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Semiconduction material for high-strength high-hardness saddle-shaped filling strip and preparation method thereof

A saddle-shaped and filling strip technology, which is applied to rubber insulators, organic insulators, etc., can solve the problems of discounted grounding effect shielding effect, lack of electrical conductivity, and poor mechanical properties, so as to reduce damage, improve cross-sectional appearance, and enhance resistance. Effect of Impact and Extrusion Properties

Inactive Publication Date: 2016-02-24
SHANGHAI LANHAO ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the filling strips used by most domestic manufacturers are mostly waste rubber and miscellaneous rubber obtained from production, which not only have poor mechanical properties and low hardness, but also do not have electrical conductivity at all, so that the shielding layers between the three main cores are not connected to each other, resulting in grounding effects. The shielding effect is greatly reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0031] Use 80 parts of natural rubber, 30 parts of high styrene, 4 parts of zinc oxide, 2 parts of stearic acid, 1 part of paraffin wax, 1 part of antioxidant 4010NA, 70 parts of conductive carbon black, 10 parts of graphite powder, and 10 parts of engine oil. Put the above materials into the internal mixer and mix for 6~8min, lift the top plug to sweep the material, repeat twice, then continue mixing until the temperature shows 100℃, discharge the rubber mixture to the open mixer, turn over and mix, then After cooling, put it into the internal mixer and add 0.5 part of accelerant M, 1 part of accelerant DM, 0.2 part of accelerant TMTD, 0.6 part of sulfur, mixing time 40~60s, in the three-roll mill After the finished product is placed for 16 hours, it will be used in the continuous sulfur workshop. During the continuous sulfur extrusion process, the temperature of the extruder is set to 55~80℃, the vulcanizing steam pressure is 1.4MPa, and the pulling speed is 25m / min to obtain ...

specific Embodiment 2

[0032] Use 95 parts of natural rubber, 35 parts of high styrene, 5 parts of zinc oxide, 3 parts of stearic acid, 2 parts of paraffin wax, 1.5 parts of antioxidant 4010NA, 60 parts of conductive carbon black, 20 parts of graphite powder, and 13 parts of engine oil. Put the above materials into the internal mixer for mixing for 6~8 minutes, lift the top plug to sweep the material, repeat twice, then continue mixing until the temperature shows 100℃, discharge the rubber mixture to the open mixer for mixing, then After cooling, put it back into the internal mixer and add 0.75 part of accelerator M, 1.5 part of accelerator DM, 0.35 part of accelerator TMTD, 1 part of sulfur, mixing time 40~60s, grinding on three rolls The sheeting machine opens the strips, and the finished product is placed in the continuous sulfur workshop after being placed for 16 hours. During the continuous sulfur extrusion process, the temperature of the extruder is set to 55~80℃, the vulcanizing steam pressure ...

specific Embodiment 3

[0033] Use 110 parts of natural rubber, 40 parts of high styrene, 6 parts of zinc oxide, 4 parts of stearic acid, 3 parts of paraffin wax, 2 parts of antioxidant 4010NA, 50 parts of conductive carbon black, 30 parts of graphite powder, and 15 parts of engine oil. Put the above materials into the internal mixer for mixing for 6~8 minutes, lift the top plug to sweep the material, repeat twice, then continue mixing until the temperature shows 100℃, discharge the rubber mixture to the open mixer for mixing, then After cooling, put it into the internal mixer and add 1 part of accelerator M1, 2 parts of accelerator DM, 0.5 part of accelerator TMTD, 1.2 parts of sulfur, mixing time 40~60s, and open it on a three-roll mill After the finished product is placed for 16 hours, it will be used in the continuous sulphur workshop. During the continuous sulphur extrusion process, the extruder temperature is set to 55~80℃, the vulcanizing steam pressure is 1.2MPa, and the pulling speed is 25m / mi...

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Abstract

The invention discloses a semiconduction material for a high-strength high-hardness saddle-shaped filling strip and a preparation method thereof. The semiconduction material is prepared from natural rubber, high styrene, an accelerator M, an accelerator DM, an accelerator TMTD, sulphur, zinc oxide, stearic acid, paraffin wax, an anti-aging agent 4010NA, conductive carbon black, graphite powder and engine oil. According to the semiconduction material for the special saddle-shaped rubber jacketed flexible cable filling strip, the high-strength high-hardness filling strip made of the material can support a main cable core and an auxiliary cable core and does not deform when the cable cores are subjected to an extrusion force in the cabling and outer sheath procedures. In addition, through the ultra-high strength, a certain tensile action can be achieved, the destructive action on the cable cores in the cable stretching process is reduced, and the service life of a cable is prolonged. Accordingly, through usage of the filler strip material, not only can the section appearance of the cable be improved, but also filling is more compact and the impact and extrusion resisting performances of the cable are enhanced.

Description

Technical field [0001] The invention relates to the cable industry, in particular to a high-strength and high-hardness semi-conductive material for saddle-shaped filling strips and a preparation method thereof. The shape of the material includes saddle-shaped, circular, fan-shaped and other special shapes. Background technique [0002] The production of rubber sheathed flexible cables has a history of many years in our country. Many cable manufacturers at home and abroad produce and operate this kind of cables with strong mobility and superior performance, which occupies a very important position in cable varieties. [0003] Rubber sheathed flexible cables are generally filled with core gaps. The purpose of filling is to: (1) keep the cable round, so that the outer diameter of the cable after the sheath is rounded and the surface smooth; (2) make the cable into a cable The core structure is stable; (3) The central pad core (multiple insulated cores twisted into a cable) also plays ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L25/06C08K13/02C08K5/09C08K3/06C08K3/04C08K3/22H01B3/28
CPCC08L7/00C08L2203/202C08L2205/035H01B3/28C08L25/06C08K13/02C08K5/09C08K3/06C08K3/04C08K2003/2296
Inventor 钱章兴王兵兵田敏周春杰顾向阳
Owner SHANGHAI LANHAO ELECTRIC
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