本发明涉及一种以苯乙烯基团封端的等规聚丙烯及其制备方法。
The invention relates to an isotactic polypropylene capped with a styrene group and a preparation method thereof.
本发明公开了一种降冰片烯封端的聚酰亚胺树脂及其制备方法与应用。
The invention discloses norbornene-blocked polyimide resin, a preparation method and the application thereof.
本发明公开了一种叠氮基封端的聚合物的制备方法及其对碳纳米管表面的化学修饰的方法。
The invention discloses a preparation method of an azido blocking polymer and a method of the chemical modification of the azido blocking polymer for the surface of carbon nano tubes.
用甲基丙烯酸羟乙酯封端的水性聚氨酯预聚体与丙烯酸酯发生聚合，制备丙烯酸酯改性水性聚氨酯分散体。
The title aqueous acrylate modified polyurethane dispersion has been prepared with acrylate and aqueous polyurethane prepolymer that is blocked with hydroxyethyl methacrylate.
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) .
以异氰酸酯封端的聚氨酯预聚体(PU)与环氧树脂(EP)发生反应，制备了聚氨酯接枝改性环氧灌封材料。
Epoxy encapsulating materials grafted and modified with polyurethane (PU) was prepared by reaction of -nco-terminated PU prepolymer with 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.
通过聚氨酯预聚体法合成出硅烷KH-550封端的聚氨酯热熔胶（SPUR），并制备了一系列不同封端率的硅烷化聚氨酯热熔胶。
Silylated hot melt moisture cured polyurethane adhesive(SPUR)was prepared with KH-550, and a series of polymer was synthesized with different silane ending ratio.
这是因为用于封送和解封的代码以及用于网络通信的代码隐藏在客户端和服务器应用程序中。
This is because the code for marshaling and unmarshaling, and the code for network communication is buried in the client and server applications.
有一种情况是，与我一起工作的客户端想要一封电子邮件，其内容是定制的，而不是“即时可用”的包可以完成的。
In one case, a client whom I worked with wanted an E-mail whose content was more customized than is possible using the out-of-the-box package.
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.
我从桌上拿起一杯水，用手指封着吸管的一端，滴了几滴凉凉的水到她的嘴里，以缓解她的干渴。
Taking a glass of water from the table, I put my finger over the end of the straw and allow a few drops of the cool moisture to slide into her mouth and ease her thirst.
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.
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 effects of amounts of blocking agent, temperature and time on the blocking reaction were studied.
介绍了封端异氰酸酯化学，包括封闭剂类型、解封温度与性能以及相关的催化剂、溶剂、分析技术。
The chemistry of blocked isocyanates including the type, the dissociation temperature, and the performance of the blocked groups was introduced in this paper.
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.
半球形封头壁厚与筒体壁厚不相等的高压容器是由端部密封装置、筒体、半球形封头和加强箍等组成的一种新结构容器。
High pressure vessel with hemispherical head thinner than cylinder wall is a new type of vessel which consists of sealing device, cylinder, hemispherical head and reinforcing ring.
对在压力容器缠绕成型中，同一个纵向缠绕层中两端封头采用不同的缠绕角缠绕进行缠绕线形的理论分析与计算。
In this paper, we conduct the analysis and calculation to the winding pattern of the pressure vessels with different winding angle in both of the dome ends in the same winding layer.
采用喷涂封严涂层的方法调整叶片端部与发动机涡轮机壳之间的间隙以提高发动机效率。
Seal coating sprayed is currently used to adjust the gap between the blade tip and engine casing and improve engine efficiency.
研究了水溶性封端聚氨酯丝绸整理剂的应用工艺，并探讨了其防皱机理。
Application process of water soluble capped polyurethane finishing agent for silk was studied and its anti-crease mechanism investigated.
传统的线圈成型模只能成型线圈的端部形状，而该装置在此基础上增加了对线圈的预弯、铲头、封焊等功能，在定子线圈热压前一次完成以上各工序。
But in this shaping installation, besides the mentioned functions, shaping, shoveling, soldering and sealing of the stator coils can be completed at the same time before hot pressing.
扩链剂的用量存在最佳值，用量不足时偶联反应不充分，用量过量时封端反应加剧。
There existed an optimal dosage of the chain extender, lack of which caused deficiency of chain extension and excess of which led to more blocking reaction.
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.
丙烯酸在聚合物中的分布也许是随机的，但是如果这些丙烯酸在聚合物中是封端排布的话，效果会更好。
The distribution of the acid groups may be random, but better results are obtained by introducing poly-acrylic acid blocks.
用异佛尔酮二异氰酸酯与氨基硅油反应，然后用饱和亚硫酸氢钠封端，合成出具有反应性的聚氨酯改性硅油。
Polyurethane modified amino-silicone oil was synthesized by the reaction of amino-silicone oil and IPDI, and capped with saturated sodium hydrogen sulfite.
用异佛尔酮二异氰酸酯与氨基硅油反应，然后用饱和亚硫酸氢钠封端，合成出具有反应性的聚氨酯改性硅油。
Polyurethane modified amino-silicone oil was synthesized by the reaction of amino-silicone oil and IPDI, and capped with saturated sodium hydrogen sulfite.
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