文章摘要
Formulation Optimization of Covering Compound of PVG Flame-retardant Integral Core Conveyor Belt by Molding Method
Received:September 28, 2018  Revised:September 28, 2018
DOI：10.12136/j.issn.1000-890X.2019.01.0036
Key Words: covering compound；PVG flame-retardant integral core conveyor belt；molding method；NBR；PVC；formulation optimization
Author NameAffiliationE-mail
YANG Huamin Xi’an Heavy Equipment Weinan Rubber Production Co.，Ltd 786641010@qq.com 
WANG Junlong* Xi’an Heavy Equipment Weinan Rubber Production Co.，Ltd wjunlong@sian.cn 
JIANG Li Xi’an Heavy Equipment Weinan Rubber Production Co.，Ltd  
HE Yongjun Xi’an University of Science and Technology  
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Abstract:
      The formulation of the covering compound of PVG flame-retardant integral core conveyor belt which was made of PVC flame-retardant integral core conveyor belt with a covering compound by molding method was optimized. The optimum formulation of the covering compound was as follows：NBR　100，PVC（paste）　30，carbon black N234　40，stearic acid　2，zinc oxide　5，chlorinated paraffin/antimony trioxide/zinc borate/ammonium polyphosphate/aluminium hydroxide　20/8/15/15/15，dispersant R50　5，plasticizer　20，antioxidant　2，and sulfur/accelerator TBBS　1.7/1.8. The adhesion between the covering compound and the core，the physical properties，flame-retardant performance and drum friction test results of the optimized covering compound met the requirements of MT 914—2008.
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