CN1903925A - Crosslinking polyethylene insulating plastic for electric power cable - Google Patents
Crosslinking polyethylene insulating plastic for electric power cable Download PDFInfo
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- CN1903925A CN1903925A CN 200610029779 CN200610029779A CN1903925A CN 1903925 A CN1903925 A CN 1903925A CN 200610029779 CN200610029779 CN 200610029779 CN 200610029779 A CN200610029779 A CN 200610029779A CN 1903925 A CN1903925 A CN 1903925A
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- power cable
- electric power
- insulating plastic
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- polyethylene insulating
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Abstract
The present invention relates to a crosslinking polyethylene insulating plastics for power cable. Its raw material composition includes (by weight portion) 100 portions of polyethylene, 0.01-10 portions of cross-linking agent, 0.01-5 portions of antioxidant and 0-20 portions of filling agent. The density of the described polyethylene is 0.910-0.928 g/cu.cm, and its melt index is 0.10-10/10 min (2160kg). Said invention also provides its preparation process and its concrete steps.
Description
Technical field
The present invention relates to a kind of insulating polyethylene plastics, relate in particular to a kind of crosslinking polyethylene insulating plastic for electric power cable.
Background technology
Crosslinked polyethylene plastic have good heat resistance, carrying capacity by force, do not melt, corrosion-resistant, mechanical property is high, electrical property is excellent, do not contain carcinogenic advantages such as Pb stabilizer.In increasing electric wire, be used to substitute traditional PVC plastics that get.The polyethylene crosslinking The Application of Technology makes the maximum operation (service) temperature of electric wire and mechanical property be greatly improved, but, the polyethylene of considering overpopulation has higher crystallinity, the high pressure occasion that is used for 110KV behind such polyethylene crosslinking is easy to generate the electricity tree, more low-density polyethylene does not possess suitable processing fluidity, how to select proper raw material and proportioning, with obtained performance good be suitable for 110KV and following crosslinking polyethylene insulating plastic for electric power cable, be the problem of solution that the parties concerned press for.
Summary of the invention
The technical issues that need to address of the present invention are to disclose a kind of crosslinking polyethylene insulating plastic for electric power cable, to satisfy the needs of the parties concerned.
Crosslinking polyethylene insulating plastic for electric power cable of the present invention is to adopt following raw materials in weight portion preparation:
100 parts of polyethylene
Peroxide cross-linking agent 0.01-10 part
Oxidation inhibitor 0.01-5 part
Weighting agent 0-20 part
The parts by weight of preferred weighting agent are 0～8 part;
Said poly density is 0.910～0.928g/cm
3, melting index is 0.01-10/10min (2160 kilograms);
Said peroxide cross-linking agent is 2,5-dimethyl-2,5 pairs of (tert-butyl peroxy base) hexanes, 2,5-dimethyl-2,5 pairs of (tert-butyl peroxy base) hexins-3, ditertiary butyl peroxide, tert-butyl peroxide, to the manganese alkyl peroxide, α, a kind of or its mixture in two (tert-butyl peroxy base) diisopropylbenzene(DIPB)s of α or the dicumyl peroxide, its effect is that the free radical of superoxide under heat and ultrared exciting is opened, H-H reaction on free radical and the charcoal chain, form new free radical, two charcoal chain combinations form cross-linked structure, improve poly mechanical property, resistance toheat;
Said oxidation inhibitor is that four [3-(3,5,-di-t-butyl-4,-hydroxy phenyl) propionic acid] pentaerythritol ester, 4,4,-thiobis-(the 6-tertiary butyl-3-methylphenol), 4,4,-thiobis (6-tertiary butyl meta-cresol), N, N ,-hexamethylene two (3,5-di-t-butyl-4-hydroxyl propionic acid amide), thio-2 acid two laurel tallows, thio-2 acid distearyl alcohol ester, the Hostanox SE10 of the Clariant CO. of Clariant company, Hostanox OSP1, Hostanox O3, CiBa 1035, CiBa 1076, CiBa PS800, the mixture of one or more among the CiBa PS802, its effect are to suppress goods to wear out, and improve the heat resistance of goods.
Said weighting agent is to choose any one kind of them or several mixtures in lime carbonate, potter's clay, talcum powder, white carbon black, the wollastonite, and its effect is to improve processing of plastic performance and physical and mechanical property, reduces cost.
