Mechanical Properties of Miscellaneous Polymers

Sims et al. [25] reviewed some UK contributions to the development of fiber-reinforced plastics such as those used for glass-reinforced plastic pressure vessels and pipes. He also discussed the need for harmonizing and validating the many variants of property testing methods currently in use. 

Chen and Lein [26] have described a proprietary process for the manufacture of pultruded hybrid fiber (glass/carbon)-reinforced unsaturated polyester composites. To investigate the effect of reinforcement type and content on the properties, composites with various fiber contents were fabricated. Flexural strength, flexural 

Chen et al. [29] have carried out a detailed study of the methods for the prediction of the long-term behavior of rods of glass fiber-reinforced vinyl ester resin nsed to reinforce concrete building structure. As a measure of durability, tensile strengths are reported for bars of this material before and after exposure to alkaline solutions. In a typical example, the tensile strength of the exposure of glass fiber-reinforced vinyl ester resin changes from 100% to 80% after 400 days exposure and from 100% to 60% after 800 days of exposure to concrete. 

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