Toughening of thermosets

Details Toughening of thermosets Toughening of thermosets

2003-06-27

2009-06-23

Feely, Michael J (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C521S050000, C521S056000, C521S060000

Reexamination Certificate

active

07550521

ABSTRACT:
A method of manufacturing thermosets such as epoxy resins includes adding expandable hollow microspheres, which expand with temperature as shown in the accompanying graph, to the base thermoset components in the liquid phase and applying heat treatment to the mixture so formed causing the micropsheres to expand during or after curing of the thermoset. This results in a toughening mechanism caused by compressive residual stress around the microspheres which significantly increases the specific fracture energy of the epoxy resin.

REFERENCES:
patent: 4751249 (1988-06-01), Wycech
patent: 4923902 (1990-05-01), Wycech
patent: 5385778 (1995-01-01), Deviney et al.
patent: 5403655 (1995-04-01), Deviney et al.
patent: 5470886 (1995-11-01), Makhlouf et al.
patent: 5712317 (1998-01-01), Makhlouf et al.
patent: 6403222 (2002-06-01), Harrison
patent: 6451876 (2002-09-01), Koshy
patent: 7047633 (2006-05-01), Morganelli et al.
patent: 2005/0027025 (2005-02-01), Erb et al.
patent: 01-249841 (1989-10-01), None
patent: WO 95/27000 (1995-10-01), None
patent: WO 02/24451 (2002-03-01), None
patent: WO 02/31077 (2002-04-01), None
Abstract of JP 01-249841, provided by the JPO website (1989).
Derwent Publications Ltd; Yokohama Rubber KK; Hydrocarbon foam as heat insulating material—comprising resin-bended hollow microspheres of both hydrocarbon and gloss material; YOKO 30/04/74-JA052387; 2 pages.
Derwent Publications Ltd; Yokohama Rubber KK; Hydrocarbon foam as heat insulating material—comprising resin-bended hollow microspheres of both hydrocarbon and gloss material; YOKO 30/04/74-JA052387; 2 pages, (1974).

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