CN100592435C - Water resistance tree medium voltage insulated cable material and cable - Google Patents
Water resistance tree medium voltage insulated cable material and cable Download PDFInfo
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- CN100592435C CN100592435C CN200810028374A CN200810028374A CN100592435C CN 100592435 C CN100592435 C CN 100592435C CN 200810028374 A CN200810028374 A CN 200810028374A CN 200810028374 A CN200810028374 A CN 200810028374A CN 100592435 C CN100592435 C CN 100592435C
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Abstract
The present invention provides a WTR medium voltage insulating cable material and a cable made of the material, and pertains to cable domain. A medium voltage WTR irradiated polyethylene insulating material is produced by adding a compound WTR growth promoting agent; the compound WTR growth promoting agent comprises hydrogenated polysaccaride, organized montmorillonite, maleic anhydride grafts, and silicone polymer between molecular weight 1000-5000; the parts by weight of the ingredients of the WTR medium voltage insulating cable material are: low density polyethylene: 100, maleic anhydride grafts: 2-10, hydrogenated polysaccaride: 0.2-1, organized montmorillonite: 0.01-1.5, silicone polymer: 0.01-1.5, cross-linking agent: 2-3, and antioxidant: 0.3-0.5. The insulating material in the present invention has WTR growth function, break through the bottle neck of WT growth of the cable insulation itself, and can prolong the service life of the cables. With the WTR medium voltage insulatingcable material, environment protective halogen-free flame retardant medium voltage WTR irradiated polyethylene insulated power cables or PVC medium voltage WTR irradiated polyethylene insulated powercables can be manufactured.
Description
Technical field
Press insulated cable material and cable to belong to field of cables in the anti-water tree of the present invention.
Background technology
China implements upgrading urban and rural power grids, development of the West Regions and communications facility large tracts of land upgrading, wilderness demand electric wire product at present.Be subjected to the influence of extraneous factors such as fire, the erosion of mouse ant the useful life of cable on the one hand, on the other hand, the growth of cable insulation self water tree is the major reason that influences cable.Conventional cross-linking polyethylene materials can't solve this technical bottleneck, prolongs cable useful life, is the important means that guarantees that electrical network runs well.
Summary of the invention
The objective of the invention is to overcome the weak point of pressure cross-linked polyethylene insulated cable material in the routine and pressure cross-linked polyethylene insulated cable material and production method thereof in a kind of anti-water tree be provided,
The objective of the invention is to prepare and press anti-water tree power cable with cross-linked polyethylene insulation in the environment-friendly halogen-free flame-proof, or press anti-water tree power cable with cross-linked polyethylene insulation in the polyvinyl chloride.
The present invention presses anti-water tree cross-linked polyethylene insulating material by adding composite anti-water tree growth stimulator in the preparation, composite anti-water tree growth stimulator comprises hydrogenation glycan, organic montmorillonite, maleic anhydride grafts and the silicone polymer of molecular weight between 1000-5000.The said hydrogenation glycan of the present invention is meant artificial synthetic hydrogenation polydextrose or hydrogenation resistant maltodextrin, has good water-solubility, moisture retention and polarity, can disperse to enter into the moisture content of insulating barrier inside preferably, can effectively avoid the moisture content aggegation; This anti-water tree growth stimulator molecular weight is bigger, and good compatibility is arranged in the polymeric substrate; Simultaneously as the macromolecule nucleator, perfect polyethylene crystalline structure has improved poly degree of crystallinity, and then has improved the polymer disruptive field intensity.
The parts by weight prescription of composite anti-water tree growth stimulator is formed:
Hydrogenation glycan 0.2-1 part
Organic montmorillonite 0.01-1.5 part
Maleic anhydride grafts 2-10 part
Silicone polymer 0.01-1.5 part
Maleic anhydride grafts and organic montmorillonite have been introduced polar group, have improved the hydrophily of polyethylene base material, and moisture further is condensed into water droplet in the prevention insulating material, and the introducing of polar group has simultaneously improved the disruptive field intensity of composite material; After imvite is handled through organising, during with the low density polyethylene (LDPE) melt blending, part polyethylene is inserted in the lamellar structure of imvite, its interface potential barrier has improved the scattering process to electronics, the lamella nanostructure that polyethylene and imvite simultaneously forms has reduced the amorphous area of polymeric substrate, thereby has improved the polymer disruptive field intensity.
Silicone polymer possesses certain repair function as a kind of solid silicone oil to the water tree.
Press the parts by weight prescription of insulated cable material to form in the anti-water tree of the present invention:
100 parts of low density polyethylene (LDPE)s
Maleic anhydride grafts 2-10 part
Hydrogenation glycan 0.2-1 part
Organic montmorillonite 0.01-1.5 part
Silicone polymer 0.01-1.5 part
Crosslinking agent 2--3 part
Antioxidant 0.3-0.5 part
Maleic anhydride grafts is a kind of or at least a mixture in grafted low density polyethylene thing, medium density polyethylene graft, the ethylene vinyl acetate copolymer graft material.Consumption 2-10 part, preferred 8 parts.
