The invention discloses a
processing method for a large-
caliber buried glass reinforced plastic sand inclusion
pipe, and belongs to the technical field of composite pipes. The
processing method includes the steps that modified steel fibers,
modified carbon fibers and modified glass fibers are woven into a
fiber mat, the
fiber mat is subjected to plastic soaking treatment, and a
fiber mat layer A is obtained; modified glass fibers and
modified carbon fibers are woven into a fiber mat, the fiber mat is subjected to plastic soaking treatment, and a fiber mat layer B is obtained; then the fiber mat layer A is processed into a lining layer on a sand inclusion
pipe mold, and the fiber mat layer B is processed into an inner
protection layer on the lining layer;
quartz sand, chopped glass fibers,
magnesium borate
whiskers and
unsaturated polyester resin are mixed into sand strips, the sand strips are processed into a sand inclusion layer on the inner
protection layer, then the fiber mat layer B is processed into an outer
protection layer on the sand inclusion layer, then
unsaturated polyester resin, and chopped glass fibers and
magnesium borate
whiskers are mixed on the outer protection layer to be processed into an outer
surface layer till the designed wall thickness is completed; finally, finishing, demolding, cleaning and testing are carried out after solidifying, and the finished product can be obtained.