Polymer Engineering and Science articles from September 2003

Polymer Engineering and Science archives from September 2003

Experiments on the induction welding of thermoplastics.
September 1, 2003... INTRODUCTION Because of the increasing use of thermoplastics and thermoplastic composites in load-bearing applications, welding methods are becoming important for part cost reduction. Welding requires the melting of the surfaces to be...

Effects of process parameters on the micro molding process.
September 1, 2003... INTRODUCTION There has been considerable interest in recent years in microsystem technology, and it is expected to show continuing expansion over the next decade with the trend towards miniaturization of components and increasing...

Blends of nylon/acrylonitrile butadiene rubber: effects of blend ratio, dynamic vulcanization and reactive compatibilization on rheology and extrudate morphology.
September 1, 2003... INTRODUCTION Immiscible blends are superior to miscible blends, since immiscible blends very often give rise to a combination of properties of individual components, while in miscible blends an average of the individual properties is...

Poly(L-lactic acid) composites with flax fibers modified by plasticizer absorption.
September 1, 2003... INTRODUCTION Fiber reinforced polymer composites are extensively used in many applications, ranging from aerospace technology to the automobile industry (1). These composites offer high performance such as high strength and stiffness,...

Comparison of vibration and hot-tool thermoplastic weld morphologies.
September 1, 2003... INTRODUCTION The growing importance of the welding of thermoplastics in load bearing applications--such as in automotive plastic bumpers and instrument panels--and in other applications--such as in the welding of plastic lenses to plastic...

Prediction of flow patterns in the polyurethane foaming process by numerical simulation considering foam expansion.
September 1, 2003... INTRODUCTION Rigid polyurethane (PU) foam is widely used in refrigerators as heat insulation. The PU foam layer in a refrigerator is found in a cavity consisting of an inner liner made of vacuum formed plastics and an outer steel sheet....

Elasticity at large deformations and high strain rates in injection molded polypropylene.
September 1, 2003... INTRODUCTION The deformation behavior of polymers depends on strain rate and temperature. The rate dependence of many individual aspects of deformation, such as yielding or fracture, has been studied extensively (1). An aspect of the...

Tensile mechanical behavior of linear high-density polyethylenes modified with organic peroxide.
September 1, 2003... INTRODUCTION The treatment of polyethylene (PE) with organic peroxides at temperatures above its melting point is a well-known process used to change the thermo-mechanical properties of these polymers (1, 2). Many authors have analyzed the...