工程塑料应用
工程塑料應用
공정소료응용
ENGINEERING PLASTICS APPLICATION
2014年
2期
55-58
,共4页
聚对苯二甲酸1,4-环己烷二甲酯%均匀设计%聚合反应%工艺条件优化
聚對苯二甲痠1,4-環己烷二甲酯%均勻設計%聚閤反應%工藝條件優化
취대분이갑산1,4-배기완이갑지%균균설계%취합반응%공예조건우화
poly(1,4-cyclohexylenedimethylene terephthalate)%uniform design%polymerization%process condition optimization
采用均匀设计的方法，对聚对苯二甲酸1，4-环己烷二甲酯(PCT)熔融缩聚反应工艺条件进行了系统研究。以原料1，4-环己烷二甲醇(CHDM)与精对苯二甲酸(PTA)的物质的量之比n、熔融缩聚反应温度T、熔融缩聚反应时间t和催化剂浓度ccat为变量，以合成的PCT特性黏度[η]为指标，按照4因素7水平的均匀设计方案安排实验，根据实验结果拟合得到了各工艺参数与[η]之间的关系方程式，由该方程式得到了PCT熔融缩聚反应最优工艺条件：n为1.9，T为305.3℃；t为120 min；ccat为1400μmol/mol PTA。在该最优工艺条件下，预测的[η]值为0.83 dL/g，与实际实验的验证结果相吻合。最后，基于最优工艺条件，讨论了各个工艺参数的变化对[η]的影响。结果发现，在实验考查范围内，随n和T的增加，[η]先升高后降低；随t的增加，[η]先快速升高而后其升高趋势逐渐变缓；[η]随ccat的增加呈线性增长的趋势。
採用均勻設計的方法，對聚對苯二甲痠1，4-環己烷二甲酯(PCT)鎔融縮聚反應工藝條件進行瞭繫統研究。以原料1，4-環己烷二甲醇(CHDM)與精對苯二甲痠(PTA)的物質的量之比n、鎔融縮聚反應溫度T、鎔融縮聚反應時間t和催化劑濃度ccat為變量，以閤成的PCT特性黏度[η]為指標，按照4因素7水平的均勻設計方案安排實驗，根據實驗結果擬閤得到瞭各工藝參數與[η]之間的關繫方程式，由該方程式得到瞭PCT鎔融縮聚反應最優工藝條件：n為1.9，T為305.3℃；t為120 min；ccat為1400μmol/mol PTA。在該最優工藝條件下，預測的[η]值為0.83 dL/g，與實際實驗的驗證結果相吻閤。最後，基于最優工藝條件，討論瞭各箇工藝參數的變化對[η]的影響。結果髮現，在實驗攷查範圍內，隨n和T的增加，[η]先升高後降低；隨t的增加，[η]先快速升高而後其升高趨勢逐漸變緩；[η]隨ccat的增加呈線性增長的趨勢。
채용균균설계적방법，대취대분이갑산1，4-배기완이갑지(PCT)용융축취반응공예조건진행료계통연구。이원료1，4-배기완이갑순(CHDM)여정대분이갑산(PTA)적물질적량지비n、용융축취반응온도T、용융축취반응시간t화최화제농도ccat위변량，이합성적PCT특성점도[η]위지표，안조4인소7수평적균균설계방안안배실험，근거실험결과의합득도료각공예삼수여[η]지간적관계방정식，유해방정식득도료PCT용융축취반응최우공예조건：n위1.9，T위305.3℃；t위120 min；ccat위1400μmol/mol PTA。재해최우공예조건하，예측적[η]치위0.83 dL/g，여실제실험적험증결과상문합。최후，기우최우공예조건，토론료각개공예삼수적변화대[η]적영향。결과발현，재실험고사범위내，수n화T적증가，[η]선승고후강저；수t적증가，[η]선쾌속승고이후기승고추세축점변완；[η]수ccat적증가정선성증장적추세。
Uniform design method was introduced to optimize melt polycondensation process conditions of poly (1, 4-cyclohexylenedimethylene terephthalate) (PCT) polymerization. Taking molar ratio (n) of CHDM and PTA,melt polycondensation temperature (T),melt polycondensation time (t) and catalyst concentration (ccat) as variable and intrinsic viscosity [η] of the synthesized PCT as index. The optimizing experimentation was carried according to the uniform design method of 4 factors in 7 levels,the equation of relationship between process conditions and [η] was obtained according to the experimentation results, then the best melt polycondensation process conditions were gained from the equation: n=1.9,T=305.3 ℃,t=120 min and ccat=1 400 μmol/mol PTA. In the best process conditions,the predicted [η] value is 0.83 dL/g,which is consistent with the experimental test result. Finally,the relationship between each process paramater and [η] were also discussed based on the best process conditions. The results show that in the range of experimental study,with the increase of n and T,[η] increases firstly and decreases lastly,with the increase of t,[η] first increases rapidly and then it’s increasing trend becomes slow,with the increase of ccat,[η] increases linearly.
