CAJ | 학술논문

运用一种结构中含有端炔的硅烷偶联剂(AG-2)，提高透波用石英纤维(QF)/含硅芳炔树脂(PSA)复合材料的界面粘接，运用 TGA、XPS、SEM、AFM、表面能分析等表征了偶联剂与纤维、树脂的相互作用。凝胶时间和 TGA 分析表明 AG-2加入对PSA的高温性能影响不大；TGA、XPS、表面能匹配分析等推断 AG-2的作用机理为偶联剂分别与纤维表面、树脂基体发生化学偶联，同时增大了 QF 的表面能，改善了与 PSA 的表面张力匹配；偶联剂处理后QF/PSA复合材料界面粘结强度增加，复合材料的力学性能提高，层间剪切强度(ILSS)和弯曲强度分别较未处理前提高了34.77%和38.30%。
운용일충결구중함유단결적규완우련제(AG-2)，제고투파용석영섬유(QF)/함규방결수지(PSA)복합재료적계면점접，운용 TGA、XPS、SEM、AFM、표면능분석등표정료우련제여섬유、수지적상호작용。응효시간화 TGA 분석표명 AG-2가입대PSA적고온성능영향불대；TGA、XPS、표면능필배분석등추단 AG-2적작용궤리위우련제분별여섬유표면、수지기체발생화학우련，동시증대료 QF 적표면능，개선료여 PSA 적표면장력필배；우련제처리후QF/PSA복합재료계면점결강도증가，복합재료적역학성능제고，층간전절강도(ILSS)화만곡강도분별교미처리전제고료34.77%화38.30%。
A novel silane coupling agent (AG-2 )containing terminalalkyne groups was synthesized and intro-duced to promote the interfacial bonding performance of QF/PSA composites.The interactions among the cou-pling agent,resin and matrix were characterized.FT-IR and 1 H NMR spectra indicated the well preparation of AG-2.Gelation time and TGA analysis showed that heat-resistant performance of PSA was hardly influenced by AG-2.TGA,XPS,SEM and surface energy analyses inferred effective chemical bonds formed between fiber surface and AG-2 as well as the resin and AG-2.The surface energy of QF increased which made interface matched.Significant enhancement of ILSS and flexural strength of modified composite was achieved and promo-ted by 34.77% and 38.30% compared to those unmodified.