PULTRUSION
Pultrusion is a continuous method for producing constant
cross-section, reinforced shapes such as ladder rails,
beams, pipe, and tool handles. The reinforcement is
usually a combination of continuous strand roving, woven
roving, surfacing mat or veil, and reinforcing mat that
is pulled through a thermoset resin bath to wet out the
fibers. Excess resin is removed and the saturated
reinforcement is pulled through a heated die to shape and
polymerize the resin. Radiofrequency or microwave heating
may also be used to speed production rates. Most common
pultrusion materials are E glass rovings although
graphite, carbon, boron, polyester and polyamide fibers
can be used.usually with polyester, vinyl ester, and
epoxy resin systems. The finished shape is cut to length
by a cutoff saw. Very high strength parts are achievable
because glass reinforcement loading can be as high as
75%.
CT Processes | Participants | Links
Web Author: Terry Price (tprice@cerritos.edu)
Disclaimer
Last update: 11/14/01 |
