Adhesion epoxies

Urethane sealants have good inherent adhesion to most substrates, but silane adhesion promoters are often used to improve this adhesion. Epoxy-, amino-, and mercapto-functional silanes are the most common because of their dual reactive nature. The silane end can react with surface hydroxyls the epoxy, amino, or mercapto end can react with the isocyanate. [Pg.311]

Epoxy resins have outstanding mechanical and electrical properties, dimensional stability, resistance to heat and chemicals, and adhesion to other materials. They are used for casting, potting, encapsulation, protective coatings, and adhesives. Epoxy glues separate the resin from the curing. igciU to be mixed just prior to use. [Pg.279]

Adhesion Epoxy Bonding reinforcements on external surface of combustion chamber... [Pg.119]

Epoxy resins find a large number of uses because of their remarkable chemical resistance and good adhesion. Epoxy resins are excellent structural adhesives. When properly cured, epoxy resins can yield very tough materials. They are used in industrial floorings, foams, potting materials for electrical insulations, etc. One of the principal constituents in many of the Fibre-reinforced plastics (FRP) is an epoxy polymer. [Pg.174]

Another example is concerned with epoxy adhesives. Epoxies are best, but an alloy such as epoxy-phenolic or epoxy-polysulfone may offer improved peeling... [Pg.138]

Considering thermodynamics of adhesion, epoxy/novolac epoxy resins play a vital role for bonding applications especially for inhibition of composite propellants. In view of this fact, it is considered worthwhile to discuss the chemistry of epoxy/novolac epoxy resins in this section before we discuss other systems for this purpose. [Pg.302]

Glass transition temperatures were determined refractometrically, as described by Wiley (20), with an Abbe refractometer supplied by Bellingham and Stanley. This instrument can normally be used only at temperatures up to 70°C. The prisms of this instrument were coated with a heat resistant adhesive (epoxy-phenolic resin mixture). After this modification the refractometer can be used at temperatures up to 200°C. [Pg.190]

Some specs under which these structural adhe-sivesmay be procured are MIL-A-5090B, "Adhesive Airframe, Metal to Metal MIL-A-8431, "Adhesive, Heat Resistant, Airframe Structural, Metal to Metal MIL-A-8623A, Adhesive, Epoxy Resin, Metal to Metal Structural Bonding and MIL-A-14042, "Adhesive, Epoxy ... [Pg.242]

Polymers are very large molecules made up of repeating units. A majority of the compounds produced by the chemical industry are ultimately used to prepare polymers. These human-made or synthetic polymers are the plastics (polyethylene, polystyrene), the adhesives (epoxy glue), the paints (acrylics), and the fibers (polyester, nylon) that we encounter many times each day. It is difficult to picture our lives without these materials. In addition to these synthetic polymers, natural polymers such as wood, rubber, cotton, and wool are all around us. And, of course, life itself depends on polymers such as carbohydrates, proteins, and DNA. This chapter discusses synthetic polymers. Naturally occurring polymers are presented in Chapters 25, 26, and 27. [Pg.1053]

As with amidoamine and polyamide cured adhesives, epoxy resins cured with aliphatic amines exhibit tensile shear strength that is dependent on the type of filler and concentration. Table 11.10 shows the effect of filler loading on strength of a simple general-purpose, room temperature curing epoxy adhesive composed of liquid DGEBA epoxy mixed with 10 pph of a tertiary amine. [Pg.209]

Typically tape or film epoxy adhesives are modified with synthetic thermoplastic polymers to improve flexibility in the uncured film and toughness in the cured adhesive. Epoxy resins can also be blended with phenolic resins for higher heat resistance. The most common hybrid systems include epoxy-phenolics, epoxy-nylon, epoxy-nitrile, and epoxy-vinyl hybrids. These hybrid film adhesives are summarized in Table 13.2, and structural properties are shown in Table 13.3. [Pg.248]

TRADE NAMES AND MANUFACTURERS EPOXY ADHESIVES, EPOXY RESINS, CURING AGENTS AND CATALYSTS, ADDITIVES AND MODIFIERS... [Pg.461]

Starting formulation for a flexible epoxy adhesive containing polyamide curing agent and reactive diluent Starting formulation for a high-peel-strength adhesive Epoxy-polysulfide adhesive formulation Formulation for a flexible epoxy-polysulfide adhesive Epoxy-polysulfide adhesive formulations... [Pg.485]

Adhesive, Epoxy Resin, Metal to Metal Structural Bonding Strong Linoleum Cement Adhesive, Metal to Wood... [Pg.520]

The Chemistry of Structural Adhesives Epoxy, Urethane, and Acrylic Adhesives... [Pg.591]

Bostik, Inc., formerly Bostik Findley, Inc., is a leading global producer of adhesives and sealants. The firm operates in five segments construction and distribution performance adhesives nonwovens/tape and label global transportation and flexible laminating. The construction and distribution division manufactures flooring installation adhesives for tile, stone, hardwood, carpet and vinyl caulks, elastic adhesives, aerosol adhesives, fire-retardant adhesives, epoxies,... [Pg.184]

Laminating adhesive - epoxy amine (polyurethane backbone)... [Pg.362]

Adhesives. Epoxy-polysulphide adhesives are elastomeric in nature. Therefore, they can withstand movement and vibration. They reduce stress between dissimilar bonded materials. They are used as... [Pg.204]

Nevoxy . [Neville] Hydroxy modified resin us in adhesives, epoxy coat-... [Pg.248]

Once. [Hardman] Hand cleanser for re-movd of resins, adhesives, epoxies, gasket cement, paint, pitch, polyester, silicones, tars, urethanes, carbon black, dirt, grease, grime, inks, putty. [Pg.263]

The reinforcing fabrics used were aramid (Kevlar DuPont) and poly(p-pheny-lene-2,6-benzobisoxazole) (PBO) (Zylon Toyobo). The fabrics were first treated with a 1.5% solution of HB PAMAM (AD-102), dried, then interleaved with an epoxy film structural adhesive (epoxy stage B on polyester net), and compression-molded for 90 min at 120 °C. For the aramid-based composite, FM-73 (Cy-tec) was used as the matrix. For the PBO-based composite, AF-191 (3M) was used as the matrix. The laminates were cut into strips and tested for interlaminar shear strength (ASTM D-2344) using a three-point bending instrament. [Pg.221]

Fig. 25.1 Ultrasonic transmission data for a sample of two aluminum plates 4 mm thick bonded together by an adhesive epoxy layer of 30 p,m thickness showing the measure of the interface strain amplitude Bi = 2- /e — versus the input strain amplitude i and the linear fit of the first 12 measuring points.

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