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Polyester
Polyester resins, in thermoset, glass fiber-reinforced formulations, have been used for a variety of industrial, marine, and consumer products for at least 40 years. These are the materials of "fiberglass" boats, fishing rods, and automobile body panels. More recently, thermoplastic grades
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Stick With the Right Adhesive
and cyanoacrylates, hot melts, reactive urethanes, epoxies, polyurethanes, and two-part acrylics. are one-part adhesives that remain liquid in air but cure into tough thermoset plastics when confined between metal substrates. Anaerobic adhesives typically are used to lock and seal threaded assemblies, retain
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Welding Options For Molded Parts
) or ultrahigh-molecularweight PE (UHMPE). And cross-linked materials, which are in some respects similar to thermoset plastics, don't easily weld to HDPE either. First, the welding area must be clean. Surface oxidation and other contaminants such as grease, dust, and damaged material all must be removed. Surface
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Laser Welding Carbon Nanocomposites
Carbon nanocomposites consist of thermoset or thermoplastic materials filled with carbon nano-particles (nanotubes, bucky balls, etc.). This new and innovative group of materials offers many advantages over standard polymers such as electrical/thermal conductivity and improved structural properties
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Secrets of Bond Strength
the maximum strength and long-term resistance to deterioration is through a chemical or electrolytic pretreatment, particularly on thermoset and thermoplastic surfaces. Molded, cast, and laminated parts made f rom thermos et plastics such as glass-reinforced epoxy (GRE), glass and carbon-reinforced
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Predicting plastic part life
Dynamic mechanical analysis helps designers build longer lasting products. Edited by Jean M. Hoffman DMA testing helps determine the effect of different curing conditions on thermoset polyester products. DMA demonstrates the degree of cure based on the stiffness and glass transition temperature
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GE brings more good resins to life
. "It is a recyclable alternative to bulk-molding compounds (BMCs) in automotive applications. And has better optics and moldability than competing thermoset resins.". A high-flow HPP, Ultem ATX200, reportedly has three times the flow at lower molding temperatures than current ATX resins
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Guidelines for Bonding Plastics
there is a need to repeat-edly assemble and disassemble the joint. When determining the best adhesive for an application, a lot depends on the substrate. Plastics are broadly characterized as thermoset materials or thermoplastics. Once polymerized, thermoset plastics such as polyester, phenolic