煤和改质剂在共混工艺中产生化学反应的验证

将煤和改质剂共混压制成煤塑料板材,以此为样品和未经加工的原料混合样(对照样)分别进行吡啶抽提、热失重试验和差热分析,并作比较。试验结果表明煤和改质剂在共混工艺中不仅是物理混合,而且发生了化学反应。     

基于PC的大屏幕立体投影与快速边缘拼接

针对当前显示技术成为虚拟环境系统追求高分辨率与高沉浸感的瓶颈,提出基于PC的大屏幕立体投影系统,实现虚拟环境的高分辨率及高沉浸感;该系统需要多台投影机进行投影,因此带来多投影机投影图像的配准与无缝拼接,提出一种快速边缘拼接技术,实现复杂场景漫游中的大屏幕立体投影多投影之间的无缝拼接。     

以“为人找书和为书找人”理念提高馆藏图书利用率

“为人找书和为书找人”是当今图书馆员的工作方法和服务理念。分析了“为人找书和为书找人”理念与提高馆藏图书利用率的关系,指出应把它融入图书馆工作的各个层面及全过程,加强图书馆员的服务意识,深化“为人找书和为书找人”理念,以提高馆藏图书利用率。     

晋宋时期玄言诗与山水诗的消长与融合

东晋刘宋时期,玄言诗和山水诗相继成为诗坛上星光闪耀的两种诗体。在二者相代的过程中,诗中庄老玄言与山光水色成分的比重与侧重点互有消长,最终实现初步的景理交融,其过程及结果成为后世文学强调“情景交融”的先声。     

Studies of the Rheological Behavior of Polypropylene/Polyamide-6 Blend by Capillary Rheometer

The theological behavior of blend, e. g. polypropylene, PP, with polyamide - 6, PA6, has been investigated. Results show that this blend is a pseudo plastic fluid and the amount of PA6 seems to be a dominator to influence all theological properties. In addition to the expected influence by temperature generally for polymer, it has been found the amount of PA6 is valid in a range, e. g. 0 - 20% corresponding to the PP amount, i. e. in this range, the larger the PA6 added, the larger is the non-Newtonian index, n, and this is obviously especially for PP/PA6 blend with the high shear stress.     

尼龙-1010及其与聚对苯甲酰胺共混物的结晶行为

采用偏光显微镜和差示扫描量热法研究了文题内容。结果表明,尼龙-1010(Ⅰ)在150～175℃之间为球晶生长的最适宜温度。它的结晶动力学基本上符合Avrami方程,Avrami指数为2.7～3.8;结晶速率常数为10~1～10~2数量级。Ⅰ的熔融双峰是在DSC扫描过程中经历的连续熔化与再结晶过程中产生的。Ⅰ与聚对苯甲酰胺的共混物,由熔体进行结晶时都得不到完整的球晶,但结晶化温度降低。     

聚氯乙烯／三元共聚尼龙共混物的形态结构

采用乙烯-丙烯酸正丁酯-一氧化碳共聚物（EnABCO）及马来酸酐接枝乙烯-丙烯酸正丁酯-一氧化碳共聚物（EnABCO-g-MAH)两种增容剂对聚氯乙烯（PVC）/三元共聚尼龙（NT）共混物进行增容,得到了一类新型的PVC/NT共混物,用SEM,DMTA、DSC对共混物的形态结构,结晶情况进行了表征;对增容剂的增容机理和增容效果进行了探索与评价;结果表明：增容和未增容PVC/NT共混物都是典型的的两相体系;PVC/NT质量比在75/25～25/75的范围内NT均为连续相;共混物中EnABCO比EnABCO-g-MAH对PVC有更强的增塑作用,共混物有冷结晶现象,EnABCO增容共混物中的NT结晶能力比较弱。     

PET／ECDP／PEG共混体系相容性的研究

根据B.Schneier公式计算了PET／PEG共混体系△Hm值,推算了体系的相容性;利用调和方程和接触角的测定得到PET／PEG及PEG同PET／ECDP界面张力。     

One-bath Dyeing of Polyester/Wool Blend with Disperse Dyes

The role of auxiliary LAB as vehicle in dyeing polyester/ wool blends with disperse dyes is described. Dye exhaustion and bonding on polyester/wool samples are studied under different experimental conditions - the LAB amount, the temperature and pH value - to achieve optimum conditions. The results are compared with those obtained with and without conventional dyeing auxiliary products. Although dye exhaustion is higher in the presence of commercial carriers, the dye bonded increases markedly in the presence of auxiliary LAB in both fibers. The role played by auxiliary LAB in polyester/wool blend dyeing can provide a new method for this process.     

热塑性聚氨酯-聚酰亚胺合金的制备及其性质研究

众所周知,聚氨酯弹性体（ＰＵ）具有橡胶和塑料的优良性能,它们耐磨、耐低温、柔韧性好,目前已发展成为一类很重要的工程材料［１,２］．然而由于用普通方法制备的聚氨酯耐高温性能不好,当它们加热到８０～９０℃时,一些实用力学性能,比如,强度、模量等都已消失,当加工温度达到２００℃时,聚氨酯材料将发生热降解．以上的缺点限制了聚氨酯弹性体的广泛使用．长期以来,如何提高聚氨酯材料的热稳定性已成为研究热点．一般常用方法是在聚氨酯化学结构中引入热稳定性的链段．聚酰亚胺（ＰＩ）作为一类综合性能优越的芳香族耐高温聚合…