聚丙烯

The flow properties of the polypropylene and polyethylene were studied using Archimedes spiral and square spiral melt fluidity test molds, which had the same shape of cross section but different cavity profiles, and then relationship between melt flow ratio and cavity profile was analyzed.

摘 要：对聚丙烯和聚乙烯 2种塑料在阿基米德螺旋线与方形螺旋线流动性测试模具中的流动性能进行研究，分析塑料流动比与型腔轮廓特征的关系；引入修正系数β，对流动比校核公式进行修正。

Methods:Argentum was used as antibacterial agent to prepare the argentation medical polypropylene mesh with chemistry liquid phase the meshes with Rochelle salt as reducing agent.

目的：制备镀银的医用聚丙烯网片，并检测其抗菌性和力学性能。

There is also used in the polypropylene fiber cement concrete and asphalt concrete for the polyester fibers and concrete interface agent.

另外还有用于水泥混凝土的聚丙烯纤维和用于沥青混凝土的聚脂纤维以及混凝土界面剂。

In vitro cleavage reaction was performed at 37℃ for 1h under the presence of Mg++. The cleavage product was analyzed by polyacrilamide gel electrophoresis. After autoradiography, the cleavage rate was counted by image analysis.

体外切割作用在Mg++的存在下，37℃反应1小时，进行聚丙烯酰胺凝胶电泳，放射自显影后经图像分析计算出切割率。

Benda Plastic Manufacturer of Nanhai,Foshan City,Guangdong Province,established in 1990 and later moved to Nanhai district,is a large enterprise specializhing in manfacture of plastic tubes,rods,ball valves and pipings,Our main end products include PTFE,PVC,PP,PE,Nylon and ABS tubes,valves and pipings and rods in more than 1000 types.

广东省佛山市南海奔达塑胶制品厂，创办于1990年（即原佛山市奔达塑胶有限公司，现迁往南海区）是一家专业生产塑胶管、棒材、阀门、管件的大型企业。主要产品材料有聚四氟乙烯、聚氯乙烯、聚丙烯、聚乙烯、尼龙、ABS等，品种规格有塑胶管、棒材、阀门、管件等几大系列，一千多个品种。

The results indicated that using benzophenone as photo-initiator, acrylamide as graft monomer, the polyacrylamide chain was grafted on the surface of membranes.

实验结果表明：用二苯甲酮作为引发剂，丙烯酰胺作为亲水性接枝单体，聚丙烯酰胺链可以被接枝到膜表面。

Monomeric acrylamide is a water-soluble, vinyl monomer that is used primarily to produce polyacrylamides which widely used as binding agent, thickening agent or bibulous in different industry such as wastewater treatment, petroleum extract, paper making, mining, medicine.

丙烯酰胺(Acrylamide，ACR)是一种水溶性的、乙烯基单体，主要用于生产聚丙烯酰胺，后者可作为良好的凝结、增稠、吸水剂，广泛用于废水处理、采油、造纸、纺织、皮革、采矿、医药等行业。

They use an extended bifilar thicker aluminum metallized high quality polypropylene film electrode construction type.

以铝金属化聚丙烯塑胶薄膜从两端重叠的电极构造。

Thirdly, crystallization behaviors of iPP/OMMT binary composite under shear field were investigated.

最后，研究了聚丙烯/有机改性蒙脱土复合材料在剪切场作用下的结晶行为，重点讨论了剪切场的作用。

We present a simple approach to determine the content of casein in crosslinked polyacylamide, i. e., protein molecules are complexed with copper ions by biuret reaction. The polymer containing proteins is cinerated at high temperature and then the residue is dissolved into nitric acid. Protein content is measured by determining concentration of copper ion in nitric acid solution using atomic absorption spectrum.

本文提出了一种在交联聚丙烯酰胺中测定酪蛋白的简便方法，即：利用双缩脲反应使蛋白质与铜离子络合，含蛋白质的聚合物在高温下灰化，残留物溶于硝酸，通过用原子吸收光谱测定硝酸溶液中的铜离子浓度来测量蛋白质的含量。

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。