CN102399517B - Electric stress relief adhesive for connecting thermal shrinkage cable accessory - Google Patents
Electric stress relief adhesive for connecting thermal shrinkage cable accessory Download PDFInfo
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- CN102399517B CN102399517B CN 201110246946 CN201110246946A CN102399517B CN 102399517 B CN102399517 B CN 102399517B CN 201110246946 CN201110246946 CN 201110246946 CN 201110246946 A CN201110246946 A CN 201110246946A CN 102399517 B CN102399517 B CN 102399517B
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Abstract
The invention discloses an electric stress relief adhesive for connecting thermal shrinkage cable accessories. The electric stress relief adhesive comprises ingredients of, by weight, 20-50 parts of elastomer, 20-50 parts of adhesion agent, 15-50 parts of conductive filling material, 0.5-5 parts of anti-oxidant, 2-5 parts of fire retardant and 0.5-1 part of lubricant. The electric stress relief adhesive for connecting thermal shrinkage cable accessories of the invention has good bonding intensity on aluminium, lead, copper and oil isolating pipe, has excellent bonding sealing, airtight, weatherability and aging resistance in an insulating cable joint, and has proper dielectric constant and volume resistivity, large tensile strength and good effect on mitigating and dispersing electric stress.
Description
Technical field
The present invention relates to a kind of electric stress and evacuate glue, relate in particular to a kind of electric stress for the connection of pyrocondensation cable accessory and evacuate glue.
Background technology
Power cable line is the important component part of railway power system, and power cable terminal is the vitals in the cable line, also is the weak link of cable road reliability service, and about 70% of cable fault all occurs on the cable terminal end.What use at first is housing filling type cable terminal end, but there is the characteristics that volume is big, installation is inconvenient, metal consumption is big, cost is high.At above shortcoming, developed the thermal shrinkage type cable terminal end eighties in 20th century, widely-used in the railway power supply system, advantage is applied widely, makes simple, volume is little, in light weight, but the temperature of heat is wayward when having heat shrink simultaneously, it is proper that the interface of cable terminal end and stress disperse to be difficult for handling, because of the need naked light, install dangerous in inflammable and explosive place.Particularly through more than ten years operation practice, though the terminal fault of thermal shrinkage type cable terminal end much smaller than filling type and dried packet mode cable terminal end, but because above-mentioned shortcoming, fault can not be ignored in recent years.
In recent years, a large amount of pyrocondensation cable accessories that use in transmission of electricity industry and other industry both at home and abroad are for cable terminal end and joint construction bring great convenience.Partly lead self-adhesive tape and 12 stress tubes but the mounting process of finding the middle connection of thermal contraction cable in application uses, technology is loaded down with trivial details.Therefore can develop the reelable a kind of novel filling glue that can control electric field distortion, namely electric stress is evacuated glue, replaces partly leading self-adhesive tape and stress tube with it.
Summary of the invention
In order to solve the prior art above shortcomings, technical problem to be solved by this invention provides a kind of electric stress for the connection of pyrocondensation cable accessory and evacuates glue, have suitable specific inductivity and volume specific resistance, tensile strength is bigger, disperses electric stress to have good effect to relaxing.
The object of the present invention is achieved like this: a kind of electric stress for the connection of pyrocondensation cable accessory is evacuated glue, formed by weight by following component: elastomerics 20-50 part, tackifier 20-50 part, conductive filler material 15-50 part, oxidation inhibitor 0.5-5 part, fire retardant 2-5 part, lubricant 0.5-1 part, described elastomerics is styrene-butadiene rubber(SBR), paracril, isoprene-isobutylene rubber, a kind of or its mixture in chlorohydrin rubber and the urethanes, described fire retardant is aluminium hydroxide, magnesium hydroxide, antimonous oxide, a kind of or its mixture in the decabromodiphynly oxide, described lubricant is stearate.
[0006]Preferably,
[0007]Described tackifier are a kind of or its mixture in terpine resin, ester gum, petroleum resin and the polyisobutene.Tackifier of the present invention can improve flowability and the consistency of whole system.
Described conductive filler material is a kind of or its mixture in graphite, Shawinigan black, conductive mica powder, conductive titanium dioxide and the silver-coated copper powder.Can guarantee that electric stress evacuation glue has good specific inductivity and volume specific resistance.
Oxidation inhibitor of the present invention is polynary hindered phenol type antioxidant, and more preferably four (β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester is generally called antioxidant 1010.
