CAJ | 학술논문

以4，4’-对苯二甲酰二邻苯二甲酸酐（ TDPA）和间苯二胺（ MPD）为单体，以邻苯二甲酸酐（ PA）为封端剂，采用2步法经低温溶液缩聚合成了系列结构新颖的双酮酐型聚酰亚胺（ TDPA-PI）.采用FT-IR、WAXD、DSC和TGA测试对聚合物的结构与性能进行了表征.考查了封端剂用量及亚胺化方法对酮酐型聚酰亚胺性能的影响. FT-IR表明，2种方法均能使TDPA-PAA亚胺化. DSC和TGA分析表明封端剂可在一定程度上提高PI的热性能，化学亚胺化得到的树脂热性能优于热亚胺化. TDPA-PI属热塑性聚合物， Tg为280.6℃（高于Larc-I-TPI的259℃），具有较好的耐热性和耐溶剂性能.
이4，4’-대분이갑선이린분이갑산항（ TDPA）화간분이알（ MPD）위단체，이린분이갑산항（ PA）위봉단제，채용2보법경저온용액축취합성료계렬결구신영적쌍동항형취선아알（ TDPA-PI）.채용FT-IR、WAXD、DSC화TGA측시대취합물적결구여성능진행료표정.고사료봉단제용량급아알화방법대동항형취선아알성능적영향. FT-IR표명，2충방법균능사TDPA-PAA아알화. DSC화TGA분석표명봉단제가재일정정도상제고PI적열성능，화학아알화득도적수지열성능우우열아알화. TDPA-PI속열소성취합물， Tg위280.6℃（고우Larc-I-TPI적259℃），구유교호적내열성화내용제성능.
A novel diketone anhydride poly( ether ketone ether)imides( TDPA-PI)was synthesized via the conven-tional two-step by using 4,4’-terephthaloyldiphthalic anhydride(TDPA)and m-Phenylenediamine(MPD). Polyim-ide acid( TDPA-PAA)was end capped with the excess TDPA or small amount of phthalic anhydride( PA)and took the research of the influence to the thermodynamic property. Research the two polyimide properties which prepared by thermal and chemical imidization. The structure and properties of TDPA-PI was characterized and measured by fourier transform infrared spectroscopy( FT-IR),wide-angle X-ray diffraction( WAXD),differential scanning calori-metric(DSC),thermal gravimetric analysis(TGA)and solubility tests. FT-IR tests show that the two imidization ways both can make TDPA-PAA form an imide ring structure. DSC and TGA show that end-cap can improve Ther-mal properties of TDPA-PI to some extent,and the chemical imidization is superior to thermal imidization. TDPA-PI,a Thermoplastic polyimide which Tg is 280. 6℃(above Larc-I-TPI 259℃)have good thermal and solvent prep-erties. LSS tests show that TDPA-PI has excellent adhesion properties.