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Process for preparing modified chlorinated polyethylene cable material

By using ethylene-octene copolymer elastomer and chlorinated polyethylene as base materials in cable materials, adding additives such as active magnesium oxide and zinc oxide, and using specific vulcanizing agents and processes, the problem of vulcanization of cable sheath materials has been solved. The problems of low elongation at break and narrow process range during the process improve the physical, mechanical and electrical properties of the cable.

Inactive Publication Date: 2016-04-20
JIANGSU HENGTONG POWER CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used in rubber insulation is EPDM as the base material, using the vulcanizing agent DCP and the vulcanization accelerator TAC. The disadvantages of the compound rubber are: the elongation at break is low, and the process range is narrow during the vulcanization process. If extruded When the temperature is too high, it is easy to break and the elongation rate is unqualified

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1. A kind of preparation technology that is used for modified chlorinated polyethylene cable material comprises the following steps:

[0021] Step 1. First mix 12-14 parts of chlorinated polyethylene (CPE) and 19-21 parts of ethylene-octene copolymer elastomer (POE) in an internal mixer according to weight percentage;

[0022] Step 2. Add 5 to 8 parts of 800# paraffin-based rubber oil, 0.8 to 1 part of activated magnesium oxide, 1 to 2 parts of activated zinc oxide, 0.3 to 0.6 parts of environmental stabilizer, and microcrystalline wax to the internal mixer. 1~2 parts, 0.7~0.9 parts of titanium dioxide, 0.5~0.6 parts of 4,4′bis(α,αdimethylbenzyl)diphenylamine, mixing for 2~3 minutes;

[0023] Step 3. Then, add 25 to 31 parts of modified calcined clay and 5 to 7 parts of superfine talcum powder into the internal mixer and mix for 3 to 5 minutes, and the internal mixer discharges the mixed rubber material;

[0024] Step 4. Pass the mixed rubber material on the...

Embodiment 2

[0034] Embodiment 2. A preparation process for modified chlorinated polyethylene cable material, the formula of each component of the modified chlorinated polyethylene cable material is: chlorinated polyethylene (CPE) 14 kg, ethylene-octyl Polyethylene copolymer elastomer (POE) 19 kg, 800# paraffin-based rubber oil 5 kg, activated magnesium oxide 0.8 kg, zinc oxide 1.0 kg, superfine talcum powder 5 kg, environmental stabilizer 0.5 kg, microcrystalline wax 2 kg titanium 0.8 kg of white powder, 25 kg of modified calcined clay, 0.5 kg of anti-aging agent 4,4′ bis(α,α dimethylbenzyl) diphenylamine, 1.5 kg of vulcanizing agent dicumyl peroxide, vulcanizing aid melamine Acetate triallyl 1.2 kilograms.

[0035] The mass fraction of the octene monomer in the above-mentioned ethylene-octene copolymer elastomer exceeds 20%.

[0036] The preparation method is the same as in Example 1.

[0037] The modified chlorinated polyethylene cable material prepared by this example has the detecti...

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Abstract

The present invention discloses a process for producing a modified chlorinated polyethylene cable material, and the method comprises the following steps: first chlorinated polyethylene and an ethylene-octene copolymer elastomer are mixed in a mixer in weight ratio; then 800 # paraffinic base rubber oil, active magnesium oxide, active zinc oxide, an environmental protection stabilizer, microcrystalline wax, titanium dioxide and 4,4 'bis (alpha, alpha-dimethylbenzyl) diphenylamine are added into the mixer; then modified calcined clay and superfine talc powder are added into the mixer for blending, and a blended rubber material is discharged from the mixer; after filtered rubber is stored for 24 hours, the rubber material is again put into the mixer for blending, vulcanizing agent dicumyl peroxide and triallyl cyanurate are added for blending for about 2-3min, and the material is discharged. The process is in favor of even addition of inorganic powder, the process range is wide, and the process greatly accelerates the vulcanization rate, increases the crosslink density, and improves the heat resistance properties of the vulcanized rubber.

Description

technical field [0001] The invention relates to a preparation process of a cable material, in particular to a preparation process for a modified chlorinated polyethylene cable material. Background technique [0002] The cable sheath is the outermost layer of the cable. The cable sheath material not only needs to have excellent physical properties, such as tensile strength, elongation at break, etc., but also needs to have good flame retardancy. Commonly used in rubber insulation is EPDM as the base material, using the vulcanizing agent DCP and the vulcanization accelerator TAC. The disadvantages of the compound rubber are: the elongation at break is low, and the process range is narrow during the vulcanization process. If extruded When the temperature is too high, it is easy to fail the elongation at break. Contents of the invention [0003] The purpose of the present invention is to provide a preparation process for modified chlorinated polyethylene cable material. The m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/28C08L91/06C08K13/06C08K3/34C08K3/22C08K5/18C08K5/14H01B3/44
CPCC08K2201/011C08K2201/014C08L23/0815C08L2201/08C08L2203/202C08L2205/02C08L2205/025C08L2205/03C08L2205/035C08L2312/00H01B3/441H01B7/18C08L23/286C08L91/00C08L91/06C08K13/06C08K9/00C08K2003/222C08K2003/2296C08K2003/2241C08K5/18C08K3/346C08K3/34C08K5/3492C08K5/14C08K5/34924C08K13/02C08K5/34922
Owner JIANGSU HENGTONG POWER CABLE
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