Described lubricant is Zinic stearas.
Adopt industry ordinary method, each component by the back extrusion moulding in rubber extruding machine that stirs fully, is made strip in kneader, can make the electric stress for the connection of pyrocondensation cable accessory of the present invention and evacuate glue.
During use, the electric stress evacuation glue that connects for the pyrocondensation cable accessory of the present invention is wound in power cable terminal and joint construction, can obtains great convenience, have suitable specific inductivity and volume specific resistance, tensile strength is bigger, disperses electric stress to have good effect to relaxing.
With respect to prior art, beneficial effect of the present invention is embodied as:
1. the present invention all has cohesive strength preferably for the electric stress evacuation glue that the pyrocondensation cable accessory connects to aluminium, lead, copper and oil removal pipe and insulation tube, has good being bonded and sealed property, resistance to air loss, weathering resistance, ageing resistance in the insulated cable joint.
2. the present invention is used for electric stress that the pyrocondensation cable accessory connects and evacuates glue and can alleviate electric field stress and concentrate, and improves insulation shield layer cut-off part and gets electric stress and distribute; Hardness (Shao Shi A) is 38-50, the about 5MPa of tensile strength.
3. the present invention is 15-30 for the specific inductivity (1khz) of the electric stress evacuation glue of pyrocondensation cable accessory connection, and volume specific resistance is about 1.0 * 10
11-1.0 * 10
13, avoid equipment in long-time running, the temperature that shelf depreciation causes raises, insulating material is aging.
4. the present invention is used for the electric stress that the pyrocondensation cable accessory connects and evacuates glue based on mold pressing, extrude produce easy to use.
Embodiment
Embodiment 1
According to the corresponding component of table 1 and add-on, take by weighing each component.Each component by the back extrusion moulding in rubber extruding machine that stirs fully, is made strip in kneader, can make the electric stress for the connection of pyrocondensation cable accessory of the present invention and evacuate glue.
Embodiment 2-6
According to the corresponding component of table 1 and add-on, take by weighing each component respectively.Prepare the electric stress for the connection of pyrocondensation cable accessory of the present invention according to embodiment 1 described method respectively and evacuate glue.
Comparative Examples
According to the corresponding component of table 1 and add-on, take by weighing each component.Each component by the back extrusion moulding in rubber extruding machine that stirs fully, is made strip in kneader, can make electric stress and evacuate glue.
Embodiment 1-6 and the made electric stress evacuation glue of Comparative Examples are carried out performance test, and data see Table 1.
Electric stress for the connection of pyrocondensation cable accessory of the present invention is evacuated glue, can solve pyrocondensation or shrinkage 10KV and above hv cable termination and intermediate head place and get the electric field distribution problem.This electric stress is evacuated glue can be wound in the outer semiconductive layer cut-off part of cable, and the electric stress that can be used for cable terminal end and joint is evacuated, and replaces partly leading self-adhesive tape and stress tube, simple installation, composition optimizes with it.Being used for electric stress that the pyrocondensation cable accessory connects, to evacuate the effect of glue be that homogeneous conductor connects caused electric field stress and concentrates, and realizes evenly control, improves the equally distributed degree of electric field, improves the reliability of cable accessory.And play electric stress control and the effect of being sealing adhesive in the certain natural impedance of the terminal formation of cable shield.
Table 1: be used for the electric stress evacuation glue formula table unit that the pyrocondensation cable accessory connects: kilogram
Claims (6)
1. one kind is used for the electric stress evacuation glue that the pyrocondensation cable accessory connects, it is characterized in that, formed by weight by following component: elastomerics 20-50 part, tackifier 20-50 part, conductive filler material 15-50 part, oxidation inhibitor 0.5-5 part, fire retardant 2-5 part, lubricant 0.5-1 part, described elastomerics is a kind of or its mixture in styrene-butadiene rubber(SBR), paracril, isoprene-isobutylene rubber, chlorohydrin rubber and the urethanes, described fire retardant is a kind of or its mixture in aluminium hydroxide, magnesium hydroxide, antimonous oxide, the decabromodiphynly oxide, and described lubricant is stearate.
2. the electric stress for the connection of pyrocondensation cable accessory as claimed in claim 1 is evacuated glue, and it is characterized in that: described tackifier are a kind of or its mixture in terpine resin, ester gum, petroleum resin and the polyisobutene.
