碳化软木橡树皮纤维结合硅溶胶制备的新吸声材料及性能

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中图分类号：TQ353 文献标志码：A文章编号：1001-5922（2026）03-0684-04

New sound-absorbing material prepared by combining carbonized cork oak bark fiber with silica sol and its performance

LI Fengze，XU Binrong，CHEN Hongyu，ZHAO Minghao，GE Shuai （Xi'anEurasia University，Xi'an 710O65，China）

Abstract：Taking plant fibers and silica sol as the main raw materials，anew building sound-absorbing material combining carbonized cork oak bark fiber with silica sol was proposed.In the experiment，the mix ratio ofthe sound-absorbing material ofcarbonizedcorkoak bark fiber combined with silicasol was first optimized，andthen the performance of the sound-absorbing material was analyzed.The results show that when the content of carbonized cork oak bark fiber is 4% ，silica sol 10% ，pure acrylic emulsion 6% and sodium dodecylbenzene sulfonate 1.5% ，the sound absorption coefficient of the prepared sound-absorbing material at a frequency of 5 OOo Hz reaches 0.83%. Its initial decomposition temperature and final decomposition temperature are 242.3°C and 497.3 C respectively，the weight loss rate is 51.4% ，the density is 21.72kg/m3 ，the elastic modulus is 114.3kPa and the yield strength is 7.9kPa .The material exhibits excellnt sound absorption performance，thermal stability and mechanical properties， which lays a foundation for the subsequent development and application of plant fiber-based porous sound-absorbing materials.

Key words ：fibers;sound absorbing materials;thermal stability;mechanical properties;sound absorption performance

吸声材料凭借其独特的性能优势，在多个领域都有着广阔的应用空间。（剩余5633字）