• 专利标题:   Flexible, low shrinkage, conductive formulation for coating substrate of articles and filling gaps in electronic packages comprises sinterable, conductive metal particles, graphene, diluent, and polymer resin.
  • 专利号:   WO2018053092-A1, TW201819499-A, CN109475941-A, KR2019055788-A, US2019206805-A1, EP3512654-A1
  • 发明人:   HONG X, SANCHEZ J G, CAO X, ZHUO Q
  • 专利权人:   HENKEL IP HOLDING GMBH, HONG X, HENKEL IP HOLDING GMBH, HENKEL IP HOLDING GMBH
  • 国际专利分类:   B22F007/00, B29C070/58, B29C070/60, C01B032/00, C01B032/182, C08J003/20, C09D201/00, G21F001/08, G21F001/10, H01B001/22, H01B001/24, H01Q017/00, H05K009/00, C08K003/04, C08K003/08, C08K005/00, C08L101/00, C09K003/00, H01L021/56, H01L023/29, H01L023/552, B22F001/00, C22C026/00, H01B001/02, H01B001/04, H01B001/20, C08G073/06
  • 专利详细信息:   WO2018053092-A1 22 Mar 2018 B22F-007/00 201825 Pages: 37 English
  • 申请详细信息:   WO2018053092-A1 WOUS051508 14 Sep 2017
  • 优先权号:   US395037P, CN80046645, US296841

▎ 摘  要

NOVELTY - A flexible, low shrinkage, conductive formulation comprises 75-95 wt.% sinterable, conductive metal particles, 0.2-5 wt.% graphene, 1-20 wt.% diluent, and 0-20 wt.% polymer resin, in which sinterable, conductive metal particles are optionally surface treated and have particle size of 1 nm to 50 mu m; graphene particles are optionally surface treated and have particle size of 1 nm to 50 mu m; diluent is low viscosity, reactive or non-reactive material; polymer resin is thermoset or thermoplastic; and formulation is sinterable at not greater than 250 degrees C. USE - A flexible, low shrinkage, conductive formulation for coating substrate of articles and filling gaps in electronic packages (all claimed). ADVANTAGE - Addition of graphene to formulation containing sinterable metal particles reduces curing shrinkage and brittleness and improves flexibility, without significantly affecting the EMI shielding performance of formulation. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) article comprising sintered aliquot of conductive formulation applied to suitable substrate; (2) method to achieve electromagnetic interference (EMI) shielding of electronic package which involves applying conductive formulation to package and subjecting package to conditions suitable to sinter formulation; (3) shielded article comprising electronic package in which greater than or equal to 1 gaps are filled with sintered formulation; (4) reduction of shrinkage of formulation comprising sinterable metal particles upon sintering formulation which involves introducing 0.2-5 wt.% graphene into formulation prior to sintering; and (5) reduction of brittleness of formulation comprising sinterable metal particles upon sintering formulation which involves introducing 0.2-5 wt.% graphene into formulation prior to sintering.