A core - shell emulsion with proper viscosity and good stability is prepared by methyl methacrylate ( mma ) , butyl acrylate ( ba ) and acrylate acid as main monomers , through seed emulsion polymerization with semi - continuous adding method 摘要采用甲基丙烯酸甲酯,丙烯酸丁酯和丙烯酸为核壳阶段的单体,通过半连续滴加的种子乳液聚合的合成工艺,得到了一种粘度适中,稳定性良好,具有核壳结构的乳液。
Self - crosslinkable latex at room temperature with high elasticity is prepared when n - hydroxymethyl acrylamide is used as self - crosslinkable monomer , and poly solidum maleate is applied as protective colloid , and pre - emulsified and semi - continuous seeded emulsion polymerization is adopted 采用n -羟甲基丙烯酯胺为自交联单体,聚马来酸钠为保护胶体,采用预乳化半连续种子乳液聚合工艺,制备出高弹性室温自交联乳液。
We adopt the semi continuous pouring process and mainly manufacture the products marked 1xxx 3xxx 4xxx 7xxx 8xxx and the like by means of 1500 hot - rolling mill , 1400 cold - rolling mill , 1400 mill of aluminum strip and foil , 800 roughing or finishing aluminum foil mill 产品介绍本公司采用半连续浇铸工艺,经1500热轧机, 1400冷轧机, 1400铝带箔轧机及800铝箔粗中精轧机等铝材,主要生产1xxx , 3xxx , 4xxx , 7xxx , 8xxx等系列牌号。
Shenyang alloy material co . , ltd . ’ s transferring item is one of the important transforming items for us , which has approved by national financial department by means of using japan ' s loan , the importance of item includes the advanced half continual vacuum melting furnace 、 simultaneous x - ray spectrometer system 、 fluorescent analyzed instruments ; advanced annealed furnace 、 vacuum annealed furnace and other heat treated furnish etc , and others totally 50 types 沈阳合金材料有限公司的搬迁改造项目是国家发改委和财政部批准的国家利用日元贷款改造重点项目之一,项目重点改造内容有引进国外最先进的半连续真空感应熔炼炉、 x荧光分析仪、直读光谱仪;国内先进的罩式退火炉、真空退火炉等热处理设备及一些冷加工设备,共增添新设备五十多台套。
The controllers are not only capable of restrain seismic excitation and also stabilize the control system . made mrd imitate the desirable active control force efficiently , the semi - connected and clipped - optimal control algorithm was put forward . studied the uncertainties about mrd , a robust stability h _ 2 / h _ controller was performed to achieve the performance of disturbance rejection and robust 为了使mrd能更好地模仿期望的主动控制力,提出半连续限幅最优控制策略,并讨论mrd跟踪主动控制力时存在的不确定性,设计了具有鲁棒性能的h _ 2 / h _混合控制器。
The microstructure observation in the microfissures suggests the liquation microcrack results from grain boundary liquation by constitutional liquation of mc carbides and formation of continuous and or semi - continuous low melting liquid films , however , the occurrence of the solid state microcracks can be attributed to the effect of ultrafast transit thermal shock introduced by high energy electron beam 液化裂纹起源于mc碳化物的组份液化而形成的晶界连续或半连续的低熔点共晶液化膜,固相裂纹形成的则是高能电子束流的快速瞬态热冲击效应的直接结果。
Using topological degree for upper semicontinuous set - valued 1 - set - contractive mapping and the fixed point theorems for upper semicontinuous set - valued 1 - set - contractive mapping , the boundary conditions of existing positive fixed points is studied for upper semicontinuous set - valued 1 - set - contractive mapping 摘要利用上半连续集值1 -集压缩映射的拓扑度以及上半连续集值1 -集压缩映射的不动点定理,研究它在锥中的情形,即研究上半连续集值1 -集压缩映射正不动点存在的边界条件。