background and aims. the aim of this study was to compare flexural strength of specimens processed by conventional and injection-molding techniques. materials and methods. conventional pressure-packed pmma was used for conventional pressure-packed and injection-molded pmma was used for injection-molding techniques. after processing, 15 specimens were stored in distilled water at room temperatur...

Gas-assisted injection molding process is much complicated,the process parameters have multiplied. In this paper, a product with typical character of gas-assisted injection molded part is employed as the object of study. With the mould of gas-assisted injection molding and MPI/3D GAS in Moldflow software,the influence rule of the 6 important process parameters on gas penetration length in gas-a...

Self-reinforced composites combine lightness and increased recyclability than conventional composites. To position them within the industrial market (conventional composites) simultaneously highlight their potential in a given application context, it is necessary to analyze mechanical properties for possible exploitation. For this purpose, compression molding has been used manufacture different...

The demand for polymer composite solutions in bipolar plates electrolyte membrane fuel cells (PEMFCs) has risen due to advantages over metal such as longer lifetime, weight reduction, corrosion resistance, flexible manufacturing, freedom of design, and cost-effectiveness. challenge with composites is achieving both sufficient electrical conductivity mechanical stability high filler content. A c...

In this study, three novel thermoplastic impregnation processes were analyzed towards automotive applications. The first process is compression resin transfer molding in which a glass fiber mat impregnated through thickness by polymer. second melt-thermoplastic Resin Transfer Molding (RTM) the fibers are plane with help of spacer. third process, stamp forming hybrid bicomponent fibers, coats in...

Wool, choline dihydrogen phosphate ([Ch][DHP]) or serinate ([Ch][Seri) ionic liquids (ILs) were incorporated into native collagen formulations and films prepared by compression molding. Scanning electron microscopy (SEM) images showed no agglomeration, indicating good dispersion of additives within films. The denaturation peak observed differential scanning calorimetry (DSC), along with infrare...

background: the shielding methods in radiotherapy due to delivering an accurate radiation dose to cancer tissues and avoiding unnecessary dose to normal tissues are very important. these methods include lead standard blocks, individual molding and multi leaf collimator (mlc). the mlc method is not still common in iran radiotherapy centers. individual molding is better than the lead block shield...