The invention comprises a networked polymer comprising the formula:
1
wherein n≧1; wherein n is an average value obtained by averaging all repeating units of the networked polymer; wherein m≧1; wherein Y is a divalent group containing one or more acetylenic groups, one or more ethenyl crosslinks, or both;
wherein z is the crosslink density; wherein Ar
1
and Ar
2
are independently selected aromatic groups; and wherein each R is independently selected from the group consisting of alkyl, aryl, alkylaryl, haloalkyl, haloaryl, and combinations thereof. The invention also includes prepolymers and precursors needed to make the networked polymer and processes for making all of the above. The invention also includes a ceramic composition made by pyrolysis of the networked polymer.
本发明涉及一种网络聚合物,其
化学式为:1其中n≥1;其中n是通过对网络聚合物的所有重复单元进行平均获得的平均值;其中m≥1;其中Y是含有一个或多个
乙炔基,一个或多个
乙烯基交联或两者的二价基团;其中z是交联密度;其中Ar1和Ar2是独立选择的芳香基团;每个R独立选择自烷基,芳基,烷基芳基,卤代烷基,卤代芳基及其组合的群。本发明还包括制备网络聚合物所需的预聚物和前体以及制备上述所有物的过程。本发明还包括通过网络聚合物的热解制备的陶瓷组合物。