Method and Apparatus for Lining Pipes with Isocyanate and Hydroxyl-Amine Resin Based on Castrol or Soy Oil

摘要

A method is disclosed for installing in a conduit a monolithic liner comprised of an amine terminated resin and a hydroxyl resin combined with isocyanate. The hydroxyl resin may include caster oil or soy based oil. The liner mixture may include anti-static agents such as quaternary ammonium ethosulfates, ethoxylated amines or glycerol esters. The coating does not utilize a catalyst. The lining forms a structural pipe component. The lining has a Shore D hardness of 60 and 65 with an NCO index of 1.10 and 1.25. The apparatus includes a main component body including an umbilical comprising hoses for lining and air components and electrical power signal, an impingement block for mixing the liner and controlled by a termination rod. The device may reciprocate forward and reverse in the pipe. The method and apparatus can structurally reinforce the pipe to allow operation at the pipe's original maximum allowable operating pressure.