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Preparation method of ethylene propylene diene monomer plate

A technology of EPDM rubber and EPDM, which is applied in the field of rubber, can solve the problems of difficult mixing of EPDM rubber, and achieve the effects of improving poor compatibility, increasing strength and toughness

Pending Publication Date: 2021-02-02
无锡市锡山新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems in the prior art, the present invention provides a preparation method of EPDM rubber sheet, which solves the problem of difficult mixing of EPDM rubber, opens the side double bonds from the molecular level, and cooperates with covalent bond chemistry Cross-linking forms a network structure, thereby improving the strength and toughness of EPDM rubber

Method used

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  • Preparation method of ethylene propylene diene monomer plate
  • Preparation method of ethylene propylene diene monomer plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of preparation method of EPDM sheet is as follows:

[0024] Step 1, adding EPDM rubber, natural rubber and maleic anhydride to a pulverizer for pulverization, and stirring uniformly to form a mixture, the pulverization pressure is 2MPa, and the temperature is 20°C;

[0025] Step 2, adding the mixture and the initiator to the mixing equipment and kneading to obtain a mixed cross-linked resin, wherein the mixing temperature is 170°C, the mixing speed is 1000r / min, and the mixing time is 10min;

[0026] Step 3, adding the mixed cross-linked resin and antioxidant into the reactor and kneading to obtain the modified EPDM rubber; wherein, the kneading temperature is 160°C, the kneading stirring speed is 500r / min, and the time is 10min;

[0027] Step 4: Put the vulcanizing agent and filler into the reactor and stir evenly, then vulcanize and extrude to make EPDM sheet. The temperature of the vulcanization treatment is 160°C, the pressure is 10MPa, and the time is 60min...

Embodiment 2

[0035] A kind of preparation method of EPDM sheet is as follows:

[0036] Step 1, adding EPDM rubber, natural rubber and maleic anhydride to a pulverizer for pulverization, and stirring evenly to form a mixture, the pulverization pressure is 5MPa, and the temperature is 40°C;

[0037] Step 2, adding the mixture and the initiator to the mixing equipment and kneading to obtain a mixed cross-linked resin, wherein the mixing temperature is 170°C, the mixing speed is 1500r / min, and the mixing time is 30min;

[0038] Step 3, adding the mixed cross-linked resin and antioxidant into the reactor and kneading to obtain the modified EPDM rubber; wherein, the kneading temperature is 160°C, the kneading stirring speed is 1000r / min, and the time is 30min;

[0039] Step 4: Put the vulcanizing agent and filler into the reactor and stir evenly, then vulcanize and extrude to make EPDM sheet. The temperature of vulcanization is 160°C, the pressure is 10MPa, and the time is 90min.

[0040] Amon...

Embodiment 3

[0047] A kind of preparation method of EPDM sheet is as follows:

[0048] Step 1, adding EPDM rubber, natural rubber and maleic anhydride to a pulverizer for pulverization, and stirring evenly to form a mixture, the pulverization pressure is 4MPa, and the temperature is 30°C;

[0049] Step 2, adding the mixture and the initiator to the mixing equipment and kneading to obtain a mixed cross-linked resin, wherein the mixing temperature is 170°C, the mixing speed is 1400r / min, and the mixing time is 15min;

[0050] Step 3, adding the mixed cross-linked resin and antioxidant into the reactor and kneading to obtain the modified EPDM rubber; wherein, the kneading temperature is 160°C, the kneading stirring speed is 800r / min, and the time is 20min;

[0051] Step 4: Put the vulcanizing agent and filler into the reactor and stir evenly, then vulcanize and extrude to make EPDM sheet. The temperature of vulcanization is 160°C, the pressure is 10MPa, and the time is 70min.

[0052] Among...

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Abstract

The invention belongs to the field of rubbers, particularly relates to a preparation method of an ethylene propylene diene monomer rubber, wherein the ethylene propylene diene monomer rubber comprisesthe following components in parts by mass: 30-60 parts of ethylene propylene diene monomer rubber, 40-80 parts of natural rubber, 10-20 parts of maleic anhydride, 2-6 parts of initiator, 4-8 parts ofvulcanizing agent, 1-3 parts of antioxidant and 14-20 parts of filler. The invention provides a specific preparation method. According to the invention, the problem of high mixing difficulty of the ethylene propylene diene monomer is solved, side double bonds are opened from the molecular level, and a network structure is formed by cooperating with covalent bond chemical cross-linking, so that the strength and toughness of the ethylene propylene diene monomer are enhanced.

Description

technical field [0001] The invention belongs to the field of rubber, and in particular relates to a preparation method of EPDM rubber. Background technique [0002] EPDM rubber is a saturated non-polar rubber, which has excellent resistance to chemical media, heat and oxygen aging, heat and humidity resistance and electrical insulation. It can be used for a long time under the condition of -60 ° C ~ 135 ° C Compared with other general-purpose rubbers, it has the smallest density, high filling capacity, low ablation rate, high specific heat, and good comprehensive performance. Therefore, it is widely used in many fields such as aerospace, rail transit, automobiles, construction, cushioning packaging materials, etc., and the production and consumption have increased rapidly in recent years. However, EPDM rubber is a saturated rubber, and it is difficult to process during mixing. The general sulfur vulcanization system is not suitable, and the vulcanization time is long. At th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/06C08F253/00C08F222/06C08F222/08C08F212/08C08F2/44C08K5/134C08K3/22C08K3/36
CPCC08F255/06C08F253/00C08F2/44C08K5/1345C08K3/22C08K3/36C08K2003/2241C08K2201/011C08F222/06C08F222/08C08F212/08
Inventor 章建良
Owner 无锡市锡山新材料科技有限公司
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