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.
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.
带水剂、封端剂及其配比对产品粘度、溶解性、颜色等影响不大；
Water-taking agent, capping agent and their ratio didn't largely affect the viscosity, solubility and colourity of product.
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.
本发明用于封端聚醚的合成，能有效提高反应选择性和聚醚封端率。
The present invention is used in the synthesis of capped polyether to raise the reaction selectivity and polyether capping rate effectively.
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.
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.
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.
该成膜剂优选在允许该聚氨酯成膜剂同时或几乎同时去封端和固化的温度下去封端。
The blocking agent preferably de-blocks at a temperature that permits simultaneous or nearly simultaneous de-blocking and curing of the polyurethane film former.
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.
精密控制涂封深度是工艺关键。以新宝华公司新型封端机为例，介绍设备的结构和工作原理。
With the new end-coating machines made by new Baohu Co. as example, the structure and principle of end-coating machines are presented.
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.
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.
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.
本发明使用不含水的碱性无机固体微胶囊，可以在反应过程中缓慢释放强碱，确保反应选择性和封端率。
In this invention, alkaline inorganic solid microcapsule is used, and the latter can slowly release strong alkali to ensure the reaction selectivity and the and capping rate.
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.
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.
主要介绍了FDR- 0 4 0 2型片式电阻封端机的系统功能、适用范围、电气设计、软件设计等。
The article mainly introduces system functions, range of usage, electronics design, software design of FDR-0402 ATM.
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.
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) .
研究了十四种不饱和羧酸酐的N -苯基二酰亚胺的热聚合反应，以此作为“PMR”聚酰亚胺封端剂的选择。
The polymerization of fourteen N-phenyl unsaturated dicarboximides were studied for the selection of capping agents of "PMR" polyimides.
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.
结果表明，采用蓖麻油与甲苯二异氰酸酯（TDI）反应，加入封端剂乙二醇烷基醚类，得到封端型聚氨酯预聚体。
The results showed that the terminated prepolymer was prepared by introducing ethylene glycol alkyl ether as a capping agent into the reaction system of castor oil and tolylene diisocyanate (TDI).
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.
以聚乙二醇和二异氰酸酯为原料，以酚类物质为链封端剂合成了缔合型增稠剂；检测了该增稠剂的性能，并与其他同类产品作了对比。
The associative thickener is prepared with polyethylene glycol and diisocyanate as raw materials, phenol as chain blocker. Its performances are tested and compared with the like.
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.
当该过程在OR b中完成时，OR b对响应进行封送处理并返回给客户端。
When the process is complete in the ORB, the ORB marshals the response back to the client.
当该过程在OR b中完成时，OR b对响应进行封送处理并返回给客户端。
When the process is complete in the ORB, the ORB marshals the response back to the client.
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