聚合物熔体

聚合物熔体前沿追踪的levelset方法研究

Study of Level Set Method for Front Tracking of Polymer Melt

CO2气体进入聚合物熔体中的形态变化过程

Investigation of Morphology Varieties of CO_2 Injected into Polymer Melt

聚合物熔体与CO2气泡在螺旋流场中的动态特性研究

Study on the dynamic performance of polymer melts and co_2 bubble in the helix flow field

聚合物熔体在U形截面流道中的流动模型

Fluid Model of Polymer Melt in U-shaped Sectional Flow

聚合物熔体结晶的方式（Regime）理论

Regime Theory of Polymer Melt Crystallization

为了实现微孔塑料的挤出成型，必须首先在挤出过程中形成聚合物熔体／气体的均相体系，而均相体系的形成涉及到超临界CO2流体在聚合物熔体中的分散和溶解。

In order to carry out this process , uniform phases solutions containing polymer melt and supercritical CO_2 fluid must be formed in the first place .

利用自行设计的长方形可视化流道进行了大量的试验，观察CO2气泡在聚合物熔体中的动态特性，分析了CO2气泡与聚合物熔体在螺旋流场及组合流场中的形态及变化。

Large tests are carried out about the CO2 gas and the polymer melts in a kind of helix flow field using the direct visual flow-field .

采用毛细管动态流变仪，选用PELD、PP、PS和PA等典型物料，研究了毛细管动态挤出下各聚合物熔体的非线性流变行为。

The dynamic rheological behavior of melts of PE-LD , PP , PS and PA was studied with a dynamic capillary rheometer .

研究了聚合物熔体经短口型挤出时的胀大行为及机理，并应用形变流体微元分析方法，导出了短口型挤出胀大方程，即B

The extrusion swell behavior and mechanism for polymer melts from short dies were studied . Underground Microcellular Communications Network Design of Micro-Communication System with an Object-Oriented Approach A Finite Element Analysis for Fluid Transients

在对PS和PP熔体进行流变分析和采用正电子湮灭、红外二向色性、GPC及热分析等方法对其凝聚态分子结构进行表征的基础上提出了超声辐照对聚合物熔体的降粘机理。

The molecular conformation and structure of the polymers were analyzed by positron annihilation , infrared dichroism , GPC and thermal analysis , etc.

与MMH钻井液配伍的降滤失剂的研制新一代应用于聚合物熔体过滤器的清洁技术

Amphoteric polymer filtration reducer HY-1 used in MMH drilling fluid

研究结果对FDM工艺中聚合物熔体挤出参数的优化、保证成形精度提供了依据。

The research results have important reference values for determination of the extrusion parameters to ensure the modeling accuracy of prototype .

聚合物熔体物性参数（如密度ρ、导热系数k以及热容Cp等）、管长和管内流速对θ均产生影响，被合并为管子的无因次轴向距离。

Polymer characteristic ( density p , heat conducting k , heat capacity C ~ , etc ), length of tube and velocity of folw will affect melt temperature rises , these factors are untied a reduced distance in axis .

Haake混合器中双组分聚合物熔体共混过程的数值模拟研究

Numerical Simulation Study on the Blending Process of Two Polymer Melts in Haake Internal Mixer

通过计算螺杆转过不同角度时的拟稳态流场，采用粒子示踪分析（PTA）方法，对组合螺杆中聚合物熔体的动态混合过程进行了可视化模拟；

Based on the quasi-steady flow fields calculated at different rotational angles of twin screws , dynamic mixing processes in the screw assemblies were simulated through particle tracking analysis ( PTA ) .

根据流变学原理，在圆形截面流道流动模型的基础上，采用截面面积等效法，从理论上建立了聚合物熔体在U形截面流道中流动时剪切速率、流率和压力降之间的关系式。

On the principle of rheology , this research adopts the equivalent method of sectional area to establish the formula of the relation between shearing rate ? flowing rate and pressure drop for polymer melt in U-shaped sectional flow .

微注射成型技术是推动微机电系统（MEMS）飞速发展的关键技术之一，其发展过程中面临的挑战主要是微尺度型腔中聚合物熔体的充填困难。

Micro Injection Molding ( MIM ) is one of the key technologies which promote the development of Micro Electro Mechanical systems ( MEMS ) . The melt filling difficulty in micro cavity is the main challenge of MIM now .

本文探讨了如何通过聚合物熔体流变特性参数的测量来估算挤出流动中第一法向应力差N1的问题。

This paper deas with the problem of evaluating the first normal stress difference ( N. ) in extrusion flow through measurements of the rheological parameters of polymer melts .

采用积分型本构方程Wagner模型描述聚合物熔体的粘弹性记忆特性，并引入了非线性衰减函数。

The constitutive equation used is integral Wagner model in which the nonlinear decay function is contained , and it is generally recognized better one to describe the memory effects for polymer melts .

总结了聚合物熔体在剪切流场壁面滑移研究的成果，提出了ZW模型的物理概念。

This paper sums the study results on wall slip of polymer melt in shear flow , which leads to the physical meaning of the developed Z-W model .

采用Leonov本构模型，首次研究了在注射成型中模腔内聚合物熔体的振动剪切流动时所产生的振动剪切应力。

Based on Leonov constitutive model , the oscillatory shear stress generated by the oscillatory shear flow of polymer melts in a cavity during injection molding is probed .

定义了更合理的边界条件，采用Carreau本构方程，采用有限体积方法对聚合物熔体在螺槽内流动的周期性效应进行了数值模拟分析。

Adopting Carreau constitutive equation , the periodic effect of the flow of polymer melt in the screw channel is numerically simulated after the more reason - able boundary conditions are defined .

概述了超临界二氧化碳（SC-CO2）在聚合物熔体中的溶解度，SC-CO2对熔体黏度和共混物两相间黏度比以及界面张力的影响，介绍了SC-CO2对聚合物共混物微观形态的影响。

Solubility of supercritical carbon dioxide ( SC-CO_2 ) in polymer melts was reviewed , and then the effects of SC-CO_2 on the viscosity of melt , viscosity ratio and interfacial tension of polymer blends were summarized . The effect of SC-CO_2 on morphology of polymer blends was briefly introduced .

同时，不同的圆锥入口角，表现出不同的Bagley校正因子对应不同的挤出胀大值，反映了聚合物熔体在不同圆锥入口角短口模挤出过程拉伸弹性形变特性的差异。

And meanwhile , different conical entrance angles exhibited different Bagley correction factors and corresponding die swell . This phenomenon expressed the differences of the characteristic of tensile elastic deformation of LDPE melt which flows through cone entrance and short die land with different entrance angles during extrusion process .

新一代应用于聚合物熔体过滤器的清洁技术

Filter cleaning technologies of the next generation applied for polymer filtration

圆环隙口模中聚合物熔体的受力分析

An Analysis of the Stress of Molten Polymers in Annular Dies

毛细管中聚合物熔体不稳定流动的研究进展

Advance in the research of polymer melt unstable flows in capillary

聚合物熔体三维等温流动的罚有限元分析

Penalty Finite Element Analysis of Three Dimensional Isothermal Polymer Melt Flow

注射成型中聚合物熔体充填流动的数值模拟

Numerical simulation of filling flow of polymer melt in injection molding

聚合物熔体狭缝流动的有限元计算

Finite Element Method for Calculating Polymer Melt Flow in Thin Gaps