查询词典 polypropylene

The low isotactic polypropylene grafted by MAH in the presence of St as com-onomer was prepared by solution reaction.

低等规聚丙烯是由等规立构和间规立构组成的嵌段共聚物，具有低的结晶性能、良好的粘接性和加工性能，在胶粘剂领域有着广阔的应用前景。

Experiments were conducted to evaluate the influence of the extrusion temperature between 45℃and 105℃ on the structure and properties of isotactic polypropylene after equal channel angular extrusion.

在45℃至105℃挤压温度范围内对等规聚丙烯进行等通道转角挤压，研究了挤压温度对iPP结构和性能的影响。

Crystallization behavior of isotactic polypropylene were studied and observed by polarizing microscope,and also compared to that of PP/MMT composites.

采用偏光显微镜对全同立构聚丙烯等温结晶行为进行系统的研究，并与聚丙烯/蒙脱土复合材料的结晶行为进行比较。

A study is presented concerning the three different structural levels of isotactic polypropylene.

本文应用光学显微镜，扫描和透射电子显微镜从三种不同层次的结构水平上研究了α和β两种晶型的全同立构聚丙烯的球晶和晶片形态结构，特别是应用四氧化钌染色技术直接观察到两种不同晶型聚丙烯球晶中单独分离的晶片形态。

The results showed that the isotactic index of products using this process can satisfy quality requirements perfectly, the cost of polypropylene is reduced obviously and good benefits are achieve

实施结果表明，采用最佳投用方案生产的各牌号产品等规指数完全满足产品质量要求范围，明显地降低了聚丙烯的生产成本，取得了良好经济效益。

Progress of recent studies on the deformation mechanism for spherulites of isotactic polypropylene in the uniaxial and biaxial orientation process was introduced.

介绍了近来国内外对单向、双向拉伸过程中全同立构聚丙烯晶体内部球晶形变机理的研究进展。

The structure of chlorinated isotactic polypropylene was analyzed by DSC,IR,and 1H-NMR.

借助DS C，I R，1 H－NMR 方法对搅拌式固相氯化制备的氯化等规聚丙烯的宏观氯原子分布和微观氯原子分布进行了分析。

In other cases, aramid fiber or polypropylene might be considered over aluminum or Kraft paper.

其他方面，纤维、聚丙烯相对于铝、牛皮纸，纤维、聚丙烯的功能材料，将会成为我们的首选。

The net cement with bentonite can form hydrogen key which can improve the felt of the systematic and are wail for eventual strength; The main mechanism of J-85 accelerator to accelerate concrete coagulating are in alkalescence condition to make aluminate and gypsum link and block the building of calcium and aluminium sulphate around cement granule; Polypropylene acid can improve early strength of cement through altering the thickness of hydroxide in cement grout.

添加膨润土后的水泥净浆中形成了氢键，提高了体系的粘结性，对后期强度发展有利； J-85速凝剂加速混凝土凝结的主要机理就是在碱性条件下，使铝酸盐和石膏结合，阻碍水泥颗粒周围的硫铝酸钙即钙钒石的生成，从而使水泥迅速凝结；聚丙烯酸通过改变水泥浆体中羟基的浓度从而提高水泥试块初期强度。

Kaifeng non-woven Limited production operations near hundred kinds of products, mainly non-woven products, non-woven, long-fiber cloth, Ji flannel, embroidery cloth, Lighting cloth, needle cloth, fabric, at the end of cloth, blankets, etc.; Products Wide 36 "- 70", weight range 30g--1200g/m2, thickness 0.5mm-10mmm; the main raw material for polyester, acrylic, nylon, polypropylene, wool, etc.; the company can also according to the customer requirements of the design and development of special non-woven products.

凯丰无纺布有限公司生产经营近百余种产品，主要产品有不织布、无纺布、长纤布、戟绒布、绣花布、灯饰布、针刺布、基布、底布、毛毡等；产品宽幅这36&--70&，克重范围30g--1200g/m2，厚度0.5mm-10mmm；主要原料为涤纶、晴纶、锦纶、丙纶、羊毛等；公司还可根据客户的要求来设计和开发特殊不织布产品。

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。