Lightweight and strong polymeric foams show high potential application in alleviating the global energy crisis due to their capability of reducing material resource requirements as well decreasing consumption. However, it is inevitably difficult produce lightweight polymers with satisfactory mechanical properties. Herein, we report an innovative method high-performance polypropylene (PP) by com...

High-melt-strength (HMS) polypropylene (PP) has enabled easy supercritical-CO2 (scCO2) foaming of PP. However, producing microcellular PP foams via simple scCO2 extrusion still remains challenging, whereas macrocellular with high expansion ratios (ER) generally exhibit poor mechanical strengths. In this study, to simultaneously enhance both ER and compressive strengths foams, a type low-cost Ja...

One effective way to make a large-capacity mobile communication system is to use a microcellular system. One way to do this is to place the base station antennas lower than the surrounding buildings. This result in what is called a street microcellular system. We previously presented basic simulation results evaluating the performance of a different-sized cell combination algorithm (DCC) design...

Microcellular injection molding using supercritical fluid (SCF) as blowing agent attracts more and more interests. There are still many difficulties in microcellular injection molding, such as decreasing equipment cost, controlling cellular morphology, and increasing feasibility. In this work, primary microcellular injection molding experiments were carried out on newly-developed equipment, whi...

This paper summarises the cell design issues for microcellular networks and explains how conventional large cell network design techniques may not be suitable for designing a ubiquitous microcellular network. A general interference model developed for arbitrary microcellular networks, using a parameter denoted the ‘interference to noise ratio’ or INR, is used to determine the microcell spacing ...

High performance electromagnetic (EM) interference shielding composites are of high demand due to increasing EM wave radiation pollution. In this work, GO/NiNCs/PMMA microcellular foams with different GO/NiNCs gradient and 3D conductive filler framework were fabricated by thermal reduction supercritical CO2 foaming process. With the crosslink 1D NiNCs 2D GO sheets, electrical conductivity varie...

With the rapid development of electronic information technology, traditional metal conductive materials can no longer satisfy needs a wider industry. Poly(butylene succinate)/multiwalled carbon nanotubes (PBS/CNT) polymer nanocomposites with varied CNT content were prepared by HAAKE torque rheometer. The addition significantly improved crystallization, viscoelasticity, and mechanical properties...