Issued patent
Blocking/Deblocking Resin Systems
An issued NASA patent from the Technology Transfer catalog.
About this technology
Overview
Similar to resin systems currently used in composites for aerospace structural applications such as toughened epoxies, this innovation is a modification to traditional resin chemistry to prevent polymerization and crosslinking of the resin when heated and pressed in an autoclave or other common resin curing system. The chemical modification uses blocking groups to block the reactive functional groups in the resin to prevent curing reactions from completing. The blocking groups can be removed by one of several means. Once deblocked, the resin can be cured in an identical manner to an unmodified resin system. The resulting structure is one continuous part without the need for additional fasteners.