Method for preparing flexible pull rope by using polyurethane resin system

• Main Authors: CHEN YONGWU, QI GAOYUAN, HUANG ZHINING
• Format: Patent
• Language: Chinese; English
• Published: 04.08.2023
• Subjects: ADHESIVES; CABLES OTHER THAN ELECTRIC; CHEMICAL PAINT OR INK REMOVERS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CORRECTING FLUIDS; DIFFUSION TREATMENT OF METALLIC MATERIAL; DYES; FILLING PASTES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; ROPES; ROPES OR CABLES IN GENERAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TEXTILES; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention discloses a method for preparing a flexible pull rope by using a polyurethane resin system. The preparation method of the flexible pull rope comprises the following steps: step 1, pickling; step 2, phosphating; 3, cold wire drawing; step 4, twisting; step 5, manufacturing a flexible pull rope, mixing a polyurethane resin system into a mixing kettle, soaking the twisted flexible pull rope in the mixing kettle, heating the mixing kettle, controlling the temperature to be 100-160 DEG C, keeping the temperature for 2-3 hours, and cooling to room temperature; and then cooling to 60-90 DEG C, heating to 140-180 DEG C, cooling, and taking out the flexible pull rope from the mixing kettle to obtain the flexible pull rope. The method for preparing the flexible pull rope by using the polyurethane resin system can improve the bonding force of the flexible pull rope material, has excellent high-temperature resistance and electrical insulation capability, is simple to operate, and is suitable for large-scale