The preparation method of crosslinking polyethylene insulating plastic for electric power cable of the present invention comprises the steps: the polyethylene tree is mixed with peroxide cross-linking agent, oxidation inhibitor and weighting agent, enter forcing machine, at 80 ℃ of-140 ℃ of extruding pelletizations, promptly obtain crosslinking polyethylene insulating plastic for electric power cable of the present invention.
According to the present invention, preferably the polyvinyl resin pre-treatment is dried to below the moisture 500ppm;
The later finished product of granulation is dried to moisture content less than below the 200ppm, is stored in to purify in the packing bag.
Adopt the crosslinking polyethylene insulating plastic for electric power cable of above-mentioned proportioning raw materials preparation, not only production cost is lower, and can satisfy the requirement of GB/T11017 2002 for Insulation Material, be particularly suitable for 110KV and following crosslinking polyethylene insulating plastic for electric power cable.
Embodiment
Embodiment 1
Plastic formula: (weight part)
100 parts of polyethylene;
2,1 part of 5-dimethyl-2,5 pair (tert-butyl peroxy base) hexin;
2 parts of thio-2 acid two laurel tallows;
20 parts in potter's clay.
The polyvinyl resin pre-treatment is dried to below the moisture 500ppm, then with 2,5-dimethyl-2,5 pairs of (tert-butyl peroxy base) hexins, thio-2 acid two laurel tallows, potter's clay thorough mixing, enter forcing machine at 100 ℃ of extruding pelletizations, the later finished product of granulation is dried to moisture content less than below the 200ppm, is stored in to purify in the packing bag.
Behind extruding pelletization, the test data after sample preparation is crosslinked:
| Sequence number | Test event | Method standard | Unit | Measured value |
| 1 | Tensile strength | GB/T 1040 | ≥Mpa | 24.2 |
| 2 | Elongation at break | GB/T 1040 | ≥％ | 516 |
| 3 | Heat is extended under the load elongation cooling back permanentset rate | GB/T 2951.5 | ％ ％ | 72 0 |
| 4 | Thermal ageing tensile strength velocity of variation elongation at break velocity of variation | GB/T 2951.2 | ％ ％ | -6 -7 |
| 5 | 20 volume specific resistances ℃ | GB/T 1410 | ≥Ω.m | 1.2*10 1 4 |
| 6 | Dielectric strength | GB/T 1408.1 | MV/m | 39 |
| 7 | Specific inductivity | GB/T 1409 | ≤ | 2.25 |
| 8 | Dielectric dissipation factor | GB/T 1409 | ≤ | 4*10 -4 |
| 9 | Moisture | GB/T 6283 | ppm | 60 |
| 10 | Density | GB/T 1033 | g/mm 3 | 0.920 |
| 11 | Degree of crosslinking | ％ | 87 | |
| 12 | Foreign matter content＞100micron | /kg | 0 |
Above data satisfy the requirement of GB/T11017 2002 for Insulation Material.
Embodiment 2
100 parts of polyethylene;
2,1.2 parts of 5-dimethyl-2,5 pair (tert-butyl peroxy base) hexanes;
2 parts of thio-2 acid distearyl alcohol esters;
8 parts of talcum powder.
Weighting agent is selected superfine talcum powder (below the 50nm, through coupling agent treatment), the polyvinyl resin pre-treatment is dried to below the moisture 500ppm, then with 2,5-dimethyl-2,5 pairs of (tert-butyl peroxy base) hexanes, thio-2 acid distearyl alcohol ester, talcum powder thorough mixing, enter forcing machine at 140 ℃ of extruding pelletizations, the later finished product of granulation is dried to moisture content less than below the 200ppm, is stored in to purify in the packing bag.
