摘要
以4,4-二氨基二苯醚(ODA)作为二胺单体,3,3’,4,4’-联苯四酸二酐(BPDA)作为二酐单体,Ti O_(2)作为改性填料,N-甲基砒咯烷酮(NMP)为溶剂,通过常规的两步法经热亚胺化合成了Ti O_(2)改性的聚酰亚胺结构胶。采用傅里叶变换红外光谱表征了聚合物的结构;热重(TG)表明,所合成的聚酰亚胺具有良好的热稳定性,在N_(2)气氛中起始降解温度接近492℃,添加Ti O_(2)的胶黏剂质量保持率大于50%。单搭接拉伸剪切测试结果表明,所得聚酰亚胺结构胶对不锈钢片的室温粘接强度(LSS)高达15 MPa,250℃下的拉伸剪切强度达10.35 MPa。
The TiO_2-modified polyimide structural adhesive was synthesized by thermal imide using 4,4-diaminodiphenyl ether (ODA) as diamine monomer,3,3',4,4'-biphenyl tetrahydride (BPDA) as dianhydride monomer,TiO_(2) as modified filler and n-methylpyrrolidone (NMP) as solvent by conventional two-step process.The structure of the polymer was characterized by Fourier transform infrared spectroscopy.Thermogravimetric (TG)showed that the synthesized polyimide had good thermal stability.The initial degradation temperature was close to 492℃ in N_(2) atmosphere,and the quality retention rate of the adhesive with TiO_(2) was greater than 50%.The results of single lap tensile shear test show that the obtained polyimide structural adhesive has a high LSS of 15 MPa at room temperature and 10.35 MPa at 250℃.
作者
王栋栋
曲延涛
李伶通
褚然然
张强
WANG Dongdong;QU Yantao;LI Lingtong;CHU Ranran;ZHANG Qiang
出处
《化工设计通讯》
CAS
2024年第4期126-128,共3页
Chemical Engineering Design Communications
作者简介
王栋栋(1997-),男,山东德州人,硕士研究生,研究方向:高分子合成。
