聚甲醛

Polyoxymethylene is an important plastic with pretty good properties.

聚甲醛是一种高结晶性工程塑料，存在缺口敏感，冲击强度低、热稳定性差等缺点。

Current research status were summarized on toughened,wear-resistant and self-lubricated,thermal Stability,flame retardancy of polyoxymethylene and its application in PTC condcting material.

综述了聚甲醛的增韧、耐磨改性及改善POM热稳定性、耐候性、阻燃性能的研究成果，介绍了POM用作PTC导电材料的现状。

The rheological behavior and mechanical properties of polyoxymethylene/gel acrylonitrile-butadiene elastomer blends were investigated.

研究了聚甲醛／凝胶丁腈共聚弹性体共混物的熔体流动指数、高压毛细管流变行为和力学性能。

Project Contents: Polyoxymethylene is a hot type engineering plastic with high crystallinity, whose intensity, rigidity and hardness are similar to that of metal and which is mainly applied in electric appliance, engineering industry, automobile industry, building material and agriculture. The market prospect is great.

建设内容：聚甲醛是具有高结晶性质的热型性工程塑料，其强度、刚度、硬度类似金属，主要用于电子电器、机械工业、汽车工业、建材、农业等领域，市场前景广阔。

Being a kind of linear polymer with high crystallinity, polyoxymethylene is one of the best engineering plastics which crystallization behavior affects its other properties greatly.

聚甲醛是一种分子链中含有(CH2-O-)链节，没有侧链的高结晶性线性聚合物，综合性能优越的工程塑料，但缺口冲击强度较低，在某些方面不能满足工业化生产的需要。

Polyoxymethylene is an excellent thermoplastic for engineering with the nature of high crystallinity.

聚甲醛是具有高结晶性质的热型性工程塑料，其强度、刚度、硬度类似金属，主要用于电子电器、机械工业、汽车工业、建材、农业等领域，市场前景广阔。

Keywords polyoxymethylene;polytetrafluoroethylene;kaolin;friction and wear

聚甲醛；聚四氟乙烯；高岭土；摩擦磨损

The effects of injection temperature on the dispersion phase and mechanical properties of polyoxymethylene/thermoplastic polyurethane elaster blends were investigated.

研究了注塑温度对聚甲醛/热塑性聚氨酯弹性体共混物形态结构和力学性能的影响。实验结果表明，注塑温度影响POM基体相与TPU分散相的粘度比，195℃时两者粘度相当，在剪切流动过程中，TPU可在POM基体中形成条状分散相，可吸收较多的冲击能并阻止银纹的生长以及裂纹的产生，从而较大幅度提高共混物的缺口冲击强度

Then a numerical simulation calculation for Polyoxymethylene rotor's Intensity and stiffness is carried out based on ANSYS finite element software which may provides the basis for reliability design of eccentric and squirmy rotor pump.

基于ANSYS有限元软件，对非金属材料的聚甲醛转子强度、刚度进行数值模拟计算及分析。将为偏心蠕动式转子泵可靠性设计提供依据。

A three-dimensional model of rotor was built based on ANSYS, and analyzed with hexahedral SWEEP mesh method. Furthermore, a numerical simulation for Polyoxymethylene rotor's intensity and stiffness was carried out by using quasi-dynamic model method, and the stress and strain data of the rotor at six operating points were derived.

基于ANSYS有限元软件，建立了转子三维模型，并对其进行了六面体SWEEP网格划分；采用准动态模拟方法对非金属材料的聚甲醛转子强度、刚度进行数值模拟计算，得到了6个工况点中转子应力及变形数据。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。