Pultrusion is a continuous process that permits to produce composite profiles with a constant cross-section without limit in length. The polyester resins used by Fibraworld are all thermosetting. The difference between thermosetting and thermoplastic is that the first one can't be converted in other shape by heating. One of the main advantages of pultrusion is that it's possible to change resin formulations in order to modify drastically the final properties of the profile.
There are additives that assigns self-estinguishing properties, other that improve the smoothness of the surface and others for UV Protection. Pultrusion machine design can vary as part geometry can differ. The two main types of pulling systems used to create FRP profiles are reciprocating hand-over-hand and continuous cat-track.
The rovings of fiber reinforcements are positioned by the creels for continuous feeding onto the guide plate. To ensure strength and quality, the fiber reinforcements must be positioned accurately within the finished composite. The resin impregnator is optimally designed to completely saturate the fiber reinforcements in a resin bath or wet out that consists of either epoxy, polyurethane, polyester or vinyl ester. Fillers and other additives such as colors, fire inhibitors and UV retardants can be included to improve the lasting performance of the composite.
What is the benefit of using pultrusion technology? Pultrusion - Mechanical characterization for simulation purposes. This video provides an overview of the mechanical properties, and how those can be tailor with the fiber architecture design. Why work with BASF? We have developed multiple materials specifically for use with pultrusion to increase performance and output.
Modeling - One of the biggest challenges is the ability to predict the behavior of composite materials. They have anisotropic properties and will behave differently after the initial point of failure where the fiber and matrix begin independently.
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