信阳师范学院学报(自然科学版)
信暘師範學院學報(自然科學版)
신양사범학원학보(자연과학판)
JOURNAL OF XINYANG NORMAL UNIVERSITY(NATURAL SCIENCE EDITION)
2013年
4期
551-554
,共4页
柔性不饱和聚酯树脂%甲基丙烯酸甲酯%粉煤灰%固化%动力学
柔性不飽和聚酯樹脂%甲基丙烯痠甲酯%粉煤灰%固化%動力學
유성불포화취지수지%갑기병희산갑지%분매회%고화%동역학
flexible unsaturated polyester resin%methyl methacrylate%coal fly ash%cure%kinetics
用差示扫描量热法( DSC)研究了自制柔性不饱和聚酯/甲基丙烯酸甲酯树脂( FUP/MMA)和柔性不饱和聚酯/甲基丙烯酸甲酯/T-60改性粉煤灰( FUP/MMA/CFA)复合体系的固化过程.利用Kissinger法、Oza-wa法求出FUP/MMA和FUP/MMA/CFA两体系固化反应的表观活化能分别为81.578 kJ· mol-1和77.231 kJ · mol-1;用ASTM E698-79标准方法求得两体系固化反应的指前因子lnA分别为20.40 s-1和19.15 s-1;结合Crane方程得到两体系的反应级数n分别为0.9377和0.9359;最终确定了固化反应的动力学方程.用T-β外推法确定了凝胶温度、固化温度和后固化温度等固化工艺温度.
用差示掃描量熱法( DSC)研究瞭自製柔性不飽和聚酯/甲基丙烯痠甲酯樹脂( FUP/MMA)和柔性不飽和聚酯/甲基丙烯痠甲酯/T-60改性粉煤灰( FUP/MMA/CFA)複閤體繫的固化過程.利用Kissinger法、Oza-wa法求齣FUP/MMA和FUP/MMA/CFA兩體繫固化反應的錶觀活化能分彆為81.578 kJ· mol-1和77.231 kJ · mol-1;用ASTM E698-79標準方法求得兩體繫固化反應的指前因子lnA分彆為20.40 s-1和19.15 s-1;結閤Crane方程得到兩體繫的反應級數n分彆為0.9377和0.9359;最終確定瞭固化反應的動力學方程.用T-β外推法確定瞭凝膠溫度、固化溫度和後固化溫度等固化工藝溫度.
용차시소묘량열법( DSC)연구료자제유성불포화취지/갑기병희산갑지수지( FUP/MMA)화유성불포화취지/갑기병희산갑지/T-60개성분매회( FUP/MMA/CFA)복합체계적고화과정.이용Kissinger법、Oza-wa법구출FUP/MMA화FUP/MMA/CFA량체계고화반응적표관활화능분별위81.578 kJ· mol-1화77.231 kJ · mol-1;용ASTM E698-79표준방법구득량체계고화반응적지전인자lnA분별위20.40 s-1화19.15 s-1;결합Crane방정득도량체계적반응급수n분별위0.9377화0.9359;최종학정료고화반응적동역학방정.용T-β외추법학정료응효온도、고화온도화후고화온도등고화공예온도.
The curing kinetics of flexible unsaturated polyester /methyl methacrylate resin ( FUP/MMA) and flexi-ble unsaturated polyester resin/coal fly ash (FUP/MMA/CFA) system was studied with non-isothermal DSC.The ap-parent activation energy (Ea), pre-exponential factor (A) and reaction order (n) were obtained, where Ea =81.578 kJ· mol-1 , lnA =20.40 s-1 and n =0.937 7 for FUP/MMA system and Ea=77.231 kJ· mol -1 , lnA =19.15 s-1 and n =0.935 9 for FUP/MMA/CFA system with Kissinger method, Ozawa method, ASTM E698-79 method and Crane equation .Based on these parameters , kinetic equations for the curing of FUP/MMA and FUP/MMA/CFA sys-tems were established .Gelling temperature , curing temperature and treating temperature for each system were deter-mined by extrapolating T-β.