The flocculation mechanism of PACSAM is chemical reaction, intermolecular hydrogen bonding, charge neutralization and bridging action, etc. PACSAM的絮凝机理包括化学反应、分子间氢键、电中和及架桥作用等。
In writing reaction mechanisms, the timing of the proton bonding to the oxygen is merely a detail. 在写反应机理时,质子与氧键连的时机只是细节。
Fabrication of Al_2O_3/ ZrO_2 and Al_2O_3/ SiC Ceramic Composite Coatings Using Electrophoretic Deposition and Reaction Bonding Process 电泳沉积和反应烧结制备ZrO2/Al2O3和SiC/Al2O3陶瓷复合涂层
As for neutral silicane coupling agent, when amino-group-containing organic compounds were added into it, the reaction procedure could be accelerated and the flexible material could be rotmed through self-condensation reaction so as to increase the interfacial bonding power. 对于中性硅烷偶联剂,外加胺基或含胺基的有机化合物,也可加速反应进程.自缩合反应形成有柔韧性的物质,从而提高了界面的粘接力。
Due to its weak reaction and metallurgical bonding between particles and matrix, the mechanical properties of the in situ synthesized PTMCs are improved obviously. 原位合成工艺制备的PTMCs避免了界面反应,界面清洁、结合强度高,可以明显提高PTMCs的力学性能。
Atomic reaction model for diffusion bonding of metals 金属扩散焊接的原子反应模型
The effects of SAP on the fluidity, setting time, strength properties of cement-based materials, and also on the hydration reaction by measuring the chemical bonding water amount were discussed. 考察了掺加吸水树脂的水泥试样的强度、流动度、凝结时间等性能,并通过测定化学结合水量研究了吸水树脂对水泥水化作用的影响。
The status quo and progress in reaction wetting, reactive brazer, interfacial reaction, joint strength and partial transient liquid-phase bonding were reviewed in this paper. The problems needed to further study are pointed out. 本文综述了近年来在反应浸润、活性钎料、界面反应、连接强度和部分瞬间液相连接方面的研究现状和进展,指出了有待进一步研究的问题。
From the relationship between the reaction condition and the properties of the nonwovens, the factors are known to affect the properties of fabric including reaction temperature, bonding agent concentration, crosslink and catalyst concentration. 实验表明,影响非织造布性能的反应条件依次为:反应温度,粘合剂浓度,交联剂含量及催化剂含量。
Silicon Nitride-Silicon Carbide Kiln Furniture Produced by Reaction Bonding 氮化硅结合碳化硅窑具材料的研制
Interfacial Reaction in Transient Liquid-phase Bonding of Al_2O_3 to Cu with Interlayer of Ti Foil Al2O3/Ti/Cu瞬间液相连接中的界面反应
The Decomposition of Zircon and the Reaction of Aluminum Oxide in AZS Bonding Materials AZS质粘结料中锆英石的分解以及和氧化铝的反应
The preparation method of alumina hollow fiber membrane by reaction bonding of aluminum oxide ( RBAO) technique combined with dry wet spinning process was introduced in this paper. 介绍了铝氧化反应结合技术与干湿法纺丝工艺相结合制备氧化铝中空纤维膜的方法。
The research status quo of diffusion bonding of ceramics to metals is reviewed in this paper, and the emphases are placed on the interface reaction, stress analysis and bonding technology. Based on this, the unsolved issues in researches are pointed out. 本文综述了陶瓷与金属扩散连接的研究现状,重点介绍了界面反应研究、残余应力分析和连接工艺研究等内容,并在此基础上指出了研究中所存在的问题。
The joints between reaction-sintered silicon carbide and recrystallized silicon carbide materials have been obtained using a reaction bonding approach. 用反应粘接的方法获得了反应烧结碳化硅材料之间、反应烧结碳化硅和重结晶碳化硅材料间的连接。
