نتایج جستجو برای: acrylonitrile butadiene rubber nbr

تعداد نتایج: 22152  

Journal: :Macromolecules 2021

Extending the mechanical lifetime of NBR (i.e., poly(acrylonitrile-co-butadiene)), a large-volume synthetic rubber, requires better understanding its structure–property relationships. We demonstrate that industrial-grade and uncross-linked can be mechanically rejuvenated physically aged due to an inhomogeneous distribution monomers along polymer chains. As opposed nonpolar SBR counterpart poly(...

Journal: :Polymer Bulletin 2023

Abstract Nanocomposites based on acrylonitrile butadiene rubber (NBR) and ethylene–proplene diene monomer (EPDM) (50/50) filled with different concentrations of nano-waste magnetic filler (nWMF) up to 120 phr were prepared by two laboratory roll mill mixer. nWMF was characterized using XRD, TEM VSM. The nanocomposites investigated techniques: SEM, TGA, DSC. In addition the rheological, mechanic...

Journal: :Journal of Polymer Research 2022

Abstract We prepared different thermoplastic elastomers (TPEs) using an internal mixer. investigated the properties of polyurethanes (TPUs) produced from prepolymers with various isocyanate content and two chain extenders to select most appropriate TPU matrix for preparing vulcanizates (TPVs). Based on results, we selected a prepolymer moderate (10%) more flexible 1,6-hexanediol as extender TPV...

Journal: :Clean Technologies and Environmental Policy 2022

Abstract Red brick waste (RBW) powder was used as a reinforcing filler for acrylonitrile butadiene rubber (NBR) preparing eco-friendly composites. The main constituent of this is silica which considered to be one the traditional fillers in industry. So it worthwhile get suitable manner by using NBR. Physicomechanical properties were evaluated, including tensile strength, elongation at break, ha...

Journal: :International journal of occupational medicine and environmental health 2018
Sylwia Krzemińska Małgorzata Pośniak Małgorzata Szewczyńska

OBJECTIVES The objective of the work was to determine the resistance of selected protective clothing and glove materials to permeation of cytostatics such as docetaxel, fluorouracil, and doxorubicin. MATERIAL AND METHODS The following glove materials were used: natural rubber latex (code A), acrylonitrile-butadiene rubber (code B) and chloroprene rubber (code C). In addition, we tested a laye...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2005
Tetsuya Kawashima Toshio Ogawa

A quantitative measurement method with FT-IR was proposed for a thermal degradation analysis of nitrile-butadiene rubber (NBR). An NBR film was prepared as a model sample on a barium fluoride (BaF2) crystal plate, which was subjected to a heat treatment. The absorbances of various functional groups were measured directly by FT-IR after thermal degradation at high temperatures. By measuring the ...

2012
Qin Hongling

Nitrile-butadiene rubber (NBR) and another polymer with an excellent self-lubricating property are blended to develop a new kind of polymer used for water-lubricated stern bearings. The tribological performance of the new Polymer Blend of NBR (PBN), with the comparison of a rubber common used for most stern bearings, was studied using a stern bearing test rig of SSB-100. The results showed that...

2014
Zhenghai Tang Qiuyan Wei Baochun Guo

Materials Butyllithium solution in hexane (1.6 M) and molybdenum disulfide (MoS2, 99.0% purity) with an average diameter of about 1 μm were purchased from Aladdin. Nitrile rubber (NBR) with acrylonitrile content 40%, was manufactured by Jilin Chemical Industry Company, Jilin, China. 1butyl-3-methyimidazolium chloride ionic liquid was supplied by Henan Lihua pharmaceutical Co., Ltd. The chemical...

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