28 CN CN201520270058.8U patent/CN204647581U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352163A (en) * | 2016-08-29 | 2017-01-25 | 飞雕电器集团有限公司 | Low temperature impact resistant composite polypropylene random |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20200428 |