论文信息 - Room Temperature Curing Epoxy Adhesives for Elevated Temperature Service

Room Temperature Curing Epoxy Adhesives for Elevated Temperature Service

Abstract Room Temperature curing compositions of epoxy resins with high temperature service capability (95–120°C) were formulated and evaluated. The compositions were based on selected high functionality atomatic epoxy polymers and multicomponent poly amine curing agent systems. Toughening was achieved by addition of a rubbery phase either by prereaction of the epoxy resin with carboxyl terminated (CTBN) or by amine terminated (ATBN) poly butadiene acrylonitrile. The latter elastomeric component served as a part of the poly amine curing agent. Best results were achieved with an adhesive formulation comprising tetra glycidyl-4-4′-diaminodiphenylmethane (TGDDM) and triglycidyl ether of p-aminophenol with triethylenetetramine and addition of ATBN with a felt carrier. Lap shear strengths of aluminum/aluminum specimens primed by silane coupling agent in the order of 22 MPa at 25°C and 11 MPa at 120°C with T-Peel strengths of 1.6N/mm at 25°C and 0.52 N/mm at 120°C, were obtained. The thermal behaviour and trans...

[1] Robert E. Smith,et al. Epoxy resin cure. II. FTIR analysis , 1984 .

[2] A. V. Pocius. Elastomer Modification of Structural Adhesives , 1985 .

[3] R. Assink,et al. Morphology and toughness characterization of epoxy resins modified with amine and carboxyl terminated rubbers , 1982 .

[4] J. Pascault,et al. Relationships between structure and mechanical properties of rubber‐modified epoxy networks cure with dicyanodiamide hardener , 1985 .

[5] J. K. Gillham,et al. Effect of the extent of cure on the modulus, glass transition, water absorption, and density of an amine-cured epoxy , 1983 .

[6] C. K. Riew,et al. Rubber Toughened Thermosets , 1976 .

[7] K. Armstrong. The design of bonded structure repairs , 1983 .

[8] R. Deanin,et al. Toughness and Brittleness of Plastics , 1976 .

[9] G. Levita,et al. Influence of the temperature of cure on the mechanical properties of ATBN/epoxy blends , 1985 .

[10] C. A. May,et al. Epoxy Resins: Chemistry and Technology , 1973 .

[11] F. Mcgarry,et al. Effect of rubber particle size on deformation mechanisms in glassy epoxy , 1973 .

[12] D. H. Richards,et al. An aliphatic amine cured rubber modified epoxide adhesive: 1. Preparation and preliminary evaluation using a room temperature cure , 1977 .