超高分子量聚乙烯复合材料的消声性能研究
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摘要
超高分子量聚乙烯(PE-UHMW)具有很好的抗冲击性、消声减振等性能,通过在PE-UHMW中加入玻璃纤维(GF)、聚四氟乙烯(PTFE)纤维和石墨烯(Gr),利用模压法制得PE-UHMW复合板。通过测试并分析其吸声系数和隔声量,提出了复合材料板分子链缠结模型,并结合模型分析了复合材料的消声性能。结果表明,在40～260Hz和1 590～2 880Hz波段,GF对PE-UHMW的消声性能有促进作用。而Gr加入后,则仅在1 790～3 000Hz波段对PE-UHMW的消声性能有促进作用,其他波段均未增加,与其自身缺陷有关。由于粘接较差,PTFE纤维并未达到预期效果,只是在大于2 160Hz后才对消声性能产生正面影响。总之,三种填料加入后都会影响PE-UHMW分子链的缠结,并且对分子链的耗能方式产生一定的影响,从而影响PE-UHMW的消声性能。
Ultra-high molecular weight polyethylene(PE-UHMW) has lots of good properties such as impact resistance,sound attenuation and vibration reduction. PE-UHMW composite was made by adding glass ?ber,polytetra?uoroethylene ?ber and graphene to PE-UHMW and PE-UHMW composite plate was prepared by molding. By testing and analyzing the sound absorption coef-?cient and sound insulation,a molecular chain entanglement model of composite plate was proposed. Combined with the model,the acoustic performance of the composite was analyzed. The results show that glass ?ber can promote the silencing performance of PEUHMW in 40-260 Hz and 1 590-2 880 Hz. However,when graphene is added,the acoustic performance of PE-UHMW is promoted in 1 790-3 000 Hz,while the other frequency are not increased,which is related to its own defects. Because of the bad adhesion,polytetra?uoroethylene ?ber does not achieve the expected effect. But after 2 160 Hz,it can promote the acoustic performance of PE-UHMW. In a word,the three types of ?ller will affect the entanglement of the molecular chain of PE-UHMW,and in?uence the energy consumption of the molecular chain in a certain way,which will affect the acoustic performance of PE-UHMW.
Ultra-high molecular weight polyethylene(PE-UHMW) has lots of good properties such as impact resistance,sound attenuation and vibration reduction. PE-UHMW composite was made by adding glass ?ber,polytetra?uoroethylene ?ber and graphene to PE-UHMW and PE-UHMW composite plate was prepared by molding. By testing and analyzing the sound absorption coef-?cient and sound insulation,a molecular chain entanglement model of composite plate was proposed. Combined with the model,the acoustic performance of the composite was analyzed. The results show that glass ?ber can promote the silencing performance of PEUHMW in 40-260 Hz and 1 590-2 880 Hz. However,when graphene is added,the acoustic performance of PE-UHMW is promoted in 1 790-3 000 Hz,while the other frequency are not increased,which is related to its own defects. Because of the bad adhesion,polytetra?uoroethylene ?ber does not achieve the expected effect. But after 2 160 Hz,it can promote the acoustic performance of PE-UHMW. In a word,the three types of ?ller will affect the entanglement of the molecular chain of PE-UHMW,and in?uence the energy consumption of the molecular chain in a certain way,which will affect the acoustic performance of PE-UHMW.
引文
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[2]Chen Yang,Nie Xin,Zou Huawei,et al.Structure and tensile properties change of LDPE/UHMWPE blends via solid state shear milling[J].Journal of Applied Polymer Science.2013,130(4):2 487-2 493.
[3]Yousef S,Visco A,Galtieri G,et al.Wear behaviour of UHMWPE reinforced by carbon nanofiller and paraffin oil for joint replacement[J].Materials Science&Engineering C Materials for Biological Applications,2017,(2017):234-244.
[4]苏荣锦,黄安民.超高分子量聚乙烯的研究现状[J].广州化工,2010,38(5):59-61.Su RongJin,Huang Anmin.Research status of ultra high molecular weight polyethylene[J].GuangZhou Chemical Industry,2010,38(5):59-61.
[5]He Shuai,He Hui,Li Yingchun,et al.Effects of maleic anhydride grafted polyethylene on rheological,thermal,and mechanical properties of ultra high molecular weight polyethylene/poly(ethylene glycol)blends[J].Journal of Applied Polymer Science,2015,132(43):42 701.
[6]Ronca S,Forte G,Ailianou A,et al.Direct route to colloidal UHMWPE by including LLDPE in solution during homogeneous polymerization of ethylene[J].ACS Macro Letters,2012,1(9):1 116-1 120.
[7]Hu Dean,Zhang Youmin,Shen Zhiwei,et al.Investigation on the ballistic behavior of mosaic SiC/UHMWPE composite armor systems[J].2017,43(13):10 368-10 376.
[8]杨萌,赵宁,徐坚.超高分子量聚乙烯功能复合材料及其应用[J].高分子通报,2018(8):25-32.Yang Meng,Zhao Ning,Xu Jian.Ultra-high molecular weight polyethylene-based functional composites and applications[J].Polymer Bulletin,2018(8):25-32.
[9]Li Wei,Guan Chao,Xu Jie,et al.Disentangled UHMWPE/POSSnanocomposites prepared by ethylene in situ,polymerization[J].Polymer,2014,55(7):1 792-1 798.
[10]Langston T.An analytical model for the ballistic performance of ultra-high molecular weight polyethylene composites[J].Composite Structures,2017,179(11):245-257.
[11]张炜,冯玲英,李志,等.PE-UHMW/SiO2复合材料的微观性能研究[J].工程塑料应用,2013,41(10):30-33.Zhang Wei,Feng Lingying,Li Zhi,et al.Study on microproperties of PE-UHMW/SiO2 composite[J].Engineering Plasics Application,2013,41(10):30-33.
[12]Fazal A,Fancey K S.UHMWPE fibre-based composites:Prestressinduced enhancement of impact properties[J].Composites Part B,2014,66(4):1-6.
[13]向海帆,赵宁,徐坚.聚合物纤维类吸声材料研究进展[J].高分子通报,2011(5):1-9.Xiang Haifan,Zhao Ning,Xu Jian.Recent progress in sound absorption materials based on polymer fibers[J].Polymer Bulletin,2011(5):1-9.
[14]Chen Yuanfeng,Qi Yuanyuan,Tai Zhixin,et al.Preparation,mechanical properties and biocompatibility of graphene oxide/ultrahigh molecular weight polyethylene composites[J].European Polymer Journal,2012,48(6):1 026-1 033.