First, the liquidity modification:
The blending of 1UHMWPE and LCP greatly improves the fluidity and can be processed by a single-screw extruder; the more the LCP is added, the better the fluidity of the mixture;
2UHMWPE is blended with PE, and the added amount of PE is less than 30% to ensure that the blend has good processability without reducing too much excellent performance;
Adding less than 10% of polyethylene wax, stearate and other additives to 3UHMWPE;
4~HMWPE is added with 3~5% layered nanosilicate, and the melt flow index can reach 0.2~0.4g/10min;
Adding 1% fumed silica to 5UHMWPE can be used as a nucleating agent for polyethylene to improve fluidity.
Second, wear resistance modification:
Adding the coupled molybdenum disulfide, graphite, ultrafine carbon black, ultrafine glass microbeads, carbon fiber, polytetrafluoroethylene, etc. can reduce the friction coefficient and improve the wear resistance; while adding rubber, polyurethane, etc., increase the friction coefficient .
Third, heat resistance modification:
After plasma cross-linking treatment, the use temperature of UHMWPE can be increased to 200 ° C; filling the coupled inorganic filler (such as glass beads, wollastonite, talc, mica, calcium carbonate, etc.) in UHMWPE can be obvious Increase the heat distortion temperature HDT.
Fourth, thermal conductivity modification:
Adding metal powder such as copper powder, aluminum powder and lead powder can improve the thermal conductivity of UHMWPE;
Fifth, mechanical modification.