Cold cure process

Vinyl ester resins generally offer mechanical properties superior to those of polyester matrices but at an increased cost. Vinyl esters are chemically similar to epoxy resins but are manufactured via a cold-curing process similar to that used in the manufacture of polyester resins. Vinyl esters offer superior resistance to water and chemical attack and are used in such appHcations as underground pipes, tank liners, and storage tanks (see Vinyl polymers). 

Use in cold-cure process of vulcanizing in the proofing of cloth with rubber... 

S2C12, a by-product in the manufacture of carbon tetrachloride from carbon disulphide. Was used, dissolved in solvent naphtha, in the vulcanising of mbber by the cold cure process and the vapour cure process. The process was fraught with health and safety problems and has been superseded by low temperature accelerators and room temperature vulcanising (RTV) systems for silicone and polyurethane. 

Weakening of a fabric from any cause, but particularly the weakening of a proofed fabric by the acid resulting from insufficient sweetening, after vulcanisation by the cold cure process. Tensile Strength... 

PHD polyols are successfully used for high resilience flexible PU foams (made by the cold cure process), for continuous slabstock flexible PU foams and for elastomers obtained especially by reaction injection moulding (RIM) technology. 

Amines only attack the epoxy end groups. The addition of a proton donor is necessary since completely dry amines do not react (cf. the polymerization of ethylene oxide. Section 19.2.1). The amine curing is of commercial interest, because it is usually a cold-cure process, i.e., it often progresses without any external heating being required ethylene diamine,... 

Cold-Curing Process of curing at normal atmospheric temperature. (i.e., air dry). 

Special-Purpose Resins, Repair Resins. Fractured acryflc dentures can be repaired with materials similar in composition to cold-cured denture resins. These materials generally cure more rapidly because of the relative simple manipulations involved. The process is quick and there is fltde dimensional change, but the strength of the repaired denture may be only half that of the original appliance (213). Test methods and requirements of these materials are given in ANSI/ADA specification no. 13 for denture cold-curing repair resins. 

Parallam, or laminated strand lumber (LSL) is a beam made by a continuous manufacturing process composed of bigger-size wood needles (very elongated wood particles) reassembled with a structural exterior grade adhesive, the favorite adhesive being isocyanates (pMDI) when heat-curing and PRFs when cold-curing. 

Any method of vulcanising rubber products which proceeds without interruption from start to finish as compared to the method of vulcanising separate batches of products or sections of a product. Continuous vulcanisation processes include the cold curing of proofed cloth, the vulcanisation of belting and flooring, of cables and certain extruded products by either the Liquid Curing Medium, Fluid Bed, Microwave, or Hot Air techniques. 

The process of treating cold-cured proofings with a weak alkali to neutralise any remaining acid and so prevent subsequent tendering of the fabric. Swelling... 

The main limitation to the clinical use of the MAOIs is due to their interaction with amine-containing foods such as cheeses, red wine, beers (including non-alcoholic beers), fermented and processed meat products, yeast products, soya and some vegetables. Some proprietary medicines such as cold cures contain phenylpropanolamine, ephedrine, etc. and will also interact with MAOIs. Such an interaction (termed the "cheese effect"), is attributed to the dramatic rise in blood pressure due to the sudden release of noradrenaline from peripheral sympathetic terminals, an event due to the displacement of noradrenaline from its mtraneuronal vesicles by the primary amine (usually tyramine). Under normal circumstances, any dietary amines would be metabolized by MAO in the wall of the gastrointestinal tract, in the liver, platelets, etc. The occurrence of hypertensive crises, and occasionally strokes, therefore limited the use of the MAOIs, despite their proven clinical efficacy, to the treatment of atypical depression and occasionally panic disorder. 

Coefficient of thermal expansion Cold cure The rate at which a material expands per degree of temperature. Casting process for the production of elastomers, in which the elastomer is mixed, dispensed, and cured at or near room (ambient)... 

This is an extension of the cold forming process. It uses thermoformed B-stage thermoset reinforced plastic (RP) skin to improve surface and other characteristics to a cold molded thermoplastic. The mold is closed and the fast, room temperature curing RP plastic system hardens. The finished product has the smooth TP-formed sheet. 

The emission rates for thermosetting PUR adhesives can be expected to be higher than for cold-curing adhesives by a considerable margin, since gas phase-controlled outgassing occurs up until the start of the crossUnking process and volatility of course increases with temperature. 

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