挤出的

About 50 percent plastic formation use extrusion according to statistics, among this single screwer extrusion is considerably dominant.

据统计全世界50%左右的塑料是用挤出法来加工的，其中单螺杆挤出占有相当大的比例。

There are some basic chemicophysics problems about the foaming extrusion processing to be studied and clarified. The relationship between the formula, the processing condition, the apparatus parameter setting and the density, the physicomechanical properties, rheological property, were researched in detail in this artical, according to the extrusion process of PVC in the rheometer.

但在其低发泡挤出过程中尚有许多基本化学物理问题有待研究，本文利用PVC在流变仪的挤出加工，详细研究了相关配方、工艺条件、设备参数设定与发泡PVC制品的密度、物理机械性能以及加工流变性的关系。

The invention uses the method of the fusion and direct polymerization to prepare the carboxyl-terminated lactic acid prepolymer and then copolymerize with the aliphatic polycarbonate; then the reaction is done in the twin-screw extruder to screw out the extension chain and the good polylactic acid copolymer is made.

本发明采用熔融直接缩聚的方法制备出羧基封端的乳酸预聚物，接着再与脂肪族聚碳酸酯二元醇进行共聚，然后再在双螺杆挤出机中进行反应挤出扩链，制备性能良好的聚乳酸共聚物。

This system can approximately simulate the extruding process and calculate mass flow rate of an extruder, pressure and temperature distribution along the axis of screw, melt fluxing rate and energy dissipation.

本系统能近似地模拟挤出过程，并预测挤出机的质量流率、沿螺槽的压力和温度分布、固体床的分布，以及能量消耗。

A new view of reaction mechanism of polyethylene grafted maleic anhydride was put forward based on experiment results.(4) EDA has obvious inhibition ability to the cross-linking by-reaction of PE grafted MAH ,which can show MI increase and stabilization with the EDA increasing.

在PP接枝MAH的研究中发现：（1）PP/DCP反应挤出体系呈现典型的降解过程，表现为MI随DCP增加而显著上升，EDA对该体系的降解无抑制作用；（2）在PP/DCP/MAH反应挤出接枝体系中，随DCP增加，MI上升而Gx下降；随MAH增加，MI下降而Gx呈上升趋势。

Therefore Pin-Barrel Extruders offer a high flexibility for optimization of the cold feed extrusion process for each individual compound.

因此销钉-机桶式挤出机对于优化用于每种单个胶料的冷喂料的挤出工艺具有高度的灵活性。

It offers a scientific foundation and analytical means to optimize the design of single screw extruders and control processing parameters for attaining ideal products through the simulation.

通过对单螺杆挤出机的仿真，可以为优化单螺杆挤出机的设计和控制加工过程以获得理想的产品提供科学依据和设计分析手段。

PVC high-quality conical twin-screw extruder, single screw extruder and the newly developed parallel twin-screw, PVC pipe production equipment, PP-R pipe fitments, PVC plastic steel door and window manufacturing equipment, PVC mixture systems and other equipment have been a vast global customer appreciation and recognition.

高品质的PVC锥形双螺杆挤出机、单螺杆挤出机及新研制的平行双螺杆、PVC管材生产设备、PP-R管材生设备、PVC塑钢门窗生产设备、PVC混料系统等设备得到了全球广大客户的赞赏和认同。

The distributions of velocity, velocity gradient, shear stress, clongation stress, first normal stress difference and pressure of the flow of a power-law fluid in the profile die were analyzed. It indicates that for a power-law fluid only after a few iterations a good convergence can be reached, even though in the case of high extrusion velocity.

本文分析了幂律流体在异型材挤出口模内的速度分布、速度梯度分布、剪切应力分布、拉伸应力分布、第一法向应力差分布和压力场，研究表明采用幂律流体模型，即使在挤出速度非常大的情况下，经过有限次迭代，模拟计算都能够收敛，并得到合理的结果。

The design flow out of the nose is the key to the design, and the structure of the reasonableness of the extrusion products directly affect the quality and production efficiency.

流道设计是挤出机头设计的关键，其结构的合理性直接影响到挤出制品的质量和生产效率。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。