CN1308388C - Non-excavated dedicated tubular goods in use for electric power - Google Patents
Non-excavated dedicated tubular goods in use for electric power Download PDFInfo
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- CN1308388C CN1308388C CNB2004100165937A CN200410016593A CN1308388C CN 1308388 C CN1308388 C CN 1308388C CN B2004100165937 A CNB2004100165937 A CN B2004100165937A CN 200410016593 A CN200410016593 A CN 200410016593A CN 1308388 C CN1308388 C CN 1308388C
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Abstract
The present invention relates to a polymer compound which comprises 82 to 89 weight portions of polypropylene, 7 to 15 weight portions of polyethylene, 2 to 5 weight portions of montmorillonite, 0 to 1.1 weight portions of antioxidant, 0 to 1.2 weight portions of ultraviolet light stabilizing agent, and 0 to 0.8 weight portions of processing aid in 100 weight portions. The present invention also relates to a pipe made of the polymer compound, and the pipe can be used for array distribution pipelines (such as cable wires, telephone wires, cable television optical cables, etc.) by a non-excavation method.
Description
Technical field
The pipeline that the present invention relates to a kind of polymer composition and make by this polymer composition.
Background technology
Along with the progress of science and technology and the development in city, various pipelines (as telephone wire, cable, wire television optical cable, broadband network optical cable etc.) play an increasingly important role.But in railway carriage or compartment, many old cities, described pipeline mostly is pole line, and such wiring method has polluted vision, and security is not high, is subject to ectocine.Therefore, many cities have proposed the target that pipeline lands.
Previous pipeline lands the excavation method that adopts.Be first excavated pavement, pipe laying wears pipeline (as electric hot line, wire television optical cable, broadband network optical cable etc.) again in pipeline then.This method is less demanding to pipeline, only needs pipeline to have certain crushing resistance and resistance to deterioration gets final product.But the construction cost height of this excavation method, take the road and and easily cause traffic jam.
For addressing the above problem, a kind of trenchless technology that excavated pavement gets final product pipe laying that need not has been proposed at present.This technology is included in two ends, the road surface excavation of desiring pipe laying, at underground it is got through, with specific equipment pipeline (one or more) is dragged toward the other end, worn pipeline at last in pipeline by an end.This method cost is low, short construction period, need not to take road surface etc.But it has higher requirement to pipeline and material thereof.Promptly in order to satisfy construction requirement, described pipeline must have certain flexible and intensity and need have low frictional coefficient.
In addition, the polymer pipeline that had before used in the excavation method is all non-is exclusively used in cable laying and establishes.Because cable more or less can generate heat under big electric current, making pipeline wear out and influence its crushing resistance after the heating again easily is its life-span.Therefore, if the polymer pipeline that uses in the trenchless technology desires to be used for cable laying, this pipeline also need have heat-resisting to aging resistance.
The purpose of this invention is to provide a kind of polymer composition, the pipeline that makes with this composition can satisfy the requirement of described trenchless technology.
Another object of the present invention provides a kind of pipeline that is used for trenchless technology.
The content of invention
The invention provides a kind of polymer composition, in 100 weight parts, it comprises:
I) 82-89 weight part polypropylene;
Ii) 7-15 weight account polyethylene;
Iii) 2-5 weight part polynite.
In polymer composition of the present invention, also can comprise non-essential:
Iv) 0-1.1 weight part antioxidant;
V) 0-1.2 weight part UV light stabilizing agent;
Vi) 0-0.8 weight part processing aid.
The present invention also provides the pipeline that is processed by described polymer composition.
Embodiment
One aspect of the present invention provides a kind of polymer composition, and in 100 weight parts, it comprises:
I) 82-89 weight part polypropylene;
Ii) 7-15 weight account polyethylene;
Iii) 2-5 weight part polynite.
In 100 weight parts, contain the 82-89 weight part in the present composition, better 84-86 weight part polypropylene.Described polypropylene can be an alfon, also can be propylene and a small amount of other monomeric multipolymer.In a better example of the present invention, described other monomeric amount is less than 5 weight %, better less than 3%.
