丙烯酸(r1)-丙烯酸钠(r2)共聚竞聚率的研究

丙烯酸（ｒ１）－丙烯酸钠（ｒ２）共聚反应，在较低转化率（〈１０％）的条件下，依据特征峰的差异，采用红外光谱法确定共聚组成，然后以３种不同计算方法计算两组分竞聚率。经过研究，确定竞聚率ｒ１＝０．８７８，ｒ２＝０．５６９。     

丙烯酸酯光固化改性树脂及其应用研究进展

丙烯酸酯分子结构中含有不同的活性交联单元,且丙烯酸类树脂具有高的极性、良好的黏合强度和生物相容性等优点,在医用黏合剂、涂料和皮革等方面已被广泛使用。介绍了几种光固化丙烯酸酯类树脂的聚合改性方法,包括自由基溶液紫外光固化、界面反应光固化、原子转移自由基聚合、乳液光接枝聚合等。探讨了双酚A环氧丙烯酸类树脂、氨基丙烯酸类树脂和羟基丙烯酸类树脂的光固化及其性能与应用,并对丙烯酸酯类树脂材料今后的发展方向进行了展望。     

丙烯酸树脂的制备及其在涂料中的应用与研究现状

综述了丙烯酸树脂及其涂料制备技术的研究现状及进展。     

SL型农田袜用粘合剂的研制

通过使用复合型乳化剂，成功地剂备了ＳＬ型农田袜用粘合剂，并确定了配方和生产工艺，该粘合剂性能优良，完全能满足农田袜生产的需求。     

丙烯酸羟丙酯的合成与应用

丙烯酸羟丙酯是重要精细化工产品。文章介绍了由环氧丙烷与丙烯酸反应的合成工艺条件，着重讨论了催化剂品种及选择。同时对丙烯酸羟丙酯应用领域作了简单介绍。     

丙烯酸树脂及其涂料

0302001残留单体含量低的丙烯酸乳液及其制备和含该乳液的涂料:JP2002一2 1 2 207旧本专利公开]/日本:NIPPon Paint Co。Ltd.(Hisawatari,W血kana等)一2002.7.31一6页一2001/7 445(2001.1.16):IPCC08F2/24 将含(甲基)丙烯酸C4 18烷基醋的烯属不饱和单体混合物在自由基引发剂存在下聚合,然后在含有机过氧化物的氧化还原引发剂存在下聚合,制得(甲基)丙烯酸C4一!8烷基醋残量(0.1%的丙烯酸乳液。含该丙烯酸乳液且挥发分含量低的涂料适用于建筑内部结构等。例如,将苯乙烯20刀份、甲基丙烯酸甲醋54份、丙烯酸2一乙基己醋69.0份和甲基丙烯…     

Orthophosphates and Diphosphates Containing Zinc and Copper and Zinc and Cobalt

Solid solutions of diphosphates of zinc and copper and of zinc and cobalt were synthesized from mixtures of pure diphosphates at temperatures up to 1000°C. Their X-ray diffractometry patterns varied continuously from one end member to the other. Solid solutions of orthophosphates of composition Zn_3−xCox(PO₄)2, with x = 0.4–1.6, were formed at temperatures up to 950°C; all exhibited the structure of γ-Zn₃(PO₄)2. Solid solutions of orthophosphates of composition Zn_3−xCu_x(PO₄)2 exhibited more-complex behavior. At 1000°C and copper contents of 20–80 mol%, a phase that is related to Cu₃(PO₄)2, termed here the "ε-phase," predominated. At 850°–950°C and in the region from 20 mol% to ∼33 mol% of copper, the solid solutions (the "η-phase") adopted the structure of graftonite. At 800°–900°C and 10–15 mol% of copper, the solid solutions exhibited a new structure (the "δ-phase"), which we found to be related to the mineral sarcopside. At temperatures 950°C, the solutions that contained 5–15 mol% of copper (the "β-phase") had the structure of β-Zn₃(PO₄)2, whereas at 800°–850°C, solutions with 5 mol% of copper (the "-phase") exhibited the structure of γ-Zn₃(PO₄)2. Attempts to synthesize Cu⁺ZnPO₄ and Cu⁺Cu²⁺Zn₃(PO₄)3 were unsuccessful.     

