CAJ | 학술논문

以4,4′-二氨基二苯砜(DDS)为固化剂,用端环氧基丁腈橡胶(ETBN)增韧4,4′-二氨基二苯甲烷环氧树脂(TGDDM),通过差示扫描量热法和傅里叶变换红外光谱法分析了 ETBN 增韧 TGDDM的固化行为,考察了 ETBN 含量对增韧 TGDDM 力学性能和吸水率的影响,表征了 ETBN 增韧 TGDDM的微观形貌。结果表明,随着 ETBN 含量的增加,增韧 TGDDM 的固化反应放热量逐渐下降,固化放热峰温度则逐渐升高,ETBN 与 TGDDM 在固化过程中反应完全；随着 ETBN 含量的增加,增韧 TGDDM 的弯曲强度和弯曲弹性模量都逐渐下降,冲击强度和断裂韧性则先升高后降低,当 ETBN 质量分数为6．7%时达到最大值,分别为15．9 kJ/ m2和0．74 MPa·m1/2；未增韧 TGDDM 表面平滑,裂纹几乎呈直线状,表现为脆性断裂；加入的 ETBN 均匀分散在 TGDDM 中,随着 ETBN 含量的增加,ETBN 粒子尺寸增大；ETBN增韧 TGDDM 具有良好的耐水性。
이4,4′-이안기이분풍(DDS)위고화제,용단배양기정정상효(ETBN)증인4,4′-이안기이분갑완배양수지(TGDDM),통과차시소묘량열법화부리협변환홍외광보법분석료 ETBN 증인 TGDDM적고화행위,고찰료 ETBN 함량대증인 TGDDM 역학성능화흡수솔적영향,표정료 ETBN 증인 TGDDM적미관형모。결과표명,수착 ETBN 함량적증가,증인 TGDDM 적고화반응방열량축점하강,고화방열봉온도칙축점승고,ETBN 여 TGDDM 재고화과정중반응완전；수착 ETBN 함량적증가,증인 TGDDM 적만곡강도화만곡탄성모량도축점하강,충격강도화단렬인성칙선승고후강저,당 ETBN 질량분수위6．7%시체도최대치,분별위15．9 kJ/ m2화0．74 MPa·m1/2；미증인 TGDDM 표면평활,렬문궤호정직선상,표현위취성단렬；가입적 ETBN 균균분산재 TGDDM 중,수착 ETBN 함량적증가,ETBN 입자척촌증대；ETBN증인 TGDDM 구유량호적내수성。
The epoxy resin, 4,4′-tetraglycidyldi-aminodiphenyl methane ( TGDDM) cured with 4, 4′-diaminodiphenylsulfone was toughened with ep-oxy-terminated butadiene-acrylonitrile rubber (ETBN) . The curing behavior of toughened TGDDM was studied by differential scanning calo-rimetry and Fourier transform infrared spectrosco-py. The effects of ETBN contents on the mechanical properties and water-absorption of toughened TGDDM were investigated. The morphology of the toughened TGDDM was analyzed. The results showed that the enthalpy decreased with increasing ETBN content, whereas the exothermic peak curing temperature increased and ETBN reacted with TGDDM completely. The flexural strength and modulus of the toughened TGDDM both decreased with increasing ETBN content. At mass fraction of ETBN added 6. 7% , the impact strength and frac-ture toughness reached the maximum value, 15. 9 kJ/ m2 and 0. 74 MPa · m1 / 2 , respectively, showing excellent toughening effect. But untough-ened TGDDM had a smooth surface, almost straight linear crack, indicating a brittle fracture. The ETBN particle size increased with the addition of ETBN, and the ETBN particles dispersed in the ep-oxy resin homogeneously. The toughened TGDDM exhibited excellent water-resistance.