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- vapor phase polymerization 气相聚合
- The polymer of maleic acid was first prepared by water phase polymerization with maleic anhydride,and then esterified with cetric acid to form durable press finishing agent. 采用马来酸酐水相聚合生成聚马来酸酐,然后与柠檬酸酯化合成可固化的印染助剂聚多元羧酸酯。
- At point e, the substance is wholly in the vapor phase. 到e点时,物质全部变为气相。
- Compatible with infrared and vapor phase reflow solder process. 适用于回流焊接工艺。
- The flame retardants containing bromine or chlorine also decompose when the polymer decomposes to form volatile combustibles. The halogen escapes with the volatile combustibles and acts in the vapor phase to inhibit flaming combustion. 在聚合物分解时,含有溴或氯的阻燃剂也会分解成可燃性气体,卤素也与可燃性气体一起释放出,它在气态时会阻止燃烧。
- Liquid and vapor phases cannot coexist in equilibrium. 液相和气相不能在平衡中共存。
- In gas phase polymerization fluidized-bed reactor (FBR), polymerization rate, devolatilization rate, cost of post-treament after polymeric process and polymer properties may be affected by polymer particle size distribution. 气相法流化床聚乙烯生产过程中,聚乙烯颗粒粒径分布影响聚合速率、脱挥速率、后处理工序生产成本和最终的聚乙烯物性。
- The vapor phase concentration of durene could be adjusted by the self-made adjustor. 自制的高熔点物料气相浓度调控仪能很好地调控气相中均四甲苯的浓度,具有推广应用价值。
- The first step for removing vapor is to orient the package to access the vapor phase of the product. 提取蒸气的第一步是调整钢瓶的方位,使可以接触产品的气相。
- The effects of prepolymerization and the differences in apparent kinetics between gaseous phase polymerization and slurry polymerization are also briefly described. 同时对预聚合的作用及气相聚合与淤浆聚合表观动力学行为的不同性也作了简要介绍。
- High quality GaN film was grown by hydride vapor phase epitaxy(HVPE) using porous AAO as mask. 采用均匀的多孔阳极氧化铝做掩膜在氢化物气相外延设备中生长出高质量的氮化镓膜。
- The Ti/SiO_2 catalyst used for gas phase polymerization of propylene and ethylene/propylene consists of SiO_2, BEM, 2, 2, 2-trichloroethanol, TiCl_4, etc. 以SiO_2、丁基乙基镁(BEM)、三氯乙醇、TiCl_4为主要原料合成了Ti/SiO_2催化剂。
- Single crystal MTN has been synthesized by vapor phase transport route(VPT) using n-propylamine as a new template. 采用蒸气相合成法,以正丙胺作为笼形类沸石材料MTN合成的新模板剂,合成出MTN单晶。
- This paper presents a review concerning the Ziegler-Natta catalysts for gaseous phase polymerization of ethylene and typical methods of preparing the catalysts. 本文综述了乙烯气相聚合催化剂研究状况,列举了一些制备气相聚合催化剂有代表性的方法。
- There are mainly two methods to prepare nano sized titania, uch as vapor phase process and liquid phase process. 纳米钛白的制备方法大致可分为两类,即气相法和液相法,而液相法是研究的重点和热点。
- Objective: To determine content of guajacolum in bamboo juice with vapor phase chromatography(VPC) as the quality control target of bamboo juice. 目的:通过用气相色谱测定鲜竹沥中愈创木酚的含量,作为鲜竹沥的质量考核指标。
- A kind of CrF 3 based catalyst for HHFC 134a preparation by reacting HFC 133a with AHF via vapor phase fluorination is reported. 报道了一种由HCFC 133a与AHF经气相催化氟化制备HFC 134a的CrF3 基催化剂。
- Vapor phase synthesis of 2,3,5-trimethyl phenol from methanol and 3,5-dimethyl-phenol over solid acid catalyst was studied in a fixed bed reactor. 制备并考察了甲醇甲基化法合成2,3,5-三甲基苯酚的固体酸催化剂,进行了甲基化反应工艺条件的优化研究。
- The solid phase polymerization equipment needs high quality nitrogen, and the work conditions for the purified system equipment of nitrogen is acrimonious. The structure design and the manufacture process of nitrogen heat changer are also introduced. 固相缩聚装置氮气质量要求高 ,氮气净化系统设备工作条件苛刻 ,介绍了氮气换热器的结构设计和制造工艺
- Comprehensive survey of vapor phase inhibitors both at home and abroad is given. The application of VPI and the research trend are discussed. 介绍了国内外的气相缓蚀剂技术发展概况,阐述了气相缓蚀剂技术的应用形式,展望了该技术领域内的研究方向。