Accession Number : ADA307112

Title :   Room Temperature-Cured Polyurethane Elastomers.

Corporate Author : DOW CHEMICAL CO MIDLAND MI

Personal Author(s) : Bylsma, H. R. ; Pitchforth, L. L., Jr

PDF Url : ADA307112

Report Date : 18 OCT 1962

Pagination or Media Count : 26

Abstract : For almost ten years in the United States, the words 'urethane elastomer' have excited new ideas about elastomers which were sought as a panacea to many difficult problems. The majority of research done and papers published have described new materials which were suitable for very abrasive, high tensile strength or high temperature uses. Rubber wheels which were very abrasion resistant, slurry pumps, automotive parts exposed to high temperatures, and top lifts were applications where cost was less important than the actual physical behavior and long life of the formed item. Within the last two to three years much more interest has developed in urethane elastomers which are competitive in price and properties with more conventional materials, such as vinyl plastisols, GRS rubber, neoprene, and other more reasonably priced materials. It is this type of research which will be presented here, describing urethane elastomers which are castable and curable at ambient conditions, to give elastomers having up to 1000 psi tensile strength, 200 to 300% elongation, and less than 1% compression set. These elastomers also incorporate fillers which lower the cost and improve the physical properties.

Descriptors :   *ELASTOMERS, *POLYURETHANE RESINS, TENSILE STRENGTH, STRENGTH(MECHANICS), ROOM TEMPERATURE, CROSSLINKING(CHEMISTRY), HIGH STRENGTH, WHEELS, CURING, HARDNESS, ELONGATION, AUTOMOTIVE COMPONENTS, WEAR RESISTANCE, FILLERS, NEOPRENE, URETHANES, GLYCOLS, ABRASION.

Subject Categories : Elastomers and Rubber

Distribution Statement : APPROVED FOR PUBLIC RELEASE