Is Thermoset Molding Right for You?

Thermoset Parts Traditional plastic or metal surfaces can't always stand up to the abuse of many applications. If you need a more chemically robust material with flame retardants, it's time to consider thermosets.

Thermosets are a special family of polymers that inherently produce higher, more chemically resistant surface hardness than thermoplastics.

Whereas traditional thermoplastics are viscous liquids susceptible to creep and deformation, thermosets are formed by molecular chains of polymer that crosslink during the curing process to produce a solid with unmatched strength.

Thermosets certainly aren’t the right fit for all products, but they can provide distinct benefits for the right applications—especially in terms of durability.

Thermosets also offer many other advantages.

High strength-to-weight ratio: Thermoset components are up to 35 percent lighter than steel parts of equal strength.
Corrosion resistance: Thermosets withstand exposure to corrosive cleaning substances.
Dielectric properties: Unlike conductive metals, thermosets provide electrical insulation.
Molded-in color: Adding color in the molding process eliminates the need to paint a component, and its color can’t be scratched, worn or melted off.
Aesthetic advantages: A variety of textures, customizable colors and glosses are available, and high-gloss finishes are easily achieved.

Processing

There are several methods of processing thermosets; two of the most common are compression molding and injection molding. DMP also offers compression injection molding.

Whichever method is selected, it’s important to partner with a molder who is well versed in the intricacies of the process. Teamwork is crucial for successful design and production. Part designers and molder must work closely with material suppliers to determine the best polymer for a given application.

Scientific Molding

Another good way to assure the highest quality thermoset parts is to apply the techniques of the Scientific Molding process. Currently employed by only about 5% of molders in the U.S., Scientific Molding is a disciplined, systematic approach to part processing that focuses on material and measurements. Using this method enables more predictable, controlled processing to reduce defects and maximize repeatable part quality.

Clearly, thermosets can offer distinct advantages many other materials can’t. For more information, please contact us today.

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