一种非晶硅膜改性弹性玻璃毛细管交联中等极性固定相色谱柱的制备

研究了非晶硅膜改性的弹性玻璃毛细管交联ＯＶ－１７０１中等极性固定相色谱柱。在适当温度下，采用过氧化二异丙苯（ＤＣＵＰ）游离基引发交联ＯＶ－１７０１固定液，成功地制备了交联ＯＶ－１７０１柱，该柱具有柱效高、惰性好、耐溶剂、抗腐蚀和耐高温等性能，是一种新型高性能的中等极性交联柱。     

The Chemistry of the Noncrystalline State

This article sets out to describe and account for the chemical and physical consequences of the presence of gross disorder in solids. Knowledge of the structure of such disordered materials is an obvious prerequisite to a further understanding of other properties and behavior, and our current knowledge of the structure of various noncrystalline systems is discussed together with the experimental techniques which need to be employed in order to obtain such information. The so-called glass transition, which takes place as a liquid is supercooled below the crystallization temperature, is discussed in terms of the various models which have been proposed to account for this phenomenon. The effect of noncrystallinity on electronic properties is also discussed, and we highlight new developments in the understanding of electron localization and transport processes. Finally, two applications of amorphous solids are considered in some detail: optical fibers for use in communication networks and “superionic” glasses for possible use in solid-state batteries.     

电刷镀含钛合金非晶态镀层的晶化动力学(Ⅰ)

电刷镀技术在我国推广应用已有十余年的历史．作者在研究中发现，用电刷镀方法制备的含铁合金镀层具有非晶态固体结构，并且肯定添加剂的存在对非晶态的形成有举足轻重的影响＊．非晶态镀层属亚稳态材料，温度较低时结构和性能都相对稳定．而且稳定性衡量指标最简单的方法可采用玻璃转变温度L或开始晶化温度C来表示非晶态材料的稳定性·见或℃越高，其稳定性就越高风．也可用凸c一又Tg或晶化活化能E作为稳定性的参数”‘」．凸℃或B值越大稳定性就越高．而所有这些指标都可以用热分析方法直接测得．本文研究了一组采用相同化学组成，但其…     

电刷镀含钛合金非晶态镀层的晶化动力学(II)

用热分析仪研究非晶态材料的晶化动力学有两大类方法：等温法和变温法．变温法测定动力学参数的优点是简便，需要的样品量少，能在反应开始到结束的整个温度范围内连续计算动力学参数．晶化反应是一种相变反应．反应前后没有重量的变化，因此，只能采用差热分析法D’fA或差示扫     

电刷镀含钛合金非晶态镀层的晶化动力学(I)

The aim of the present paper is to use non-isothermal differental scanning calorimentry technique to study the crystallization kinetics of a series of Ti-Ni-P electro brush plating amorphous coating plated using the solution in which the acid concentration is pH3, pH5, pH7, pH9 separately. The result shows the phosphorus composition in the coating increases and the crystallization peak of the DSC curve becomes lower as well as wider and the crystallization activation energy E reduses with the the increase of acid concentration in the solution, so E may indicate the stability of the coatings. The crystallization temperatuer Tc and heat of crystallization ΔH do not change regularly when pH changes. According to the kinetics study, the crystallization mechanism of the amorphous coatings may be expressed by Avrami-Erofeev equation(n=1). the kinetics equation is
dα/dT = Ae-E/RT(1- α)     

AuCu3熔体快速冷却过程中的键对与多面体

利用分子动力学模拟技术研究了由周期性边界条件控制的375个铜原子、125个金原子组成的金属间化合物AuCu3熔体的快速冷凝过程.利用双体分布函数、键对分析技术、多面体等方法详细考察了快速凝固条件下AuCu3中微观组团随温度的演化特点.结果表明,降温至700K左右时双体分布函数第二峰发生劈裂,液态AuCu3金属中产生了非晶态,非晶转变温度约为680K;AuCu3在向非晶转变的过程中,其微观结构组态具有选择性,其中缺陷多面体随温度变化最为剧烈,而hcp与fcc结构对温度不敏感.     

交联极性固定相非晶硅膜改性弹性玻璃毛细管气相色谱柱的研制

交联ＦＦＡＰ极性固定相非晶硅膜改性弹性玻璃毛细管气相色谱柱是一种新柱型，具有柱效高、化学惰性好、稳定性好、抗溶剂、抗腐蚀和耐高温等性能，本文报道了该新型色谱柱的制备及其性能研究。     

乙烯-丙烯酸共聚物非晶区结构和分子运动的固体核磁共振研究

利用固体高分辨1 3CCP MAS和变温固体质子宽线技术对乙烯 丙烯酸共聚物 (EAA)非晶区的结构和分子运动进行了研究 ,结果发现 ,非晶区中羧基之间可以形成氢键 ,其数量随着共聚物中丙烯酸共聚单体含量的增加而增加 ,使得共聚物中非晶区分子运动能力随非晶区相对含量的增加而减弱 ,这是一种与一般的乙烯共聚物相反的变化趋势 .通过交叉极化方法间接测量了非晶区中乙烯链段的1 H自旋 自旋弛豫时间 (T2 ) ,表明非晶区中乙烯链段的运动同样受到氢键的束缚 .随着温度的升高 ,羧基之间的氢键发生解离 ,非晶区的柔性增强     

AuCu3熔体快速冷却过程中的键对与多面体

Based on the FS(Finnis-Sinclair) many-body potential model, the rapid cooling process of a system, which consists of 375 Cu atoms and 125 Au atoms, controlled by period boundary condition was simulated. The dependence of pair distribution function of melten compound AuCu3 on the temperature under these conditions was researched. It can be concluded that the noncrystal exists under 700 K, and the liquid-glass transition temperature is approximately 680 K according to the Abraham′s method. Furthermore, the feature of version of cluster in melten AuCu3 was investigated by Honeycutt pair analysis technique. It is demonstrated that the structural configuration in melten AuCu3 has remarkable variation during the formation of noncrystal according to the relationship between the bonded pairs and polyhedron and temperatures. The defective polyhedra in liquid AuCu3 have greatest changes accompanying the changing temperatures.