Epoxy/poly

Ambient-cure systems are often based on lower molecular-weight soHd epoxy resins cured with aUphatic polyamines or polyamides. Curing normally occurs at ambient temperatures with a working life (pot life) of 8—24 h, depending on the formulation. Epoxy—poly amine systems are typically used for maintenance coatings in oil refineries, petrochemical plants, and in many marine appHcations. Such coverings are appHed by spray or bmsh. These are used widely where water immersion is encountered, particularly in marine appHcations (see COATINGS, MARINE). 

They are generally used in the form of prepregs 70% fibres/30% matrix of epoxy, poly-imide or phenolic resin. 

Epoxy poly(butadiene) Poly(ethylacrylate-co-glycidylmethacrylate) Chlorinated poly(methylstyrene) Poly(iodostyrene)... 

Property Polyurea Epoxy Poly(cyclo pentadiene) Block copolyamide A-B-A... 

Epinephrine adrenaline or 4-[l-hydroxy-2-(methylamino)ethyl]-l,2-ben-zenediol hydrochloride EPDMA epoxy poly(dimethylacrylamide) ... 

These blends can take a number of different forms. The added resin may be reacted with the epoxy resin, or it may be included as an unreacted modifier. The modifier may be blended into a continuous phase with the epoxy resin (epoxy alloys) or precipitated out as a discrete phase within the epoxy resin matrix (as is generally done in the case of toughening modifiers). Epoxy hybrid adhesives are often used as film (supported and unsupported) or tape because of the ease with which formulated systems can be dissolved into solvent and applied to a carrier or deposited as a freestanding film. Some systems, notably epoxyurethanes and epoxy-poly sulfides, can be employed as a liquid or paste formulation because of the low-viscosity characteristics of the components. 

Much work has been reported on studying the structure of thermoset resins via SAXS, especially focussing on interpenetrating network polymers (IPNs), thermoset nanocomposites, rubber-modified thermosets and thermoset-thermoplastic blends. Most recently Guo et al, (2003) have examined the use of SAXS to monitor the nanostructure and crystalline phase structure of epoxy-poly(ethylene-ethylene oxide) thermoset-thermoplastic blends. This work proposes novel controlled crystallization due to nanoscale confinements. 

In this chapter experimental data for the nanocomposite epoxy poly-mer/Na -montmorillonite (EP/MMT) is considered. 

Applications of epoxy-polysulfide adhesives primarily include structural assemblies requiring some degree of resilience. Epoxy-poly sulfides are used in bonding concrete for floors, airport runways, bridges and other concrete structures, metals, glass and ceramics, wood, rubber, and some plastics. They are particularly durable in outdoor applications where temperature extremes (freeze-thaw cycles) will be encountered. Epoxy-poly sulfides can be heavily filled without adversely affecting their properties. 

Figure 7.8. A contour map of tensile strength for the epoxy/poly(/i-butyl acrylate) SIN pair. The crosslinker for the poly( -butyl acrylate), DEGDM, was held at the constant level of...

P. R. Scarito and L. H. Sperling, Effect of Grafting on Phase Volume Fraction, Composition, and Mechanical Behavior, Epoxy/Poly(n-butyl acrylate) Simultaneous Interpenetrating Networks, Polym. Eng. Sci. 19, 297 (1979). Epoxy/poly(n-butyl acrylate) SINs. Synthesis, morphology, mechanical behavior. Molecular mixing, effect on Tg in each phase. 

Wu S J, Lin T K, Zhang J X and Shyu S S (2000) Properties of cyanate ester-cured epoxy/poly-phenylene oxide blends as a matrix material for Kevlar fiber composites, J Adhes Sci Technol 14 1423-1438. 

Polyvinyl-acetate (nonre- Butadiene- Epoxy-poly su 1 fide Epoxy-polyamide Epoxy-coal tar binder... 

As it has been shown above (see the Eqs. (15.7) and (15.15)), the nanocluster relative fraction increasing results to polymers elasticity modulus enhancement similarly to nanofiller contents enhancement in artificial nanocomposites. Therefore, the necessity of quantitative description and subsequent comparison of reinforcement degree for the two indicated above nanocomposites classes appears. The authors of Ref. [58, 59] fulfilled the comparative analysis of reinforcement degree by nanoclusters and by layered silicate (organoclay) for polyarylate and nanocomposite epoxy poly-mer/Na" —montmorillonite [60], accordingly. 

Subsequently, further studies shed light on the importance of identifying the optical parameters [46] in studies of phase separation. When curing a thermoset/ thermoplastic blend, triglyddyl p-aminophenol (epoxy)/poly(ether sulfone) (PES), the originally homogeneous mixture became phase-separated via various... 

Poly(ether-ester) elastomer Epoxy Poly(tetramethylene oxide)-poly(hexamethylene tere-phthalate (AB)n block copolymer shown to toughen epoxy thermoset 154... 

Bmardic, M. Ivankovic, H. Ivankovic, and H. J. Mercer. Isothermal and nonisothermal cure kinetics of an epoxy/poly(oxypropylene)diamine/octadecyl-ammonium modified montmorillonite system. Journal of Applied Polymer Science, 100 (2006), 1765 1771. 

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