新型耐高温体膨型高分子材料研发及性能评价

Development and Performance Evaluation of a Novel High Temperature Resistant Expansive Polymer Material

采用原位交联一步法,以含酰胺键的H-2单体和含羟基官能团的H-1大分子为主要原料,合成三维方向全互穿的耐高温高分子材料HTP。红外光谱数据表明,在HTP中同时存在H-1交联键的特征官能团和交联的H-2特征官能团,H-1交联反应和H-2聚合交联反应可以同时发生。电子显微镜照片证实了HTP的全互穿交联结构,交联反应后,HTP结构发生明显变化,纤维尺寸明显缩小。该材料抗拉伸,分散稳定性好,遇水体积膨胀,常温1.5 h内达到最大体膨倍数1.69。在90、120、140℃下用地层水浸泡130 d后,HTP体积缩小率分别为1.57%、3.24%和6.82%。

High temperature-resistant polymer(HTP)was synthesized by in-situ cross-linking of interpenetrating reaction using H-2 monomer containing amide bond and H-1 molecule containing hydroxyl as raw materials. IR spectra result showed that there were characteristic functional groups of H-1 and H-2 cross bond at the same time,that was to say that H-1 cross-linking reaction and H-2 polymerization could simultaneously take place. The interpenetrating cross-linking structure,extension properties at room temperature and long-term heat resistance properties of the material were tested. The experiment results showed that in the whole range of observations,HTP material cross-links and interpenetrates uniformly. The SEM pictures confirmed the interpenetration structure of HTP material. After cross-linking and interpenetration,the scale of HTP structure became smaller than before. This material had tensile resistance,dispersion stability in water,volume expansion,and could reach the maximum swelling ratio of1.69 within 1.5 hrs at room temperature. At 90℃,120℃ and 140℃,after soaking 130 days in formation water,HTP volume reduction rate was 1.57%,3.24% and 6.82%,respectively.