Behind extruding pelletization, the test data after sample preparation is crosslinked:
| Sequence number | Test event | Method standard | Unit | Measured value |
| 1 | Tensile strength | GB/T 1040 | ≥Mpa | 22.1 |
| 2 | Elongation at break | GB/T 1040 | ≥％ | 512 |
| 3 | Heat is extended under the load elongation cooling back permanentset rate | GB/T 2951.5 | ％ ％ | 76 0 |
| 4 | Thermal ageing tensile strength velocity of variation elongation at break velocity of variation | GB/T 2951.2 | ％ ％ | -10 -16 |
| 5 | 20 volume specific resistances ℃ | GB/T 1410 | ≥Ω.m | 1.0*10 14 |
| 6 | Dielectric strength | GB/T 1408.1 | MV/m | 37 |
| 7 | Specific inductivity | GB/T 1409 | ≤ | 2.28 |
| 8 | Dielectric dissipation factor | GB/T 1409 | ≤ | 5*10 -4 |
| 9 | Moisture | GB/T 6283 | ppm | 102 |
| 10 | Density | GB/T 1033 | g/mm 3 | 0.922 |
| 11 | Degree of crosslinking | ％ | 89 | |
| 12 | Foreign matter content＞100micron | /kg | 0 |
Above data satisfy the requirement of GB/T11017 2002 for Insulation Material.
Embodiment 3
100 parts of polyethylene;
2,1.2 parts of 5-dimethyl-2,5 pair (tert-butyl peroxy base) hexanes;
2 parts of thio-2 acid distearyl alcohol esters;
Weighting agent is selected superfine talcum powder (below the 50nm, through coupling agent treatment), the polyvinyl resin pre-treatment is dried to below the moisture 500ppm, then with 2,5-dimethyl-2,5 pairs of (tert-butyl peroxy base) hexanes, thio-2 acid distearyl alcohol ester, talcum powder thorough mixing, enter forcing machine at 140 ℃ of extruding pelletizations, the later finished product of granulation is dried to moisture content less than below the 200ppm, is stored in to purify in the packing bag.
Behind extruding pelletization, the test data after sample preparation is crosslinked:
| Sequence number | Test event | Method standard | Unit | Measured value |
| 1 | Tensile strength | GB/T 1040 | ≥Mpa | 22.1 |
| 2 | Elongation at break | GB/T 1040 | ≥％ | 512 |
| 3 | Heat is extended under the load elongation cooling back permanentset rate | GB/T 2951.5 | ％ ％ | 76 0 |
| 4 | Thermal ageing tensile strength velocity of variation elongation at break velocity of variation | GB/T 2951.2 | ％ ％ | -10 -16 |
| 5 | 20 volume specific resistances ℃ | GB/T 1410 | ≥Ω.m | 1.25*10 14 |
| 6 | Dielectric strength | GB/T 1408.1 | MV/m | 37 |
| 7 | Specific inductivity | GB/T 1409 | ≤ | 2.20 |
| 8 | Dielectric dissipation factor | GB/T 1409 | ≤ | 5*10 -4 |
| 9 | Moisture | GB/T 6283 | ppm | 102 |
| 10 | Density | GB/T 1033 | g/mm 3 | 0.922 |
| 11 | Degree of crosslinking | ％ | 89 | |
| 12 | Foreign matter content＞100micron | /kg | 0 |
Above data satisfy the requirement of GB/T11017 2002 for Insulation Material.
Claims (8)
1, a kind of crosslinking polyethylene insulating plastic for electric power cable is characterized in that: comprise following parts by weight proportion raw material preparation:
100 parts of polyethylene;
Peroxide cross-linking agent 0.01-10 part;
Oxidation inhibitor 0.01-5 part;
Weighting agent 0-20 part;
Said density of pe is 0.910-0.928g/cm3, and melting index is 0.10～10/10min (2160 kilograms).
2, crosslinking polyethylene insulating plastic for electric power cable according to claim 1, it is characterized in that: peroxide cross-linking agent is 2,5-dimethyl-2,5 pairs of (tert-butyl peroxy base) hexanes, 2,5-dimethyl-2,5 pairs of (tert-butyl peroxy base) hexins-3, ditertiary butyl peroxide, tert-butyl peroxide, to manganese alkyl peroxide, α, a kind of or its mixture in two (tert-butyl peroxy base) diisopropylbenzene(DIPB)s of α or the dicumyl peroxide.
3, crosslinking polyethylene insulating plastic for electric power cable according to claim 1, it is characterized in that: described oxidation inhibitor is: four [3-(3,5,-di-t-butyl-4,-hydroxy phenyl) propionic acid] pentaerythritol ester, 4,4 ,-thiobis-(the 6-tertiary butyl-3-methylphenol), 4,4,-thiobis (6-tertiary butyl meta-cresol), N, N ,-hexamethylene two (3,5-di-t-butyl-4-hydroxyl propionic acid amide), thio-2 acid two laurel tallows, thio-2 acid distearyl alcohol ester, Hostanox SE10, Hostanox OSP1, HostanoxO3, CiBa 1035, CiBa 1076, choosing any one kind of them or several mixtures among CiBa PS800 or the CiBa PS802.
