Waterproof bitumen is a kind of special bitumen for producing waterproofing membranes. This product is powdery and flaky, it is a black shiny solid at room temperature, gradually melting when heated, soluble in organic solvents, in addition the product has good fluidity, Thermal stability, long-lasting adhesion, elasto-plasticity, electrical insulation and water resistance, which are mainly used in the production of modified bitumen membranes.
Waterproof asphalt production method and principle:
Water-proof asphalt is blowing air into vacuum residue or deoiled asphalt under a certain range of high temperature to change the composition and properties of the product. The resulting product is called oxidized asphalt. Vacuum residue will produce vaporization evaporation under the effect of high temperature and blowing air, at the same time, a series of reactions such as dehydrogenation, oxidation and polymerization condensation will occur. This is a very complex comprehensive reaction process in which multiple components interact with each other, not just oxidation, but it is customarily called oxidation and oxidized asphalt, also known as air blowing and air-blown asphalt.