铸造用聚氨酯粘合剂组份Ⅰ酚醛树脂合成研究

铸造用的聚氨酯粘合剂组合物，主要由极性和非极性溶剂溶解的酚醛树脂组份I和非极性溶剂稀释的聚异氰酸酯组份Ⅱ组成。组份Ⅰ酚醛树脂结构、性能是决定该类粘合剂性能因素之一。本文对铸造用聚氨酯粘合剂的组份Ⅰ酚醛树脂结构、合成方法、原料材料选择等问题进行了分析讨论，为铸造用聚氨酯粘合剂的组份Ⅰ的制备和苯醚型酚醛树脂的合成提供一些参考。     

固体火焰与燃烧合成的基本概念及应用

对固体火焰与燃烧合成的基本概念与应用进行了综合评述，尽可能对固体火焰与气体火焰的特点进行比较，并对燃烧合成与其它传统工艺进行了比较。     

Preparation and Characterization of K_n|Ga(H_2O)MW_(11)O_(39)|·xH_2O

In this paper the heteropoly complexes K_n[Ga(H_20)MW_(11)O_39)]·xH_20 [M=Cu(Ⅱ), Co(Ⅱ), Cr(Ⅲ),Fe(Ⅲ), Mn(Ⅳ)] have been prepared in this laboratory firstly. The products were characterized by chemicalanalysis, ionexchange, IR, UV and X-ray powder diffraction.     

酸,碱两步催化合成聚钛硅氧烷铝基材涂膜的研究

聚钛硅氧烷底涂液是用Ｎ－［３－（三乙氧基硅烷］－４，５二羟咪唑和钛烷氧化物在甲醇、水溶液中以酸和碱两步催化水解、缩聚而成，该底涂液涂复在铝基材上经热解，脱碳化物转化成准无机耐蚀涂膜，下述因素对涂膜的耐蚀性起到了重要作用：（１）涂膜的厚热解温度；（２）膜与基材之间的界面结合；（３）介质对涂膜的润湿性。     

8-羟基喹啉-N-氧化物和5,7-二硝基-8-羟基喹啉-N-氧化物与Au(Ⅲ)、Pd(Ⅱ)的配合物之合成

合成4种标题配合物,用元素分析、红外和紫外光谱、摩尔电导、核磁共振氢谱、荧光光谱及X射线粉末衍射物相分析研究了它们的组成和性质及其结构。按结构将配合物分为两类,一是含氢键的离子缔合物;一是含金属—氧键的螯环型配合物。     

Wet corrosion of nitride PVD films in supercritical solutions

Nitride TiN, TiAlN and CrN films exhibit a high performance with respect to steel corrosion protection in supercritical water. However, for practical applications their corrosion resistance in water solutions is more important. Wet corrosion of nitride PVD films in neutral, acid and alkaline supercritical solutions was studied. The highest stability of the films was revealed in neutral sodium chloride and alkaline CH₃NH₂ solutions. In the latter case regular cubic spinel crystals were formed on the surface of TiAlN films. Acidic solutions destroy nitride films due to growth of corrosion products beneath the coating layer.     

新型超高相对分子量阳离子聚丙烯酰胺的合成

研究了由过硫酸铵、甲醛次硫酸氢钠、功能性单体 DA及其它助剂组成的低温复合引发体系引发丙烯酰氧乙基三甲基氯化铵 (AETMAC)与丙烯酰胺 (AM)水溶液绝热聚合。考察了影响共聚物特性黏数[η]的因素 :单体浓度 1 8%～ 3 2 % ,引发剂浓度 (9～ 3 0 ) mg/L ,功能单体浓度 (2 .9～ 2 3 .2 )× 1 0 - 3mol/L。由该低温复合引发体系在适宜条件下引发 AETMAC/AM共聚合 ,可得到溶解性能很好、阳离子度为 1 0 %～70 % ,分子量 (1～ 2 )× 1 0 7的 P(AETMAC-AM)干粉。     

Synthesis and Physical Properties of EOE and EEO,Triacylglycerols Containing Elaidic and Oleic Fatty Acids

Symmetrical and non-symmetrical triacylglycerols (TAG) containing oleic (O; 9c-18:1) and elaidic (E; 9t-18:1) acids were required as part of a study relating the physical characteristics and functionality of trans-containing TAG with the mouth feel, taste characteristics and related characteristics desired by consumers in frying oils and pastries. To replace the trans isomers in frying oils—a significant part of frying oils prepared by partial hydrogenation of vegetable oils—without loss of the sensory properties desired by consumers, required the initiation of a study relating the structure of trans-containing TAG with such characteristics as melting range, drop points, and other crystalline properties. Elaidic acid was esterified to trielaidin (EEE), and the EEE partially converted (glycerol/p-toluenesulfonic acid) to a mixture containing ca. 40% DAG (the 1,3- and 1,2-isomers). The DAG fraction was separated by silica gel chromatography, the 1,3-dielaidylglycerol (1,3EE-DAG) isomer isolated (structural purity >99%) by crystallization from acetone and esterified with oleic acid (O) to yield EOE. The 1(3)O-MAG was purchased commercially and esterified with E acid to prepare OEE. Both syntheses yielded multi-gram quantities of EOE and EEO, in 80–85% yields, and with structural purities >99%. Thus, by careful selection of the thermodynamically more-stable MAG or DAG precursors, the symmetrical EOE and non-symmetrical EEO isomers could be readily synthesized, and their drop point and melting point values determined. The 1- and 3- positions on the glycerol backbone of the MAG, DAG and TAG molecules are assumed to be equivalent.     

磷钨酸催化合成癸二酸二丁酯

磷钨酸作为癸二酸和正丁醇的酯化催化剂，性能优于硫酸。本文探讨并找到了其较好的反应条件，酯化率达99．5％。     

山梨酸正丁酯的合成研究

以山梨酸与正丁醇为原料,对甲苯磺酸为催化剂合成了山梨酸正丁酯,用乙酸丁酯作带水剂,4A分子筛作除水剂,酯化收率可达97.5%.