Polyurethane systems
Polyurethane is an incredibly versatile material. It is available in a variety of different systems, with all these systems available in a range of material hardness’s. Some polyurethane systems are suited to ‘tough’ applications whereas others are better at being flexed and stretched repeatedly. Others are more suitable for being outside in the elements. All these Polyurethane systems are available in a range of hardness’s to suit your application but it’s important that the right Polyurethane system is selected.
This is important because it will determine the properties of the finished product and this choice of polyurethane system will vary depending on many factors. Different systems of polyurethane have different levels of hardness, strength, flexibility, resistance to chemicals, resistance to environmental factors, temperature, and wear and tear. Choosing the wrong grade can result in a product that is not durable or functional.
Watts Urethane Products Ltd have 6 polyurethane systems in continual production, including MDI, NDI, PPG’s, PTMEG’s, and Esters. We also have access to dozens more if the application requires a more specialist material. All these polyurethane systems are available in a range of colors and hardness’s.
Here are some of the factors to consider when choosing the right polyurethane system:
- The application: What are you using the polyurethane for? Different grades of polyurethane are designed for different applications, such as star wheels, tyres, squeegee blades, hammer pads or scraper blades.
- The environment: Where will the polyurethane be used? The grade of polyurethane will need to be chosen to withstand the environmental conditions, such as temperature, humidity, and exposure to chemicals.
- The budget: Polyurethane can range in price so the grade of polyurethane you choose will depend on your budget and the desired properties of the finished product.
Signs that you have the incorrect polyurethane system currently:
- Excessive wear and tear on the part.
- Melting or debonding.
- Shorter than expected lifespan.
- Poor performance of the product in the application.
When it comes to determining which polyurethane system would be best for your product, we can carry out extensive testing in our in-house laboratory to determine material properties. If the application requires, we can also test a specific product, under various environmental, and mechanical tests.
G6852 – Cured System mechanical properties
Above: table showing a range of tests and the results of Marine grade polyurethane
If you are unsure of which polyurethane system to use, it is always best to speak to an expert and at Watts Urethane we have over 45 years experience in this area. We will help you choose the right polyurethane system for your specific needs.
To find out more about the benefits of PU vs Rubber, please get in touch with Andy in our sales team.
PU parts v Metal Parts