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- An effective method to study polymer melts in complex flow isdescribed. 提出了一种用于研究聚合物熔体复杂流动的有效方法。
- Polymer melts are typical viscoelastic materials which are neither similar to elastic solids nor to viscous fluids. 聚合物熔体既不同于弹性固体,又不同于粘性流体,它是一种典型的粘弹性材料。
- Dynamic extrusion experiments for polymer melts were done on the invariable speed type capillary dynamic rheometer (ISTCDR) made by the author. 在自行设计的恒速型毛细管动态流变装置上,对聚合物熔体进行动态挤出实验。
- Discussed thoroughly the extrusion swell phenomenon and mechanism of polymer melts in conical die with different entrance angles and different ratios of length to diameter. 深入讨论了聚合物熔体在不同长径比、不同角度圆锥口模的挤出胀大现象及机理。
- The thesis is based on the rheology and hydrokinetics of the polymer melt,and calculates the velocity in the die by FEM simulation,and provides die design with theory proof. 本论文中功能块结构的研究，是以熔体的流变性以及流体动力学理论基础上，对在口模中的熔体进行数值模拟，计算出熔体在口模中的流动参数(主要是速度的分布)，从而可以科学的对功能块几何结构进行优化。
- Recent research on energy consumption and morphology evolution during the initial stage of polymer melt compounding is reviewed. 综述了关于高聚物在熔融混合过程中能量消耗及初始阶段形态演化的研究现状。
- The types,features and applications of the polymer melt filter for extruder from both domes-tic and foreign producers are introduced. 介绍了国内外挤出机用高分子熔体过滤器的种类、特性和应用。
- A novel method for dispersing inorganic powder in the polymer melt,the in situ bubble stretching method (ISBS method) was proposed. 提出了一种用非机械力场分散聚合物熔体中无机粉体的新方法:原位气泡拉伸法。
- Ultrasonic apparatus and pressure transducers are employed in the die, which separatelycontrols the dilation of the bubbles and tests the rheological behavior of the polymer melt. 并在机头中引入了超声波装置及压力传感器,分别控制气泡的膨胀及测定熔体的流变性能。
- In the numerical simulation of parison formation, there are two main methods: one is to treat the polymer melt as a Newtonian fluid, the other is as a viscoelastic fluid. 对型坯成型阶段的数值模拟可分为两种方法:一种是将型坯机头内的聚合物熔体看作牛顿流体,另一种是将其看作粘弹性流体。
- Study shows strong elastic deformation generates in the polymer melt due to entrance conveying extensional flow and resulting in greater extrudate swell rctio. 研究表明，入口收敛拉伸流变，是聚合物熔体产生了强烈的弹性形变，导致了较大的挤出物胀大比。
- Results show the degree that gas lashed polymer melt is severe, and there are some complex fluid patterns and diffused feature near the point of gas injection. 结果表明,在气体注射点近区,气体对聚合物熔体冲击程度较大,呈现出复杂流动形态及扩散特征;
- Isothermal flow of the polymer melt in channel was discussed based on the work principle of screw in dynamic processing with self-mended Tanner constitutive equations. 同时,近似地给出了振动力场下注塑螺杆熔体输送能力的表达式,理论分析了振动参数对沿程压力降及动态成型熔体输送能力的影响。
- This model could be used for all kinds of polymer melt filter processer to achieve non-stop screen changing drven by hydraulilc unit or manual operation. 详细说明：适用于各种熔体、胶体过滤加工，不停机更换过滤网，可液压或手动。
- P.S.B.Zdanski, and M.Vaz, "Polymer melt flow in plane channels: Hydrodynamic and thermal boundary layers," Materials Processing Technology, Vol. 179, 2006, pp. 207-211. 黄呈福，田口品质工程方法之控制系统参数调整，国立中正大学机械工程研究所，硕士论文，民国九十年。
- With the development of polymer melt gear pump, the transport characteristics and main performance parameters were studied by a corotating twin screw exturder. 结合聚合物熔体齿轮泵的开发研制,并以同向平行双螺杆挤出机为实验平台,研究了聚合物熔体齿轮泵的输送特性和主要性能参数。
- When injecting gas into polymer melt in extrusion from a single orifice, it is indicated that gas-melt interface formed showed three kinds of shapes: ring, round-ring, and round. 气体经单个喷嘴进入挤出机中熔体时所形成的气熔界面其形态有环状、团环状和团状三种,最常见的是团状。
- Measurements can be carried out with plate-plate or cone-plate geometries, e.g. on polymer melts; further, measurements on solid bars (DMTA) and thin films or fibres (extension) are possible. 使用板-板或椎-板几何体系统都能执行测量，如聚合物熔体；此外，固体棒（DMTA）和薄膜或纤维（拉伸）的测量都可以进行。
- In this article,the lattice model of liquid and the expression of liquid viscosity have been extended to elucidate the relationship between viscosity of polymer melts and molecular weights. 在教学实践中，借助于小分子液体模型和液体粘度表达式，结合高聚物结构的特点，阐明了高聚物熔体粘度与分子量的关系。
- The number of layers was increased through slicing-flow changing-combining polymer melts by micro-or nano-layer coextrusion, and the micro-or nano-layer alternative structure was designed. 介绍了微纳多层共挤出技术是通过简单地对高分子熔体进行分割-变流-合并过程来增加层数的技术。