The hydrogenation glycan is a kind of or at least a mixture in hydrogenation polydextrose or the hydrogenation resistant maltodextrin material, consumption 0.2-1 part, preferred 0.7 part.
Organic montmorillonite consumption 0.01-1.5 part, preferred 0.1 part.
Silicone polymer is a kind of or at least a mixture in methyl polysiloxane, propyl group methyl polysiloxane, the phenyl methyl silicone materials.Consumption 0.01-1.5 part, preferred 0.1 part.
Crosslinking agent is a kind of or at least a mixture in cumyl peroxide (DCP), benzoyl peroxide (BPO), dual-tert-butyl peroxidating cumene (BIPB) material.Consumption 2-3 part.Preferred 2.4 parts.
Antioxidant be tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester (168), thio-2 acid two (octadecyl ester) (DSTP), 4, a kind of or at least a mixture in 4 '-thiobis (3 methy 6 tert butyl phenol) (300) material.Consumption 0.3-0.5 part.Preferred 0.4 part.
Low density polyethylene (LDPE) selects for use melt index at 2.0 ± 0.1 low density polyethylene (LDPE)
Organic montmorillonite adopts the method preparation of microwave radiation.The parts by weight prescription of organic montmorillonite is formed,
Imvite 20-40 part
Deionized water 600-1000 part
Aqueous solution 10-20 part of 20% concentration bromination dinonyl dimethylammonium
Add imvite 20-40 part, deionized water 600-1000 part, be warming up to the 70---80 degree, dropping contains the aqueous solution of bromination dinonyl dimethylammonium 10-20 part of 20% concentration, after dropwising, utilize the more than one hundred million inferior vibration characteristics of microwave per second, quicken the process of imvite and quaternary ammonium salt ion-exchange, every 30-60 minute, use Microwave Treatment 5-10 minute, stirred 5 hours, suction filtration, the deionized water wash precipitation, silver nitrate (0.1mol/L) detects less than bromide ion, and vacuumize is to constant weight, grind and sieve, promptly get organic montmorillonite through 200 orders.
Press cross-linked polyethylene insulating material to improve the water tree resistant property of cross-linked polyethylene insulating material in the anti-water tree of the present invention's preparation, prolonged the growth time of water tree in the high-frequency water environment of high field intensity.The water tree resistant property of insulating material represents that by water tree growth resistant RWTG computing formula is as follows:
(L: the distance of needle plate electrode; WTL: the maximum length of water tree)
Concrete method of testing is with reference to ASTM D6097-01a " standard test method of the relative tolerance of solid insulating material emitting shape water tree growth ".
Press insulated cable material as Insulation Material in the anti-water tree of the present invention's preparation, prepare in the anti-water tree and press insulated cable.Press cross-linked polyethylene insulated cable material to use conventional two rank extruding and pelletizing process to produce in the anti-water tree of the present invention.The anti-water tree of middle pressure cross-linked polyethylene insulated cable material presses anti-water to set power cable with cross-linked polyethylene insulation on catenary suspension type continuous vulcanization CCV cross-linking production line in the preparation.Power cable belongs to the version of multicore cable, its inner core is conductor, insulating barrier and the restrictive coating composition of cable successively to outer field structure, can prepare and press anti-water tree power cable with cross-linked polyethylene insulation in the environment-friendly halogen-free flame-proof, or press anti-water tree power cable with cross-linked polyethylene insulation in the polyvinyl chloride.
The growth of the anti-water of the present invention tree has solved this technical bottleneck of growth of cable insulation self water tree, prolongs cable useful life.
Embodiment
The present invention is further illustrated below in conjunction with specific embodiment.
Embodiment 1: the microwave preparation organic montmorillonite
Add imvite 25g, deionized water 750g, be warming up to 75 degree, drip the aqueous solution that contains bromination dinonyl dimethylammonium 12g of 20% concentration, after dropwising, every 45 minutes, use Microwave Treatment 7 minutes, stirred 5 hours, suction filtration, the deionized water wash precipitation, silver nitrate (0.1mol/L) detects less than bromide ion, and vacuumize is to constant weight, grind and sieve, promptly get organic modification montmonrillonite through 200 orders.
