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Chapter One APPLICATIONS Alternate Reinforcement Materials The field of composites gives the designer the freedom to use various different reinforcement materials to improve structural performance over fiberglass. Carbon and aramid fibers have evolved as two high strength alternatives in the marine industry. Each material has its own advantages and disadvantages, which will be treated in a later chapter. Suffice it to say that both are significantly more expensive than fiberglass but have created another dimension of options with regards to laminate design. Some low-cost reinforcement materials that have emerged lately include polyester and polypropylene. These materials combine moderate strength properties with high strain-to-failure characteristics. Infusion Methods In an effort to reduce styrene emissions and improve the overall quality of laminates, some builders are using or experimenting with resin infusion techniques. These processes use traditional female molds, but allow the fabricator to construct a laminate with dry reinforcement material called preforms. Similar to vacuum methods, sealant bags are applied and resin is distributed through ports using various mediums. In general, fiber content of laminates made with infusion methods is increased. Various infusion methods are described in Chapter Five. 11PDF Image | Marine Componsites
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