Vinyl plastisol adhesive

Weldbonded aluminum joints (1-mm aluminum alloy 2036-T4) where compared with spot welded aluminum (1-mm aluminum alloy 2036-T4) and spot welded steel (1-mm steel 1010) joints.45,46 Weldbonded 2036-T4 joints made with a vinyl plastisol adhesive and with a one-part modified epoxy had a fatigue strength about twice that of the spot welded aluminum alloy and approximately the same as that of the spot welded steel. The fatigue strength of the weldbonded aluminum joints with polysufide-epoxy adhesive or with high-peel-strength epoxy adhesive is higher than that of steel spot welds alone. 

Many different adhesives have been tested and used in weldbonding. These include both high-strength structural adhesives, such as modified epoxies, and relatively low-strength adhesives, such as vinyl plastisols or epoxy-polysulfides that are commonly used for sealing and vibration damping. Table 14.10 shows that a variety of adhesives and substrates are compatible with the weldbonding process. 

Hercolyn . [Hercules] Rosin derivs. plasticizer/taddfier fix lacquers, inks, adhesives, floor tiles, vinyl plastisols, artificial leather, and antifoaling paints fixative and carrier in perfumes and cosmetic preps. 

A novel, latent curing system, which gives more than one year pot life at room temperature, has increased the use of epoxies for specialty adhesives and sealants, and for vinyl plastisols. The one-pack system provides fast cure when heated—for example 5 min at 100°C. 

More recent efforts have focused on developments that create true hybrids. For example, blocked isocyanate prepolymers have been mixed with epoxy resins and cured with amines [68-70]. These blocked prepolymers will react initially with the amines to form amine-terminated prepolymers that cross-link the epoxy resin. Several blocked isocyanates are commercially available. The DESMOCAP (Bayer) llA and 12A products are isocyanates (believed to be blocked with nonylphenol) used as flexibilizing agents for epoxy resins. ANCAREZ (trademark. Pacific Anchor, Inc.) 2150 is a blocked isocyanate epoxy blend used as an adhesion promoter for vinyl plastisols. A one-package, heat-cured hybrid adhesive was reported consisting of isophorone diisocyanate, epoxy resin, and a dispersed solid curative based on the salt of ethylenediamine and bisphenol A [71]. Urethane amines are offered commercially that can be used with epoxy resins to develop hybrid adhesive systems [72]. 

CAS 471-34-1 EINECS/ELINCS 207-439-9 Uses Pigment, filler, extender, reinforcer, and bodying agent in plastics (thermoset polyester, PVC), vinyl plastisols, rubber (NR, SBR, CR, HR), adhesives, sealants, caulks, paints, coatings, printing inks, extrusions, moldings, belts, footwear chem. reagent, carrier, calcium source Features Nonabrasive controlled particle size easily dispersed Properties Powd. 0.8 p median particle size 0.015% on 325 mesh ... 

Chem. Descrip. Aminopropyltriethoxysilane CAS 919-30-2 EINECS/ELINCS 213-048-4 Uses Adhesion promoter for solv., water-based, solventless, and powd. system coupling agent tor metal treatment resin additive in mineral-reinforced polyester resin improves chem. bonding of resins to inorg. surfaces pigment treatment effective as primer or additive, esp. in epoxy, phenolic, PU, vinyl plastisols and imide systems food pkg. adhe-siv6s... 

Chem. Descrip. Methyl/alkylaryl silicone fluid Uses Release agent for mold metal, plastic, or nrbber parts internal lubricant in rubber, vinyl plastisols also for foundry, adhesive, org. coatings applies. 

Uses Flame retardant, plasticizer for PVC and copolymers, PVAc, acrylics, finished film or coated fabric applies., vinyl plastisols, PVC adhesives, ethyl cellulose, NC, SBR and butyl rubbers plasticizer for flooring, cast and calendered free film and sheeting, extrusion, slush molding, inks, coatings, adhesives, sealants, elastomers, plastisols, wire and cable... 

Adhesives recommended include modified epoxies, modified phenoUcs, epoxy-phenolics, neoprene-phenolics, second-generation acrylics, cyanoacrylates, silicone rubbers, and vinyl plastisols. Sell has ranked a number of adhesives in the order of decreasing durability with aluminum adherends as follows ... 

It should be mentioned that acceptable bonds have been obtained in the auto-manufacturing industry using untreated and oily steel surfaces employing hot-curing adhesives, like the vinyl plastisols or specially formulated one-part epoxies.( i i27)... 

Copolymers of vinyl chloride are used both as solid resins, for example, in solvent adhesives (vinyl chloride-vinyl acetate copolymers), and as additives in plastisol adhesives, but especially as synthetic resin emulsions for heat-sealing adhesives. Important copolymers are those of vinyl chloride with vinyl acetate, acrylates, or maleates, as well as copolymers of vinylidene dichloride with acrylates or acrylonitrile. 

Solvent adhesives and reactive adhesives are made from homo- and copolymers of methacrylates, generally methyl and ethyl methacrylate and, occasionally, butyl methacrylate. Monomeric (meth)acrylates are also used in reactive adhesive systems (polymerization adhesives). Poly(ethyIene glycol) dimethacrylates are the basis of anaerobically curing liquid resins (reactive adhesives). They also are added as adhesion promoters to plastisol adhesives. Acrylate-ethylene copolymers, in some cases with a small content of carboxyl groups, are used instead of ethylene-vinyl acetate copolymers as fusible polymers for special hot-melt adhesives. Salts of polyacrylate and acrylate - acrylic acid copolymers are used as thickeners for aqueous adhesive solutions and emulsion-based adhesives. 

Epoxy resins are also combined with phenolic resins and poly(vinyl acetate) resins and used as adhesion promoters, for example, in plastisol adhesives. 

Vinyl dispersion resins have typically consisted of inert homopolymer or copolymers of vinyl chloride and vinyl acetate, and although the inertness has been of importance for a multitude of applications, there are occasions when reactive functionality is an aid. An example of such a reactive vinyl resin is Geon 137, a carboxyl modified dispersion resin with a carboxyl content equivalent to 1.79% on a resin weight basis or an acid equivalent weight of about 2500. One adhesive application of considerable interest is in the production of flocked product, notably wall and floor coverings. A 50% replacement of standard copolymer dispersion resin with carboxyl functional resin doubles the force required to pluck fibers loose. Test results of laminating carboxylic vinyl plastisol with nylon fabric have shown a threefold increase in adhesion. Such plastisols also show improved adhesion to glass and polyester fabrics. ... 

Poly(vinyl chloride) is used as a plastisol (dispersion with plasticizers), solution, or water dispersion. It is a good cement for pipes and is used extensively as an adhesive in automobiles. 

The presence of a plasticizer in addition to the carboxylated polyester adversely affected the adhesion of some of the polymers—e.g., cellulose acetate butyrate and poly (vinyl chloride) plastisols. 

Flame retarding plasticizer used in cellulose, polyester and polyurethane. Mainly used in the manufacture of electrical (wire and cable) and automotive plastic parts. May also be used for die preparation of vinyl sheets, fabric coating, plastisols and organosols, adhesives, vinyl packing materials, and conveyor belts. 

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