安徽大学学报（自然科学版）2025，Vol.49Issue(1)：70-76,7.DOI:10.3969/j.issn.1000-2162.2025.01.009
室温自修复聚硅氧烷弹性体的无溶剂制备及性能研究
Solvent-free preparation and properties of room temperature self-healing polysiloxane elastomers
摘要
Abstract
In this study,polysiloxane elastomers containing dynamic imine bonds were prepared using solvent-free hot-pressing method with polydimethylsiloxane-amine(PDMS-NH2)as the raw material and 1,3,5-tris(4-formylphenyl)benzene(TPB)as the crosslinker.The polysiloxane elastomers were characterized by Fourier transform infrared spectroscopy and Raman spectroscopy.The mechanical properties,reprocessing properties and self-healing properties of the polysiloxane elastomers were investigated,respectively.The results showed that the polysiloxane elastomers with good mechanical properties and room temperature self-healing ability were obtained by modulating the degree of cross-linking and using TPB with a rigid polyphenylene ring structure as the cross-linking agent.When the molar ratio of amino and aldehyde groups was 1:1,the tensile strength of polysiloxane elastomers was 68 kPa,the elongation at break was 179％.The room-temperature self-healing efficiency of cut elastomers for 6 h was 82.36％,the mechanical properties of the sheared elastomers at room-temperature remodeling were maintained at more than 80％of that of the original samples,which were elevated to 98.53％at 80℃.关键词
无溶剂/自修复/交联/重塑Key words
solvent-free/self-healing/cross-linking/remodeling分类
化学化工引用本文复制引用
宋士康,方子豪,曹明,夏茹,陈鹏,钱家盛..室温自修复聚硅氧烷弹性体的无溶剂制备及性能研究[J].安徽大学学报（自然科学版）,2025,49(1):70-76,7.基金项目
国家自然科学基金面上项目(52103154) （52103154）