3. the electric stress for the connection of pyrocondensation cable accessory as claimed in claim 1 is evacuated glue, and it is characterized in that: described conductive filler material is a kind of or its mixture in graphite, Shawinigan black, conductive mica powder, conductive titanium dioxide and the silver-coated copper powder.
4. the electric stress for the connection of pyrocondensation cable accessory as claimed in claim 1 is evacuated glue, and it is characterized in that: described oxidation inhibitor is polynary hindered phenol type antioxidant.
5. the electric stress for the connection of pyrocondensation cable accessory as claimed in claim 4 is evacuated glue, and it is characterized in that: described oxidation inhibitor is four (β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester.
6. the electric stress for the connection of pyrocondensation cable accessory as claimed in claim 1 is evacuated glue, and it is characterized in that: described lubricant is Zinic stearas.
Priority Applications (1)
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CN 201110246946 CN102399517B (en) | 2011-08-26 | 2011-08-26 | Electric stress relief adhesive for connecting thermal shrinkage cable accessory |
Applications Claiming Priority (1)
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CN 201110246946 CN102399517B (en) | 2011-08-26 | 2011-08-26 | Electric stress relief adhesive for connecting thermal shrinkage cable accessory |
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CN102399517A CN102399517A (en) | 2012-04-04 |
CN102399517B true CN102399517B (en) | 2013-07-03 |
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CN102863926B (en) * | 2012-10-16 | 2014-03-26 | 上海电缆研究所 | Conductive sealant and application thereof |
CN103131352B (en) * | 2013-02-17 | 2014-12-03 | 东莞市瑞为电器配件有限公司 | Electronic protection glue and preparation method thereof |
CN104046308B (en) * | 2013-03-15 | 2016-12-28 | 长春中科应化特种材料有限公司 | A kind of adhesive for electric stress relief and production method thereof |
CN104059568A (en) * | 2013-03-20 | 2014-09-24 | 长春中科应化特种材料有限公司 | Hot melt adhesive capable of evacuating electric stress and production method thereof |
CN104059564B (en) * | 2013-03-20 | 2017-10-03 | 长春中科应化特种材料有限公司 | A kind of waterproof sealing adhesive for electric stress relief and its production method |
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CN105337241A (en) * | 2014-07-31 | 2016-02-17 | 泰科电子(上海)有限公司 | Cold shrinkage type terminal, cold shrinkage type terminal module and manufacturing method therefor |
CN104804295A (en) * | 2015-04-09 | 2015-07-29 | 深圳市沃尔核材股份有限公司 | Electrical stress control hot melting composition and control element provided with hot melting interface |
CN104893040A (en) * | 2015-06-19 | 2015-09-09 | 梁胜光 | Compounded rubber seal ring |
CN105924700A (en) * | 2016-06-21 | 2016-09-07 | 柳州市中配橡塑配件制造有限公司 | Rubber for tubeless tire surface layer |
CN105968779A (en) * | 2016-07-06 | 2016-09-28 | 苏州科淼新材料有限公司 | Iron fiber nano rubber conductive material and preparation method thereof |
CN108250763A (en) * | 2017-11-28 | 2018-07-06 | 安徽华源电缆集团有限公司 | A kind of high intensity braiding layer cable material |
CN112778956B (en) * | 2020-12-31 | 2023-01-03 | 深圳市沃尔核材股份有限公司 | Stress dispersion glue and preparation method thereof |
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CN101210082A (en) * | 2006-12-31 | 2008-07-02 | 比亚迪股份有限公司 | Composition for forming hot-melt adhesive, hot-melt adhesive, and preparing method thereof |
CN101323774A (en) * | 2008-07-28 | 2008-12-17 | 公安部四川消防研究所 | Expansion type fireproofing glue strip for construction |
CN101928535A (en) * | 2010-08-20 | 2010-12-29 | 沈阳天荣电缆材料有限公司 | Hot melting pressure-sensitive adhesive for joint of cable semi-conductive tape and manufacture method thereof |
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CN1107496A (en) * | 1994-02-24 | 1995-08-30 | 化学工业部北京橡胶工业研究设计院 | Electro-conductive pressure sensitive adhesive and producing process thereof |
CN101210082A (en) * | 2006-12-31 | 2008-07-02 | 比亚迪股份有限公司 | Composition for forming hot-melt adhesive, hot-melt adhesive, and preparing method thereof |
CN101323774A (en) * | 2008-07-28 | 2008-12-17 | 公安部四川消防研究所 | Expansion type fireproofing glue strip for construction |
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CN102399517A (en) | 2012-04-04 |
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