硬聚氯乙烯排水管在建筑中的应用探讨

探讨硬聚氯乙烯排水管在实际工程中的应用及存在问题,并提出解决办法。     

单轴取向p型半导体CuI薄膜的制备与表征

在室温下用反应沉淀制取了CuI粉体,用溶液生长法在玻璃载体上制备了单轴取向p型半导体CuI薄膜。用XRD、SEM对样品进行了分析,结果表明,CuI粉体为片状结构;晶体薄膜是(111)晶面沿玻璃平行生长的单轴取向马赛克CuI薄膜。阐明了单轴取向CuI薄膜形成的机理。     

金刚石微粉复合镀膜的性能试验及其应用

对添加纳米级金刚石微粉的表面复合镀膜进行了性能试验和分析 ,结果表明 :镀层硬度达 10 0 0～115 0HV ,镀层晶粒致密 ,无方向性 ,抗剥落强度和耐磨性显著提高。金刚石微粉复合镀膜技术应用于实际生产可显著提高刀具和零件的使用寿命     

一种低温无硼无铅生料乳浊釉的研究

研究了一种无硼无铅生料乳浊釉，并讨论了影响乳浊度的一些因素     

The effect of film composition on the structure and mechanical properties of NiTi shape memory thin films

Shape memory NiTi-based thin films approximately 2 μm thick were deposited onto Si (100) substrates at room temperature by simultaneous DC magnetron sputter deposition from separate elemental Ni and Ti targets. The effect of composition on film structure, surface morphology, transformation temperature and mechanical behavior was studied using variable temperature X-ray diffraction, atomic force microscopy, electrical resistivity, and nanoindentation. The films showed the expected shape memory and superelasticity behavior corresponding to the different film compositions, comparable with bulk properties. The transformation from the low temperature martensitic phase to the high temperature parent phase takes place above room temperature in Ti-rich and near-equiatomic films, and below room temperature in Ni-rich films. Mechanical properties of films investigated at room temperature by a series of nanoindentations at mN loads (indentation depth < 200 nm) with a spherical indenter demonstrate superelasticity in Ni-rich material and martensitic deformation for Ti-rich and near-equiatomic compositions.     

Chitosan biobased and intelligent films: Monitoring pH variations

Many factors can influence the shelf-life product, such as pH, water activity, nutrient levels available oxygen, etc. Variations in food pH could occur due to microorganism growth and chemical reactions that may impact flavour, consistency and shelf-life. The objective of this paper was to obtain and characterize the fast pH-colourimetric indicator device, applying a simple manufacturing technique, using food grade and biodegradable materials. The intelligent film was based on natural compounds as chitosan and anthocyanin (pH-colourimetric indicator). Chitosan intelligent films (C-ATH, 2.0 g/100 g) were obtained incorporating anthocyanin (1.0 g/100 g) in matrix films. Initially, a dark violet colour was observed in chitosan films dried. When immersed in different pH buffers, the colour range of the films varied from pink (in acid pH) to bluish-green (in neutral pH) and to violet (in basic pH). The water solubility and water vapour transmission rate of C-ATH were decreased to 60% and 48%, respectively, as compared to control film (CF, without indicator). The mechanical properties such as tensile strength and rigidity were maintained, and the elongation at break was reduced to 47% compared to CF. The advantages of this system were the simple manufacturing process, biodegradability and usage of natural and safe compounds.     

气相防锈塑料薄膜的发展趋势及改进方向

从国内外主要生产企业和金属防锈包装领域客户需求两方面分析气相防锈塑料薄膜产品的发展趋势,介绍了国内气相防锈膜产品现状,提出未来技术发展改进方向。     

氢等离子体辅助固相晶化多晶硅薄膜的初步研究

提出一种氢等离子辅助固相晶化(hydrogen plasma assisted solid phase crystallization,H-SPC)多晶硅的新颖技术。这一晶化技术能够明显缩短晶化时间,同时有效钝化多晶硅薄膜的缺陷态。首先对氢等离子辅助SPC技术与传统SPC技术进行比较分析,进而研究了晶化过程中各种工艺条件对多晶硅晶化质量的影响并进行了物理机制的初步分析。     

Suppression of viewing angle dependence of organic light emitting diodes by introduction of circular polarizer with nanoporous polymer film

To improve poor viewing angle characteristics of top emission organic light emitting diodes (TEOLEDs) without any serious pixel blur phenomena, we applied a circular polarizer (CP) film modified by nanoporous polymer film (NPF). From this approach, we could improve the color shift significantly (Δu'v’ in CIE 1976 with viewing angle, from 0.0165 to 0.0114), and expand angular light emission distribution of off-axis by applying CP with NPF. We found that black color shift was little associated with NPF position change although black color was slightly faded tint by applying NPF, as like plasma display panel(PDP)’s off condition. Very interestingly, we found that the reflectance was not changed seriously whether NPF exists between glass encapsulation and CP or not. Besides, we investigated the pixel blur level when we applied different condition in encapsulation thickness and morphology of diffusing films. As a result, we found that the pixel blur phenomena can be significantly suppressed by applying thin encapsulation and NPF type diffuser film.