Unlock instant, AI-driven research and patent intelligence for your innovation.

A hard ethylene-propylene insulating material for multi-core thin-wall insulated control lines

A technology of thin-wall insulation and ethylene-propylene insulation, applied in the field of hard ethylene-propylene insulation materials for multi-core thin-wall insulated control lines, which can solve the difficulties in processing and extrusion of reinforcing agents, increase the degree of insulation flattening, and easily cause scorch Burning and other problems, to reduce the degree of insulation flattening, reduce insulation costs, improve the effect of service life

Active Publication Date: 2020-07-14
SHANGHAI LANHAO ELECTRIC
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A common way to improve the hardness and tear resistance of ethylene-propylene rubber is to add a certain amount of low-density polyethylene to modify ethylene-propylene rubber through the high hardness and high tear resistance of low-density polyethylene itself, but polyethylene is the most deadly The disadvantage is that it will be plasticized at high temperature, which will increase the flattening of the insulation during the vulcanization process of the outer sheath after the control wire is cabled. Therefore, other methods are needed to improve the hardness of ethylene-propylene rubber at high temperature.
Another method is to add a large amount of reinforcing agent to increase the hardness, but a large amount of reinforcing agent will cause difficulties in processing and extrusion, and it is very prone to scorch

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0022] A hard ethylene-propylene insulating material for a multi-core thin-walled insulated control line disclosed by the present invention, its preparation steps are as follows:

[0023] Choose 100 parts of EPDM rubber, 5 parts of modified phenolic resin, 1 part of anti-aging agent MB, 1 part of anti-aging agent RD, 3 parts of microcrystalline wax, 3 parts of PL-400, 1 part of TAIC, 3 parts of DCP, semi-calcined clay 60 parts, 4 parts paraffin oil.

[0024] In the first-stage mixing process, the mixing temperature needs to reach 120°C, and the filter mesh is 80 mesh; after the second-stage vulcanization, it is parked for 24 hours for continuous sulfur; during the continuous sulfur extrusion process, the temperature of the extruder Set at 65~90℃, vulcanization steam pressure 1.3MPa, traction speed 30m / min, insulation thickness 0.4.

[0025] The thinnest insulation point of the 12-core control wire prepared with this formula is 0.38mm after the sheath is extruded, and it will ...

specific Embodiment 2

[0027] A hard ethylene-propylene insulating material for a multi-core thin-walled insulated control line disclosed by the present invention, its preparation steps are as follows:

[0028] Choose 100 parts of EPDM rubber, 10 parts of modified phenolic resin, 2 parts of anti-aging agent MB, 1.5 parts of anti-aging agent RD, 4 parts of microcrystalline wax, 2 parts of PL-400, 2 parts of TAIC, 3.5 parts of DCP, semi-calcined 75 parts of pottery clay, 6 parts of paraffin oil.

[0029] In the first-stage mixing process, the mixing temperature needs to reach 120°C, and the filter mesh is 80 mesh; after the second-stage vulcanization, it is parked for 24 hours for continuous sulfur; during the continuous sulfur extrusion process, the temperature of the extruder Set at 65~90℃, vulcanization steam pressure 1.4MPa, traction speed 35m / min, insulation thickness 0.35.

[0030] The thinnest insulation point of the 24-core control wire prepared with this formula is 0.33mm after the sheath is...

specific Embodiment 3

[0032] A hard ethylene-propylene insulating material for a multi-core thin-walled insulated control line disclosed by the present invention, its preparation steps are as follows:

[0033] Choose 100 parts of EPDM rubber, 15 parts of modified phenolic resin, 3 parts of anti-aging agent MB, 2 parts of anti-aging agent RD, 5 parts of microcrystalline wax, 3 parts of PL-400, 1 part of TAIC, 4 parts of DCP, and 90 parts of calcined clay parts, 8 parts of paraffin oil.

[0034] In the first-stage mixing process, the mixing temperature needs to reach 120°C, and the filter mesh is 80 mesh; after the second-stage vulcanization, it is parked for 24 hours for continuous sulfur; during the continuous sulfur extrusion process, the temperature of the extruder Set at 65~90℃, vulcanization steam pressure 1.5MPa, traction speed 40m / min, insulation thickness 0.3.

[0035] The thinnest insulation point of the 36-core control wire prepared with this formula is 0.27mm after the sheath is extruded...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
flash pointaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses a hard ethylene-propylene insulating material for a multi-core thin-wall insulating control line. The hard ethylene-propylene insulating material is prepared from the followingraw materials in parts by weight: 100 parts of ethylene-propylene-diene monomer, 5-15 parts of modified phenolic resin, 1-3 parts of anti-ageing agent MB, 1-2 parts of anti-aging agent RD, 3-5 partsof microcrystalline wax, 1-3 parts of PL-400, 1-3 parts of TAIC, 3-4 parts of DCP, 60-90 parts of semi-calcined clay and 4-8 parts of paroline. The hard ethylene-propylene insulating material has theadvantages that insulating flattening degree of the thin-wall insulating control line can be effectively reduced, the finished product control line from being insulated and cracked as a result of frequent bending in a follow-up using process is guaranteed, the service life of the control line is greatly prolonged, and production cost of enterprises is reduced.

Description

technical field [0001] The invention belongs to the technical field of insulating materials for cable control lines, and in particular relates to a hard ethylene-propylene insulating material suitable for multi-core thin-wall insulated control lines with a wall thickness of 0.2-0.6 mm. Background technique [0002] For multi-core cabled control lines, the focus of its performance is completely different from that of medium and high voltage power cable insulation. The main performances are: 1. Electrical performance requirements: power line insulation needs to have high volume resistivity, breakdown Intensity, small loss tangent; while the control line insulation generally has a voltage level of 250V, which generally does not exceed 1kV, so the requirements for electrical performance are relatively low. 2. Number of cores and extrusion force: Power lines are generally single-core, three-core or five-core, and the extrusion force between cores can be ignored during continuous ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L61/14C08L91/06C08K13/02C08K5/14C08K5/3492C08K3/34
CPCC08L23/16C08L2205/025C08L2205/035C08L61/14C08L91/06C08K13/02C08K5/14C08K5/34924C08K3/346
Inventor 钱章兴王兵兵田敏丁国生
Owner SHANGHAI LANHAO ELECTRIC