80results about How to "Long antibacterial effect" patented technology

The invention discloses a processing technology of a high-performance antibacterial polypropylene spun-bonded non-woven fabric, and relates to the technical field of non-woven fabric processing. The technology comprises the following steps of (1) carboxylated polypropylene preparation, (2) antibacterial modification of polypropylene, (3) fiber web processing and (4) non-woven fabric molding. The prepared polypropylene spun-bonded non-woven fabric has a remarkable antibacterial property, the antibacterial property is stable, and the antibacterial aging is long; the prepared polypropylene spun-bonded non-woven fabric has high mechanical strength, good air permeability, is non-toxic and harmless to the human body, and is suitable for processing medical and health products such as surgical clothes and caps, bed sheets, urinal pads, insulating clothing, visiting clothes and the like.

The invention discloses a preparation method of a medical antibacterial bandage. The preparation method comprises spinning, weaving of a blank towel, preparation of an antibacterial liquid, preparation of an antibacterial soaking liquid, modification treatment, softening and drying. The modification treatment process comprises dipping a blank towel obtained by the step b into a washing machine, carrying out cleaning through water at 95-100 DEG C according to a bath ratio of 1: 20-27 for 25-36min, cooling the blank towel to 5-10 DEG C, washing the blank towel through water for 4-8min, adding anantibacterial soaking solution into the water, adjusting the temperature of the water solution to 65-75 DEG C, and carrying out soaking through the washing machine for 40-50min. The drying process comprises taking out a bandage and carrying out freeze drying to obtain gel on the surface of the bandage. The invention provides the preparation method of the medical antibacterial bandage. The medicalantibacterial bandage has the traditional sterilization and antibacterial functions and a cleaning function, has effects of improving blood circulation, promoting metabolism, eliminating fatigue andrefreshing brain, feels smooth, supple and comfortable, absorbs moisture and is breathable and comfortable.

The invention discloses a preparation method of antibacterial powders for an antibacterial coating. The preparation method comprises the following steps of: (1) weighing: weighing the prepared raw materials in parts by weight; (2) pouring a Na3PO4 gelatin solution into a reaction kettle, then, dropwise adding a silver nitrate solution, a copper nitrate solution and a zinc nitrate solution into the reaction kettle within 30min, adjusting the pH value to be between 6 and 7, then, adding triethyltin chloride and stirring to obtain a colloid; (3) deposition and filtration: depositing the obtained colloid for 2-3h, and then, filtering; (4), washing; (5) drying; and (6) calcining: calcining at the temperature of 70-90 DEG C for 2-3 hours to obtain Ag3PO4 powder, Ag3PO4-Zn3(PO4)2 powder, Ag3PO4-Cu3(PO4)2 powder and Ag3PO4-Cu3(PO4)2-Zn3(PO4)2 powder. The antibacterial powders provided by the invention can be favorably applied to the antibacterial coating, is environment friendly, free of pollution to human bodies and the environment, has high antibacterial rate of over 99.9% and is suitable for occasions such as a food factory, a pharmaceutical factory, a brewery, a hospital and the like with relatively high requirements on the environment.

The invention discloses an antibacterial sound insulation board, which is made from the following ingredients in parts by weight: 5-10 parts of nanometer titanium dioxide, 5-6 parts of nano silver particle, 40-80 parts of high damping silicone rubber, 40-50 parts of EPDM rubber, 15-30 parts of basalt fiber, 1-2 parts of benzoyl peroxide, 80-100 parts of EVA resin, 20-30 parts of white carbon black, 4-6 parts of hydroxyl silicone oil, 23-38 parts of foam ceramic powder, 2-4 parts of mica powder, 0.3-0.5 part of zinc oxide, 2-4 parts of stearic acid, 1.2-1.8 parts of accelerator, 2-3 parts of antioxidant, 5-9 parts of bamboo charcoal particles, 3-7 parts of zinc borate, 5-8 parts of high vinyl silicone oil and 0.2-0.4 part of silane coupling agent. The antibacterial sound insulation board prepared by the invention has the antibacterial rate over 99%, the sound absorption coefficient over 0.8, the compressive strength >= 8 MPa, the breaking strength>= 25 MPa, and excellent flame retardancy.

The invention discloses an antibacterial outer shell used for an automotive electronic igniter. The outer shell comprises the following raw materials in parts by weight: 125-135 parts of a main material, 1-2 parts of isopropyl tri(dioctylpyrophosphate) titanate, 0.5-1.2 parts of maleic anhydride, 1-5 parts of a composite antibacterial agent, 5-10 parts of precipitated barium sulfate, 2-6 parts ofheavy calcium carbonate, 1-6 parts of calcined kaolin, 2-4 parts of graphene, 1-2 parts of trimethylethoxysilane, 2-4 parts of a dispersant, 1-2 parts of an anti-aging agent, and 1-2 parts of a defoaming agent, wherein the composite antibacterial agent is prepared by the following processes: performing uniform mixing on houttuynin and toluene, adding a hydrogen peroxide aqueous solution dropwise,raising the temperature, performing stirring, performing extraction by adopting dichloromethane, collecting an organic phase, performing evaporation to dryness, adding nano zinc oxide, nano silver oxide, sepiolite powder and water, performing mixing, raising the temperature, performing stirring, raising the temperature, continuing stirring, performing cooling, performing filtering, performing washing, and performing drying to obtain the composite antibacterial agent.