Heat resistant materials are important for components that need to withstand high temperatures, whether the heat is generated artificially – as is the case with materials exposed to continuous friction or abrasion – or naturally due to climatic or environmental extremes. While both metals and ceramics have heat resistant qualities, metals corrode easily and ceramics are extraordinarily brittle. Heat resistant plastics have unique properties that allow them to outperform metals and ceramics. Along with resistance to high temperatures, heat resistant polymers will neither corrode like metals nor break like ceramics, and tend to be more durable than other materials.
Advantages of Heat Resistant Plastics
Heat resistant plastics, like those belonging to the family of thermosetting plastics, tend to perform well in both extreme temperatures and when exposed to chemicals. In contrast, thermoplastics melt easily at high temperatures. Though easily recycled, thermoplastics cannot be used for components that experience high temperatures.
Many heat resistant polymers are made using the reaction injection molding (RIM) and resin transfer molding (RTM). Both RTM and RIM plastics can be reinforced with fibers such as aramid, carbon, glass or graphite. These fibers allow them to withstand deformation due to high temperatures, abrasion, weather, and even natural deterioration.
Heat resistant and semi-heat resistant plastics, including both thermo and thermosetting materials, include:
Amorphous plastics include most clear plastics, including polycarbonate, polysulfone, PETG, ABS and acrylic. They are easy to mold and bond well with adhesives. These plastics also hold their shape better when exposed to heat and resist impact, though they are more prone to stress fractures and tend to break more easily than semi-crystalline polymers.
Semi-crystalline plastics are typically used for plastic components, and include polypropylene, fluoropolymers, nylon, acetal and polyethylenes (LDPE, HDPE, UHMW-PE). These heat resistant polymers work great for structural and bearing applications, and tend also to resist friction and chemicals. However, semi-crystalline polymers don’t bond or mold easily, and have only average resistance to impact and a very narrow temperature melting point.
Themosetting plastics, like those molded at Osborne, are often used across a variety of industries for things like large machine body parts and covers, vehicle fenders and bumpers, and others subject to extreme conditions in the field. These materials include polyester, vinyl ester, DCPD (dicyclopentadiene), polyurethane, and more.
Often, heat resistant plastics are used in place of metals for components because they are lighter weight and more resistant to chemicals, abrasion, and impact.
Contact Osborne Industries
Are you needing a heat resistant plastic component for your equipment or project? Osborne offers more than 45 years of custom molding experience, specializing in heat resistant DCPD, RIM and RTM molding. Our expert team will create a design and final product that fits your specifications. To learn more about our project capabilities, please contact us today!
Composite materials are made by combining two or more substances with differing physical properties. The best composites are made from materials that complement each other, combining the strengths of the individual ingredients to create a new material that has the best characteristics of each. Plastic composites are no different, and contain fillers, powders, particles, fibers and other reinforcing materials to improve rigidity, strength or other aspects to suit a variety of purposes. Read more >
Plastics encompass a wide array of materials and molding processes used to create finished parts. Typical injection molding involves heating thermoplastic or thermosetting plastic polymers and injecting them into a mold where it conforms to the mold cavity, cools and hardens. Other molding processes, like Resin Transfer Molding (RTM), involve injecting or spraying liquid thermosetting materials into a mold with reinforcing fibers, like fiberglass. Typical plastic molding can be done two ways: either by closed molding or open molding. In simple terms, plastic resin exposed to the atmosphere during curing is known as open molding, while that which is not exposed to air during curing is known as closed molding. Each type of molding has its place within the plastics industry, with advantages and disadvantages for each. Read more >
Custom plastic parts require production methods and tools that can deliver with precision. If one measurement, trim pattern, or hole is off even slightly throughout that process, it can result in scrapped parts that don’t match customer specifications. Fortunately for Osborne’s growing group of leading original equipment manufacturers (OEMs), automated CNC machining services are available to ensure accuracy with every round of production. Read more >
It’s no secret that both thermosetting plastics and thermoplastics play a significant role in the world today, but with so many different material properties, it can be difficult to determine which one is appropriate for a specific application. How do you determine which material is best?
Two popular plastics with somewhat similar material properties are UHMWPE and pDCPD, both of which offer unique benefits to fabrication and the applications in which they are used. Below, we compare and contrast these two key players to help you decipher which will work best for your application. Read more >
For plastic molding projects, the quality and performance of a finished product start with its design. Several molding processes, like Resin Transfer Molding (RTM) and Reaction Injection Molding (RIM), are ideal for accommodating molded-in components that can improve both part quality and performance. Incorporating these composite materials can improve structural integrity or reduce secondary operations. When designed properly, complex plastic molded parts incorporating these components can result in lower production costs and higher strength. Read more >
Polydicyclopentadiene (pDCPD) is a highly engineered thermoset polymer with exceptional physical properties including chemical and corrosion resistance, impact strength, stiffness, and heat resistance. Perfect for rough and demanding environments, pDCPD is used in thousands of applications where large, strong, and aesthetically-pleasing parts are required.
The design freedom of pDCPD has virtually no limitation on part size or weight. It delivers the molding flexibility of a thermoset, but with characteristics similar to expensive engineered thermoplastics. Read more >
Reaction Injection Molded (RIM) components feature a combination of unique physical properties not found in thermoplastics or metal. Incredible impact and corrosion resistance makes RIM-molded thermosetting resins like polyurethane and polydicyclopentadiene (pDCPD) an excellent choice for original equipment manufacturer’s (OEMs) whose equipment must withstand harsh conditions. RIM plastics excel in high temperature, highly corrosive, and extremely abrasive environments.
The novel Coronavirus, better known as COVID-19, has become a household word. Although we do not fully understand its future within our company nor the economy, we do understand and support those that are battling the virus on the front lines. Osborne is working to keep its business safe and steady to support any and all business as the many economies continue to re-open around the world. Read more >
One of the advantages of custom plastic molding is the ability to easily accommodate molded-in components. From brackets or threaded inserts to attach molded plastic parts to finished equipment or cores to add structural integrity to a part, the RTM (Resin Transfer Molding) and RIM (Reaction Injection Molding) processes are well suited for molded-in components. Read more >