聚丙烯

A novel method is reported for mass separation of proteins, based on sodium dodecyl sulfate polyacrylamide gel electrophoresis.

报导了一种基于十二烷基硫酸钠聚丙烯酰胺凝胶电泳的新型蛋白质质量分离方法。

We found when the pH value of washing buffer was 7. 4, the first apex of curve corresponded the solution of purified IgG whose purification was identified with discontinuous on different concentration polyacrylamide electrophoresis.

实验中发现洗脱液pH值为7.4时洗脱第一峰即为纯化的IgG，用不连续缓冲系统聚丙烯酰胺凝胶浓度梯度电泳鉴定层析洗脱下的IgG达到电泳纯。

It results in decreasing in spherulite size,increasing in crystalline density,and eventually causing an improvement of optical properties.

雾度和透明率数据表明，成核PP的光学性能和透明率有所改善，在PP中添加0.3％成核剂时，聚丙烯的改性效果最好。

Yuantai Methyl Cellulose Company Limited is a professional supplier of methyl cellulose, polypropylene staple fiber, and polyester fiber with German technology and production line.

File=28901元泰木质纤维有限公司是专业从事木质纤维，聚丙烯短纤维的开发与生产的合资公司，拥有专业的德国技术，一流的生产设备。

Different surface modifiers (benzoate, stearine acid and organosilane) were used to treat plant cellulose/polypropylene composite systems. Effects of surface treatment agents on mechanical properties ( tensile strength and impact strength) were studied.

采用不同的表面改性剂(苯甲酸、硬脂酸、有机硅烷)对植物纤维/聚丙烯复合体系进行了处理，研究了表面改性剂对体系力学性能的影响规律，探讨了复合材料界面粘接机理，分析了力学性能的变化规律。

The material can be used as ultraviolet light absorbent as polypropylene, polycarbonate, vinyl cyanide-butadiene styrol copolymer and polyurethane.

该超分子插层结构材料可作为紫外光吸收剂用作如聚丙烯、聚碳酸酯、丙烯氰-丁二烯-苯乙烯共聚物以及聚氨酯等易光氧降解树脂的耐光老化添加剂。

The DSC results showed that calcium carbonate,sodium benzoate and terephthalic acid were the nucleating agents of polypropylene with high thermal stability of the nucleating effect,while the thermal stability of nucleating effect of pimelic acid,suberic acid,azelaic acid,and the two component nucleating agents suberic acid/calcium carbonate and azelaic acid/calcium carbonate were poor.

研究了碳酸钙、苯甲酸钠、对苯二甲酸和脂肪二元酸：庚二酸、辛二酸、壬二酸及其与碳酸钙组成的双组分成核剂对聚丙烯结晶成核效果的热稳定性。结果表明，高熔点物质碳酸钙、对苯二甲酸、苯甲酸钠的成核效果的热稳定性高，而脂肪二元酸的成核热稳定性低。庚二酸与碳酸钙组成的双组分成核剂的成核热稳定性高，但辛二酸、壬二酸与碳酸钙组成的双组分成核剂的成核热稳定性没有得到改善。

The DSC results showed that calcium carbonate,sodium benzoate and terephthalic acid were the nucleating agents of polypropylene with high thermal stability of the nucleating effect,while the thermal stability of nucleating effect of pimelic acid,suberic acid,azelaic acid,and the two component nucleating agents suberic acid/calcium carbonate and azela...

研究了碳酸钙、苯甲酸钠、对苯二甲酸和脂肪二元酸：庚二酸、辛二酸、壬二酸及其与碳酸钙组成的双组分成核剂对聚丙烯结晶成核效果的热稳定性。

Aim To investigate the degradation of polypropylene in supercritical water and the degradation products.

目的 研究聚丙烯在超临界水中的降解过程及降解产物。

The new 20mm push-on closure, manufactured in yellow PP with a gloss finish, uses a tamper evident tear-off visor to the hinged flip-top to ensure product security and provides ideal drop-by-drop product dispensing, enabling the consumer to enhance the flavour of their food to taste.

新的20毫米推进式封闭，在黄色聚丙烯生产的表面光泽，使用篡改明显撕开遮阳的铰链翻盖，以确保产品安全，并提供理想的辍学拖放产品配药，使消费者提高他们的食品风味品尝。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。