نتایج جستجو برای: polymer additives

تعداد نتایج: 108553  

Journal: :Journal of the American Chemical Society 2005
Kimberly Chenoweth Sam Cheung Adri C T van Duin William A Goddard Edward M Kober

To investigate the failure of the poly(dimethylsiloxane) polymer (PDMS) at high temperatures and pressures and in the presence of various additives, we have expanded the ReaxFF reactive force field to describe carbon-silicon systems. From molecular dynamics (MD) simulations using ReaxFF we find initial thermal decomposition products of PDMS to be CH(3) radical and the associated polymer radical...

Journal: :International Journal of Current Science Research and Review 2022

One of the ways to improve complex properties interpolymer materials (IM) is their modification by adding various additives composition. This, in turn, improves material’s strength, hardness, heat resistance, water and a number other important properties. (IMs) physical fillers This results improved IM Modification methods are used polymer-polymer complexes expand directions use. In order compo...

Journal: :High voltage 2022

The evolution of properties crosslinked polyethylene (XLPE)-based insulating materials under radio-chemical ageing conditions is presented and discussed. In total, seven different polymer compounds were tested, characterised by an increasing quantity additives, for example, antioxidants (AOs) fillers as flame retardants. Samples analysed using testing techniques, that is, Fourier Transform Infr...

Journal: :E3S web of conferences 2023

Asphalt additives, in general, aim to improve the performance of asphalt mixtures by enhancing their durability and resistance cracking other forms damage. additives can be natural or synthetic, some are biodegradable. Natural such as reclaimed pavement, much more environmentally friendly than synthetic ones. Using help reduce environmental impact mix while its performance. This study aims eval...

Journal: :Advanced materials 2010
Hsiang-Yu Chen Jianhui Hou Amy E Hayden Hoichang Yang K N Houk Yang Yang

Silole-containing organic materials have been known to exhibit altered properties with respect to their carbon analogues. Recently, different categories of silole-containing polymers have been reported to show promising characteristics as materials for thin-film transistors and polymer solar cells. Most of the previous studies on silole derivatives mainly focus on the molecular orbital shapes a...

2003
Simon J. Haward Jeffrey A. Odell

In many practical flow situations solutions of flexible polymers are found to exhibit a well-known non-Newtonian viscosity enhancement effect. This is likely to be due to extensional components in the flow field, which can cause flexible polymer molecules to stretch and orientate, causing an increase in the extensional viscosity. This viscosity enhancement is important in many industrial applic...

2009
Jeongboon Koo Chang-Hyun Park Cheol Han Yun-Cheol Na

The trace polymer and additives in used stripper solutions were analyzed by a combination of Py-GC/MS and ESI-MS. In the comparison of the pyrolysates produced by the pyrolysis of the pure stripper and photoresist at 500 C, the presence of novolac polymer in the used stripper was confirmed by the presence of the characteristic peaks of its pyrolysates, such as those of the methylphenol, di-meth...

2007
Yue Han James Elliott

Carbon nanotubes (CNTs) are promising additives to polymeric materials due to the potential for their enhancement of the structural, mechanical and electronic properties of the resulting composite. However, improvements in properties are by no means guaranteed, and the results are often sensitive to the particular polymer chosen, in addition to the quantity and quality of CNTs used in the compo...

2013
Celso Luis de Carvalho Alexandre F Silveira Derval dos Santos Rosa

Intentional degradation by pro-oxidant agents, many of which are metal-based, can result in uncertainty as to the time of biodegradation. Polyacetal (POM) is a thermoplastic polymer commercially classified as an engineering polymer and contains carbon, hydrogen and oxygen. The depolymerization of POM during processing can enhance thermal decomposition. The aim of this study was to investigate t...

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