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Polymer Matrix Composites in Materials Science

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Polymer Matrix Composites in Materials Science

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Questions and Answers

What characteristic of polymer matrix composites (PMCs) makes them advantageous in applications?

High electrical conductivity

High flexibility

High stiffness and strength along the direction of reinforcements (correct)

High resistance to heat

Among the curing agents used in the advanced composite industry, which one is typically used with polyurethanes?

Polyaminoamides

Anhydrides (correct)

Isocyanates

Aliphatic amines

Which type of polymer matrix composite (PMC) allows for reheating and reforming into another shape?

Phenolic resins

Amino resins

Thermosets (correct)

Polyurethanes

Which compound is commonly used as a curing agent in the advanced composite industry?

Methylene-dianiline (MDA) (B) Signup and view all the answers

What is one of the main functions of curing agents in advanced composite systems?

Controlling the reaction rate of the resin (B) Signup and view all the answers

What is the primary role of the matrix in Polymer Matrix Composites (PMCs)?

To bond the fibers together and transfer loads between them (B) Signup and view all the answers

Which resin group in advanced composite processes is formed by reacting the polyol component with an isocyanate compound?

Polyurethanes (D) Signup and view all the answers

Which type of fibers are commonly used in Fiber-reinforced PMCs due to their cost efficiency?

Fiberglass fibers (D) Signup and view all the answers

What distinguishes thermoplastics from thermosets in the context of polymer matrix composites (PMCs)?

Thermoplastics can be reheated and reformed (A) Signup and view all the answers

What term is used to refer to epoxy resins due to their chemical structure?

Glycidyl compounds (C) Signup and view all the answers