Described other monomeric example has ethene, vinylbenzene, vinyl toluene, vinyl-acetic ester, acrylate, methacrylic ester etc.
The polymerization degree of the alfon that uses in the present composition is 6,900-7, and 100, be preferably 7,000; Number-average molecular weight is 60,000-70, and 000, weight-average molecular weight is 280,000-300,000.
In 100 weight parts, the present composition contains the 7-15 weight part, better the 9-12 weight account polyethylene.Described polyethylene can be an Alathon, also can be ethene and a small amount of other monomeric multipolymer.In a better example of the present invention, described other monomeric amount is less than 5 weight %, better less than 3%.
Described other monomeric example has propylene, vinylbenzene, vinyl toluene, vinyl-acetic ester, acrylate, methacrylic ester etc.
The polymerization degree that is applicable to the Alathon of the present composition is 7,900-8, and 100, be preferably 8,000, number-average molecular weight is 50,000-60,000, weight-average molecular weight is 220,000-230,000.
In 100 weight parts, the present composition also contains the 2-5 weight part, better 3-4 weight part polynite.It can be this area polynite as additive commonly used.Be preferably, described polynite is a nano imvite, and its particle diameter is 10-50nm, is preferably 20-30nm.Use nano imvite to help to reduce the frictional property of its pipeline that makes.
When using nano imvite, the dispersing method of nanoparticle can be the dispersing method of this area nanoparticle commonly used.The method that is suitable for can be referring to for example Chinese patent ZL 95109710.5.
In polymer composition of the present invention, also can randomly comprise: 0-1.1 weight part antioxidant, 0-1.2 weight part UV light stabilizing agent, 0-0.8 weight part processing aid.
Be applicable to that antioxidant of the present invention can be any antioxidant known in the art.In a better example of the present invention, described antioxidant is 2,4, the 6-tri-butyl-phenol.
The UV light stabilizing agent that is applicable to the present composition can be this area UV light stabilizing agent commonly used.In a better example of the present invention, described UV light stabilizing agent is UV-284, i.e. 2-hydroxyl-4-methoxyl group-5-diphenylsulfone ketone.
Also can add processing aid in the present composition.Described processing aid can be this area processing aid commonly used.The indefiniteness example of suitable processing aid has dispersion agent (as polyethylene oxide ether) etc.
The present composition also can add additive, as softening agent, coupler etc.The performance of the pipeline that makes with improvement.The add-on of described additive is without particular limitation, can be the amount of being routinely added to of this area.In a better example of the present invention, in 100 weight part compositions, the amount of described additive is the 0-1 weight part.
The present invention also provides a kind of pipeline that makes with the present composition.This pipeline makes with ordinary method.In a better example of the present invention, described method comprises the following steps: by metering raw material to be added forcing machine, the material that typing is extruded through plasticizing, and cooling back fixed length cutting gets final product.
In a better example of the present invention, use following machined parameters:
Processing temperature: 170-195 ℃
Engine speed: 75-90rpm
Coolant water temperature: 18-23 ℃
Main frame moment of torsion: 70-73%
Melt pressure: 12-15MPa
Output: 550-620kg/h
In the methods of the invention, the water coolant of use better is a soft water, and coolant water temperature has the Gradient distribution that water temperature is successively decreased.In a better example of the present invention, described water temperature Gradient distribution is 28 ℃-23 ℃-18 ℃.
Compare with existing pipeline, the pipeline that polymer composition of the present invention makes has good performance.Its tensile strength is that 22-26MPa, flexural strength are that 31-35MPa, bending elastic modulus are that 930-1250MPa, density are 0.92-0.95g/cm
3, dimension card thermotolerance (1kg, 50 ℃/h) be 0.2-0.32 for 135-150 ℃, frictional coefficient.
Below, further specify the present invention in conjunction with the embodiments.
