Fastener shape-memory polymer has fastening function by a part of post forming. Secondary reshaping fastening part mainly is configured to be formed no fastening function before prefabricated component, and it is good that fastener loses fastening performance, easily can be higher than its glass transition point by the heat resolve fastener. Carry out secondary reshaping formed or thermosetting/freezed off by cold plastics it is fixed. Shape-memory polymer is for being much higher than room temperature, and polyurethane shape memory polymer is selected in restorability and glass transition temperature adjustable area with big shape.
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