By Robert C. Klingender
This quantity presents a unmarried resource reference for the layout of compounds utilizing elastomers which are warmth, oil, and gasoline resistant. those contain polychloroprene, nitrile rubber, hydrogenated nitrile rubber, fluoroelastomer, polyacrylate, ethylene acrylic rubber, polyepichlorohydrin, chlorinated polyethylene, and different such area of expertise elastomers. The authors have integrated sections on antioxidants, antiozonants, vulcanization brokers, plasticizers, and procedure aids. The publication concludes with a bankruptcy on molding, supplying an instance of the various issues concerned about designing a rubber compound for a given software. This instruction manual areas wanted info on the fingertips of skilled rubber compounders who desire to layout compounds inclusive of strong point elastomers.
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Extra resources for Handbook of Specialty Elastomers
Special plasticizers are very effective in lowering the glass transition temperature and improving rebound resilience. These products are needed for articles in which resilience is required down to approximately À458C. Unfortunately, such plasticizers also promote the crystallization rate, so that polymers with low crystallization tendency have to be chosen. Highly aromatic mineral oils can be recommended for compounds where a reduction in crystallization rate is required. This class of plasticizers is also compatible, so that 50 pphr or even more can be used without exudation effects.
6 Miscellaneous Some other applications are rollers for the printing and textile industry, coated fabrics, membranes, air bags, tank linings, closed cell sponge surf, and diving suits. REFERENCES 1. A. Nieuwland, ‘‘Acetylene Reactions, Mostly Catalytic,’’ paper presented at First National Symposium on Organic Chemistry, ACS Dec. 29–31, 1925. Rochester, NY. 2. M. Collins, ‘‘The Discovery of Polychloroprene,’’ Rubber Chem. , 46(2): 48, June–July, 1973. 3. S. B. A. C. , John Wiley and Sons, NY, pp.
This class of plasticizers is also compatible, so that 50 pphr or even more can be used without exudation effects. Among other mineral oil plasticizers, napthenic oils have gained importance where staining due to leaching and migration must be avoided. Their compatibility is somewhat limited depending on the compound formulation. Check with local health regulations on the use of highly aromatic oils as some are suspected carcinogens. Parafﬁnic oils are of very limited compatibility, so that they ﬁnd only restricted application.