CN103000309A - Waterproof process of rubber sheathed cable joints and material applied thereby - Google Patents
Waterproof process of rubber sheathed cable joints and material applied thereby Download PDFInfo
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- CN103000309A CN103000309A CN2011102728081A CN201110272808A CN103000309A CN 103000309 A CN103000309 A CN 103000309A CN 2011102728081 A CN2011102728081 A CN 2011102728081A CN 201110272808 A CN201110272808 A CN 201110272808A CN 103000309 A CN103000309 A CN 103000309A
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Abstract
The invention relates to a cable preparation process and material applied thereby, in particular to a waterproof process for rubber sheathed cable joints. A conductive core or cable insulated core behind a mold core is connected with a pull wire, and a joint is covered with rubber compound. Extruded rubber covers the joint from the connection of the pull wire. The rubber compound softens at high temperature and adheres with the conductive core or cable insulated core and is then vulcanized in a vulcanizing tube. Steam is blocked outside the conductive core or cable insulated core. The rubber compound comprises, by weight, 50-100 parts of chloroprene rubber, 0-50 parts of natural rubber, and 5-50 parts of carbon blank or/and white carbon black. A preparation process of the rubber compound includes the steps of plastifying the natural rubber in a milling unit for 5-30 minutes at the temperature of from 55 DEG C to 80 DEG C, and adding the chloroprene rubber before blending; and adding other components to blend to obtain the finished product. Entering water in the vulcanizing process of the rubber sheathed cable is effectively prevented.
Description
Technical field
The present invention relates to a kind of preparation technology of cable and the material of application thereof, a kind of technique that prevents sulfuration steam entering into rubber sleeve cable especially is provided, and a kind of material of this process application is provided.
Background technology
Continuous vulcanization is generally adopted in the core of Plastic-sheathed Cable, rubber-covered and sheath production, continuous vulcanization is to make the core of firm extrusion handpiece for extrusion type rubber insulation or sheath or cable (following general designation Plastic-sheathed Cable), by continuous pressure (for example more than the steam pressure 0.7-1.0Mpa) steam pipe, vulcanize in high temperature (for example 170-200 ℃) steam, the curing tube rear end passes to again a large amount of water under high pressure coolings.Objectively because of between stranded conductor, between each core of stranding, all have the gap between cable core and sheath, add that sulfuration steam pressure is high, very easily cause cable in sulfidation, steam immerses and longitudinal extension from port, cause the cable water inlet, its length reaches about 100 meters usually.The cable water inlet has a strong impact on quality, for example causes the copper conductor oxidation, seriously will draw security incident.Prior art way commonly used is to cut off this section cable, causes the waste of cable.
Such as Chinese patent CN101256856 disclosed " a kind of method that prevents sulfuration steam entering into rubber sleeve cable ", first draught line is pulled through core rod when extruding, the core rod back with extrude wire terminal, the sizing material of extruding begins to encase the line that extrudes of joint and joint back from the draught line joint location, enter again the curing tube sulfuration, so that steam is stopped in conductor wire core or cable insulation core outside.But the reason that the method is difficult to accomplish the end in view is: 1, the rubber-covered of cable and sheath material are without any bond performance, processing performance and physical property are relatively poor, its resistance to water is extreme difference also, do not possess the performance with metal, the framework material excellent bonds such as nonmetal, thus high steam still immerse easily Plastic-sheathed Cable from the joint inner.2, because the core of sizing material and joint can not excellent bonds, and the space in the sleeve for rubber cable core is communicated with the space of draught line inside, high steam still can arrive Plastic-sheathed Cable inside from the end immersion of draught line.
Summary of the invention
For problems of the prior art, the object of the present invention is to provide a kind of Plastic-sheathed Cable joint to prevent water inlet technique, prevent that Plastic-sheathed Cable sulfuration steam entering into rubber sleeve cable in manufacturing process is inner.
