CN103660494A - Preparation method of semi-conductive water-blocking tape of cable - Google Patents
Preparation method of semi-conductive water-blocking tape of cable Download PDFInfo
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- CN103660494A CN103660494A CN201210320804.0A CN201210320804A CN103660494A CN 103660494 A CN103660494 A CN 103660494A CN 201210320804 A CN201210320804 A CN 201210320804A CN 103660494 A CN103660494 A CN 103660494A
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Abstract
The invention discloses a preparation method of a water-blocking tape with excellent binding property. The preparation method comprises the steps of uniformly coating the surface of a non-woven fabric with one layer of semi-conductive glue, and drying in a high-temperature drying tunnel; and uniformly mixing and stirring raw materials including polystyrene, ethylene propylene rubber, maleic anhydride, water-blocking powder, carbon black, a foaming agent, phenolic resin and selenium dichloride to obtain a mixture, coating the surface with the semi-conductive glue of the non-woven fabric with the mixture, and drying in the high-temperature drying channel to obtain the semi-conductive water-blocking tape of the cable. Therefore, the water-blocking tape prepared by the preparation method integrates the functions of homogenating an electric field, buffering mechanical stress and blocking water, is simple in structure, stable in technical performance and high in applicability, and can be widely applied to the field of power cables.
Description
Technical field
The present invention relates to power cable primary element field, particularly relate to the preparation method of semiconductive waterstop for a kind of cable.
Background technology
Mesohigh power cable is in operation and need to bears the effect of high electric field and high pressure, if while there is the defects such as breakage in the surface of power cable, it makes to produce electric field stress in operation and concentrates, if cable has the existence of water can produce water tree and electricity tree around, causes power cable to puncture.Power cable can be because the conversion of load can cause cable occurrence temperature to change in running, make cable produce the phenomenon of expanding with heat and contract with cold, between the insulated part of cable and protective metal shell, produce gap like this, the moisture in external environment also can be invaded, and produces equally discharge breakdown phenomenon.This can have a strong impact on the safe operation of cable, reduces the service life of cable.
Generally can or extrude semiconductive polymer at the coated outside semi-conductive tape of power cable, can be used as the insulation shielding of cable, in order to uniform electric field.The semiconductive individual layer expansion water strip that traditional cable is used is by semiconductive expansion particulate and semiconductive base band is compound forms, and semi-conductive screen function and water stop function can not reach very good effect, and the padding function of simultaneous buffering mechanical stress does not have yet.
Summary of the invention
The technical problem that the present invention mainly solves is to provide the preparation method of semiconductive waterstop for a kind of cable.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the preparation method of a kind of cable with semiconductive waterstop is provided, comprises that step is:
(1) surface uniform at nonwoven applies one deck semi-conductive adhesive, and dries in high temperature drying tunnel;
(2) raw material polystyrene, EP rubbers, maleic anhydride, water-proofing powder, carbon black, blowing agent, phenolic resins and dichloride selenium mixing and stirring are obtained to mixture, mixture is coated on the surface of the nonwoven that applies semi-conductive adhesive, in high temperature drying tunnel, dry, obtain cable semiconductive waterstop.
In a preferred embodiment of the present invention, the percentage by weight of described raw material is: polystyrene 15-19%, EP rubbers 21-25%, maleic anhydride 2-6%, water-proofing powder 10-14%, carbon black 27-31%, blowing agent 4-8%, phenolic resins 4-8%, dichloride selenium 1-5%.
In a preferred embodiment of the present invention, in step (1), the coating thickness of semi-conductive adhesive is 0.2-0.3mm, and in step (2), the coating thickness of mixture is 0.6-0.8mm.
The invention has the beneficial effects as follows: the preparation method of semiconductive waterstop for cable of the present invention, described cable is that to take rubber and thermoplastic elastomer be material of main part with semiconductive waterstop, it integrates uniform electric field, buffer mechanism stress and water stop function, can extend the service life of power cable, product structure is simple, technical performance is stable, practical, can extensively in power cable field, apply.
The specific embodiment
Below preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
Embodiment mono-:
(1) surface uniform at nonwoven applies one deck semi-conductive adhesive, and the coating thickness of semi-conductive adhesive is 0.2mm, and dries in high temperature drying tunnel;
(2) raw material 15kg polystyrene, 25kg EP rubbers, 2kg maleic anhydride, 14kg water-proofing powder, 27kg carbon black, 8kg blowing agent, 4kg phenolic resins and 5kg dichloride selenium mixing and stirring are obtained to mixture, mixture is coated on the surface of the nonwoven that applies semi-conductive adhesive, wherein the coating thickness of mixture is 0.8mm, in high temperature drying tunnel, dry, obtain cable semiconductive waterstop.
