%0 Journal Article
%T ULTRASONIC BEHAVIOUR STUDIES ON METHYL METHACRYLATE COPOLYMERS<br>甲基丙烯酸甲酯共聚物的超产特性研究
%A HU Jian-kai
%A ZHOU Jing
%A XU Wen-ying
%A <br>胡建恺
%A 周静
%A 徐文英
%J 高分子学报
%D 1992
%I 
%X Ultrasonic attenuation and velocities have been measured in three kinds of copolymers: Methyl methacrylate-Butyl methacrylate (MMA-BMA), Methyl methacrylate-Methyl acrylic acid (MMA-MAA) containing different kinds of crosslinkers and Styrene-Methyl acrylic acid (ST-MAA) containing crosslinker EGD and BA respectively.Experimental results indicate that ultraconic attenuation increases and velocity decreases in MMA-BMA as increasing BMA content. Adding crosslinkers EGD or BA in MMA-MAA and in ST-MAA, ultrasonic attenuation inbcreases,velocity decreases evidently. The glass transition temperature Tg in MMA-BMA shifts towards lower temperature as BMA content. increasing.
%K 超声衰减
%K 声速
%K 共聚物
%K 交联
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=15971983683C7643EE80F1CE621DEB60&aid=7A6CF0FB45E4A6C36727B47529D3DC79&yid=F53A2717BDB04D52&iid=94C357A881DFC066&sid=CEFF71AEB051114C&eid=CF0706A3E35031F6&journal_id=1000-3304&journal_name=高分子学报&referenced_num=0&reference_num=0