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Irradiation cross-linking EPDM (Ethylene-Propylene-Diene Monomer) insulating eraser and preparation method thereof

A rubber and irradiation technology, applied in rubber insulators, organic insulators, etc., can solve the problems of unsmooth application of irradiation cross-linked rubber materials and inability to transfer to normal industrial production, etc. The problem of wire adhesion and the effect of avoiding copper wire oxidation

Inactive Publication Date: 2013-06-12
FAR EAST CABLE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the unique softness and adhesion characteristics of rubber materials, and the impact of traditional thermal vulcanization process, the application of radiation cross-linked rubber materials in rubber wire and cable is not smooth, and it has not been able to transfer to normal industrial production for a long time.

Method used

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  • Irradiation cross-linking EPDM (Ethylene-Propylene-Diene Monomer) insulating eraser and preparation method thereof
  • Irradiation cross-linking EPDM (Ethylene-Propylene-Diene Monomer) insulating eraser and preparation method thereof
  • Irradiation cross-linking EPDM (Ethylene-Propylene-Diene Monomer) insulating eraser and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0032] The composition of the radiation crosslinked EPDM insulating rubber of the present embodiment, the proportioning number of parts are shown in Table 1:

[0033] Table 1

[0034]

[0035] Prepare as follows:

[0036] (1) Ingredients: Accurately measure and weigh various materials according to the formula;

[0037] (2) Mixing: Add filler, EPDM rubber, active agent, antioxidant, lubricating aid, mold release agent, anti-adhesive agent, sensitizer, reinforcing agent and plasticizer to the Mix in the internal mixer for 2~3 minutes; then clean the bucket, press the top bolt and continue mixing for 7~8 minutes, the temperature of the glue output is 110~120°C; then turn it on the bag turner at least three times before opening; on the rubber filter machine Filter the glue, use a 20-mesh filter and a 40-mesh filter each;

[0038] (3) Sheeting: After filtering the rubber, press the sheet on the mill, pull it once and roll it; then roll the sheet on the calender, and finally t...

Embodiment 2）

[0049] The composition of the radiation crosslinked EPDM insulating rubber of the present embodiment, the proportioning number of parts are shown in Table 4:

[0050] Table 4

[0051]

[0052] See Example 1 for the preparation steps.

[0053] Insulated wire core 1.5 mm 2The key points of the production process are shown in Table 2:

[0054] Refer to Example 1 for the irradiation process.

[0055] Insulated wire core 1.5 mm 2 After irradiation crosslinking, the properties of EPDM insulating rubber are shown in Table 5:

[0056] table 5

[0057]

Embodiment 3）

[0059] The composition of the radiation crosslinked EPDM insulating rubber of the present embodiment, the proportioning number of parts are shown in Table 6:

[0060] Table 6

[0061]

[0062] See Example 1 for the preparation steps.

[0063] Insulated wire core 1.5 mm 2 The key points of the production process are shown in Table 2:

[0064] Refer to Example 1 for the irradiation process.

[0065] Insulated wire core 1.5 mm 2 After irradiation crosslinking, the properties of EPDM insulating rubber are shown in Table 7:

[0066] Table 7

[0067]

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Abstract

The invention relates to an irradiation cross-linking EPDM (Ethylene-Propylene-Diene Monomer) insulating eraser and a preparation method thereof. The irradiation cross-linking EPDM insulating eraser comprises ingredients in parts by weight: 80-20 parts of EPDM A, 20-80 parts of EPDM B, 2-5 parts of sensitizer, 1-3 parts of anti-sticking agent, 1-3 parts of release agent, 1-3 parts of lubricating auxiliaries, 5-10 parts of active agent, 1-3 parts of antioxidant, 5-10 parts of plasticizer, 50-60 parts of reinforcing agent, and 50-70 parts of filling agent. According to the irradiation cross-linking EPDM insulating eraser and the preparation method thereof, by adopting a new sulfuration mode, namely irradiation cross-linking mode, the problems that the existing direct steam pipeline sulfuration mode causes the oxidation of a copper wire, water of a cable and surface pollution to the cable and the like can be thoroughly avoided.

Description

technical field [0001] The invention relates to a cable insulating rubber and a preparation method thereof, in particular to a radiation crosslinked EPDM insulating rubber and a preparation method thereof. Background technique [0002] Ethylene-propylene rubber has become a widely used insulating material in wire and cable. As the base material of ethylene-propylene rubber, EPDM rubber is a terpolymer of ethylene, propylene and non-conjugated dienes. Diene has a special structure, and only one of the two bonds can be copolymerized. The unsaturated double bond is mainly used as a cross-link, and the other unsaturated one will only become a side chain. The polymer backbone of EPDM rubber is fully saturated. This characteristic makes EPDM rubber have excellent weather resistance, ozone resistance, heat resistance, acid and alkali resistance, water vapor resistance, and color stability. EPDM rubber is non-polar in nature, resistant to polar solutions and chemicals, low water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K5/3492C08K5/134C08J3/24C08J3/28H01B3/28
Inventor 田维生刘青波张会云
Owner FAR EAST CABLE
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