化工学报
化工學報
화공학보
CIESC Jorunal
2015年
11期
4446-4451
,共6页
孔明华%伍联营%徐显朕%胡仰栋
孔明華%伍聯營%徐顯朕%鬍仰棟
공명화%오련영%서현짐%호앙동
动力学模型%聚合%酯化%四溴邻苯二甲酸酐%马来酸酐
動力學模型%聚閤%酯化%四溴鄰苯二甲痠酐%馬來痠酐
동역학모형%취합%지화%사추린분이갑산항%마래산항
kinetics modeling%polymerization%esterification%tetrabromo phthalic anhydride%maleic anhydride
通过熔融缩聚反应对马来酸酐/乙二醇(MA/EG)和四溴邻苯二甲酸酐/乙二醇(TBPA/EG)两个聚酯化反应的动力学进行研究。考察了自催化条件下反应温度、原料配比对聚酯化反应速率的影响。在陈寿安模型的基础上,对反应级数的不同组合进行了比较研究。结果表明:1-1模型和实验结果吻合良好,且kh[H2O]为正值;温度越高,醇酸配比越大,则聚合反应程度越大。
通過鎔融縮聚反應對馬來痠酐/乙二醇(MA/EG)和四溴鄰苯二甲痠酐/乙二醇(TBPA/EG)兩箇聚酯化反應的動力學進行研究。攷察瞭自催化條件下反應溫度、原料配比對聚酯化反應速率的影響。在陳壽安模型的基礎上,對反應級數的不同組閤進行瞭比較研究。結果錶明:1-1模型和實驗結果吻閤良好,且kh[H2O]為正值;溫度越高,醇痠配比越大,則聚閤反應程度越大。
통과용융축취반응대마래산항/을이순(MA/EG)화사추린분이갑산항/을이순(TBPA/EG)량개취지화반응적동역학진행연구。고찰료자최화조건하반응온도、원료배비대취지화반응속솔적영향。재진수안모형적기출상,대반응급수적불동조합진행료비교연구。결과표명:1-1모형화실험결과문합량호,차kh[H2O]위정치;온도월고,순산배비월대,칙취합반응정도월대。
Polyesterifications of ethylene glycol (EG) with maleic anhydride (MA) and tetrabromo phthalic anhydride (TBPA) without foreign acid were carried out under constant reaction temperatures of 162—192℃(rather than at the constant oil-bath temperature) and at different molar ratios of diol to diacid of 1.2—1.8 (MA/EG). The different combinations of the reaction order on the basis of Show-an Chen model were discussed. 1-1 model can describe experimental results very well, andkh[H2O] was greater than zero. The reaction rate constants for both systems were calculated. Besides, It was found that the final COOH conversion was increased with increasing reaction temperatures and molar ratios of diol to diacid.