WATER-SWELLING ELASTOMERS BASED ON ETHYLENE-PROPYLENE RUBBER

This paper is dedicated to the investigation of water- and oilswelling ability of the elastomeric material based on nonpolar ethylene-propylene rubber, modified by water swelling agents such as combination of copolymer acrylamide with potassium acrylate and sodium-carboxymethyl cellulose. It was found that the maximum volume increase of the sample recorded during it`s exposure in water and is equal 1250 %, in 10 % and 22 % aqueous solutions of sodium chloride is up to 280 % and 210 %, in oil and the Polyekonol-Flora drilling system 70 % and 80 %, respectively.

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Efficiency of Application of Hydrolyzed Polyacrylamide and Copolymer Acrylamide with Potassium Acrylate as a Water-Swelling Agent in Rubbers

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.816.208 ◽

2019 ◽

Vol 816 ◽

pp. 208-213

Author(s):

Svetlana S. Lopatina ◽

M.A. Vaniev ◽

N.V. Sychev ◽

D.A. Nilidin ◽

Y.Yu. Savchenko ◽

...

Keyword(s):

Aqueous Solution ◽

Sodium Chloride ◽

Carboxymethyl Cellulose ◽

Sodium Carboxymethyl Cellulose ◽

Butadiene Rubber ◽

Swelling Ratio ◽

Nitrile Butadiene Rubber ◽

Swelling Agent ◽

Water Swelling ◽

Hydrolyzed Polyacrylamide

This paper reviews water swelling of rubber, based on nitrile-butadiene rubber, modified by polyacrylamide and copolymer acrylamide with potassium acrylate, also their combination with sodium-carboxymethyl cellulose. During the exposure for 14 days at a temperature of 67 °С swelling ratio in water is 200 % and 47 % in 10 % aqueous solution of sodium chloride.

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ELASTOMERS WITH A HIGH CONTENT OF MODIFIED CARBOXYMETHYLCELLULOSE

IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY ◽

10.35211/1990-5297-2021-12-259-71-77 ◽

2021 ◽

pp. 71-77

Author(s):

A. F. Puchkov ◽

M. P. Spiridonova ◽

D. A. Kutsov ◽

A. N. Kutsov ◽

V. A. Drozdev

Keyword(s):

Aqueous Solutions ◽

Carboxymethyl Cellulose ◽

Rubber Matrix ◽

Mineral Salts ◽

Complex Salts ◽

Water Swelling ◽

Crosslinking Agents

The use of lactam-containing complex salts (LCS) with the functions of dispersants, apparatuses and crosslinking agents made it possible to obtain elastomers with a high (at least 300 wt.% per 100 wt.h. of rubber), containing modified carboxymethyl cellulose for the cuff of a packer device capable of performing the necessary shut-off functions in contact with highly concentrated, at least 25% aqueous solutions of mineral salts - NaCl and CaCl2. The achieved effect is expressed in the ability of LCS to disperse water-swelling polymers (GNP), to have an appreting effect on GNP particles, thereby preventing their agglomeration, as well as to create additional chemisorption bonds in the rubber matrix. As a result, a developed network of interface boundaries is obtained, which contributes to the rapid penetration of aqueous solutions of mineral salts into the array of elastomeric composition.

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