摘要
用分段乳液聚合的方式合成的聚苯乙烯／聚内烯酸正丁酯／聚甲基内烯酸乙酯三元互贯网络聚合物（Ｐ８／ＰｎＢＡ／ＰＥＭＡ三元ＩＰＮ）经动态力学谱分析发现：ＩＰＮ的动态力学性能除与单体的加料顺序、单体比例影响聚合物的相容性外，加料的间隔时间对聚合物的相容性有重大影响，①当Ｓ滴加完后再滴加ｎＢＡ的时间（ｔ＿１）＜７０ｍｉｎ，时，动态力学谱有分离的小峰，相容性不够好；②当１４０＞ｔ＿１＞７０ｍｉｎ，时，获得一单峰，三种聚合物达到热力学上的相容；③当１８０＞ｔ＿１＞１４０ｍｉｎ。时，同情况①；④当ｔ＿１＞１８０ｍｉｎ。时，同②。加完ｎＢＡ后，再滴加ＥＭＡ的时间（ｔ＿２）的改变亦有类似情况。此聚合方式及结果均为首次报道。
he PS/PaBA/PEMA IPN (reported in another paper) was synthesized and studiedby the dynamic mechanical spectrum. It is found that the internal friction peak varies reg-ularly with adding-material time , which reveals the interpenetrating difference,i. e.,thedifferenee of compatibility.The damping peak (logarithmic attenuat peak) is a single peak whatever the addinginterval is. Only in a suitable time,a wide platform is found , and the glass transition tem-perature is a range of temperature (>65℃), rather than a singie temperature.It is whatnoise and vibration damping materials need.
出处
《合成化学》
CAS
CSCD
1994年第3期193-196,共4页
Chinese Journal of Synthetic Chemistry
