文章摘要
Preparation and Properties of Natural Rubber Latex Film and Kapok Fiber/Polyester Fiber Nonwoven Fabric Sound Absorbing Compositesing Materials
Received:March 01, 2023  Revised:March 01, 2023
DOI：10.12136/j.issn.1000-890X.2024.11.0803
Key Words: natural rubber latex film；kapok fiber；polyester fiber；nonwoven fabric；composite；sound absorption property；mechanical property
Author NameAffiliationE-mail
ZHU Yanjin Yunnan Natural Rubber Industry Group Co., Ltd zhuyanjinok@126.com 
TIAN Fangrui Wuhan Textile University, College of Textile Science and Engineering  
Ruan Linguang Yunnan Natural Rubber Industry Group Co., Ltd  
XIAO Yuxiu Jiangxi Guangyuan Chemical Co., Ltd  
XU Yongyuan Natural Rubber and Coffee Product Quality Supervision and Inspection Station of Yunnan Province  
Hu Min Wuhan Textile University, College of Textile Science and Engineering  
LI Min Yunnan Natural Rubber Industry Group Co., Ltd  
DENG Qiuyang Yunnan Natural Rubber Industry Group Co., Ltd  
ZHANG Ronghua* Yunnan Natural Rubber Industry Group Co., Ltd zhangrh@ynyunken.com 
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Abstract:
      Natural rubber latex film had unique viscoelastic and damping properties，while kapok fiber had a unique structure with large hollow spaces，both of them could be used as sound absorbing material substrates.Kapok fiber was mixed with hollow polyester fiber，and the nonwoven fabric was made by acupuncture reinforcement technology，then directly compounding natural rubber latex film，the natural rubber latex film and kapok fiber/polyester fiber nonwoven fabric sound absorbing composites were prepared.The effects of the number of natural rubber latex film layers，the surface density of the composites，kapok fiber/polyester fiber mass ratio and the pore size of the composites on the sound absorption properties of the composites were studied，and the mechanical properties of the composites were analyzed.The results showed that，the comprehensive performance of the natural rubber latex film and kapok fiber/polyester fiber nonwoven fabric sound absorbing composites was the best and the maximum sound absorption coefficient reach 0.8 under the conditions of 2 layers of natural rubber latex film，1 215.72 g·m-2 of surface density of the composites，6/4 of kapok fiber/polyester fiber mass ratio，and 109.5 μm of pore size of the composites.The compounding of natural rubber latex film could make up for the lack of the sound absorption effect of kapok fiber/polyester fiber nonwoven fabric in low frequency area，effectively broaden the sound absorption bands of the composites，and improve their application fields.
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