简要介绍了不饱和端羟基聚醚的封端方法。
The method of blocking unsaturated polyether has been described.
将端羟基聚丁二烯与聚氨酯进行共混改性，提高了聚氨酯基体的表观交联度及推进剂的拉伸强度。
When blend modification of HTPB and PU are done, the apparent crosslinking density of PU matrix in - creases, and the tensile strength of propellant enhances.
探讨了烷氧基硅烷封端率及端羟基聚丁二烯的含量对单组分密封胶的力学性能、硬度及表干时间的影响。
The effects of different silane end-capped ratios and HTPB content on mechanical properties, hardness and surface dry time of the sealant were discussed.
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).
简要介绍了不饱和端羟基聚醚的封端方法。讨论了封端剂用量、反应温度和时间等因素对封端反应的影响问题。
The method of blocking unsaturated polyether has been described. The effects of amounts of blocking agent, temperature and time on the blocking reaction were studied.
首先，本文借助正交实验设计和单因素寻优等有关实验方法对端羟基环氧环己烷均聚醚的合成工艺进行了研究。
Firstly, with the orthogonal design method and single-factor-experiment, the technics of synthesizing Hydroxyl-terminated poly (l, 2-cyclohexene oxide) have been studied in this paper.
本文介绍了端羟基超支化聚合物的研究进展，合成方法及在各个领域的应用，并展望了其在皮革工业中的应用前景。
The researching progress, synthesis and applications of hyperbranched polymer with terminal hydroxyl are introduced, and the application foreground of leather industry is forecasted.
其次，本文用正交实验设计和单因素寻优等有关实验方法对端羟基环氧环己烷-四氢呋喃共聚醚的合成工艺进行了研究。
Secondly, with the orthogonal design method and single-factor-experiment, the technics of synthesizing Hydroxyl-terminated copolymer of CHO -thf have been studied in this paper.
通过改变端羟基聚丁二烯（HTPB）基PBX的固化参数与黏结剂的含量，制备了一系列具有不同模量的PBX，利用50%特性落高法对其撞击感度进行测试。
A series of HTPB-based PBX with different mechanical modulus were prepared by varying curing parameters or content of HTPB. The impact sensitivity of the PBX was characterized by H_(50) drop height.
本发明与端双羟基官能化遥爪聚合物的制备方法有关。
This invention relates to a method for preparing dihydroxyl-terminated telechelic polymer.
它将点燃固体推进燃料(HTPB，或称羟基封端聚丁二烯)和液体氧化剂(高挥发性过氧化物，HTP)的混合物持续20秒。
It will burn a mixture of solid propellant (HTPB, or hydroxyl-terminated polybutadiene) and liquid oxidiser (high-test peroxide, HTP) for 20 seconds.
采用Z桨捏合机，将端乙烯基硅橡胶、气相法白炭黑及羟基硅氧烷进行混炼，制备了高强度硅橡胶混炼胶。
High strength silicone rubber compounds were prepared using vinyl-terminated silicone rubber, fumed silica and hydroxy siloxane by intensive mixing method in Z blade mixer.
合成了以羟基封端的脂肪族聚碳酸酯-聚乙基醚碳酸酯二醇（PEECD），并用于环氧（EP）树脂的增韧。
One kind of hydroxyl - terminated aliphatic polycarbonate, i. e. poly(ethylene ether carbonate) diol(PEECD) was synthesized and used to toughen epoxy resin (EP) .
耐溶剂粘合剂，其通过使用过氧化物或硅烷来交联羟基或脲或烃封端的不饱和聚氨酯或聚氨酯-脲聚合物而获得。
A solvent resistant adhesive obtained by the crosslinking of a hydroxyl or urea or hydrocarbon terminated unsaturated polyurethane or polyurethane-urea polymer with a peroxide or a silicone hydride.
其次对双羟基聚醚的端烯丙基化反应进行研究，讨论了反应时间、反应温度、聚醚分子量、烯丙基化试剂的种类和用量对反应的影响。
The terminal allylation reaction was studied which was influenced by reaction time, reaction temperature, category and dosage of allylation reagent and molecular weight of polyether.
此外，在保证重要药效特征的基础上，还选择了4-羟基-喹啉、喹啉和二茂铁类作为芳环A端的构建单元。
In addition, other building blocks such as 4-hydroxy-quinoline, quinoline, and ferrocene were incorporated into group A for our combinatory library design, alternativly.
另一端为羟基和羧基，具有亲水性。
Another end for the hydroxyl and the carboxyl group, has the water affinity.
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.
本发明涉及一种端双羟基官能化的遥爪聚合物及其制备方法，其特征在于采用了易水 解离去的硅烷保护基团保护的引发剂。
This invention relates to a method for preparing dihydroxyl-terminated telechelic polymer. The method uses an initiator that can be easily hydrolyzed and is protected by silicane protective groups.
以羟基作为聚醚链端基的的催化活性最高，在相同条件下，其表观一级速率常数约为的3倍， 为的30倍。
Under the same condition, the pseudo-first-order rate constant kobs (s-1) of BNPP hydrolysis catalyzed by is about 3 times that of , and about 30 times that of , respectively.
以羟基作为聚醚链端基的的催化活性最高，在相同条件下，其表观一级速率常数约为的3倍， 为的30倍。
Under the same condition, the pseudo-first-order rate constant kobs (s-1) of BNPP hydrolysis catalyzed by is about 3 times that of , and about 30 times that of , respectively.
应用推荐