Engineeringplastics have displaced traditional engineering materials like metaland wood in most cases. They are preferred due to their bettermechanical properties, which are better able to withstand theenvironmental impacts like heat and moisture. Examples of engineeringplastics include, nylon 6, polyacrylate, chlorinatedpolyacrylate, thermoplastic polyacrylate, nylon thermoplasticpolyacrylate, thermoplastic polystyrene, acrylonitum, polyamide,polyimide, and Nylon 6. All these materials are used extensively indifferent applications, including airplane parts, boats, autobumpers, bicycle tires, handbags, jewelry, glasses, furniture andmore.
TheCovid-19 pandemic has led to increasing demand for personalprotective gear made from Nylon 6. Inthe U.S., from 3 January 2020 to 5:16pm CEST, 28 April 2021, therehave been 31,783,375 confirmed cases of COVID-19 with 567,327 deaths,as reported to the World Health Organization. Such scenario isexpected to increase demand for personal protective gear and Nylon 6eventually.
Themechanical properties of engineering plastics are high-performanceones that make them ideal for a wide range of applications. They aremore durable than their counterparts and offer good resistance towear and tear. Additionally, they are able to provide increasedstrength-to-weight ratio, increased flexibility and reduced weightboth when manufactured as ready molded plastic parts and after theyare cured in various heat curing processes. Such characteristics makeplastics excellent components for a wide range of goods.
Forinstance, engineering plastics made from ABS can be used to makebumper stabilizers for trucks and SUVs. These materials have bettermechanical properties than conventional bumpers because they featurespecial bracing systems that increase the vehicle's structuralintegrity. Plastic materials with high stiffness also offer betterprotection against rollover accidents.
Otherplastic materials that have better mechanical properties includepolyamides and polyimide. Polyamides are made through the process ofthermoforming, while polyimide is created through the process offolding and rolled sheets of polymerized polyimide. Both materialshave good heat Deflection Temperature (HDT), which refers to the rateat which the plastic degrades at specific temperatures.
Polyimideis able to maintain its structural integrity across a wide range oftemperatures and does not degrade much in heat. The polyamides andpolyimides are also resistant to acid attacks, which is why they areoften found in the lining of soft drinks can linings, diapers, foodpackaging and other such products. In addition, engineering plasticswith high hardness are also commonly used in various aerospaceapplications such as bumpers and landing gears. As polyimide isthermally resistant, it is able to withstand high-impact andhigh-pressure situations. Its ability to form very small shapes makesit ideal for use in soft-tissue engineering materials.
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