四孔中空涤纶短纤增强氢化羧基丁腈橡胶复合材料的吸声性能  

Sound absorption performance of four-hole hollow polyester fiber reinforced hydrogenated carboxyl nitrile rubber composites

作　　者：洪杰[1,2] 姜生 晏雄[1] 

机构地区：[1]东华大学纺织学院纺织面料技术教育部重点实验室,上海201620 [2]江苏工程职业技术学院纺染工程学院,江苏南通226007

出　　处：《合成橡胶工业》2015年第6期476-479,共4页China Synthetic Rubber Industry

基　　金：中国纺织工业联合会科技指导性项目(2013115);江苏省南通市科技局应用研究资助项目(BK 2013064)

摘　　要：选取氢化羧基丁腈橡胶（HXNBR）为基体,与中空度为22.9%的四孔中空涤纶短纤（FHHPF）共混制得HXNBR/FHHPF复合材料,研究了复合材料的吸声性能和拉伸性能。结果表明,随着FHHPF用量的增加,HXNBR/FHHPF复合材料在相应频率点吸声系数提高的同时拓宽了有效频宽,当HXNBR/FHHPF（质量比）为60/40,材料厚度为1 mm时,有效频宽为1 730~2 500 Hz,在2 500 Hz处的吸声系数高达0.651;增加HXNBR/FHHPF复合材料的厚度可改善材料的吸声性能,当HXNBR/FHHPF（质量比）为70/30,将材料厚度由1 mm增至2 mm,在2 000,2 500 Hz处的吸声系数分别提升了30.3%,32.5%,同时也拓宽了材料的有效频宽;随着FHHPF用量的增加,HXNBR/FHHPF复合材料的拉伸强度逐渐提高,扯断伸长率逐渐降低。The hydrogenated carboxyl nitrile rubber （ HXNBR）/four-hole hollow polyester fibers （FHHPF） com- posites were prepared with HXNBR as the substrate and FH- HPF with 22.9% hollowness as reinforcing material. The sound absorption performance and tensile properties were studied. The results showed that the sound absorption coefficient of the prepared composites increased with increasing FHHPF, meanwhile the effective frequency bandwidth widened at the corresponding frequency point. The sound absorption coefficient of the composite with 1 mm thickness was 0. 651 at the frequency of 2 500 Hz when mass fraction of FHHPF was 40% , and the effective frequency bandwidth was 1 730 -2 500 Hz. The sound absorption performance im- proved with increasing the composite thickness. When the HXNBR/FHHPF （mass ratio） was 70/30 and the thickness increased from 1 mm to 2 ram, the sound absorption coeffi- cient at the frequency of 2 000 Hz, 2 500 Hz increased by 30. 3% and 32.5% respectively, at the same time, the effective frequency bandwidth widened. The tensile strength increased and the elongation at break decreased gradually with the increase of FHHPF.

关 键 词：四孔中空涤纶 氢化羧基丁腈橡胶 增强 复合材料 吸声性能 拉伸性能 

分 类 号：TQ333.7[化学工程—橡胶工业] TB33[一般工业技术—材料科学与工程]