Embodiment
Amount shown in the according to the form below 1 adds single screw extrusion machine (screw diameter is 120mm, and length-to-diameter ratio is 33: 1) with the raw material of drying, the material that typing is extruded through plasticizing, cooling back fixed length cutting.
According to the testing method of national standard, the performance of the pipeline that makes is measured.What table 2 provided is that national standard requires satisfied Main physical mechanical property, and the result that the present invention records is as shown in table 3:
The Main physical mechanical property of table 2 tubing
| Project | Requirement | Test method |
| Density (g/cm 3) | 0.91-0.96 | GB1033-86 |
| The coefficient of sliding friction | ＜0.30 | GB/T3960-89 |
| Tensile strength (23 ± 2) ℃ (MPa) | ≥22.0 | GB/T1040-92 |
| Flexural strength (23 ± 2) ℃ (MPa) | ≥34.0 | GB/T9341-2000 |
| Bending elastic modulus (MPa) | 900-1200 | GB/T341-2000 |
| Dimension card heat-resisting (10N, 50 ℃/h) (℃) | ≥120 | GB/T1633-2000 |
Table 1
| Embodiment | Alfon | Alathon | Polynite | Oxidation inhibitor (consumption) | UV light stabilizing agent (consumption) | Processing aid (consumption) | |||||||
| Consumption | The polymerization degree | Number-average molecular weight * | Weight-average molecular weight * | Consumption | The polymerization degree | Number-average molecular weight * | Weight-average molecular weight * | Consumption | Particle diameter (nm) | ||||
| 1 | 89 | 100 | 25 | 28 | 7 | 101 | 20 | 22 | 4 | 500 | - | - | - |
| 2 | 82 | 110 | 30 | 29 | 15 | 90 | 23 | 23 | 2 | 50 | 0.2 | 0.3 | Dispersion agent (0.5) |
| 3 | 84 | 90 | 28 | 30 | 9 | 110 | 21 | 21 | 5 | 10 | 1.1 | 0.1 | Dispersion agent (0.8) |
| 4 | 86 | 98 | 25 | 29 | 8 | 100 | 20 | 21 | 3 | 30 | 1 | 1.2 | Dispersion agent (0.8) |
| 5 | 85 | 100 | 27 | 28 | 12 | 100 | 23 | 22 | 2 | 20 | 0.3 | 0.5 | Dispersion agent (0.2) |
Annotate: 1) consumption is weight part 2) oxidation inhibitor is 2,4, the 6-tri-butyl-phenol
3) UV light stabilizing agent is 2-hydroxyl-4-methoxyl group-5-diphenylsulfone ketone 4) dispersion agent is oxidized polyethlene wax
5) molecular weight is a unit with ten thousand all
Table 2
| Embodiment | 1 | 2 | 3 | 4 | 5 |
| Tensile strength (MPa) | 24.8 | 22.2 | 22.3 | 22.6 | 22.5 |
| Flexural strength (MPa) | 37.8 | 34.3 | 36.2 | 35.5 | 35.3 |
| Bending elastic modulus (MPa) | 1220 | 980 | 1032 | 1265 | 1050 |
| Density (g/cm 3) | 0.93 | 0.94 | 0.935 | 0.93 | 0.93 |
| Dimension card thermotolerance (50 ℃ of 1kg/hr) (℃) | 148 | 139 | 143 | 146 | 145 |
| The coefficient of sliding friction | 0.3 | 0.28 | 0.27 | 0.25 | 0.26 |
By The above results as seen, the pipeline that makes of polymer composition of the present invention can satisfy the requirement of non-excavation method construction.
Claims (10)
1. polymer composition, in 100 weight parts, it comprises:
I) 82-89 weight part polypropylene;
Ii) 7-15 weight account polyethylene;
Iii) 2-5 weight part nano imvite;
Wherein, described polypropylene is an alfon, and its polymerization degree is 6,900-7, and 100, number-average molecular weight is 60,000-70,000, weight-average molecular weight is 280,000-300,000; Described polyethylene is an Alathon, and its polymerization degree is 7,900-8, and 100, number-average molecular weight is 50,000-60,000, weight-average molecular weight is 220,000-230,000.
