• 专利标题:   Surface-metalized polymer article comprises polymer component, first layer composed of multiple graphene sheets and conducive filler coated on polymer component surface, and second layer of plated metal deposited on first layer.
  • 专利号:   US2019283377-A1, WO2019182652-A1, TW201938841-A
  • 发明人:   LIN Y, LEE S, JHONG Y, ZHAMU A, JANG B Z, LI S
  • 专利权人:   NANOTEK INSTR INC
  • 国际专利分类:   B32B015/08, B32B015/14, B32B027/12, B32B009/00, C08J007/04, C08K003/04, C08K003/08, H01L021/02, H01L021/283, C09D001/00, C09D007/40, C23C018/20, C23C018/31, C25D005/56
  • 专利详细信息:   US2019283377-A1 19 Sep 2019 B32B-027/12 201975 Pages: 24 English
  • 申请详细信息:   US2019283377-A1 US924957 19 Mar 2018
  • 优先权号:   US924957, US924971

▎ 摘  要

NOVELTY - A surface-metalized polymer article comprises polymer component having surface, 1st layer composed of multiple graphene sheets and conducive filler coated on polymer component surface, and 2nd layer of plated metal deposited on 1st layer, where multiple graphene sheets contain single-layer or multi-layer graphene sheets selected from pristine graphene material having essentially 0 wt.% non-carbon elements, or non-pristine graphene material having 0.001-25 wt.% non-carbon elements. Non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, and/or chemically functionalized graphene, and multiple graphene sheets and conductive filler are bonded to polymer component surface with adhesive resin, and 1st layer has thickness of 0.34 nm to 30 mu m. USE - A surface-metalized polymer article. ADVANTAGE - Even without using chromic acid or chromosulfuric acid, strong adhesion between deposited metal layers and lightly etched polymer surfaces can be achieved via functionalized graphene sheet mediation and/or functionalized carbon nanotube (CNT) mediation. These well-bonded metal layers show a high temperature cycling resistance and survive all the customary temperature cycling shocks. A wide variety of chemical functional groups can be attached to the edges or surfaces of mediating graphene sheets or CNTs that enable rapid metallization of polymer components. The process can be conducted under very mild conditions requiring only a short period of time. Optimal results are also achievable without the repetition of the process steps commonly required of prior art processes. High-quality metal layers can be deposited on polymer component surfaces without heavy capital investment and large material consumption. Furthermore, the process can be controlled in a functionally secure and simple manner which ultimately affects the quality of the metal layers. A surprisingly wide variety of polymers, including not just plastics but also rubbers and composite materials, can be effectively metallized. In contrast, only a limited number of plastics can be satisfactorily metallized with prior art processes. Since etching of the plastic surface at high temperatures is not necessary, energy savings can be achieved. Since only mild etching conditions are required where necessary in rare cases (e.g. highly sooth ultrahigh molecular weight polyethylene surfaces), a broader array of benign etching solutions can be used; obviating the need to use environmentally restricted chemicals. The method can involve only two steps, as opposed to the prior art process which requires multiple steps: pretreatment, chemical etching, activation, chemical metallization, and electrolytic deposition of multiple metal layers. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) production of surface-metalized polymer article which involves (a) providing graphene-conductive filler mixture dispersion comprising multiple graphene sheets and conductive filler dispersed in liquid medium and adhesive resin having adhesive to graphene ratio of 1/5000-1/10, bringing surface of polymer component into contact with dispersion, and facilitating deposition of multiple graphene sheets and conductive filler onto surface of polymer component, where multiple graphene sheets and conductive filler are bonded by adhesive to surface to form a layer of bonded graphene sheets and conductive filler that covers polymer component surface, and (b) chemically, physically, electrochemically, or electrolytically depositing a layer of a metal onto covered polymer component surface to form surface-metalized polymer article; and (2) graphene-conductive filler dispersion for use in metallization of a polymer surface comprising multiple graphene sheets and conductive filler dispersed in a liquid medium, and (i) adhesive resin dissolved or dispersed in liquid medium, (ii) etchant selected from acid, oxidizer, and/or metal salt, and/or (iii) nanoscaled particles or coating of a catalytic metal, having a diameter or thickness of 0.5-100 nm, selected from cobalt, nickel, copper, iron, manganese, tin, zinc, lead, bismuth, silver, gold, palladium, platinum, and/or their alloy.