Epoxy-rubber compositions

STRUCTURE AND PROPERTIES OF ADVANCED EPOXY-RUBBER COMPOSITION [1-9]... [Pg.197]

Experimental research was performed on models of reinforced concrete beams (10 x 20 x 120 cm) with polymeric concrete layers. B 25 class concrete was used main longitudinal reinforcement of A-III class was used in the form of two 8-mm diameter rods and the 5-mm diameter stirrups of the same class arranged, so that destruction would be along normal sections. Epoxy-rubber compositions were used as covering layer materials. All compositions were made on ED-20 epoxy-based resin. Besides fiber glass-reinforced plastic glued by ED-20 compositions based on liquid rubbers, RubCon was used. The composition of the polymer layers and some of their mechanical characteristics are given in Table 6.3. [Pg.202]

TABLE 3.12 Characteristics of Components of Epoxy and Epoxy-Rubber Compositions (Continued)... [Pg.144]

Fig. 7.4. Fracture toughness (O) and flexural strength ( ) of silicone rubber coated carbon fiber-epoxy matrix composites as a function of coating thickness. After Hancox and Wells (1977).

I ig. X.ll. Residual stillness a.s a funetion crack length as measured from double cantilever beam specimens after impact damage carbon fiber composites containing (O) unmodified epoxy ( ) rubber-... [Pg.342]

Kim, J.K., Mackay, D.B. and Mai, Y.W., (1993). Drop weight impact tolerance of CFRP with rubber modified epoxy matrix. Composites 24, 458-494. [Pg.363]

Key Q powdered resin compositions R = a(jueous latexes, emulsions, dispersions S- organic lacquer solutions and dispersions T - plastisol and organosol formulations U = natural and synthetic rubber compositions V = hot-melt compositions W = thermoplastic masses X = oleoresinous compositions Y = reading formulations, eg.. epoxy and polyester Z = plastic monomers Dry thickness-... [Pg.258]

By adding new types of surfactants (not more than 1.2% by weight), nano-heterogenic systems with a very good specific surface of phase separation were formed. The data demonstrated the influence of the chemical composition of fluorine-containing surfactants on the properties of epoxy-rubber coatings, and are... [Pg.199]

Chemical resistance and thermostability of nano-heterogenic coatings with fluorine surface active additives (FSAA) are approximately 5%-10% higher than for unmodified ones. At the same time, addition of about 3 mass% of metal oxides in epoxy-rubber nanostructured compositions significantly decreases their permeability and increases their chemical resistance in water and water solutions of acids, salts, and alkalis (Figure 6.3) [8],... [Pg.200]

Ryblev, I., Blank, N., and Figovsky, O. Polymer Compositions Based on Epoxy-Rubber Binders, Building Materials no. 6 (1978) 37-39 (in Russian). [Pg.214]

One can rationalize a need for small rubber inclusions in some of the newer approaches to waterborne and high solids epoxy coating systems. Water-thinned epoxy coating compositions are described (48) where the two-component system consists of a nitrile rubber modified epoxy resin in the epoxide component and a styrene/ butadiene/methylmethacrylate latex modifier for an emulsion-based polyamide hardener component. Showing improved adhesion, impact and water resistance, the paint has good wetting characteristics and can be formulated to a high solids content at low viscosity. [Pg.10]

Polysulfides are used in synthetic rubber compositions [1], epoxy resin modifiers [2], coatings [3], adhesives [4], sealants [5], and many other products as described in recent Chemical Abstract issues. [Pg.74]

Thus, from the above data one could conclude that to achieve the maximal values of Kjc the method of modification with PER is most effective. Additionally, this method is more technologicsLlly apphcable because it can be used in formation of cold-cure compounds. Special attention must be paid to the correlation of the Kjc characteristic with X2,3 foi mixtures such as epoxy resin—modifier and curing agent-modifier. The presented characteristics of the ERG cracking resistance indicate the strong dependence of Kic on the structure of these materials, which enables the use of this characteristic in optimizing the compositions of new and already known epoxy rubber materials. [Pg.148]

Current Modifications of Epoxies. Particulate Toughening of Thermosets. . Rubber Toughening of Thermosets. . . Thermoplastic toughening of thermosets Epoxy Fibre Composites. ... [Pg.29]

Adhesives and sealants are manufactured from a variety of polymers. Their selection and their combinations used impact solvent selection. Most solvent systems are designed to optimize the solubility of the primary polymer. Adhesives can be divided into ones which bond by chemical reaction and ones which bond due to physical processes. Chemically reactive adhesives are further divided into three more categories for those that bond through polymerization, polyaddition, or polycondensation. Physically bonding adhesives include pressure sensitive and contact adhesives, melt, or solution adhesives, and plastisols. Polymerization adhesives are composed of cyanoacrylates (no solvents), anaerobic adhesives (do not contain solvents but require primers for plastics and some metals which are solutions of copper naphthenate), UV-curable adhesives (solvent-free compositions of polyurethanes and epoxy), rubber modified adhesives (variety solvents discussed below). [Pg.847]

Chen S, Wang Q, Wang T. Hydroxy-terminated liquid nitrile rubber modified castor oil based polyurethane/epoxy IPN composites damping, thermal and mechanical properties. Polym Test 2011 30(7) 726-31. [Pg.164]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...