2. composition as claimed in claim 1 is characterized in that it also comprises:
Iv) 0-1.1 weight part antioxidant;
V) 0-1.2 weight part UV light stabilizing agent;
Vi) 0-0.8 weight part processing aid.
3. composition as claimed in claim 1 is characterized in that polyacrylic amount is that 84-86 weight part, poly amount are that the amount of 9-12 weight part, polynite is the 3-4 weight part.
4. composition as claimed in claim 1 is characterized in that the described polyacrylic polymerization degree is 7,000, and the described poly polymerization degree is 8,000.
5. as any one described composition among the claim 1-3, the particle diameter that it is characterized in that described nano imvite is 10-50nm.
6. composition as claimed in claim 2 is characterized in that described antioxidant is 2,4, the 6-tri-butyl-phenol; Described UV light stabilizing agent is 2-hydroxyl-4-methoxyl group-5-diphenylsulfone ketone; Described dispersion agent is an oxidized polyethlene wax.
7. as any one described composition among the claim 1-3, it is characterized in that it also contains 0-1 weight part additive, described additive is selected from softening agent and coupler.
8. goods that make with the described composition of claim 1.
9. goods as claimed in claim 8 is characterized in that described goods are tubing.
10. goods as claimed in claim 8 is characterized in that described goods are non-excavation special electric power tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100165937A CN1308388C (en) | 2004-02-27 | 2004-02-27 | Non-excavated dedicated tubular goods in use for electric power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100165937A CN1308388C (en) | 2004-02-27 | 2004-02-27 | Non-excavated dedicated tubular goods in use for electric power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1660930A CN1660930A (en) | 2005-08-31 |
| CN1308388C true CN1308388C (en) | 2007-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100165937A Expired - Fee Related CN1308388C (en) | 2004-02-27 | 2004-02-27 | Non-excavated dedicated tubular goods in use for electric power |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101114764B (en) * | 2006-07-27 | 2010-09-15 | 上海介通管业有限公司 | Modified polypropylene cable protection tube for non-digging direct-buried mode |
| CN103467840A (en) * | 2012-06-07 | 2013-12-25 | 合肥杰事杰新材料股份有限公司 | Modified polypropylene material and preparation method and uses thereof |
| CN104086887B (en) * | 2014-07-09 | 2016-08-17 | 安徽宁国市高新管业有限公司 | A kind of weatherability electric power tubing |
| CN112145822B (en) * | 2020-09-28 | 2022-07-01 | 烟台泰悦流体科技有限公司 | A hose for food is carried |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267682A (en) * | 2000-03-17 | 2000-09-27 | 中国石油天然气股份有限公司兰州石化分公司 | Composite nanometer-level polypropylene/montmorillonoid material and its preparation |
| CN1374340A (en) * | 2002-04-08 | 2002-10-16 | 刘建中 | Plastic alloy |
| KR100356534B1 (en) * | 2000-04-07 | 2002-10-18 | 금호석유화학 주식회사 | Process for preparing intercalated nanocomposites |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267682A (en) * | 2000-03-17 | 2000-09-27 | 中国石油天然气股份有限公司兰州石化分公司 | Composite nanometer-level polypropylene/montmorillonoid material and its preparation |
| KR100356534B1 (en) * | 2000-04-07 | 2002-10-18 | 금호석유화학 주식회사 | Process for preparing intercalated nanocomposites |
| CN1374340A (en) * | 2002-04-08 | 2002-10-16 | 刘建中 | Plastic alloy |
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| CN1660930A (en) | 2005-08-31 |
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Inventor after: Xu Jun Inventor after: Wang Cunqi Inventor before: Xu Jun Inventor before: He Longxin |
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Free format text: CORRECT: INVENTOR; FROM: XU JUN HE LONGXIN TO: XU JUN WANG CUNQI |
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Granted publication date: 20070404 Termination date: 20190227 |