Abstract This paper presents work from an ongoing study into the use of post-consumer waste polymer in rotational moulding process. Raw plastic recyclate, predominantly consisting polyethylene, was processed powders containing additive package suitable for moulding, with and without addition a compatibiliser. Rheological studies on materials showed very high viscosities at low shear rates compa...

Different cyclic loading modes have been used in in vitro fatigue studies of PMMA bone cement. It is unclear which loading mode is most appropriate from the perspective of the in vivo loading experienced by the cement in a cemented arthroplasty. Also, in different in vitro fatigue studies, different test specimen configurations have been used. The present work considers the influence of test sp...

Micro powder injection moulding-μPIM is a powder injection moulding-PIM variant for microparts/devices. This study is about the optimization and respective production of nanocomposites feedstocks suitable to μPIM process. The optimization of MWCNT content in metal matrix composites-MMC feedstock were performed using torque rheometry until achieve homogeneous feedstocks with suitable flowability...

In vivo imaging studies in animal models are hindered by variables that contribute to poor image quality and measurement reliability. As such we sought to improve the diffusion coefficient (ADC) of an orthotopic mouse model of gastric cancer in diffusion-weighted images (DWI) using alginate moulding and Ultrasonic coupling medium. BGC-823 human gastric cancer cells were subcutaneously injected ...

Strong non-linearity combined with the complicated rheological behaviour of polymers makes the quality characteristics of products unpredictable in plastic injection moulding. The purpose of this work is to study the mechanical properties of injection moulded polypropylene/E-glass composites. The process parameters like the melt temperature, injection pressure, packing pressure and cooling time...

Long-chain branching (LCB) with peroxydicarbonates (PODIC) is known as a suitable post-reactor process to introduce strain-hardening behaviour and an increase of melt strength to a linear polypropylene (PP). This opens up new possibilities for processing and therefore application. Especially in the case of adding value to PP post-consumer waste, LCB is a promising approach. LCB takes place by a...

The micro metal injection moulding (μMIM) is suitable for producing high series of net shaped parts at competitive cost compared with subtractive processes, as dental implants. The μMIM has five main steps: selection of powders and binder, production of feedstocks (mixing), injection moulding, debinding and sintering. The material selected was the 316L steel due to its wide use as biomaterial a...

Exposure to isocyanates can be harmful to workers by causing different disorders of the airways. The main objectives of this study were to survey the personal 8 h time-weighted average exposure to isocyanates at 13 Swedish plants that handled either polyurethane, diisocyanates or both, including four types of manufacturing processes: moulding, continuous foaming, flame lamination and low or no ...

This study aims to give data concrning phantom material made in Iran i'rom a natural rubber which is used for obtaining calibration data for patient dose measurements in nuclear medicine applications of radionuclides for therapy and diagnosis. Is showed to be a tissue equivalent material cheap (25000 Rials the material itself and 35000 Rials the process of casting and moulding etc.), easi...