The floor heating material is a medium-density polyethylene with very stable mechanical properties, which is formed by the copolymerization of ethylene and octene monomers through metallocene catalysis. Its unique ethylene main chain and octene short-branched structure make it have the excellent toughness of ethylene, stress crack resistance, low temperature impact resistance, outstanding long-term water pressure resistance and octene heat creep resistance.
1. Flexibility: PE-RT is relatively soft. No special tools are required during construction, so the processing cost is relatively low. 2. Thermal conductivity: pipes used for floor heating need to have good thermal conductivity. PE-RT has better thermal conductivity, and its thermal conductivity is twice that of PP-R and PP-B pipes. It is very suitable for floor heating.
3. Low temperature thermal shock resistance: PE-RT has better low temperature shock resistance. During winter construction, the pipes are not susceptible to being impacted and broken, which increases the flexibility of construction arrangements.
4. Environmental protection: PE-RT and PP-R can be recycled and will not pollute the environment. The PEX cannot be recycled will cause secondary pollution;
5. Stability of processing performance: PEX has the problems of controlling the degree of cross-linking and cross-linking uniformity. The processing is complicated and the processing directly affects the performance of the pipe. However, PE-RT and PP-R are easy to process, and the performance of the pipe is basically determined by the raw material, and the performance is relatively stable.
PE-RT can be connected by hot-melt connection, accidentally damaged can also be repaired by hot-melt connection of pipe fittings. The floor heating material has a creep failure curve that meets the product standard. It is the only type of polyethylene that can be used for hot water pipes without cross-linking at this stage.
