this study investigates the mechanical behaviour of polyester fibres over a range of temperatures by the use of a number of experimental techniques including tensile, creep and fatigue tests.the influences of temperature on the different mechanical properties is investigated with particular emphasise on the loss of rigidity and reduction of creep and fatigue lifetimes.A precise description of the stress /strain curves of the fibres highlights the effects with respect to the glass transition temperature. The fatigue failure process is precisely detailed and changes, at high temperatures, to the classical fracture morphology observations made of single fibres and yarns provides valuable information about the interpretation of result obtained with single fibre test to fibre assemblies

In this work the unsteady-state contact angle at the interface between polymer melt and carbon black (CB) was measured. The transition of contact angle from an unsteady to a steady state can be divided into three stages, the unsteady thermo-stage, the wetting stage, and the reach of equilibrium contact angle. Subsequently, three critical indices, the unsteady heat-transfer period t0, the retardation time τ, and the contact angle at equilibrium state A∞ are defined herein. The decrease in contact angle against time can be simulated by an exponential decay that involves these three critical indices. Molten polypropylene (PP) and polystyrene (PS) have the smallest equilibrium angle A∞, followed by polybutylene terephthalate (PBT), and polymethyl methacrylate (PMMA) has the greatest angle. Interestingly, this order is strongly related to the solubility parameter of each polymer. The CB coated with sulfonated polyester slightly changes the equilibrium angle A∞, but drastically reduces the retardation time τ for PP and PBT. This finding indicates that the CB, whose surface is modified by sulfonated polyester, can effectively reduce the compounding time of PP and polyester. Experimental results also reveal that reduce compact density slightly increases A∞ but barely affects τ. Furthermore, modifying PS with polybutadiene particles yields a high contact angle A∞ and a low τ value.

德国Goettfert（高特福）公司于1962年制造出世界上第一台毛细管流变仪。四十多年来，其设计制造的熔融指数仪系列的世界用户占有率最高，它的优异的加工精度和设计理念使得仪器的使用寿命最长 世界用户情况： 几乎所有世界著名的公司或研究单位都有Goettfert的熔融指数仪，如杜邦、拜耳、DOW化学、巴斯夫、GE、壳牌、大众、塞科等等，从第一台熔融指数仪到现在，约有几千台仪器在使用。 国内用户情况： 几乎所有国内的石化企业和研究单位都有Goettfert的产品，如北京石油化工研究院、茂名石化、上海塞科、南京扬子石化、兰州石化、大庆石化、GE广州、巴斯夫（上海）公司、燕山石化、上海富士施乐、齐鲁石化等等。

研究炭黑和自拨黑料强榕噩丁辈橡肢( SSBR ) 胎面脏的抗温晴性能，井分析抗湿惰性能的影响因章. 结果量明，在一定温度和速度范围内，自提黑补强SSBR 胎面胶抗湿晴性能优于炭黑补强SSBR 胎面肢z 仅果用动在粘弹性能理征胎面肢的抗湿滑佳能是不完善的，抗湿惰性盹量温度、速度和跤料硬度等的嚣响，是润情作用和动在帖弹性能等共同作用的结果.

摘要:研究炭黑或自炭鼎补强溶噩丁荤幢胶(SSBR) 和乳罩丁苯幢胶(ESBR) 胎面肢的性能. 结果表明.SSBR 与白棋嚣的冉面作用强于ESBR ，当罪用自炭照补强时， SSBR 硫化腔的物理性能优于ESBR. 而罪用提黯补强时.SSBR硫化肢的物理性能无明显优势B 与炭黑补强SBR 硫化被相比.自炭黑补强SBR 硫化腔的抗湿滑性能按好，滚曲阻力较低，但耐磨性能辍盏，其中自炭黑补强SSBR 硫化肢的抗湿晴性能最突出.

Abstract:In practical rubber processing the compounds will be subjectedto high shear rates. Hence in order to optimize processing con-ditions and also to guarantee a constant quality of the com-pounds it''s a mus! to lest processibility of rubber compounds inthe shear rate range of practical processing. Processibility ofrubber compounds is predominantly determined by its viscositythat''s balanced by two effects; viscosity of these materials de-creases drastically with increasing shear rate (pseudoplasticity)hut increases markedly with the onset and development of cur-ing. The rheovulkameter has been developped especially to takecare of these effects and allowing to measure easily and fastprocessibility of rubber compounds under conditions of practicalprocessing. It can be used like a capillary rheometer hut like aninjection molding tester as weil. Rheovulkameter tests given in-formation about both: j/owing (Rheo-) and curing (Vulkameter)of rubber compounds and other curing systems, too.