نتایج جستجو برای: polyvinyl chloride pvc

تعداد نتایج: 94770  

2017
Helena Ma A M M S Ali Cleuzilene V Silva Betina Royer Guimes Rodrigues Filho Daniel A Cerqueira Rosana M N Assunção

The chemical modification of hydrophobic polymer matrices is an alternative way to elchange their surface properties. The introduction of sulfonic groups in the polymer changes the surface properties such as adhesion, wettability, catalytic ability, and adsorption capacity. This work describes the production and application of chemically modified polyvinyl chloride (PVC) as adsorbent for dyes r...

Journal: :Radiation Physics and Chemistry 2021

Polyvinyl chloride (PVC), one of the most polymeric materials present in radioactive waste, is exposed to radiooxidation process during disposal and generates many byproducts. Commercial PVC usually contain additives provide desired properties improve their stability shaping lifetime. The generally delay radiolysis limiting formation some transformation compounds, but they can indubitably gener...

Journal: :Annales De Chimie-science Des Materiaux 2022

This investigation deals with the effect of hydrothermal aging on electrical insulating properties polyvinyl chloride used in medium voltage cables. The evolution dielectric (dielectric loss factor, constant, strength and volume resistivity) as a function time temperature has been studied. After that, mechanical characteristics (elongation at break tensile strength) were also determined. Physic...

2014
Paul M Maschhoff Benjamin M Geilich Thomas J Webster

There has been a significant and growing concern over nosocomial medical device infections. Previous studies have demonstrated that embedding nanoparticles alone (specifically, zinc oxide [ZnO]) in conventional polymers (eg, polyvinyl chloride [PVC]) can decrease bacteria growth and may have the potential to prevent or disrupt bacterial processes that lead to infection. However, little to no st...

Journal: :Procedia of Engineering and Life Science 2021

Plastic welding technique is a of gluing to workpieces, especially plastic materials. The aim this research was join the thermoplastic polymer material using an acetylene oxy welding. connection method by melting electrodes on workpiece so that can fuse parent material. materials used are Polyethylene (PE), Polyvinyl chloride (PVC) and Polypropylene (PP) sheets with appropriate from their respe...

A. Bergant A. Keramat A. S. Tijsseling Q. Hou

An experiment featuring waterhammer in viscoelastic pipes is presented in which the effects of pipe-wall viscoelasticity on waterhammer pressures are investigated. A large-scale pipeline apparatus made of polyvinyl chloride (PVC) at Deltares, Delft, The Netherlands, has been used to carry out waterhammer experiments. Tests have been conducted in a reservoir-pipeline-valve system consisting of a...

Journal: :Journal of Hazardous Materials 2021

Toxicity of polyethylene (PE) and polyvinyl chloride (PVC) microplastics (MPs), either virgin or spiked with chemicals, was evaluated in two short-lived fish using a freshwater species, zebrafish, marine medaka. Exposures were performed through diet environmentally relevant concentrations MPs over 4 months. No modification classical biomarkers, lipid peroxidation, genotoxicity F0 behaviour obse...

Journal: :Journal of Polymers and The Environment 2022

Plasticizer is an important assistant in the production process of polyvinyl chloride (PVC), which can effectively improve plasticity PVC. However, durability and plasticizing effect traditional phthalate plasticizers need to be further improved. In this paper, a variety copolyesters are designed synthesized from succinic acid, hexanediol other four different diols. The performance copolyester ...

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