Thermosetting Plastic.pptx

Thermosetting Plastic.pptx

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  Thermosetting plastic Date : 05-12-2023 UTTAM SINGH BAGHEL B-TECH(ECE-Q) MANUFACTURING PROCESS
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  What is thermosetting plastic ? 2 Substancesthat cannot be reheated or remoulded when they heated or transformed once. They are difficult to recycle  Uses of thermosetting plastics a) Rubbers b) Balloons c) Insulated electric wires d) erasers
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  3 Properties of thermosetting plastics:  Durability: thermosetting plastics are highly resistant to heat, chemicals& impact of force.  Flame Resistance: Thermosetting plastics posses inherent flame resistance properties, which makes it suitable for fire- retardant applications.  Insulation: These plastics are excellent for electrical insulators, which makes it ideal for electronic appliances & electric systems.  Dimensional Stability: Due to the irreversible cross linking process, thermosetting plastics exhibit minimal shrinkage & deformation, ensuring dimensional stability.
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  Types of thermosetting plastics:  Epoxyresin: It is a versatile thermosetting plastic widely used in adhesives & composites.  Phenolic resin: They are renowned for their excellent heat resistance, low flammability which makes it a popular choice in automotive & construction industry.  Melamine formaldehyde: It offers a exceptional heat resistance makes it a suitable choice for electrical switches, countertops & laminates 4
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  5 HIGH STRENGTH Thermosetting plasticpossesimpressivestrength due to their network of cross linked molecular bonds. HEAT RESISTANCE Thermosetting plastic can withstand high temperature without melting or deforming,ensuring stability in various environment. CHEMICAL RESISTANCE Thermosetting plastic exhibit excellent resistance to corrosive chemicals, making them suitable for harsh environment DESIGN FLEXIBILITY These materials can be moided into complexshapes, providing designerswith greater freedom& flexibilityin their applications. Advantages Of Thermosetting Plastics:
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  6  IRREVERSIBLE  Oncecured, thermosetting plastics cannot be melted or reshaped, limiting their reusability and repairability.  BRITTLENESS  Some thermosetting plastics can be brittle, making them susceptible to cracking or breaking under certain impact forces.  SLOW CURING  The cross-linking process of thermosetting plastics often requires time and specific conditions, leading to longer production cycles. Disadvantage Of Thermosetting Plastics:
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