insulating foam
1.Revising introduction of national standard GB13398-2003《Insulating hollow tubes and foam-filled tubes and solid rods for live working》
2.Method Performance test has been carried out for PIR foam insulating material modified from phenolic resin. Different insulating structures such as organic-inorganic insulating structure and compound silicate insulating coating have been premade. Tests also have been carried out for each buried and aerial insulating section according to GB 8174-87 standard by using DYJ120-2-J hot oil boi1er at temperatures of 180, 220, 250 C.
