文章摘要
Extrusion Process of EPDM Sealing Gasket Compound with Resin Curing System for Plate Heat Exchanger
Received:March 19, 2019  Revised:March 19, 2019
DOI：10.12136/j.issn.1000-890X.2020.07.0538
Key Words: plate heat exchanger；sealing gasket；EPDM；resin cuing system；extrusion process
Author NameAffiliationE-mail
CAO Xinjun* Qingdao Liyang Rubber Technology Co. ，Ltd lytirecxj@163.com 
ZHAO Liang China CAMC Engineering Co. ，Ltd  
LI Wei Qingdao Liyang Rubber Technology Co. ，Ltd  
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Abstract:
      The extrusion process of ethylene propylene diene rubber（EPDM） sealing gasket compound with resin curing system for plate heat exchanger was studied. For the problems of unstable cutting weight，rough surface，easy scorch，large shrinkage rate of the extrusion rubber strip，air holes，deformation of the cured sealing gasket，and low production efficiency，the extrusion process was modified，for example，by using ultra long nozzle and nozzle-heater，extruding with low temperature and low speed，changing watercooling mode into air-cooling mode，and increasing the number of holes in the nozzle.With the modified process，the quality of the extruded rubber strip and sealing gasket were improved，and the extrusion efficiency increased.
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