Influence of the chemical structure of additives poly(ethylene‐co‐vinyl acetate)‐based on the pour point of crude oils

2020 ◽  
Vol 137 (33) ◽  
pp. 48969
Author(s):  
Lize M. S. L. Oliveira ◽  
Rita C. P. Nunes ◽  
Larissa M. B. Pessoa ◽  
Leidiane G. Reis ◽  
Luciana S. Spinelli ◽  
...  
Keyword(s):  
Vinyl Acetate ◽  
Pour Point ◽  
Chemical Structure ◽  
Crude Oils ◽  
Poly Ethylene

scholarly journals Study the rheological properties of waxy oil with modified pour point depressants for the South Turgai oil field in Kazakhstan

2019 ◽  
Vol 74 ◽  
pp. 28 ◽  
Author(s):  
S.S. Kozhabekov ◽  
A.A. Zhubanov ◽  
Zh. Toktarbay
Keyword(s):  
Crude Oil ◽  
Vinyl Acetate ◽  
Pour Point ◽  
Oil Field ◽  
Ftir Analysis ◽  
The South ◽  
Waxy Oil ◽  
Pour Point Depressants ◽  
Poly Ethylene ◽  
Eva Copolymer

This work describes the performance of poly(ethylene-co-vinyl acetate) (EVA) copolymer and modified poly(ethylene-co-vinyl acetate) (EVA-M) as pour point reducer. Commercially available EVA copolymer modified with sodium hydroxide in methanol. Partially hydrolyzed EVA was obtained and Fourier Transform InfraRed (FTIR) analysis of the modified EVA was recorded. The modified and unmodified EVA was used to crude oil of South Turgai, Kazakhstan, in order to improve the flowability of the crude oil. According to the rheological behavior of oils in the South Turgai, the findings showed that modified EVA lowered the dynamic viscosity greater compared to unmodified EVA and heat treatment. Dynamic viscosities and yield points of different oils with various temperatures with using EVA and EVA-M were studied systematically. Finally microphotograph of crystal structures two oils with using EVA and EVA-M, under same conditions, were compared and discussed.

Contribution to the determination of relative increment of internal energy at low deformation of cross-linked rubber

1980 ◽  
Vol 45 (8) ◽  
pp. 2315-2318 ◽  
Author(s):  
Vladimír Pollák ◽  
Andrej Romanov
Keyword(s):  
Internal Energy ◽  
Vinyl Acetate ◽  
Temperature Changes ◽  
Relative Increment ◽  
Poly Ethylene ◽  
Small Deformations

The relative charge of the internal energy, fU/f, during deformation of cross-linked elastomers, poly(ethylene-co-propylene) and poly(ethylene-co-vinyl acetate), was determined at various temperatures. Anomalies in the dependence of fU/f on relative dilatation in the region of small deformations ( 35%) are to a large extent besides other factors due to the sensibility of the formula used to calculate fU/f to temperature changes.

Uniformly aligned liquid crystal molecules on reformed poly(ethylene-co-vinyl acetate) layers driven by ion beam exposure

2021 ◽  
pp. 1-10
Author(s):  
Dong Wook Lee ◽  
Eun Mi Kim ◽  
Gi Seok Heo ◽  
Ju Hwan Lee ◽  
Dong Hyun Kim ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Vinyl Acetate ◽  
Ion Beam ◽  
Poly Ethylene

Preparation of Well-Exfoliated Poly(ethylene-co-vinyl acetate)/α-Zirconium Phosphate Nanocomposites

Langmuir ◽  
2021 ◽  
Author(s):  
Mingzhen Zhao ◽  
Joseph Baker ◽  
Zhiyuan Jiang ◽  
Zewen Zhu ◽  
Hong-Mao Wu ◽  
...  
Keyword(s):  
Vinyl Acetate ◽  
Zirconium Phosphate ◽  
Poly Ethylene
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