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thermosets |
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thermosets, materials that can not be softened on heating. In thermosetting polymers, the polymer chains are joined (or cross-linked) by intermolecular bonding. Thermosets are usually supplied as partially polymerized or as monomer-polymer mixtures. Cross-linking is achieved during fabrication using chemicals, heat, or radiation; this process is called curing or vulcanization. Important thermosets include phenolics, ureas, melamines, epoxies, polyesters, silicones, rubbers, and polyurethanes. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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What hot runners are to thermoplastics, cold runners are to thermosets like liquid silicone rubber (LSR). Composite Solutions: Thermosets and Thermoplastics. The 45% glass-reinforced PPA reduced both the weight [by 60%] and the wall thickness of the "power piston" of Delphi's new vacuum brake boosters when compared to traditional thermosets. |
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