• 专利标题:   Preparation of antifouling composite material used for preventing harmful microorganism from adhering to solid material, involves preparing silicone rubber-graphene composite material, coating with silane coupling agent solution, drying, soaking in polyvinylpyrrolidone solution, and drying.
  • 专利号:   CN115725105-A
  • 发明人:   FU H, WANG H, BING W
  • 专利权人:   UNIV CHANGCHUN TECHNOLOGY
  • 国际专利分类:   C08J007/056, C08J007/06, C08K003/04, C08L083/04
  • 专利详细信息:   CN115725105-A 03 Mar 2023 C08J-007/056 202323 Chinese
  • 申请详细信息:   CN115725105-A CN11511001 29 Nov 2022
  • 优先权号:   CN11511001

▎ 摘  要

NOVELTY - Preparation of polyvinylpyrrolidone-modified hydrophilic silicone rubber antifouling composite material involves stirring silicone rubber and 0.3-0.4 %mass graphene, pouring into a pre-prepared abrasive tool, curing for 24 hours to obtain silicone rubber-graphene composite material, cleaning the composite material with 75% (volume/volume) ethanol for 5 minutes and deionized water for 10 minutes in sequence, drying in an oven, mixing KH-792(RTM: N-2-(aminoethyl)-3-aminopropyltrimethoxysilane), anhydrous ethanol and water in a volume ratio of 1:1:4.25, hydrolyzing for 8 hours to obtain silane coupling agent solution, preparing 2 wt.% polyvinylpyrrolidone K30 solution with anhydrous ethanol, coating the surface of the dry silicone rubber-graphene composite material with a layer of the silane coupling agent solution, drying in the oven at 60℃, soaking the dried material in polyvinylpyrrolidone K30 solution, drying to room temperature, and placing in the oven at 30-40℃ for 2 days. USE - Preparation of polyvinylpyrrolidone-modified hydrophilic silicone rubber antifouling composite material (claimed) used for preventing harmful microorganism from adhering to surface of solid material. ADVANTAGE - The polyvinylpyrrolidone-modified hydrophilic silicone rubber antifouling composite material has excellent high-temperature resistance, corrosion resistance and antiaging property, low surface energy, contact angle of up to 20°±5.4°, and high antifouling ability to Paracoccus pantotrophus(Gram-negative bacteria), Bacillus subtilis(Gram-positive bacteria) and Chlorella, and modified durability, which can last for 1 month.