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《化学与粘合》1995,(2)
本文考察了从Pyrex玻璃上剥离后的各种丙烯酸酯胶粘剂聚合物的形态结构.丙烯酸酯聚合物(丙烯酸-2-乙基已酯(2EHA)-丙烯酸(AA)-醋酸乙烯酯(VAc)共聚物)P(2EHA-AA-VAc)的组成比为:2EHA/AA/VAc=100/0/0(EEHA0000),95/5/0(PEHA0500),92/8/0(FEHA0800)和85/5/10(PEHA0510)(mol%).PEHA0000的剥离类型为伸长的锯齿状;而PEHA0500和PEHA0800剥离后在锯齿的边缘呈特征的分支带PEHA0510剥离形态呈有规则的锯齿状.用动态热力学分析方法,表面张力试验法和荧光探测技术探测了不同类型丙烯酸胶粘剂聚合物的剥离形态.关键词 相似文献
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采用比较研究的方法,探讨了AA·HPA,AA·AES、MA·AA及PAA四种聚电解质在不同浓度,PH值、Ca^2+浓度、PO4^3-浓度、温度及恒温时间对聚电聚质阻垢率的影响。研究结果表明,AA·HPA和AA·AES共聚物具有良好的的阻磷酸钙垢性能、增加聚电解质中羟基含量将降低阻磷酸钙垢的效果。 相似文献
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本文介绍了以顺丁烯二酸酐(MA)、丙烯酸(AA)、醋酸乙烯酯(VA)为单体合成的新型阻垢剂MA-AA-VA共聚物,是一种对BaSO4垢的优良阻垢剂,并确定了合成共聚物的最佳反应时间,反应温度和单体配比。 相似文献
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采用过氧化预辐射法将生产高分子特效膜残留下的废苯乙烯(St)与聚丙烯酸丁酯-丙烯酸(PBA-AA)接枝,制得PBA-AA/St接枝共聚物。比较了辐射法和化学法所制接枝共聚物的粘接性能,考察了St含量、丙烯酸丁酯(BA)/AA共聚物特性粘度、AA用量、BA和St预辐射剂量对接枝共聚物粘接性能的影响。结果表明,采用辐射法所制接枝共聚物的粘接性能优于化学法所制接枝共聚物的粘接性能;废St比纯St效果好;当St含量为33%、BA/AA共聚物特性粘度适中、AA用量为5.5份(BA用量固定为100份)、BA预辐射剂量为16.0kGy、St预辐射剂量为32.0kGy时,制得的接枝共聚物的粘接性能最为理想 相似文献
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低相对分子质量AMPS/AA二元共聚物的合成及性能研究 总被引:6,自引:0,他引:6
以2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、丙烯酸(AA)为原料合成了2种低相对分子质量AMPS/AA二元共聚物;分别评价了共聚物用工业循环冷却水阻垢剂、钻井液降粘剂的性能。 相似文献
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随着社会经济的高速发展 ,中国的室内设计也得到了快速发展。而作为室内空间的一部分 ,陶瓷的设计领域出现明显的滞后。本文对陶瓷设计在新的时代如何适应社会需求 ,如何与现代室内设计的发展趋势相适应进行了分析 相似文献
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浅析优化工业建筑设计与造价控制 总被引:3,自引:0,他引:3
分别从总平面设计、工艺设计和建筑设计方面论述了工业建筑设计中优化设计方案、选择合理的建筑结构和建筑材料对有效降低工程造价的实际意义。 相似文献
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Color comprises both subjective and objective aspects within its contextual nature. Research on color design tends to explore this seemingly contradictory concerns from theoretical point of view, as well as architectural and design practice. The aim of this study was to observe subjective, intuitive or heuristic and objective, knowledge‐based or analytical attitudes toward color in design education. In the study 84 introductory design students were surveyed progressively to understand their color decision criteria after completion of three 2‐dimensional colored exercises, specific in terms of color education. Students' responses to open‐ended questions were coded according to the 5 categories, under 2 decision making processes derived from the literature; heuristic approach: preferential and symbolic criteria, and analytic reasoning: formal, thematic, and systematic criteria. A distinction between associative and emotional aspects of symbolic criteria was also revealed by the data analysis. The findings showed a shift from heuristic responses to analytic reasoning, as expected. Additionally, it is also investigated that students not only used heuristic approaches but also analytical components (formal and systematic) of color decision making in varying degrees as well, even before any color subjects covered. Thematic color decisions became a major part of the students' design considerations upon completion of color subjects. The observed increase in the number of color criteria interrelated by the students' among almost all categories explicated a complex decision making process particularly in color design and education. These findings were expected to lead to some further understanding in color decision making in design. 相似文献
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大型湿法磷石膏堆场设计概要 总被引:2,自引:2,他引:0
针对大型、山谷型湿法磷石膏堆场,提出了磷石膏堆场设计流程,把磷石膏堆场本体设计内容概括性总结为5大部分,并阐述了各部分之间的相互关系及堆场设计要点。 相似文献