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2 edition of Swelling behaviour of nitrile rubber in organic liquids found in the catalog.

Swelling behaviour of nitrile rubber in organic liquids

S. N. Lawandy

Swelling behaviour of nitrile rubber in organic liquids

by S. N. Lawandy

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Published .
Written in English


Edition Notes

Thesis(Ph.D.) - Loughborough University of Technology 1973.

Statementby S.N. Lawandy.
ID Numbers
Open LibraryOL20072014M

rubber were gases (butadiene, propylene and ammonia) our elastomer can be defined as a supercondensed gas. The most stable thermodynamic state (highest entropy) is a gas. An elastomer is a solid, hence, the eventual progression to thermodynamic stability is the procession from a solid, to a liquid, ultimately - a gas. Since the. Modelling diffusion induced swelling behaviour of natural rubber in an organic liquid Liquid uptake of polymers, especially of elastomers, is associated with swelling. The swelling process is induced by diffusion and causes stresses, which interact with the diffusion again. Thus, swelling is a coupled phenomenon of mechanical behaviour.

STRUCTURAL CHARACTERISTICS AND SWELLING MECHANISM OF TWO COMMERCIAL NITRILE-BUTADIENE ELASTOMERS IN VARIOUS FLUIDS *, nchi and Department of Physics, West Virginia University, Morgantown, WV , USA ABSTRACT. Results on the structural characteristics and swelling mechanisms of the two commercial. ASTM's rubber standards are instrumental in specifying, testing, and assessing the physical, mechanical, and chemical properties of a wide variety of materials and products that are made of rubber and its elastomeric derivatives.

The Complete Book On Rubber Processing And Compounding Technology (with Machinery Details) 2nd Revised Edition by Niir Board Of Consultants And Engineers, ISBN: , Rs. / . The swelling behaviour of the nitrile rubber in the two other nTiO 2 solutions was also investigated. The mass gain of the nitrile rubber samples was presented as a function of immersion time in water, EG, and PG containing nTiO 2 (Figure 5). A gradual mass increase was observed for all of the colloidal solutions, with virtually identical data for the EG and PG solutions.


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Swelling behaviour of nitrile rubber in organic liquids by S. N. Lawandy Download PDF EPUB FB2

The propensity to swell nitrile rubber was found to increase with the polarity and hydrogen-bonding character of the aromatics, suggesting that swelling of nitrile rubber requires disrupting the attractive forces between cyano groups on adjacent polymer chains and replacing them with cyano group−aromatic by: Swelling behaviour of nitrile rubber in organic liquids Author: Lawandy, Samir N.

ISNI: more specifically with volume changes of rubber in liquids, particularly with nitrile rubbers and mineral oils; with free swelling and the effect of compressive strain on swelling and : Samir N.

Lawandy. Quantification of styrene-butadiene rubber swelling as a function of the toluene content in gasoline: A new method to detect adulterations of fuels.

Journal of Applied Polymer Science(4), DOI: /app G rald Perron, Jacques E. Desnoyers, Jaime by: 2. DOI: /RTESTING Corpus ID: Structural Characteristics and Swelling Mechanism of Two Commercial Nitrile-Butadiene Elastomers in Various Fluids @article{SeehraStructuralCA, title={Structural Characteristics and Swelling Mechanism of Two Commercial Nitrile-Butadiene Elastomers in Various Fluids}, author={Mohindar S.

Seehra and. Abstract 1. Literature on the swelling of hard rubber is reviewed (Section I). Experiments are described on the swelling of two hard rubbers, with high and low combined sulfur contents, respecti Author: R.

Parris, J. Scott. The torsional behaviour of 1, 3 and 5 phr peroxide crosslinked natural rubber has been characterized over a range of strains from near the undistorted state (γ ≈ ) to γ ≈ Behaviour of itr rile Rubber ~embranes Abstract crosslinked and filled nitrile rubber membranes have been studied in the temperature interval °C.

The effects of the type of plasticizer, crosslinking systems, A schematic representation of the unfilled and filled rubber matrix before and after swelling is given in Figure Chapter Ill TRANSPORT OF AROMATIC HYDROCARBONS THROUGH CROSSLINKED NATURAL RUBBER Results of this chapter have been published in Polymer ,35, T he transport of aromatic hydrocarbons through polymen has been studied extensively for many years.

Poh et aL [I] examined the swelling and absorption behaviour of bulk and solution crosslinked natural rubber (Hewa. The median freezing points of unpurified water droplets suspended between pairs of orgainic liquids are reported, and shown to depend upon droplet size as in Fig- ure 3.