To achieve these goals, the invention provides following technical scheme:
Plastic-sheathed Cable joint of the present invention is prevented water inlet technique, extrude in the sulfuration production process at conductor wire core or cable insulation core, draught line when extruding is pulled out core rod, conductor wire core or cable insulation core carry out joint at back and the draught line of core rod, the sizing material of extruding begins to encase joint from the joint location of draught line, the outer parcel of joint rubber composition; Rubber composition at high temperature softening and with conductor wire core or the adhesion of cable insulation core, enter again curing tube and vulcanize, steam namely is stopped in conductor wire core or cable insulation core outside.
Preferably, the periphery wrap insulate water blocking tape of rubber composition.
Plastic-sheathed Cable joint of the present invention is prevented water inlet technique, and have following beneficial effect: the sizing material of 1, extruding has higher temperature, and heat conducts to rubber composition, the softening or fusing of rubber composition, and fully bonding with conductor wire core or cable insulation core.2, in curing tube, rubber composition is heated and further melts, and is further bonding with conductor wire core or cable insulation core.3, the bonding rubber composition of fusing is so that gapless between the joint conductor wire core of Plastic-sheathed Cable, cable insulation core and the rubber-covered, and sulfuration steam all can't enter Plastic-sheathed Cable inside from the end of joint and draught line.
It is low to possess fusing point in order to ensure above-mentioned rubber composition, and viscosity is good, above-mentioned rubber composition, and its component comprises by weight: neoprene, 50～100 parts; Natural rubber, 0～50 part; Carbon black is or/and 5～50 parts of white carbons.
Preferably, described rubber composition, its component is by weight also comprising: promoter, 1～5 part; 5～15 parts of tackifier; 2～8 parts of activating agents; 0.5～1.5 part in age resistor; Electrically the improvement filler is 5～15 parts; 0.5～1.5 part of lubricant.
Preferably, described promoter is NA-22 and/or DM; Described tackifier are phenolic resins; Described activating agent is zinc oxide; Described age resistor is RD; Described electrical improvement filler is calcinated argil; Described lubricant is stearic acid.
The step of preparation process of described rubber composition comprises:
Step 1: natural rubber is plasticated in rubber preparing device, and temperature is controlled in 55 ℃～80 ℃ scopes;
Step 2: add the neoprene blend after 5～30 minutes;
Step 3: get finished product after adding other component blend.
It is for subsequent use that the material that makes can be made thin adhesive tape.
Description of drawings
Fig. 1 is the joint schematic diagram of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment technical solution of the present invention is further specified, is not considered as limiting the scope of the invention:
Plastic-sheathed Cable joint of the present invention is prevented water inlet technique, extrude in the sulfuration production process at conductor wire core or cable insulation core, draught line when extruding is pulled out core rod, conductor wire core or cable insulation core carry out joint at back and the draught line of core rod with the method for bunchy establishment, the outer parcel of joint rubber composition; The sizing material of extruding begins to encase joint from the joint location of draught line, rubber composition at high temperature softening and with conductor wire core or the adhesion of cable insulation core, enter again curing tube and vulcanize, steam namely is stopped in conductor wire core or cable insulation core outside.The periphery wrap insulate water blocking tape of rubber composition.
As shown in Figure 1, be the joint schematic diagram of the preferred embodiment of the present invention.Get Plastic-sheathed Cable that one section external diameter equates with the cable insulation core as draught line.The end of cable insulation core and the end of draught line are all divested rubber-covered, expose conductor wire core.Using conductor bunchy joint that the conductor wire core of end is connected in the end of cable insulation core with draught line connects.Periphery parcel rubber composition at conductor bunchy joint.Periphery wrap insulate water blocking tape at rubber composition.
It is low to possess fusing point in order to ensure above-mentioned rubber composition, and viscosity is good, and above-mentioned rubber composition can be made by one of following any assembly side:
Prescription one:
Neoprene, 100 parts; Natural rubber, 0 part; Zinc oxide, 5 parts; Carbon black, 15 neoprenes, 100 parts; Natural rubber, 0 part; Zinc oxide, 5 parts; Carbon black, 15 parts; White carbon, 15 parts; Calcinated argil, 10 parts; RD, 1 part; Stearic acid, 1 part; NA-22,1 part; DM, 2 parts; Phenolic resins, 10 parts.
