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 Name | Affiliation | E-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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