1) isotacticity
等规度
1.
How to control the isotacticity of polypropylene products when using N-type catalyst on the intermittent installation;
N型催化剂在间歇式聚丙烯装置上应用时聚丙烯产品等规度的控制
2.
The results showed that the CMAX 120 catalyst, compared with import one,was possessed of slightly lower average catalytic activity,lower susceptibility of hydrogen adjustment and a little higher adjusting ability of isotacticity.
结果表明,与进口催化剂相比,CMAX120型催化剂的平均活性略低、氢调性略差、等规度调节性略优;2种催化剂所得产品PP粉料的粒径分布相差较大,其中CMAX120型催化剂所产PP中细粉含量明显增加,平均粒径较小;CMAX120型催化剂所产PP除清洁度略差于进口催化剂生产的PP产品外,其他质量指标均相当,产品质量合格。
3.
The results showed that isotacticity of polymer increased at first with the increase of n(DDS)/n(Ti),and then decreased.
考察了负载钛(Ti)-三乙基铝(AlEt3)催化体系聚合条件对合成高等规度的聚丁烯-1的影响,并用DSC和FTIR对所合成聚合物的结构进行表征。
2) isotactic index
等规度
1.
It was found that with the increase of the polymerization temperature, the activity of the catalyst increased and reached the optimum at 40℃, but had no significant effect on the isotactic index of the product.
结果表明:催化剂的活性随着聚合反应温度的升高逐渐增大,在40℃时达到最大值,聚合反应温度对聚合物等规度的影响较小;随着n(AlEt3)/n(Ti)增大,催化剂的活性先增大,后逐渐减小,最后趋于稳定,聚合物等规度随着n(AlEt3)/n(Ti)的增大逐渐降低;外给电子体二苯基二甲氧基硅烷对所合成的催化剂在聚合物等规度的调节上作用明显。
2.
The control of isotactic index of the PP manufacture with high fluid and high impact property was sum.
以高流动、高抗冲聚丙烯生产中等规度的控制为研究对象,对生产中等规度与聚合温度、时间、MFR、乙丙含量、Teal/Donor的函数关系进行了研究分析。
3.
The FFT power spectrum analysis of decomposited signals were used as some inputs to predicte isotactic index(IIP) in the second model.
第二个模型以分解信号的功率频谱作为部分输入,预测聚丙烯的等规度。
3) tacticity
[tæk'tisiti]
等规度
1.
Studies on the Tacticity of Poly(methyl methacrylate) Synthesized by Atom Transfer Radical Polymerization;
甲基丙烯酸甲酯原子转移自由基聚合等规度研究
2.
Then LIPP was fractionlized by tacticity and each fraction was characterized by NMR.
研究了低等规度聚丙烯 (L IPP)固相接枝马来酸酐 (MAH)。
3.
The tacticity and molecular weight of polymers have been measured.
6～60℃范围内由~(60)Coγ射线引发聚合的甲基丙烯酸三丁基锡酯的等规度。
4) isotactic
[,aisəu'tæktik]
等规度
1.
Five factors that H2quantity input,isotactic degree,contaminations in raw material,reaction temperature so on critically affect the MFR of polypropylene.
H2的加入量、等规度、聚合反应密度、原料中杂质、反应温度等五方面因素对聚丙烯熔体流动速率具有重要影响。
5) low isotactic
低等规度
6) microisotacticity
微观等规度
1.
The microisotacticity of BOPP has been studied by 13C-NMR and DSC.
用13C-NMR(核磁共振)和DSC(差热分析)方法分析了燕山石化股份有限公司生产的BOPP均聚物,并对其微观等规度进行了研究,发现可以用外给电子体对BOPP的微观等规度进行调控,从而使BOPP树脂的拉膜质量显著提高,达到国外进口BOPP树脂的水平。
补充资料：等规度
分子式：
CAS号：
性质：又称全同立构指数或等规度。全同立构聚合物在聚合物总量中所占的百分数。其测定方法有：溶解度法、熔点法、相对密度法、（碳）核磁共振法、红外光谱法等。全同立构规整度的数值反映催化剂在聚合物反应中的定向能力的高低。
CAS号：
性质：又称全同立构指数或等规度。全同立构聚合物在聚合物总量中所占的百分数。其测定方法有：溶解度法、熔点法、相对密度法、（碳）核磁共振法、红外光谱法等。全同立构规整度的数值反映催化剂在聚合物反应中的定向能力的高低。
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参考词条