PIPE Russian patent published in 2002 - IPC

FIELD: mechanical engineering. SUBSTANCE: glass plastic pipe has load-bearing glass plastic layer and inner lining layer made from thermosetting composite including polymer-oligomer system, plasticizer, initiating hardening agent, viscosity regulator, stabilizing agent, dye and filler. Function of filler of lining layer is performed by silicon carbide and that of polymer-oligomer system is performed by vinyl chloride copolymer with vinyla acetate. Lining layer contains the following components, mass-%: polyvinyl chloride, 040 to 0.10; vinyl chloride copolymer with vinyl acetate, 0.06 to 0.10; epoxy resin, 0.10 to 0.20; dicyanodiamide, 0.01 to 0.02; dioctyl phthalate, 0.10 to 0.20; silicon carbide, 0.10 to 0.20; calcium stearate, 0.005 to 0.015; aerosil, 0.003 to 0.015 and pigment, 0.001 to 0.003. EFFECT: enhanced wear resistance; improved physico-mechanical properties. 1 tbl