Application of Titanate Coupling Agents in Mineral and Glass Fiber Filled Rim Urethane Systems

Abstract

Glass fibers are used in RRIM Urethane to pro vide dimensional stability and good physical properties- particularly impact strength. However, 1/16" milled glass fibers have the disadvantages of high cost (approximately 82¢/Ib.), anisotropic impact properties and difficult handling and process characteristics. Acicular type fillers, such as Wollastonite, provide tempting substitution possibilities because of lower price, isotropic impact properties and in herent easier handling. However, untreated Wollastonite grades provided inferior properties when compared to silane sized 1/16" milled fiberglass. Silane treated Wollastonite, G. Wollastokup 1100 0.5, has shown promise but falls short in the important area of impact.

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References

Bulletin No. KR-0278-7 Rev. #2, Reference Manual, Bibliography, Kenrich Petrochemicals Inc.

Modern Plastics, August 1981, Vol. 58 No. 8, Page 34.

German Patent No. 3038646, 13 October 1980, Sony Corporation.

U.S. Patent No. 4,269,756, May 26, 1981, Union Carbide Corporation.

Japanese Patent Appl. No. 29530/76, Hitachi Chemical Industries.

U.S. Patent No. 4,207,226, June 10, 1980, The Carborundum Company.

U.S. Patent No. 4,260,406, April 7, 1981, Corning Glass Works.

Private Communication, 22 January 1980 to S.J. Monte from T.J. Reinhart, Jr., Chief-Composites, Adhesives and Fibrous Matls. Br, Nonmetallic Materials Division, Dept. of the Air Force, Air Force Wright Aeronautical Laboratories, Wright-Patterson Air Force Base, Ohio 45433.

Private Communication, 12 March 1980 to S.J. Monte from T.J. Reinhart, Jr. (AFWAL/MLBC.)

10.

A. Damusis , P. Patel , "Titanate Coupling Agents for Use in Polyurethane Systems," Progress Report for the Kenrich Petrochemicals, Inc., July 27, 1981, Polymer Institute, University of Detroit.

11.

S.J. Monte , G. Sugerman , "Titanate Coupling AGents - Current Applications (IV," ACS Rubber Division. October 5-8, 1976, San Francisco, CA.

12.

Bulletin TD-79116 Revised 10/1/80, "Spensol L44, Water Dispersed Polyurethane Elastomer" Code 78444, Spencer Kellogg, Textron.

13.

Private Communication, August 19, 1981 to S.J. Monte from A. Damusis.

14.

E.G. Schwarz , F.E. Critchfield , L.P. Tackett and P.M. Tarin , "Silane Effects and Machine Processing in Reinforced High Modulus RIM Urethane Composites" SPI Reinforced Plastics/Composites Institute Paper 14C, 1979.