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One-step mixing production process for ethylene propylene diene monomer

A technology of EPDM rubber and production process, which is applied in the field of one-step mixing production process of EPDM rubber, which can solve the problems of high production cost, parking of rubber materials, and high temperature of rubber discharge, so as to improve quality and production efficiency , good temperature stability, and the effect of simplifying the production line

Pending Publication Date: 2021-06-15
ZHEJIANG XINGYU AUTO PARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional two-step method takes a long time for mixing, high discharge temperature, parking of rubber materials, turnover site, many workers, and high production cost.

Method used

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  • One-step mixing production process for ethylene propylene diene monomer
  • One-step mixing production process for ethylene propylene diene monomer
  • One-step mixing production process for ethylene propylene diene monomer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] One-step mixing production process of EPDM rubber: After the auxiliary machine system on the internal mixer is prepared according to the production formula and automatic weighing, the internal mixer starts feeding and mixing, and first feeds EPDM raw rubber, zinc oxide, and stearin Acid operation aid, the pressure of the top bolt is 40-50 MPa, the rotor speed is 40 rpm, kneading for 10 seconds; the top bolt is raised, carbon black and calcium carbonate are added, the pressure bolt is mixed for 40 seconds, and the top bolt is raised Add vulcanizing agent, accelerator, calcium oxide and anti-scorch agent to the plug, the pressure of the top plug is 40-50 MPa, the rotor speed is 30 rpm, and kneading for 40 seconds. When the temperature rises to 80-90 ° C, lift the top Add oil to the bolt; press the top bolt to mix, when the temperature rises to 100-110 degrees, raise the top bolt, knead for 10 seconds, press the top bolt to mix, and discharge glue when the temperature rises...

Embodiment 2

[0030] Different from Example 1, the rubber composition in this example also includes 4-6 parts of foaming agent, which is used to prepare foam glue.

[0031] The one-step mixing production process of EPDM rubber is as follows: the internal mixer starts feeding and mixing, first feeds EPDM raw rubber, zinc oxide, and stearic acid operating aids, the upper bolt pressure is 40-50 MPa, and the rotor speed is 40 Turn / min, knead for 15 seconds; raise the top bolt, add carbon black and calcium carbonate, press the bolt for 45 seconds, raise the top bolt to add vulcanizing agent, accelerator, calcium oxide, foaming agent and anti-scorch agent , the pressure of the top bolt is 40-50 MPa, the rotor speed is 30 rpm, and kneading for 45 seconds. When the temperature rises to 80-90°C, the top bolt is raised to refuel; When the temperature is 100-110 degrees, raise the top bolt, knead for 15 seconds, press the top bolt and knead, and discharge the glue when the temperature rises to 110-125...

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Abstract

The invention discloses a one-step mixing production process for ethylene propylene diene monomer. Through the process route of code scanning and feeding, intelligent weighing, mixing in an internal mixer, first open milling, tabletting, automatic rubber turning and cooling, second open milling, rubber smashing and mill run, third open milling, strip discharging, rubber filtering, cooling of rubber in a rubber cooling line, and receiving, an obtained extruded product is stable in size, smooth in surface and small in particle number, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a one-step mixing production process of EPDM rubber. Background technique [0002] The EPDM rubber strips used for automobile decoration are traditionally prepared using a two-step process. The two-step process: A. Smelting and mixing: cast raw rubber, zinc oxide, stearic acid, press for 30 seconds, lift the plug and add carbon Black and other pressing for 30 seconds, lift the plug to refuel, knead until the temperature rises to 150-160 degrees to remove glue, cool and park for 8-24 hours, and add vulcanization. B refining and vulcanization process: put 1 / 2 of A rubber mixing and pressing for 30 seconds, then add accelerator, vulcanizing agent, foaming agent and other small materials and 1 / 2 car A rubber mixing and pressing for 1.5-2 minutes, the temperature rises to Deglue at 80-90 degrees, cool in the glue cold line, the temperature is ≤30 degrees, and collect the materials for use. The traditional two-step method takes a l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B7/00C08L23/16C08L91/06C08K13/02C08K3/04C08K3/26C08K3/22
CPCB29B7/005B29B7/007C08L23/16C08K2003/265C08K2003/2296C08K2003/2206C08L91/06C08K13/02C08K3/04C08K3/26C08K3/22
Inventor 吴立新泮佳伟李伟
Owner ZHEJIANG XINGYU AUTO PARTS CO LTD
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