Embodiment 2: the preparation of middle pressure cross-linked polyethylene insulated cable material
The middle parts by weight prescription of cross-linked polyethylene insulated cable material of pressing is formed:
100 parts of low density polyethylene (LDPE)s
1.8 parts of cumyl peroxides
0.6 part of dual-tert-butyl peroxidating cumene
0.1 part of tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester
4,0.3 part of 4 '-thiobis (3 methy 6 tert butyl phenol)
Embodiment 3--9: according to embodiment 2, change the prescription of composite anti-water tree growth stimulator, press cross-linked polyethylene insulated cable material in the anti-water tree of preparation, see Table 1:
Table 1. adds the middle pressure insulated cable material of different anti-water tree growth stimulator preparation with reference to the basic recipe of embodiment 2
| Embodiment | The hydrogenation glycan | Organic montmorillonite | Maleic anhydride grafts | Silicone polymer | RWTG |
| 2 | -- | -- | -- | -- | 6.2 |
| 3 | 0.5 | -- | -- | -- | 15.6 |
| 4 | -- | 0.1 | -- | -- | 11.4 |
| 5 | -- | -- | 7 | -- | 15.2 |
| 6 | -- | -- | -- | 0.1 | 9.5 |
| 7 | 0.5 | 0.1 | 7 | 0.1 | 24.5 |
| 8 | 0.6 | 0.1 | 6 | 0.1 | 24.3 |
| 9 | 0.5 | 0.2 | 6 | 0.1 | 24.6 |
Unit of weight in the table: part
As shown in Table 1, the adding of the anti-water tree of Compositional type agent, its water tree resistant property obviously is better than the agent of single anti-water tree.
Embodiment 10: the preparation of middle pressure cross-linked polyethylene insulated cable material
The middle parts by weight prescription of cross-linked polyethylene insulated cable material of pressing is formed:
100 parts of low density polyethylene (LDPE)s
2.0 parts of cumyl peroxides
0.2 part of benzoyl peroxide
0.2 part of dual-tert-butyl peroxidating cumene
0.05 part of tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester
Two (octadecyl esters) 0.05 part of thio-2 acid
4,0.3 part of 4 '-thiobis (3 methy 6 tert butyl phenol)
Embodiment 11-17: according to embodiment 10, change the prescription of composite anti-water tree growth stimulator, press insulated cable material in the anti-water tree of preparation, see Table 2:
Table 2. adds the middle pressure insulated cable material of different anti-water tree growth stimulator preparation with reference to the basic recipe of embodiment 10
| Embodiment | The hydrogenation glycan | Organic montmorillonite | Maleic anhydride grafts | Silicone polymer | RWTG |
| 10 | -- | -- | -- | -- | 6.3 |
| 11 | 0.5 | -- | -- | -- | 15.4 |
| 12 | -- | 0.1 | -- | -- | 11.7 |
| 13 | -- | -- | 7 | -- | 15.5 |
| 14 | -- | -- | -- | 0.1 | 9.3 |
| 15 | 0.5 | 0.1 | 7 | 0.1 | 24.4 |
| 16 | 0.6 | 0.1 | 6 | 0.1 | 24.3 |
| 17 | 0.5 | 0.2 | 6 | 0.1 | 24.5 |
As shown in Table 2, the adding of the anti-water tree of Compositional type agent, its water tree resistant property still obviously is better than the agent of single anti-water tree.
Embodiment 18: the preparation of the anti-water tree of middle pressure power cable with cross-linked polyethylene insulation
Utilize the anti-water tree of the middle pressure cross-linked polyethylene insulated cable material of embodiment 17 preparations, on catenary suspension type continuous vulcanization CCV cross-linking production line, press anti-water tree power cable with cross-linked polyethylene insulation in the preparation.Power cable belongs to the version of multicore cable, its inner core is conductor, insulating barrier and the restrictive coating composition of cable successively to outer field structure, according to the customer requirement stranding, or steel-tape armouring or wire armoring, or twine the plastic-aluminum waterproofing membrane, or twine mica tape, or extrusion molding environment-friendly halogen-free flame-proof cable cover(ing), or the polyvinyl chloride cable sheath, can prepare and press anti-water tree power cable with cross-linked polyethylene insulation in the environment-friendly halogen-free flame-proof, or press anti-water tree power cable with cross-linked polyethylene insulation in the polyvinyl chloride.
Claims (4)
1, a kind of composite anti-water tree growth stimulator is characterized in that comprising hydrogenation glycan, organic montmorillonite, maleic anhydride grafts and the silicone polymer of molecular weight between 1000-5000, and the parts by weight prescription is formed:
Hydrogenation glycan 0.2-1 part
Organic montmorillonite 0.01-1.5 part
Maleic anhydride grafts 2-10 part
Silicone polymer 0.01-1.5 part
Maleic anhydride grafts is a kind of or its mixture in grafted low density polyethylene thing, medium density polyethylene graft, the ethylene vinyl acetate copolymer graft material, the hydrogenation glycan is a kind of or its mixture in hydrogenation polydextrose or the hydrogenation resistant maltodextrin material, silicone polymer is a kind of or its mixture in methyl polysiloxane, propyl group methyl polysiloxane, the phenyl methyl silicone materials
The parts by weight prescription of organic montmorillonite is formed,
Imvite 20-40 part
Deionized water 600-1000 part
Aqueous solution 10-20 part of 20% concentration bromination dinonyl dimethylammonium.