Embodiment bis-:
(1) surface uniform at nonwoven applies one deck semi-conductive adhesive, and the coating thickness of semi-conductive adhesive is 0.3mm, and dries in high temperature drying tunnel;
(2) raw material 19kg polystyrene, 21kg EP rubbers, 6kg maleic anhydride, 10kg water-proofing powder, 31kg carbon black, 4kg blowing agent, 6kg phenolic resins and 1kg dichloride selenium mixing and stirring are obtained to mixture, mixture is coated on the surface of the nonwoven that applies semi-conductive adhesive, wherein the coating thickness of mixture is 0.6mm, in high temperature drying tunnel, dry, obtain cable semiconductive waterstop.
Embodiment tri-:
(1) surface uniform at nonwoven applies one deck semi-conductive adhesive, and the coating thickness of semi-conductive adhesive is 0.25mm, and dries in high temperature drying tunnel;
(2) raw material 17kg polystyrene, 23kg EP rubbers, 4kg maleic anhydride, 12kg water-proofing powder, 29kg carbon black, 6kg blowing agent, 6kg phenolic resins and 3kg dichloride selenium mixing and stirring are obtained to mixture, mixture is coated on the surface of the nonwoven that applies semi-conductive adhesive, wherein the coating thickness of mixture is 0.7mm, in high temperature drying tunnel, dry, obtain cable semiconductive waterstop.
The preparation method of semiconductive waterstop for the cable that the present invention discloses, described waterstop is that to take rubber and thermoplastic elastomer be material of main part, it integrates uniform electric field, buffer mechanism stress and water stop function, can extend the service life of power cable, product structure is simple, technical performance is stable, practical, can extensively in power cable field, apply.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. a preparation method for semiconductive waterstop for cable, is characterized in that, comprise the following steps into:
(1) surface uniform at nonwoven applies one deck semi-conductive adhesive, and dries in high temperature drying tunnel;
(2) raw material polystyrene, EP rubbers, maleic anhydride, water-proofing powder, carbon black, blowing agent, phenolic resins and dichloride selenium mixing and stirring are obtained to mixture, mixture is coated on the surface of the nonwoven that applies semi-conductive adhesive, in high temperature drying tunnel, dry, obtain cable semiconductive waterstop.
2. the preparation method of semiconductive waterstop for cable according to claim 1, it is characterized in that, the percentage by weight of described raw material is: polystyrene 15-19%, EP rubbers 21-25%, maleic anhydride 2-6%, water-proofing powder 10-14%, carbon black 27-31%, blowing agent 4-8%, phenolic resins 4-8%, dichloride selenium 1-5%.
3. the preparation method of semiconductive waterstop for cable according to claim 1, is characterized in that, in step (1), the coating thickness of semi-conductive adhesive is 0.2-0.3mm, and in step (2), the coating thickness of mixture is 0.6-0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210320804.0A CN103660494A (en) | 2012-09-03 | 2012-09-03 | Preparation method of semi-conductive water-blocking tape of cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210320804.0A CN103660494A (en) | 2012-09-03 | 2012-09-03 | Preparation method of semi-conductive water-blocking tape of cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103660494A true CN103660494A (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210320804.0A Pending CN103660494A (en) | 2012-09-03 | 2012-09-03 | Preparation method of semi-conductive water-blocking tape of cable |
Country Status (1)
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| CN (1) | CN103660494A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104744881A (en) * | 2015-03-13 | 2015-07-01 | 芜湖航天特种电缆厂 | Warping tape surface adhesion material and preparation method thereof as well as warping tape and preparation method thereof |
| CN105304180A (en) * | 2015-10-27 | 2016-02-03 | 国网山东省电力公司临沂供电公司 | Anti-flaming and buffering semiconductive water blocking tape for power cables |
| CN107901533A (en) * | 2017-10-19 | 2018-04-13 | 芜湖缆胜电缆新材料有限公司 | A kind of semiconductor waterstop and its preparation process |
-
2012
- 2012-09-03 CN CN201210320804.0A patent/CN103660494A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104744881A (en) * | 2015-03-13 | 2015-07-01 | 芜湖航天特种电缆厂 | Warping tape surface adhesion material and preparation method thereof as well as warping tape and preparation method thereof |
| CN105304180A (en) * | 2015-10-27 | 2016-02-03 | 国网山东省电力公司临沂供电公司 | Anti-flaming and buffering semiconductive water blocking tape for power cables |
| CN107901533A (en) * | 2017-10-19 | 2018-04-13 | 芜湖缆胜电缆新材料有限公司 | A kind of semiconductor waterstop and its preparation process |
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Application publication date: 20140326 |