聚丙烯

The results showed reasonable crosslinked PP was benefit to the improvement of the cell structure, and the addition of nucleator as nucleating sites could increase the cell density.

研究表明，适度交联的聚丙烯有利于改善泡孔的结构，加入的纳米碳酸钙作为异相成核点，能够提高制品的泡孔密度。

Isothermal crystalline morphology of isotactic polypropylene with clarifying nucleator - TM-3 was observed by polarized light microscope.

利用偏光显微镜观察了等规聚丙烯在透明成核剂TM-3作用下的等温结晶形态，并与普通成核剂苯甲酸钠的影响作了对比。

Polypropylene ;β form nucleator ; mechanical properties ; crystallinity ; structure shape

聚丙烯；β成核剂；力学性能；结晶性能；结构形态

This paper has mainly summarize research and application actuality of high numerator PAM in all the world, simple introduce polymerizing technology and compared with differ producing method.

本文概述了高分子聚丙烯酰胺在国内外的研究和生产应用现状，简单介绍了国内外现有的聚合技术和聚合工艺，并对不同的生产方法、工艺流程进行了比较。

Most of the compatibilizers in using with polypropylene extrusion grafting are usually poisonous, unsteady, odoriferous and big loss of strength of the PP resin. In view of these defects,a kind of high activity compatilizer was prepared with the method of bulk graft copolymerization.

本文针对目前聚丙烯挤出接枝相容剂毒性大、气味大、质量不稳定、强度损失大等问题，采用本体接枝共聚方法，研制一种高活性PP相容剂。

These fabrics are made of such fibers as polypropylene, olefin, polyester, nylon, and acrylic.

这些织物使用的纤维有：聚丙烯、烯烃、涤纶、尼龙以及丙烯腈纤维。

These fabrics are made of such fibers as polypropylene , olefin, polyester, nylon, and acrylic.

这些织物使用的纤维有：聚丙烯、烯烃、涤纶、尼龙以及丙烯膊纤维。

PP was taking as basic material,and blended with ethylene propylene rubberby means of melt blending to prepare easy openable infusion bottle-cover materials,in which a certain amount of LDPE and plasticizer was added to improve the compatibility and mechanical properties of the blend.

以聚丙烯为基材，与二元乙丙橡胶用熔融共混的方法，制备易开启式输液瓶外盖用料，并加入一定量的低密度聚乙烯和增塑剂以改善体系相容性和力学性能，讨论了增塑剂邻苯二甲酸二辛酯、乙酰柠檬酸三正丁酯及丙三醇对共混体系力学性能的影响。

The factors such as overhigh ethylene content in product, too fast operation for grade changeover and low production load when starting grade changeover usually caused a blockage in belt connection between loop reactors in polypropylene plant.

产品中乙烯含量过高、转产控制过快以及转产时负荷控制太低等都会导致聚丙烯装置带连接堵塞。

This paper has studied the relationship between the peeling strength and the relative amount of oxygen - containing groups produced on the surfaces of propylene homopolymer, ethylene - propylene block copolymer and random copolymer when ozonization was used to improve the coating properties of PP surface.

研究了用臭氧氧化法对聚丙烯表面进行涂装性改良时，丙烯均聚物、乙烯—丙烯嵌段共聚物及无规共聚物表面上含氧官能团相对生成量和涂膜剥离强度之间的关系。

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。