نتایج جستجو برای: polyvinyl chloride pvc

تعداد نتایج: 94770  

Journal: :Shock and Vibration 2021

An experiment on the static and dynamic tensile mechanical properties of polyvinyl chloride (PVC) elastomers is conducted using an Instron-5943 universal testing machine improved Split Hopkinson Tensile Bar to study PVC elastomer materials. The stress-strain curves materials with three types Shore hardness (57A, 52A, 47A) under strain rates 0.1 s−1 400 ∼ 1800 are obtained. Results show that beh...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2006
mohsen masoomi ali asghar katbab hossein nazockdast

attempts have been made for the first time to produce a friction material with thermal sensitive modulus by the inclusion of combined plastic/rubber properties of thermoplastic elastomers (tpe) as viscoelastic polymeric materials into the formulation for the purpose of increasing the damping behavior. in order to evaluate the viscoelastic parameters such as loss factor (tan δ) and elastic modul...

Journal: :Journal of pain & palliative care pharmacotherapy 2015
Chenzira D Raphael Fang Zhao Susan E Hughes Katherine M Juba

Levetiracetam is a commonly used antiepileptic medication for tumor-related epilepsy. However, the 100 mL intravenous (IV) infusion volume can be burdensome to imminently dying hospice patients. A reduced infusion volume would improve patient tolerability. The purpose of this study was to evaluate the stability of 1000 mg/25 mL (40 mg/mL) levetiracetam IV solution in sodium chloride 0.9%. We pr...

Journal: :E3S web of conferences 2023

Plastic pollution has become a global concern, and research shown that carbon emissions during the lifecycle of plastics are rapidly consuming credits. This study focuses on effective assessment from polyvinyl chloride (PVC) using life cycle (LCA) method production recycling stages. The greenhouse gas emission potential is evaluated 1kg PVC plastic as functional unit. Research total stage 7.83k...

Journal: :Periodicals of Engineering and Natural Sciences (PEN) 2022

This article aims to study the effect of concentration with additives on kinematic viscosity crude oils. Additionally, influence solvents that reduces heavy oil significance their functions in flow rate oil, which is transported by conveyor pipes long distances. Different concentrations polymers different types named as Polyvinyl chloride (PVC), Sodium dodecyl sulfate (SDS) and Carboxymethyl ce...

Journal: :Journal of Life Cycle Assessment, Japan 2023

The novel polyvinyl chloride (PVC) dechlorination technology addresses two challenges in the industrial metabolism of PVC: loss chlorine (Cl) into environment as calcium (CaCl2) or a component landfilled fly ash, and carbon (C). recovers Cl sodium (NaCl), conventional source Cl, also enables recovery carbon-containing chemicals that could potentially serve new C. reductions environmental impact...

2007
Dulce C.M. Silva Nuno M.C. Oliveira

This paper describes a methodology for the design of free-radical polymer products based on discontinuous operation. This design problem is characterized by considerable complexity, high dimensionality, nonlinear behavior of the physical models, and multi-objective nature. To avoid most of these limitations, a two-step methodology is introduced, where the problem is initially reformulated in te...

Journal: :Journal of Renewable Materials 2023

The application of phthalate plasticizers has been restricted around the world due to their poor migration and potential harm human body. Hence, producing functional bio-based via exploiting clean reusable resources meets satisfaction current demands. In this study, flame-retardant rubber seed oil-based plasticize (FRP) was prepared epoxidation reaction ring opening addition reactions, which us...

Journal: :Thermochimica Acta 2022

Electric arc furnace dust (EAFD) which is accumulated in large amounts world-wide contains hematite (Fe2O3) and significant quantities of magnetite (Fe3O4). Waste polyvinyl chloride (PVC) also poses a great environmental threat aside to EAFD. Both these wastes have shown potential for their co-thermal treatment metal extraction, thus minimising footprint. Herein, an investigation on the thermal...

Journal: :Coatings 2021

The application of catheters to the urinary tract is associated with nosocomial infections. Such infections are one most common types in hospitals and health care facilities can lead numerous medical complications. Therefore, understanding properties catheter surfaces their potential modifications crucial order reduce bacterial adhesion subsequent biofilm formation. In our study, we consider st...

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