4, crosslinking polyethylene insulating plastic for electric power cable according to claim 1 is characterized in that: weighting agent: CaCO
3, choose any one kind of them or several mixtures in potter's clay class, talcum powder, white carbon black or the wollastonite.
5. crosslinking polyethylene insulating plastic for electric power cable according to claim 1 is characterized in that: be that a kind of voltage that is used for is smaller or equal to 110KV power cable insulating plastics.
6, according to the preparation method of each described crosslinking polyethylene insulating plastic for electric power cable of claim 1～5, it is characterized in that: comprise the steps: the polyethylene tree is mixed with peroxide cross-linking agent, oxidation inhibitor and weighting agent, enter forcing machine, at 80 ℃ of-140 ℃ of extruding pelletizations, promptly obtain said crosslinking polyethylene insulating plastic for electric power cable.
7. method according to claim 6 is characterized in that the polyvinyl resin pre-treatment is dried to below the moisture 500ppm.
8, method according to claim 6 is characterized in that: the later finished product of granulation is dried to moisture content less than below the 200ppm.
Priority Applications (1)
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|---|---|---|---|
| CN 200610029779 CN1903925A (en) | 2006-08-07 | 2006-08-07 | Crosslinking polyethylene insulating plastic for electric power cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610029779 CN1903925A (en) | 2006-08-07 | 2006-08-07 | Crosslinking polyethylene insulating plastic for electric power cable |
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| CN1903925A true CN1903925A (en) | 2007-01-31 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161704B (en) * | 2007-09-29 | 2010-04-14 | 中国蓝星（集团）股份有限公司 | Method for improving metallocene polyethylene cross-linking efficiency and optimizing net structure of conjugate |
| CN103642108A (en) * | 2013-11-04 | 2014-03-19 | 上海新上化高分子材料有限公司 | Soft transparent silane cross-linked polyethylene insulated material and preparation method thereof |
| CN103694540A (en) * | 2013-12-16 | 2014-04-02 | 上海新上化高分子材料有限公司 | Soft high-mechanical-strength medium-voltage insulating material for ocean engineering cable and preparation method thereof |
| CN107973955A (en) * | 2016-10-25 | 2018-05-01 | 合肥杰事杰新材料股份有限公司 | A kind of high tenacity, inexpensive polyethylene filler parent granule and preparation method thereof |
| CN108148235A (en) * | 2016-12-05 | 2018-06-12 | 合肥杰事杰新材料股份有限公司 | A kind of polyethylene filler parent granule and preparation method thereof |
| CN112341689A (en) * | 2020-11-10 | 2021-02-09 | 远程电缆股份有限公司 | Thermal-aging-resistant polyethylene composite material |
-
2006
- 2006-08-07 CN CN 200610029779 patent/CN1903925A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161704B (en) * | 2007-09-29 | 2010-04-14 | 中国蓝星（集团）股份有限公司 | Method for improving metallocene polyethylene cross-linking efficiency and optimizing net structure of conjugate |
| CN103642108A (en) * | 2013-11-04 | 2014-03-19 | 上海新上化高分子材料有限公司 | Soft transparent silane cross-linked polyethylene insulated material and preparation method thereof |
| CN103694540A (en) * | 2013-12-16 | 2014-04-02 | 上海新上化高分子材料有限公司 | Soft high-mechanical-strength medium-voltage insulating material for ocean engineering cable and preparation method thereof |
| CN107973955A (en) * | 2016-10-25 | 2018-05-01 | 合肥杰事杰新材料股份有限公司 | A kind of high tenacity, inexpensive polyethylene filler parent granule and preparation method thereof |
| CN108148235A (en) * | 2016-12-05 | 2018-06-12 | 合肥杰事杰新材料股份有限公司 | A kind of polyethylene filler parent granule and preparation method thereof |
| CN112341689A (en) * | 2020-11-10 | 2021-02-09 | 远程电缆股份有限公司 | Thermal-aging-resistant polyethylene composite material |
| CN112341689B (en) * | 2020-11-10 | 2023-04-07 | 远程电缆股份有限公司 | Thermal-aging-resistant polyethylene composite material |
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Application publication date: 20070131 |