The nature of the organic medium was not found critical. Chapter “Rubber Compound and Vulcanizate Testing” is related to the chapter on “Rubber Raw Material Testing” and provides a comprehensive description of the system of testing rubber compounds, materials and vulcanizates, starting from sampling and testing vessels up to evaluation of test results according to specific standards.

Nitrile rubber, which is also called Buna-N or NBR, is an unsaturated synthetic copolymer. It is commonly used to make hoses, seals, gloves, and many other industrial products. The mechanical response of nitrile rubber can be tested in many different ways.

The example shown here used uniaxial compression at different strain rates and strain cycles. By the research of swelling and mechanical properties of nitrile rubber with different acrylonitrile contents in cyclohexane medium, the influences of physical and mechanical properties with diffrent acrylonitrile contents is analyzed.

The results indicated that: the quality of all the nitrile-butadiene rubbers with different acrylonitrile contents is increasing with the increase of soaking time.

For each type of rubber compounds, the vulcanization process was performed by compression molding process at °C for 25 min under a pressure of approximately kN/m 2 from an electrical resistance heating press. The specimens for swelling test have the rectangular slab shape with 20 mm length, 5 mm width and 2 mm thickness stamped out from the compression molding.

Abstract. As found from previous studies, a Gaussian curve describes the swelling, by various liquids, of a series of nitrile rubbers containing from 0 to 50% bound acrylonitrile.

If only dispersion forces are involved, it is found that the value of maximum swelling is inversely proportional to the molar volume of the liquid causing the swelling. As a result, knowing the molar volume and the polarity index of a liquid.

- (Nitrile) (NBR) is a general purpose oil resistant polymer known as nitrile rubber. BUNA-N is a copolymer of butadi-ene and acrylonitrile.

BUNA-N has good solvent, oil, water and hydraulic fluid resistance. It displays good compression set, abrasion resistance and tensile strength. In this article, data obtained by Zellers et al. with butyl rubber and a list of 53 solvents are analyzed to identify the parameters controlling the swelling of this elastomer.

The absence of a global effect of the Hansen affinity, solvent molar volume and saturation vapor pressure, and Flory–Huggins interaction parameter has been confirmed. Therefore, their performance and service life mainly depend on the wear and friction characteristics in use. The objective of this scientific work is to identify the effect of swelling-induced ageing on the tribological properties and surface damage mechanisms of hydrogenated nitrile butadiene rubber (HNBR) in contact with different liquids.

dissolution of polymers, especially of rubber, are the subjects of intensive investigation over almost a hundred years. The review of earlier works on natural rubber swelling is presented in [3]. The quantitative data on adsorption of organic solvents in crude and vulcanized rubber were presented for the first time here.

Some. of a nanocomposite based on carboxylated nitrile butadi-ene rubber (XNBR)-nanoclay. Liquid immersion measure-ments were conducted for different nanocomposites using two neat organic solvents (i.e. carbon tetrachloride (CCl 4) and ethyl acetate).

Diffusion and solubility coefficients of these solvents were estimated in the nanocomposite samples. Nitrile rubber (NBR), an oil-resistant synthetic rubber produced from a copolymer of acrylonitrile and butadiene. Its main applications are in fuel hoses, gaskets, rollers, and other products in which oil resistance is required.

In the production of NBR, acrylonitrile (CH2=CHCN) and butadiene. Fig. I Swelling of Linseed Oil Film in Solvents Arranged According to Solubility Parameter (adapted from Feller, Stolow, and Jones, On Picture Varnishes and Their Solvents) Polymer Cohesion Parameters.

Figure 1 plots the swelling behavior of a dried linseed oil film in various solvents arranged according to Hildebrand number. Of the solvents.Aminabhavi TM, Khinnavar RS: Diffusion and sorption of organic liquids through polymer membranes: polyurethane, nitrile-butadiene rubber and epichlorohydrin versus aliphatic alcohols (C1–C5).

Polymer– /(93)V. CAS; Article; Google Scholar.Organic rubber gaskets such as Buna-S (SBR), Buna-N (Nitrile), natural rubber, synthetic isoprene break down relatively quickly in Cellulose Fiber / Synthetic or Nitrile Rubber Binder swelling, fluid absorbency, and compressibility.

It has a maximum temperature range of °F. Felt There are generally two categories of felt. Wool or.