Prescription two:
Neoprene, 90 parts; Natural rubber, 10 parts; Zinc oxide, 5 parts; Carbon black, 15 parts; White carbon, 15 parts; Calcinated argil, 10 parts; RD, 1 part; Stearic acid, 1 part; NA-22,1 part; DM, 2 parts; Phenolic resins, 10 parts.
Prescription three:
Neoprene, 80 parts; Natural rubber, 20 parts; Zinc oxide, 5 parts; Carbon black, 15 parts; White carbon, 15 parts; Calcinated argil, 10 parts; RD, 1 part; Stearic acid, 1 part; NA-22,1 part; DM, 2 parts; Phenolic resins, 10 parts.
Prescription four:
Neoprene, 70 parts; Natural rubber, 30 parts; Zinc oxide, 5 parts; Carbon black, 15 parts; White carbon, 15 parts; Calcinated argil, 10 parts; RD, 1 part; Stearic acid, 1 part; NA-22,1 part; DM, 2 parts; Phenolic resins, 10 parts.
Prescription five:
Neoprene, 60 parts; Natural rubber, 40 parts; Zinc oxide, 5 parts; Carbon black, 15 parts; White carbon, 15 parts; Calcinated argil, 10 parts; RD, 1 part; Stearic acid, 1 part; NA-22,1 part; DM, 2 parts; Phenolic resins, 10 parts.
Prescription six:
Neoprene, 50 parts; Natural rubber, 50 parts; Zinc oxide, 5 parts; Carbon black, 15 parts; White carbon, 15 parts; Calcinated argil, 10 parts; RD, 1 part; Stearic acid, 1 part; NA-22,1 part; DM, 2 parts; Phenolic resins, 10 parts.
The rubber composition that above-mentioned six assembly sides make, performance is as follows after the sulfuration:
As seen rubber composition of the present invention has good bond properties, has more excellent physical and mechanical properties or water resistance after the sulfuration, can extensively adopt in cable industry.
The step of preparation process of described rubber composition comprises:
Step 1: natural rubber is plasticated in rubber preparing device, and temperature is controlled in 55 ℃～80 ℃ scopes;
Step 2: add the neoprene blend after 5～30 minutes;
Step 3: get finished product after adding other component blend.
The material that makes is can cutting rectangular into about the rubber of wide 2cm-3cm, long 10cm-15cm, the about 2mm-3mm of thickness, the joint that duplicate packages overlays on cable insulation core and draught line is thus so that the steam in the curing tube is seamless advances, can not enter insulated wire cores inside, blocking-up steam reaches the purpose that prevents into water again.
Claims (6)
1. the Plastic-sheathed Cable joint is prevented water inlet technique, it is characterized in that: extrude in the sulfuration production process at conductor wire core or cable insulation core, draught line when extruding is pulled out core rod, conductor wire core or cable insulation core carry out joint at back and the draught line of core rod, the outer parcel of joint rubber composition; The sizing material of extruding begins to encase joint from the joint location of draught line, rubber composition at high temperature softening and with conductor wire core or the adhesion of cable insulation core, enter again curing tube and vulcanize, steam namely is stopped in conductor wire core or cable insulation core outside.
2. the anti-water inlet technique of Plastic-sheathed Cable joint as claimed in claim 1 is characterized in that: the periphery wrap insulate water blocking tape of described rubber composition.
3. the rubber composition of using in the anti-water inlet of the Plastic-sheathed Cable joint as claimed in claim 1 technique, its component comprises by weight:
Neoprene, 50～100 parts; Natural rubber, 0～50 part; Carbon black is or/and 5～50 parts of white carbons.
4. rubber composition as claimed in claim 3, its component is by weight also comprising:
Promoter, 1～5 part; 5～15 parts of vulcanizing agents; 2～8 parts of activating agents; 0.5～1.5 part in age resistor; Electrically the improvement filler is 5～15 parts; 0.5～1.5 part of lubricant.
