扩链剂是用来将聚二甲基硅氧烷两端活性较弱的羟基转变为高活性的异氰酸酯基。
The chain extender is used to convert the low-activity hydroxy groups of both ends of the polydimethylsiloxane into high-activity isocyanate groups.
用含有异氰酸酯基的预聚体对热塑性淀粉材料（T PS）表面进行了疏水化处理。
The surface of thermoplastic starch(TRS) is hydrophobicated with prepolymers having —NCO groups.
最后，当然，利息的主要反应是异氰酸酯基和羟基的聚酯或聚醚组反应形成聚氨酯组。
Lastly, of course, the main reaction of interest is the formation of urethane groups by reaction of isocyanate groups and hydroxy - groups of the polyester or polyether.
由于异氰酸酯基能与水发生反应，异氰酸酯系化合物不能与水系胶粘剂直接混合使用。
Just because isocyanate in the hardener could react with H2O, isocyanate compound could not be used by directly mixing with water-based adhesive.
通过添加由端羟基丁二烯——丙烯腈共聚物(HTBN)制得的端异氰酸酯基预聚物，可改性环氧树脂。
Modified epoxy resin was produced by adding the isocyanate-terminated prepolymer obtained from hydroxy-terminated butadiene-acrylonitrile copolymer (HTBN).
该方法用于聚氨酯中微量游离异氰酸酯基的测定，相对标准偏差小于5%，具有简便、快速、准确、可靠的特点。
The relative standard deviation (RSD) of this method is less than 5 % and this method has been used to determine trace amounts of n...
异氟酸酯、多元醇、硅烷等原材料的选择以及异氰酸酯基与羟基的配比是影响S PU密封胶性能的主要因素。
The selection of raw materials such as iso- cyanate, polyol and silicone etc, and the ratio of isocyanate and hydroxy are the main factors affecting the properties of SPU sealant.
我们认为这是由于烷基异氰酸酯从阴极得到电子发生比分子偶联，芳基异氰酸酯则是与阴极析出的高分散的活性镁起作用。
This is because of the coupling reaction between two alkyl compounds occurred by gaining electron from cathode, and aryl isocyanate reacted with high dispersed active magnesium on the cathode.
以液态聚硫橡胶、异氟尔酮二异氰酸酯和扩链剂3，6 -二甲硫基-2 ，5 -二甲苯胺为原料，合成了不同硬段质量分数的聚硫硫代聚脲。
A series of polysulfide based thio-polyurea was synthesized, which were based on isophorone diisocyanate, liquid polysulfide and 2,5-diamino-3,6-dimethylmercapto toluene.
以液态聚硫橡胶、异氟尔酮二异氰酸酯和扩链剂3，6 -二甲硫基-2 ，5 -二甲苯胺为原料，合成了不同硬段质量分数的聚硫硫代聚脲。
A series of polysulfide based thio-polyurea was synthesized, which were based on isophorone diisocyanate, liquid polysulfide and 2,5-diamino-3,6-dimethylmercapto toluene.
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