利用流變學(xué)等溫測(cè)試方法研究鋁對(duì)聚疊氮縮水甘油醚改性球形藥固化的影響
發(fā)布時(shí)間：2019-03-17 13:32
【摘要】：為了研究鋁在聚疊氮縮水甘油醚(GAP)改性球形藥固化過(guò)程中的作用,利用流變學(xué)等溫測(cè)試方法研究了鋁對(duì)GAP改性球形藥固化動(dòng)力學(xué)的影響,采用熱分析動(dòng)力學(xué)Sestak-Berggren模型對(duì)固化動(dòng)力學(xué)參數(shù)進(jìn)行求解,分別建立了含0%鋁和10%鋁的GAP球形藥的固化動(dòng)力學(xué)模型。結(jié)果表明:GAP球形藥固化過(guò)程中表觀活化能變化不大,在0轉(zhuǎn)化率0.8范圍內(nèi)可認(rèn)為表觀活化能為64.8 k J/mol,加入鋁后反應(yīng)的表觀活化能增大,為85.1 k J/mol,反應(yīng)級(jí)數(shù)增加,指前因子減小,說(shuō)明鋁對(duì)GAP球形藥的固化反應(yīng)具有消極影響;模型與實(shí)驗(yàn)數(shù)據(jù)吻合較好,說(shuō)明可利用流變學(xué)等溫測(cè)試方法研究固體GAP球形藥的固化過(guò)程;對(duì)0%和10%鋁兩個(gè)體系的黏度變化進(jìn)行分析發(fā)現(xiàn),鋁主要影響到GAP球形藥固化的第二階段,使異氟爾酮二異氰酸酯分子上位阻較大的異氰酸酯基反應(yīng)更加困難,活化能增大。
[Abstract]:In order to study the effect of aluminum on the curing process of poly (azide) glycidyl ether (GAP) modified spherical drug, the effect of aluminum on the curing kinetics of GAP modified spherical drug was studied by means of rheological isothermal test. The curing kinetic parameters of GAP spherical compound containing 0% Al and 10% Al were solved by means of thermal analysis kinetic Sestak-Berggren model, and the curing kinetics models of the spherical drug containing 0% Al and 10% Al were established respectively. The results showed that the apparent activation energy did not change much during the curing process of GAP spherical drug. The apparent activation energy was 64.8 kJ / mol in the range of 0 conversion and 85.1 kJ / mol in the presence of aluminum. The increase of reaction order and the decrease of prefinger factor indicate that aluminum has a negative effect on the curing reaction of GAP spherical drug. The model is in good agreement with the experimental data, indicating that the curing process of solid GAP spherical drug can be studied by means of rheological isothermal test. The viscosity changes of 0% and 10% Al systems were analyzed. It was found that aluminum mainly affected the second stage of GAP spherical curing, which made isocyanate-based reaction with higher molecular resistance to isoflurane diisocyanate more difficult and activation energy increased.
【作者單位】： 中北大學(xué)化工與環(huán)境學(xué)院;
【分類號(hào)】：V512
本文編號(hào)：2442349
[Abstract]:In order to study the effect of aluminum on the curing process of poly (azide) glycidyl ether (GAP) modified spherical drug, the effect of aluminum on the curing kinetics of GAP modified spherical drug was studied by means of rheological isothermal test. The curing kinetic parameters of GAP spherical compound containing 0% Al and 10% Al were solved by means of thermal analysis kinetic Sestak-Berggren model, and the curing kinetics models of the spherical drug containing 0% Al and 10% Al were established respectively. The results showed that the apparent activation energy did not change much during the curing process of GAP spherical drug. The apparent activation energy was 64.8 kJ / mol in the range of 0 conversion and 85.1 kJ / mol in the presence of aluminum. The increase of reaction order and the decrease of prefinger factor indicate that aluminum has a negative effect on the curing reaction of GAP spherical drug. The model is in good agreement with the experimental data, indicating that the curing process of solid GAP spherical drug can be studied by means of rheological isothermal test. The viscosity changes of 0% and 10% Al systems were analyzed. It was found that aluminum mainly affected the second stage of GAP spherical curing, which made isocyanate-based reaction with higher molecular resistance to isoflurane diisocyanate more difficult and activation energy increased.
【作者單位】： 中北大學(xué)化工與環(huán)境學(xué)院;
【分類號(hào)】：V512
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1 歐陽(yáng)曙光;付樂(lè)樂(lè);蘇曉麗;王子侃;;一種高爐噴吹煤可磨性測(cè)試方法研究[J];煤質(zhì)技術(shù);2013年02期
，本文編號(hào)：2442349
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