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排序方式: 共有110条查询结果,搜索用时 15 毫秒
1.
Stephan Laske Wolfgang Ziegler Markus Kainer Johannes Wuerfel Clemens Holzer 《Polymer Engineering and Science》2015,55(12):2849-2858
The low thermal stability of polylactid acid (PLA) limits its use for various applications such as microwave‐ready dishes or hot beverage packaging. Furthermore, contained items might be damaged by occurring temperature peaks during transport (e.g., shipping container internal temperature exceeds 80°C) or other usage (e.g., car dashboard heated by sun). The aim of this study was the development of a PLA compound with an operating temperature above 100°C. Therefore, different formulations (e.g., stereocomplex of PLLA and PDLA, cross‐linking of PLA or use of commercial additives) were identified and compounds with varying conditions produced and tested regarding their thermal and mechanical properties. The results showed clearly possible routes for improving the thermal properties of PLA. Using such compounds respectively processing routes and additives helps to overcome one of the most significant problems when using PLA. The higher operating temperature of this biopolymer will lead to a wider field of application and will avoid shipping hazards. POLYM. ENG. SCI., 55:2849–2858, 2015. © 2015 Society of Plastics Engineers 相似文献
2.
Randy S. Beals Cam Tissington Xinmin Zhang Karl Kainer Joe Petrillo Mark Verbrugge Mihriban Pekguleryuz 《JOM Journal of the Minerals, Metals and Materials Society》2007,59(8):39-42
The magnesium industry is experiencing dramatic growth, due in part to the demands of the automotive industry to improve fuel
economy and emissions. As a result, the TMS annual magnesium symposium is one of the fastest-growing subject areas at TMS.
In addition, TMS is recognized as the global light metals community’s preeminent forum for the presentation of magnesium science
and technological issues. As a focal point of the 2007 TMS Annual Meeting in Orlando, Florida, the TMS Magnesium Committee
held its first plenary session with expert representatives from around the world. In order to address the surge in magnesium
technology in recent years, the TMS Magnesium Globalization plenary session included a variety of subjects that ranged from
economic to technical. 相似文献
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The reduction of nitric oxide with ammonia on an unsupported iron oxide catalyst has been studied in a continuous-flow recycle reactor using simulated flue gas. The responses of the employed reactor system to step and pulse inputs of tracer indicate that the system could be regarded as a continuous stirred tank reactor (CSTR). Preliminary tests were carried out to determine the effect of temperature and particle size on the measured reaction rates. Additional experiments were performed in order to study the influence of oxygen and water concentration on these rates. A gas chromatographic system has been developed to analyze the gas components NO, N2O, NO2, NH3, H2O, O2, CO2 and N2. In addition, the concentrations of NO and NO2 were measured with a nondisperse infrared (NDUV/NDIR) analyzer. 相似文献
7.
G. B. Kainer 《Measurement Techniques》1996,39(4):366-368
This article presents a fundamentally new method for controlling the position of an object in three-dimensional space by using
a microinterferometer. This method assures high accuracy and efficiency. The method can be used for verifying accuracy of
contact gauges in position-measuring machinery.
Translated from Izmeritel'naya Tekhnika, No. 4, pp. 17–18, April, 1996. 相似文献
8.
R. González-Martínez 《金属学报(英文版)》2007,20(4):235-240
The effect of isochronal heat treatments for 1h on variation of damping, hardness and microstructural change of the magnesium wrought alloy AZ61 was investigated. Damping and hardness behaviour could be attributed to the evolution of precipitation process. The influence of precipitation on damping behaviour was explained in the framework of the dislocation string model of Granato and Lücke. 相似文献
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G. B. Kainer 《Measurement Techniques》2008,51(12):1262-1268
New measurement methods and measurement instrumentation with resolution of 0.1 nm are developed that make it possible to achieve
objective reliable estimation of the influence that deformations exert on the accuracy with which precision parts are monitored
in the nanometric range and to determine the parameters of these deformations.
Translated from Izmeritel’naya Tekhnika, No. 12, pp. 6–10, December, 2008. 相似文献