Hard PVC water pipe joints are damaged or sealed due to unreasonable glue selection or bonding process, environmental temperature changes, excessive pipe extrusion, etc., and water seepage and water leakage occur. The sealing effect by using cement mortar and hot melt adhesive is not ideal, and it is better to repair the method by wrapping the glass fiber cloth with epoxy resin with good water resistance and durability.
The alkali-free glass fiber cloth was treated in an oven at about 200 ° C for 1 hour for degreasing, and then cut into a desired width. Close the valve, stop the water supply, and the outer surface of the plastic pipe joint is roughened with an abrasive cloth, and then wiped clean with organic solvent. Glue according to the following formula (parts by mass):
E-5l epoxy resin 100
Dibutyl phthalate 10
810 underwater epoxy curing agent 33
KH-550 3
Use this epoxy glue to add light calcium carbonate to adjust the putty, scrape it on the steep part of the joint, make it smooth transition, and facilitate the entanglement of the glass fiber cloth. Apply 1 layer of epoxy glue around the treated pipe, wrap a layer of glass fiber cloth, wrap 3 layers, apply 1 layer of epoxy glue, and cure at room temperature / 24. h.
You can also use CD9626, 910 and other commercial epoxy glue plugging and reinforcement.
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