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公开(公告)号：US20240343913A1
公开(公告)日：2024-10-17
申请号：US18584988
申请日：2024-02-22
IPC分类号： C09D5/00 , B29B17/02 , B29C39/00 , B29C39/02 , B29C39/04 , B29C39/38 , B29K223/00 , C09D123/06 , C09D123/12
CPC分类号： C09D5/00 , B29B17/02 , B29C39/003 , B29C39/025 , B29C39/04 , B29C39/38 , C09D123/06 , C09D123/12 , B29B2017/0203 , B29K2223/0625 , B29K2223/0633 , B29K2223/065 , B29K2223/12 , B29K2909/08 , B29K2995/0093
摘要： Superhydrophobic films can be prepared from a stream of plastic waste (i.e., derived from post-consumer and/or industrial waste) by a method comprising: dissolving first semi-crystalline polymers in a solvent to form solution1; pre-heating a solid substrate to below a boiling point of the solvent; applying solution1 onto the substrate using spin-casting to obtain a porous blended-polymer layer with fragile structure; annealing the porous blended-polymer layer to above the melting point of the first semi-crystalline polymers to strengthen the porous blended-polymer layer's internal structure by closing pores and decreasing surface roughness, thereby obtaining a strong non-porous base support layer; and dissolving second semi-crystalline polymer in a solvent to form solution2; pre-heating the non-porous base layer to a temperature below a boiling point of the solvent; applying solution2 onto the non-porous base layer to obtain a top porous layer crosslinked with the non-porous base layer; and peeling off the freestanding superhydrophobic film.
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公开(公告)号：US20240343912A1
公开(公告)日：2024-10-17
申请号：US18584983
申请日：2024-02-22
IPC分类号： C09D5/00 , B29B17/02 , B29C39/00 , B29C39/02 , B29C39/04 , B29C39/38 , B29K223/00 , C09D123/06 , C09D123/12
CPC分类号： C09D5/00 , B29B17/02 , B29C39/003 , B29C39/025 , B29C39/04 , B29C39/38 , C09D123/06 , C09D123/12 , B29B2017/0203 , B29K2223/0625 , B29K2223/0633 , B29K2223/065 , B29K2223/12 , B29K2909/08 , B29K2995/0093
摘要： Superhydrophobic films from plastic waste and a fabrication method thereof are provided. Superhydrophobic films with variable thickness, comprising a base and top layer, can be created using semi-crystalline polymers, including virgin, recycled, or waste forms. The fabrication process utilizes 60% of total plastic waste, resulting in films with contact angles between 120° to 160°, tensile strength ranging from 1 MPa to about 70 MPa, and thickness ranging from 20 μm to about 5 mm. Superhydrophobic films may impart protective water-repellent properties against the elements.
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