Results 21 to 30 of about 12,723 (223)

Tribological Characterization of Some Elastomers Used at Progressive Cavity and Piston Pumps [PDF]

open access: yesMATEC Web of Conferences, 2020
The progressive cavity pump (PCP) is a positive displacement pump, consisting of a polished helical-shaped rod (rotor) turning inside a helical elastomer (stator).
Mohamed Iyad Al Naboulsi   +3 more
doaj   +1 more source

Repulsive bimodal atomic force microscopy on polymers

open access: yesBeilstein Journal of Nanotechnology, 2012
Bimodal atomic force microscopy can provide high-resolution images of polymers. In the bimodal operation mode, two eigenmodes of the cantilever are driven simultaneously.
Alexander M. Gigler   +5 more
doaj   +1 more source

Rheological Master Curves of Crystallizing Polymer Mixtures

open access: yesApplied Rheology, 2006
We present a simple methodology for extending linear viscoelastic measurements of crystallizing polymers to the high-frequency regime, where usually crystallization kinetics represents an obstacle. The idea is to perform rapid quenches, below the melting
Kapnistos M., Vlassopoulos D.
doaj   +1 more source

Estudo comparativo de diferentes tipos de polibutadieno na tenacificação de poliestireno Comparative study of different types of polybutadiene on the toughening of polystyrene

open access: yesPolímeros, 2007
Neste trabalho foi avaliada a tenacificação de poliestireno (PS) utilizando três tipos de polibutadieno (PB): polibutadieno baixo-cis (PBb), polibutadieno alto-cis (PBa) e copolímero em bloco (SBS) de estireno e butadieno (PBco). Foi observado um aumento
Fernanda M. B. Coutinho   +3 more
doaj   +1 more source

"Preparation of cardanol functionalized liquid 1,2-polybutadiene and enhancement of interfacial interaction on butadiene-styrene rubber/silica composites"

open access: yesHecheng xiangjiao gongye, 2022
Phenol functionalized liquid 1,2-PB (1,2-PB-g-CA) was prepared by grafting bio based cardanol (CA) onto 1,2-polybutadiene rubber (1,2-PB) by olefin metathesis.
GAO Wen-ke, ZHANG Wen-jing, LIU Jin-hui, HUA Jing?鄢
doaj   +1 more source

Infrared microspectroscopic study of the thermo-oxidative degradation of hydroxy-terminated polybutadiene/isophorone diisocyanate polyurethane rubber [PDF]

open access: yes, 2007
Hydroxy-terminated polybutadiene/isophorone diisocyanate (HTPB-IPDI) polyurethane rubber that was aged in air at elevated temperatures has been studied by infrared microspectroscopy.
Fredericks, Peter M.   +3 more
core   +1 more source

Determination of Gel Content (C-C Crosslink) in Polybutadiene Rubber by Differential Scanning Calorimetry [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2014
Due to the gel formation in polybutadiene and some of the problems raised in rubber industry such as groove cracking in products, quantification of the gel content and identification of the microstructure of butadiene elastomer is extremely important. In
Saeed Taghvaei Ganjali   +2 more
doaj   +1 more source

The effect of crosslink density on the cold crystallization behavior of polybutadiene elastomers

open access: yeseXPRESS Polymer Letters, 2023
This report presents an insightful investigation of the cold crystallization behavior of sulfur-crosslinked polybutadiene elastomers. The influence of crosslink density on the cold crystallization activities of sulfur-crosslinked polybutadiene rubber (BR)
Arpan Datta Sarma   +3 more
doaj   +1 more source

Oligomer/Polymer Blend Phase Diagram and Surface Concentration Profiles for Squalane/Polybutadiene: Experimental Measurements and Predictions from SAFT-γ Mie and Molecular Dynamics Simulations [PDF]

open access: yes, 2020
The compatibility and surface behavior of squalane–polybutadiene mixtures are studied by experimental cloud point and neutron reflectivity measurements, statistical associating fluid theory (SAFT), and molecular dynamics (MD) simulations.
Sabattie, Elise F.D.   +9 more
core   +2 more sources

Preparation of star-shaped polybutadiene via coordinative chain transfer polymerization

open access: yesHecheng xiangjiao gongye, 2022
Ternary rare earth coordination chain transfer polymerization system of neodymium 2,5-dimethyl-2-ethylcaproate / diisobutyl aluminum hydride / dichlorodimethylsilane was used, and the ring opening polymerization of dicyclohexlactone 4,4ˊ- dioxane heptyl ...
LI Qiong-rong; LIU Heng; WANG Feng; ZHANG Chun-yu; ZHANG Xue-quan
doaj   +1 more source

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