油气储运系统中油气的回收及腐蚀与防护问题

油气储运系统已经与保障国家经济的发展息息相关,介绍了油气储运系统中油气回收问题及腐蚀与防护问题,并提出了相应的解决措施。     

Gemini型表面活性剂结构性能与应用

Gemini型表面活性剂的结构和性质与传统的表面活性剂有很大的不同,例如Gemini型表面活性剂可以视为两个普通表面活性剂在亲水基或者靠近亲水基处由连接基团通过化学键连接而成;Gemini表面活性剂的C20值和cmc值都比传统表面活性剂的值要低很多。着重介绍了Gemini型表面活性剂的特性,结构与表面活性的关系以及应用。     

油气集输处理工艺及工艺流程

为了提高油田的生产效率,设计最佳的油气集输处理的工艺流程,更好地完成油气水分离处理的任务。对油气集输工艺技术进行优化,发挥高效油气水分离处理设备的优势,提高油气水处理的质量,保证油气集输工艺顺利实施,获得最佳的油田产量外输。     

科技创新与钢铁科技进步

建设创新型国家是我们中华民族的历史责任。“自主创新、重点突破、支撑发展、引领未来”的16字方针应当成为我们未来创新活动的指南。建设创新型国家把自主创新放在首位,并提出了引领未来的高标准要求。钢铁科技创新必须突出重点,抓住创新成果产业化这个关键,支撑起行业和国民经济的发展。     

油气管道及储运设施安全保障技术发展现状及展望

相比已经完善丰富的开采和勘探技术,油气的运输以及储存却仍然存在不足之处。我国对能源安全提出更加严格要求的同时,对区域经济的发展规划也有足够重视。因此,保障油气管道的安全则成为了我国能源安全战略的重中之重。在阐释油气管道现阶段在储运安全保障技术发展状况的基础上,分析了现存的问题及解决问题的手段,并指出未来可能使用的目标策略,为今后研究者提供一定程度上的借鉴经验。     

石油与天然气地质与勘探开发措施

石油天然气的地质勘探开发目的是为了获得最佳的油气产能而进行的地质研究工作。石油天然气地质勘探工作具有非常重要的意义,通过地质勘探获得有价值的地层信息资料,对储层油气的显示进行评价和分析,确定具有工业开采价值,才能投入开发生产,为油田创造最佳的经济效益。     

膜的污染和劣化及其防治对策

较为系统地介绍了膜污染和劣化的定义和特点,因膜污染和劣化而造成的膜性能变化,以及如何预防、减少或清除膜污染和劣化的一些通用方法。     

Gel permeation and thin-layer chromatographic characterization and solution properties of butadiene and styrene homopolymers and copolymers

Gel permeation chromatographic (GPC) and thin-layer chromatographic (TLC) studies of polystyrene, polybutadienes (BR), and their copolymers (SBR) have been carried out. GPC primarily separates them on the basis of molecular size, and TLC, on the basis of composition. Methods of obtaining absolute molecular weight distributions for BR and SBR based upon variations of the Strasbourg Universal Calibration procedure are described. In particular, [η]–M relationships in both the GPC solvent (THF) and in a second solvent (toluene) were used; in addition, results of statistical mechanical calculations for \documentclass{article}\pagestyle{empty}\begin{document}$\overline {s^2 }$\end{document} (based on the assumption of negligible steric hindrance and freely rotating bonds) were applied. An experimental comparison of these methods was carried out, and use of the [η]–M relationships for both solvents was found to give satisfactory results. The predictions of the statistical theory were too low. A detailed study of polymer–solvent–gel interaction in the GPC unit was made through investigation of ternary phase equilibrium in the (polystyrene)–THF–(polymer) system. The polymers studied included BR and SBR with varying styrene contents. Experimental techniques for TLC separations of BR, SBR, and polystyrene according to the composition are described.