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Polylactic acid (PLA) of different molecular weights were synthesized by the direct condensation of lactic acid with modified gneiss as the catalyst, or with modified gneiss and stannous caprylate as the catalyst in the same reaction conditions and differ
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摘要以天然矿石－改性片麻岩为聚合反应的催化剂，通过直接缩聚方法制备了不同分子量的聚乳酸。 |
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Polymer Insulation Chests: Your Efficiency and Profits!
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波利马保温箱：您效率和利润的保证！ |
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Polymer brush has been applied in many aspects due to its remarkable characteristics in adsorption, adhesion, lubrication and wetting and it has shown great potential application in recent years.
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摘要聚合物刷由于在吸附、粘附、润滑以及润湿方面的显著特点，在许多方面都有重要的应用，显示了潜在而巨大的研究价值。 |
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Polymer composites filled with carbon black have the characteristics of positive temperature coefficient. The paper introduces the electric conduction mechanism and presents status and development trend of PTC polymer materials.
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摘要对聚合物基PTC材料的研究现状及导电机理进行概述，对最近提出的新理论，应力模型和双临界物理模型作详细介绍，并对该类材料的研究展望作详细论述。 |
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Polymer consumption is forecast to grow at a lower rate than that for unit growth, at 2.9 per cent per year, reflecting the fact that unit growth will be higher for beverage closures, which use smaller, lighter closures.
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塑料消费量预计比单位产品的增长速度低，年均2.9％，反映了一个事实，饮料瓶盖的单位增长速度更高，因为使用了更小、更轻的瓶盖。 |
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Polymer fibre is an ideal transfer medium for short distance communication network, which has a good development prospect in telecom, vehicle, industry control and internet field.
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摘要聚合物光纤是短距离通信网络的理想传输介质，在电信、交通工具、工业控制以及互联网领域发展前景良好。 |
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Polymer networks have been produced in a variety of liquid crystal phases in cells without surface treatment.
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摘要在灌装于未经表面处理的样品盒内处于不同状态的液晶中制备聚合体网络。 |
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Polymer networks have been produced in a variety of liquid crystal phases in cells without surface treatment.The liquid crystal/monomer mixtures are prepared using a ferroelectric liquid crystal and a diacrylate monomer.The polymerisation of the monomer i
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在灌装于未经表面处理的样品盒内处于不同状态的液晶中制备聚合体网络.液晶/单体混合物由铁电液晶和双丙烯酸单体制成.单体的聚合通过维持该混合物处在一定的液晶态的条件下经紫外线固化来完成.不同的液晶态可通过控制铁电液晶的温度来获得.双丙烯酸单体或聚合体网络的存在会导致铁电液晶载体的相变温度降低.通过光学显微镜可观察聚合体网络对铁电液晶分子组合排列的影响.结果发现:在某一液晶态中铁电液晶分子的组合排列可被在该液晶态中聚合而成的聚合体网络所稳定,双丙烯酸基聚合体网络的存在可改良铁电液晶的电光开关特性. |
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Polymers have had an edge over Kodak-type small-molecule devices in power efficiencies because the greater electronic conductivity of the polymer layers allows lower operating voltages.
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与柯达型的小分子装置相比，聚合物在用电效率上见长，由于聚合物层的导电率较高，所以操作电压可以较低。 |
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Polymorph Self. You assume a new form.
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变形自己：你得到一个新的外形。 |
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Polymorphic viruses that change each time the virus infects a new computer, somewhat like mutating biological viruses.
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多态类病毒在每次感染新计算机时变化，有些像变异生物病毒。 |
