文章摘要
Study on Preparation and Properties of Sound Insulation and Damping NBR/CR Composites
Received:June 02, 2020  Revised:June 24, 2020
DOI：10.12136/j.issn.1000-890X.2021.12.0904
Key Words: NBR；CR；composite；damping；sound insulation；loss factor；effective damping temperature range；average sound insulation loss
Author NameAffiliationE-mail
ZHAO Yujing Qingdao University of Science and Technology 760056724@qq.com 
JIANG xiaoyan* Qingdao Aotai Traffic Equipment Co.，Ltd  
ZHU Weihao 1Qingdao University of Science and Technology  
CHEN Mingtong Qingdao University of Science and Technology  
ZENG Xiankui Qingdao University of Science and Technology  
WANG Dong Qingdao Aotai Traffic Equipment Co.，Ltd.  
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Abstract:
      Nitrile rubber（NBR）/chloroprene rubber（CR） composites with sound insulation and damping were prepared with NBR/CR as the main material，and adding mica powder，hollow glass beads（HGB） and montmorillonite（MMT）.The effects of NBR/CR blend ratio，mica powder dosage，HGB dosage and MMT dosage on the damping and sound insulation properties of NBR/CR composites were studied by orthogonal test，and the optimal formula combination of the composites was determined.The results showed that，for the maximum loss factor（tanδmax） of NBR/CR composites，the primary and secondary order of their influence factors was NBR/CR blend ratio，HGB dosage，mica powder dosage and MMT dosage.For the effective damping temperature range of NBR/CR composites，the primary and secondary order of their influence factors was NBR/CR blend ratio，mica powder dosage，MMT dosage and HGB dosage.For the average sound insulation loss of NBR/CR composites，the primary and secondary order of their influence factors was HGB dosage，mica powder dosage，MMT dosage and NBR/CR blending ratio.The optimum formula combination of NBR/CR composites was as follows：NBR/CR blend ratio　70/30，mica powder dosage　10 phr，HGB dosage　12 phr，and MMT dosage　10 phr.
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