▎ 摘　　要

NOVELTY - Preparation method of high-fluidity polyamide, involves: putting 1500-1600 pts. wt. caprolactam, 400-500 pts. wt. laurolactam, 50-60 pts. wt. distilled water and 25-35 pts. wt. intermediate (A) into the autoclave, closing the feeding port, vacuuming and replacing the air in the reactor with high-purity nitrogen, operating it for 3 times, and finally keeping the pressure in the reactor at -0.09 to -0.06 MPa; heating the reactor to 200-300 degrees C, and reacting for 180-240 minutes; opening the exhaust valve, vacuuming and reacting for 120-180 minutes, filling with high-purity nitrogen protection, after standing for 100-120 minutes to equilibrate, extracting the obtained material in boiling water, filtering, washing and drying to obtain a polyamide material; and using 2-chloro-4,6-diallyltriazine, 3-methacrylamidodopamine, and hydrogen silsesquioxane as raw materials for the hydrosilylation reaction to generate the intermediate (A). USE - Preparation method of high-fluidity polyamide. ADVANTAGE - The polyamide has high-fluidity. The method prepares sulfonated graphene grafted polyamide in a high temperature and high pressure environment, which has high compatibility with the matrix polyamide resin, which is beneficial to the improvement of the mechanical properties and fluidity of the polyamide material. The polyamide having high-performance, uses a multi-branched polyamide material as the main matrix resin, and the molecules of the polyamide material have a smaller atomic spatial arrangement size and a symmetrical structure. The polyamide has the characteristics of no entanglement inside and outside the molecule and small intermolecular interaction. The melt viscosity of the polyamide is much lower than that of the linear polyamide with the same molecular weight. The polyamide has excellent fluidity broadens the application range of polyamide materials, shortens the processing cycle, and reduces system costs.