Performance Analysis and Technical Advantages of TPS's EVOH in Underfloor Heating Applications

The implementation of TPS Company's Evoh Resin in underfloor heating systems represents a significant technological advancement in terms of performance metrics and technical specifications. This comprehensive analysis explores the material's characteristics and their direct impact on system efficiency and reliability.

The primary technical advantage of TPS's EVOH resin lies in its molecular structure, which features a high percentage of vinyl alcohol groups, typically ranging from 32% to 44%. This unique composition results in exceptional oxygen barrier properties, with oxygen transmission rates (OTR) as low as 0.01-0.1 cc/m²/day at 23°C and 0% relative humidity. These values represent a significant improvement over traditional materials, offering up to 100 times better oxygen barrier performance.

In underfloor heating applications, the mechanical properties of TPS's EVOH-enhanced pipes are particularly noteworthy. The material demonstrates excellent dimensional stability with a linear thermal expansion coefficient of approximately 0.15 mm/m/°C, ensuring minimal pipe movement during temperature fluctuations. The tensile strength of EVOH-enhanced pipes typically ranges from 20-25 MPa, providing robust mechanical performance under various installation and operating conditions.

The thermal conductivity of pipes manufactured with TPS's EVOH technology shows remarkable efficiency, with values ranging from 0.41 to 0.43 W/m·K. This optimal thermal conductivity ensures efficient heat transfer from the water to the floor surface, resulting in improved system performance and reduced energy consumption. The material's ability to maintain these properties over extended periods contributes to consistent heating performance throughout the system's lifetime.

Another crucial aspect is the chemical resistance of TPS's EVOH resin. The material shows exceptional stability against common chemicals found in heating systems, including glycol-based antifreeze solutions and water treatment additives. This chemical resistance ensures the longevity of the oxygen barrier properties and prevents degradation of the pipe structure over time.

The processing characteristics of TPS's EVOH resin have been optimized for pipe manufacturing, with a melt flow rate (MFR) typically ranging from 3.2 to 4.0 g/10min at 190°C. This specific MFR range ensures excellent processability during extrusion while maintaining the material's barrier properties. The processing temperature window of 190-230°C provides manufacturers with sufficient flexibility during production while ensuring consistent product quality.

The long-term pressure resistance of pipes manufactured with TPS's EVOH technology exceeds industry standards, with pipes capable of withstanding continuous pressure of up to 6 bar at 95°C for 50 years. This exceptional pressure resistance is crucial for ensuring system reliability and safety throughout the installation's lifetime.