Which type of resin is included in the three types of polymer matrix resin?

Polyester resin is indeed one of the primary types of polymer matrix resins commonly used in composite materials. It is favored for its durability, good mechanical properties, and relatively low cost, making it a popular choice in boat building and other composite applications. Polyester resins can be further categorized into two types: orthophthalic and isophthalic, each offering various performance characteristics suited for different applications.

The use of polyester resin in composites typically involves a process called resin transfer molding or glass fiber reinforcement, which enhances the strength and stiffness of the resulting material. Its ability to cure quickly allows for efficient manufacturing processes, which is another reason behind its widespread adoption in various industries.

Other options, while critical in their respective applications and industries, do not fit within the main categories of polymer matrix resins. For instance, polyvinyl chloride is primarily used in plumbing and wiring due to its excellent chemical resistance; polyurethane is known for its flexibility and is often employed in foams and sealants; silicone is renowned for its heat resistance and flexibility but doesn’t act as a primary matrix resin in composite manufacturing. Thus, polyester stands out as the correct choice in this context.