2, press insulated cable material in a kind of anti-water tree, it is characterized in that parts by weight prescription composition:
100 parts of low density polyethylene (LDPE)s
Maleic anhydride grafts 2-10 part
Hydrogenation glycan 0.2-1 part
Organic montmorillonite 0.01-1.5 part
Silicone polymer 0.01-1.5 part
Crosslinking agent 2-3 part
Antioxidant 0.3-0.5 part
Maleic anhydride grafts is the grafted low density polyethylene thing, the medium density polyethylene graft, a kind of or its mixture in the ethylene vinyl acetate copolymer graft material, the hydrogenation glycan is a kind of or its mixture in hydrogenation polydextrose or the hydrogenation resistant maltodextrin material, silicone polymer is a methyl polysiloxane, the propyl group methyl polysiloxane, a kind of or its mixture in the phenyl methyl silicone materials, crosslinking agent is a cumyl peroxide, benzoyl peroxide, a kind of or its mixture in the dual-tert-butyl peroxidating cumene material, antioxidant is a tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester, thio-2 acid two (octadecyl ester), 4, a kind of or its mixture in 4 '-thiobis (3 methy 6 tert butyl phenol) material
The parts by weight prescription of organic montmorillonite is formed,
Imvite 20-40 part
Deionized water 600-1000 part
Aqueous solution 10-20 part of 20% concentration bromination dinonyl dimethylammonium.
3, press insulated cable material in the anti-water tree according to claim 2, it is characterized in that the parts by weight prescription of organic montmorillonite is formed,
Imvite 20-40 part
Deionized water 600-1000 part
Aqueous solution 10-20 part of 20% concentration bromination dinonyl dimethylammonium
Add imvite 20-40 part, deionized water 600-1000 part, be warming up to the 70-80 degree, dropping contains the aqueous solution of bromination dinonyl dimethylammonium 10-20 part of 20% concentration, every 30-60 minute, use Microwave Treatment 5-10 minute, stirred 5 hours, suction filtration, deionized water wash precipitation, vacuumize be to constant weight, grinds and sieve through 200 orders.
4, press insulated cable in a kind of anti-water tree, inner core is conductor, insulating barrier and the restrictive coating composition of cable successively to outer field structure, it is characterized in that pressing insulated cable material as Insulation Material in the anti-water tree according to claim 2, press anti-water tree power cable with cross-linked polyethylene insulation in the preparation environment-friendly halogen-free flame-proof, or press anti-water tree power cable with cross-linked polyethylene insulation in the polyvinyl chloride.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810028374A CN100592435C (en) | 2008-05-29 | 2008-05-29 | Water resistance tree medium voltage insulated cable material and cable |
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| CN200810028374A CN100592435C (en) | 2008-05-29 | 2008-05-29 | Water resistance tree medium voltage insulated cable material and cable |
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| CN100592435C true CN100592435C (en) | 2010-02-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109251392A (en) * | 2018-08-14 | 2019-01-22 | 重庆瑞普电气实业股份有限公司 | A kind of water-tree-resistantmedium medium voltage crosslinked cable |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866706B (en) * | 2010-06-08 | 2011-08-31 | 四川大学 | Cross-linked polyethylene power cable nano repairing liquid and repairing method thereof |
| CN102020801B (en) * | 2010-11-25 | 2012-06-13 | 安吉鼎烽塑料有限公司 | Halogen-free flame-retardant polyethylene foaming plastic and preparation method |
| CN103304941A (en) * | 2013-05-14 | 2013-09-18 | 安徽旺达铜业发展有限公司 | Triphenyl phosphate modified cable sheathing compound |
| CN103366902B (en) * | 2013-07-12 | 2016-01-13 | 广州番禺五羊电缆制造有限公司 | Insulated cable preparation method is pressed in a kind of water resistant tree |
| CN103467818A (en) * | 2013-08-26 | 2013-12-25 | 晶锋集团股份有限公司 | Water tree-resistant polyethylene insulated cable material and preparation method thereof |
| CN106349552B (en) * | 2016-08-26 | 2018-03-02 | 江苏德威新材料股份有限公司 | A kind of water resistant tree semi-conductive shielding material and preparation method thereof |
| CN112029167A (en) * | 2019-06-03 | 2020-12-04 | 南京中超新材料股份有限公司 | Water tree resistant crosslinked polyethylene insulation material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109251392A (en) * | 2018-08-14 | 2019-01-22 | 重庆瑞普电气实业股份有限公司 | A kind of water-tree-resistantmedium medium voltage crosslinked cable |
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