The primary advantage of thermoplastics is their wide range of applications. Thermoplastics are high strength, lightweight materials and have relatively low processing costs. Additionally, thermoplastic components are relatively easy to manufacture with high volume and precision. The primary disadvantage of using thermoplastics instead of materials such as metal is their relatively low melting point.
Certain types of low-quality thermoplastics can melt when they're exposed to the sun for extended periods. Furthermore, thermoplastics can have poor resistance to organic solvents, hydrocarbons, and highly polar solvents. Thermoplastics are susceptible to creep, which occurs when the material stretches and weakens under exposure to long-term stress loads.
The susceptibility to creep is further exacerbated by the lower melting temperature of the material. Other types of thermoplastics, such as composites, can fracture instead of becoming deformed under high-stress conditions. Types of thermoplastics commonly employed for manufacturing include polyethylene PE , polyvinyl chloride PVC and polystyrene PS , which often is used for packaging.
Other groups of thermoplastics are acrylics, fluoropolymers, polyesters, polyimides, and nylons. All of these types can be melted down repeatedly and re-shaped into different forms. For example, a foam cup is a thermoplastic material man be re-melted and fabricated into a dish. Thermosets and thermoplastics come in a wide range of material options and can serve different applications as long as the limitations of the material are not likely to cause product failure under the intended operating conditions.
The basic features of these materials remain the same: high versatility and recyclability. When it comes to useful applications in the real world, you would be hard-pressed to find a better example than the production of plastics through these two processes. Guides Share:. Introduction— Thermoset vs Thermoplastic The primary difference between the two is that Thermoset is a material that strengthens when heated, but cannot be remolded or heated after the initial forming, while thermoplastics can be reheated, remolded, and cooled as necessary without causing any chemical changes.
What are Thermoset Plastics? A pplication of Thermosetting Plastics Thermoset plastics offer enhanced high-performance combination of thermal stability, chemical resistance, and structural integrity. Advantages of Thermosets The use of thermoset plastics has a number of advantages. Hard and rigid Much more difficult to surface finish. Excellent aesthetics finishes Cannot be remolded or reshaped.
The primary physical difference is that thermoplastics can be remelted back into a liquid, whereas thermoset plastics always remain in a permanent solid state. Think of thermoplastics as butter — butter can be melted and cooled multiple times to form various shapes. Thermoset is similar to bread in that once the final state is achieved, any additional heat would lead to charring.
Thermoset plastics contain polymers that cross-link together during the curing process to form an irreversible chemical bond. The cross-linking process eliminates the risk of the product remelting when heat is applied, making thermosets ideal for high-heat applications such as electronics and appliances.
Thermoplastics pellets soften when heated and become more fluid as additional heat is applied. Measure ad performance. Select basic ads. Create a personalised ads profile. Select personalised ads. Apply market research to generate audience insights. Measure content performance. Develop and improve products. List of Partners vendors. Share Flipboard Email. Todd Johnson. Science Expert. Todd Johnson has worked on the development, commercialization, and sales sides of the composites industry since He also writes about the industry.
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