【作者】 乔志； 阳珠生； 王晓露； 赵宁； 徐坚；

【Author】 Zhi Qiao;Zhusheng Yang;Xiaolu Wang;Ning Zhao;Jian Xu;Beijing National Laboratory for Molecular Science, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences;

【机构】 中国科学院化学研究所高分子物理与化学实验室；

【摘要】 在交联高分子聚合物中引入动态键构筑动态聚合物网络,可以实现热固性材料的热塑性加工。相对的,如果将动态键引入到聚合物主链则可以设计并合成出分子量可逆变化的聚合物。在不影响主链性能的前提下,还可以通过可逆键将增塑剂引入到聚合物主链上。在加工过程中,动态键断裂,增塑剂生成,从而达到降低材料加工所需温度的目的。在材料成型后,掉落的增塑剂可以通过可逆键再次连接到聚合物链上。此外,如果将增塑剂分子替换为对聚合物具有强相互作用参数的溶剂分子,还可以在加工过程中实现固-液转变。更多还原

【Abstract】 Thermoplastic processing of thermosetting materials can be achieved by the dynamic crosslinked network. On the other hand, if a dynamic bond is introduced into the polymer backbone, a polymer with a reversible change in molecular weight can be designed and synthesized. The plasticizer can also be grafted to the polymer backbone by reversible bonds without affecting the performance of the backbone. During the processing, the dynamic bond breaks and the plasticizer is formed, thereby achieving the purpose of reducing the temperature required for material processing. After processing, plasticizer molecules can be reattached to the polymer chain via dynamic reversible bonds. Furthermore, if the plasticizer molecule is replaced by a solvent molecule which has a strong interaction parameter with the polymer, a solid-liquid transition can also be achieved during processing.更多还原