It was found by TEM that some new phases exist at the interface after the thermal cycling treatment by 1000 times, and it is considered that this kind of interfacial reaction made the interface bonding strength decreased. 透射电镜观察结果表明,经1000次热循环后,复合材料界面处出现一些新相,破坏了循环处理前良好的界面结合。
The results showed that there exists a compact interface between Al_2O_3 · SiO_2 fibre and matrix and that the proper chemical reaction can be helpful to improve the bonding of the fibre and matrix. 结果表明,在复合材料中,Al2O3·SiO2纤维与基体间存在致密界面层,适当的化学反应可改善纤维与基体的结合;
The effect of reaction phase on bonding strength was also discussed. 分析了反应相对接头强度的影响。
Chemical kinetic study for the reaction of bonding agents t313 ( b) and t313 ( b+ c) with water 偶联剂T313(B)、T313(B+C)和水反应的动力学研究
The principle of cross-linking reaction between hydroxyl and Si-H bonding in acrylic resin blocked by siloxane and double bonding in acrylic resin is described. The performance of acrylic high-solids automobile finishing with good sour-rain resistance which is produced by these two kinds of new technologies is estimated. 叙述了硅氧烷封闭丙烯酸树脂中羟基和Si&H键和丙烯酸树脂中双键交联反应的原理,对用这两种新技术途径试制的抗酸雨性优良的丙烯酸高固体分汽车面漆性能作了评介。
The reactions of isocyanate with alcohol or water are the key basic reaction for isocyanate bonding to wood. 异氰酸酯分别与醇和水的反应是异氰酸酯对木材胶接固化反应的核心基础反应。
The results indicated that bonding between the ceramic particles and matrix was reaction bonding. 结果表明,陶瓷颗粒与基体之间的结合为反应结合;
The results of thermodynamics showed that the oxidation reaction Gibbs free energy of bonding phase soluted with W and C atoms was lower than that of WC phase. 热力学分析表明,固溶了W、C原子的粘结相其氧化反应吉布斯自由能比WC氧化反应的吉布斯自由能要低,并随着氧化温度升高,两者差别变大。
The structure of the G-TiO2 composites depended on the time of solvothermal reaction. Prolonging the reaction time moderately could promote the chemical bonding of TiO2 on graphene, which was beneficial to obtain more homogeneous products. G-TiO2的结构依赖于溶剂热反应的时间,适当延长反应时间可以有利于石墨烯与TiO2之间形成化学键,得到结合更好、分散更为均一的复合材料。
But when the temperature too high ( 1473K), the thickness of VN reaction layer and the bonding strength of joint both decreased. 但是当温度过高,达到1473K时,反应层厚度降低,接头的性能下降。
The reaction bonding generated from Al oxidation is expected to cluster individual Al2O3 particles, effectively increasing the tortuosity the leak paths. 通过Al的反应键合,可以将数个Al2O3颗粒联结起来,在某种程度上也增加了漏气通道的迂曲度。
Experiment is divided into two phases, First, at high temperatures using high-titanium slag and graphite crucible wall reaction produce the bonding layer of Ti ( C, N), and investigated the influence of reaction time on Ti ( C, N) formation. 实验分为两个阶段进行。首先在高温下采用高钛渣与石墨坩埚壁反应生成Ti(C,N)粘结层,并考察反应时间对Ti(C,N)生成量的影响。
Microstructures with two different indium thickness were analyzed in detail in the thesis, from which various appeared features were studied. A reaction model was then established to describe the bonding reaction mechanism. 论文针对两种铟薄膜厚度所产生的焊接,对各自的微结构做了较为细致的研究,论述了所出现的各种结构特征,并建立了焊接反应模型以描述反应机制。
Compared with the native starch, the oxidized corn starch as raw material, effectively improves the nitrogen content of the product, degree of substitution, reaction efficiency of urea and bonding strength. 本文利用氧化玉米淀粉作为原料制备氨基甲酸淀粉酯,与传统的玉米淀粉为原料相比,有效地提高了产品的氮含量、取代度、尿素的反应效率及产品的胶合强度。