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US 4,626,642 AGranted
Microwave method of curing a thermoset polymer
AssigneeGeneral Motors Corporation
InventorsChen-Shih Wang, Darrel S. Nelson
Life of this patent
Estimating the term…
Abstract
A method of rapidly curing a thermoset polymer by blending and dispersing a quantity of electrically conductive fibers into the polymer and subjecting it to microwave radiation.
Claims2
A method of rapid curing a thermoset polymer used as an adhesive in the bonding of automotive plastic components comprising the steps of:
- blending and dispersing into said thermoset polymer less than sixty weight percent of total weight electrically conductive metal fibers selected from the group consisting of steel and aluminum, said fibers having a minimum average aspect ratio of 5 and a maximum average diameter of 500 microns,
- bonding said automotive plastic components together with said fiber containing thermoset polymer adhesive and clamping under sufficient pressure such that said automotive plastic components are in intimate contact with said fiber containing thermoset polymer adhesive,
- establishing a field of microwave energy for a time period of at least 10 seconds across the thermoset polymer for inducing sufficient electrical energy in said fibers such that heat is generated to rapidly cure said thermoset polymer and bond said automotive plastic components together.
A method of rapid curing a thermoset adhesive comprising the steps of:
- blending and dispersing into said thermoset adhesive a quantity of electrically conductive fibers having a minimum average aspect ratio of 5 and a maximum average diameter of 500 microns,
- establishing a field of microwave energy across the thermoset adhesive for inducing sufficient electrical energy in said fibers such that heat is generated to rapidly cure said thermoset adhesive.
Dependencies are inferred from the claim text.