▎ 摘　　要

NOVELTY - A high tenacity medical non-woven fabric comprises modified aramid fiber, PTFE fiber, carbon fiber, light calcium carbonate, antibacterial liquid, and antioxidant. A method for preparing a high-toughness medical non-woven fabric, involves (1) taking polyester polyol, adding isocyanate, diethylaminoethanol to obtain substance (A), melting substance (A), adding aramid fiber and diethylaminoethanol, mixing to obtain substance (B), dissolving graphene oxide in phosphoric acid solution, adding hydrogen peroxide solution, washing with absolute ethanol to obtain substance (C), adding ammonia and substance (B) to obtain modified aramid fiber, (2) mixing modified aramid fiber, PTFE fiber, light calcium carbonate, and antioxidant, outputting through spinning hole, covering the carbon fibers on the surface of the fiber mesh core layer to form a composite fiber mesh, and drying to obtain a medical non-woven fabric, laying the carbon fiber in a horizontal and vertical alternating grid. USE - High tenacity medical non-woven fabric. ADVANTAGE - The medical nonwoven fabric has high toughness, high strength and good antibacterial effect. DETAILED DESCRIPTION - A high tenacity medical non-woven fabric comprises 57 pts. wt. modified aramid fiber, 29 pts. wt. PTFE fiber, 25 pts. wt. carbon fiber, 17 pts. wt. light calcium carbonate, 9 pts. wt. antibacterial liquid, and 3 pts. wt. antioxidant. A method for preparing a high-toughness medical non-woven fabric, involves (1) taking polyester polyol, raising the temperature to 110 degrees C, and dehydrating in vacuum for 30 minutes, cooling down to 60 degrees C, adding isocyanate, 1/2 mass of diethylaminoethanol, raising the temperature to 90 degrees C, reacting for 3 hours to obtain substance (A), melting substance (A), adding aramid fiber and the remaining 1/2 mass of diethylaminoethanol, mixing well, and reacting for 30 minutes at a temperature of 90 degrees C to obtain substance (B), dissolving graphene oxide in phosphoric acid solution, adding 35% hydrogen peroxide solution, stirring, reacting, filtering, and washing with absolute ethanol to obtain substance (C), dissolving substance (C) in acetone solution, adding ammonia and substance (B), stirring evenly, adding sodium hydroxide solution dropwise, reacting for 60 minutes at a temperature of 62 degrees C, filtering, and washing to obtain modified aramid fiber, (2) mixing modified aramid fiber, PTFE fiber, light calcium carbonate, and antioxidant, melting at 200 degrees C, outputting through spinning hole, and drawing to form composite fiber, laying the composite fibers into a fiber mesh core layer, covering the carbon fibers on the surface of the fiber mesh core layer to form a composite fiber mesh, reinforcing the composite fiber web by 7 spunlace to obtain spunlace non-woven fabric, soaking the spunlace non-woven fabric in the antibacterial liquid at a bath ratio of 1:10, soaking for 6 hours, and drying to obtain a high-toughness medical non-woven fabric, laying the carbon fiber in a horizontal and vertical alternating grid, and maintaining the mass of the carbon fiber of 10% of the mass of the composite fiber. In the spunlace process, the pressure of the spunlace (I) is 4 MPa, the pressure of the spunlace (II) is 8 MPa, the pressure of the spunlace (III) is 10 MPa, the pressure of the spunlace (IV) is 9 MPa, and the pressure of the spunlace (V) is MPa, The pressure of the spunlace (VI) is 7 MPa, and the pressure of the spunlace (VII) is 7 MPa.