5. rubber composition as claimed in claim 4, it is characterized in that: described promoter is NA-22 and/or DM; Described tackifier are phenolic resins; Described activating agent is zinc oxide; Described age resistor is RD; Described electrical improvement filler is calcinated argil; Described lubricant is stearic acid.
6. such as claim 3,4 or 5 described rubber compositions, its step of preparation process comprises:
Step 1: natural rubber is plasticated in rubber preparing device, and temperature is controlled in 55 ℃～80 ℃ scopes;
Step 2: add the neoprene blend after 5～30 minutes;
Step 3: get finished product after adding other component blend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102728081A CN103000309A (en) | 2011-09-09 | 2011-09-09 | Waterproof process of rubber sheathed cable joints and material applied thereby |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102728081A CN103000309A (en) | 2011-09-09 | 2011-09-09 | Waterproof process of rubber sheathed cable joints and material applied thereby |
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| CN103000309A true CN103000309A (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102728081A Pending CN103000309A (en) | 2011-09-09 | 2011-09-09 | Waterproof process of rubber sheathed cable joints and material applied thereby |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601932A (en) * | 2013-10-25 | 2014-02-26 | 安徽工贸职业技术学院 | Conductive rubber used for making cable protection sleeves |
| CN103709463A (en) * | 2013-12-30 | 2014-04-09 | 建湖县荣杰橡胶制品有限公司 | Enhanced water-cooled cable sleeve rubber material and manufacturing technology thereof |
| CN105733055A (en) * | 2016-02-02 | 2016-07-06 | 安徽复兴电缆集团有限公司 | Anti-drag strengthened cable |
| CN105788729A (en) * | 2016-05-05 | 2016-07-20 | 四川川东电缆有限责任公司 | Rubber-sleeved cable sealing head water resisting device and method |
| CN111785441A (en) * | 2020-06-23 | 2020-10-16 | 广东日丰电缆股份有限公司 | Rubber sleeve cable production process |
| CN113782275A (en) * | 2020-06-10 | 2021-12-10 | 昆明电缆集团昆电工电缆有限公司 | Water-blocking method for rubber sleeve cable during vulcanization |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202133A (en) * | 2007-11-06 | 2008-06-18 | 远东电缆有限公司 | Spring cable |
| CN101256856A (en) * | 2008-03-12 | 2008-09-03 | 江苏中煤电缆集团有限公司 | Method for preventing sulfuration steam entering into rubber sleeve cable |
| JP2009099385A (en) * | 2007-10-17 | 2009-05-07 | Yazaki Corp | Water cutoff method of joint electric wire |
-
2011
- 2011-09-09 CN CN2011102728081A patent/CN103000309A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009099385A (en) * | 2007-10-17 | 2009-05-07 | Yazaki Corp | Water cutoff method of joint electric wire |
| CN101202133A (en) * | 2007-11-06 | 2008-06-18 | 远东电缆有限公司 | Spring cable |
| CN101256856A (en) * | 2008-03-12 | 2008-09-03 | 江苏中煤电缆集团有限公司 | Method for preventing sulfuration steam entering into rubber sleeve cable |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601932A (en) * | 2013-10-25 | 2014-02-26 | 安徽工贸职业技术学院 | Conductive rubber used for making cable protection sleeves |
| CN103709463A (en) * | 2013-12-30 | 2014-04-09 | 建湖县荣杰橡胶制品有限公司 | Enhanced water-cooled cable sleeve rubber material and manufacturing technology thereof |
| CN105733055A (en) * | 2016-02-02 | 2016-07-06 | 安徽复兴电缆集团有限公司 | Anti-drag strengthened cable |
| CN105788729A (en) * | 2016-05-05 | 2016-07-20 | 四川川东电缆有限责任公司 | Rubber-sleeved cable sealing head water resisting device and method |
| CN113782275A (en) * | 2020-06-10 | 2021-12-10 | 昆明电缆集团昆电工电缆有限公司 | Water-blocking method for rubber sleeve cable during vulcanization |
| CN111785441A (en) * | 2020-06-23 | 2020-10-16 | 广东日丰电缆股份有限公司 | Rubber sleeve cable production process |
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Application publication date: 20130327 |