Unsaturated Polyester Resin and Its Advantages and Disadvantages
What is Polyester resin?
This synthetic resin is a product of the reaction of dibasic organic acids with polyhydric alcohols. The raw material most commonly used to manufacture polyester resin is maleic anhydride, which has a diacid functionality.
Read on to learn more about this product. Listed below are some common uses for polyester resins. So what is this substance? Here are some of its advantages and disadvantages.
One of its most prominent features is its high-temperature resistance. It is very flexible and resistant to heat and moisture. It is also available in various compositions, depending on the specific application. When the polyester resin is cured, it becomes a solid that can withstand different temperatures. This process of cross-linking is called polymerization. The side-by-side cross-linking process makes polyester laminates brittle, so it is vital to use this resin for products intended to withstand water.
Polyester resin production is made possible through the reaction of ethylene glycol and succinic acid. The polymer molecules are composed of atoms, which form segments.
The two monomers are then combined to form one polymer. This process is known as copolymerization. This type of resin is highly versatile and has several applications in many different industries. It is the most common thermoset resin globally, with over two million tonnes being produced annually.
The unsaturated variety of polyester resin is also used in high-specific components for construction and aerospace.
When polyester resin is made, it is mixed with MEKP catalyst to produce a polymer with a range of properties from soft and ductile to hard and brittle. It is also very economical because it is readily available, has a low viscosity, and is easy to process at room temperature.
The downsides to this type of resin are its poor weathering resistance and high shrinkage. This can be solved by adding a thermoplastic component to the resin. Moreover, it can be formulated to cure at elevated temperatures.
The benefits of polyester resin are vast. This resin is excellent for casting and has the ability to simulate various types of natural materials, including wood, leather, and plastic.
Its high viscosity and color are just a few of the uses of polyester resin. This material is ideal for molding, and it is also good for making molds and is used in textile production. But it can also be harmful to human health. For instance, it can cause burns.
It is safe to use in many applications. In addition to being durable, polyester resin is also recyclable and compostable. The main advantage of this material is that it is easy to process.
It does not affect the taste of foods and has no additives or preservatives. It is safe to use for a variety of different purposes. It is used for boat building, bumpers, gutters, and other plastic parts. It is an excellent choice for repairs.
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