EVOH resin is a semi-crystalline thermoplastic resin with chemical structure and molecular structure. Its molecules contain hydroxyl molecules and intermolecular hydrogen bonds strongly bonded to each other, so that the chain movement required by oxygen diffusion is limited by intramolecular and intermolecular cohesion energy. The molecular chain flexibility is small, and the free intermolecular movement is less likely to temporarily form space, oxygen permeability is 0.1/m³, d, 40℃, The oxygen barrier is 10000 times higher than PE.

Structure and technical  parameters of oxygen - blocking floor heating pipe

EVOH crystallinity is high, heat resistance is good, in the long-term heating process performance will not be reduced. Oxygen blocking pipe through the international first-class multi-layer composite technology, with strict and fine control, to ensure that the wall thickness of each layer of the pipe is uniform, any part of the oxygen permeability is less than 0.1/m³, d, 40℃.