• 专利标题:   Graphene oxide/thermoplastic polyurethane elastomer composite powder for selective laser sintering of heat-resistant parts comprises thermoplastic polyurethane elastomer powder, graphene oxide, flow aid, antioxidant and coupling agent.
  • 专利号:   CN111995861-A
  • 发明人:   WU W, HU H, LI J, LIU D, HUANG J
  • 专利权人:   OECHSLER PLASTIC PROD TAICANG CO LTD, UNIV EAST CHINA SCI TECHNOLOGY
  • 国际专利分类:   B29C067/04, B33Y010/00, B33Y070/10, C08K013/02, C08K013/04, C08K003/04, C08K003/22, C08K003/34, C08K003/36, C08K007/26, C08L075/06, C08L075/08
  • 专利详细信息:   CN111995861-A 27 Nov 2020 C08L-075/06 202004 Pages: 9 Chinese
  • 申请详细信息:   CN111995861-A CN10875512 27 Aug 2020
  • 优先权号:   CN10875512

▎ 摘  要

NOVELTY - Graphene oxide/thermoplastic polyurethane elastomer composite powder comprises 100 pts. wt. thermoplastic polyurethane elastomer powder for selective laser sintering, 5-10 pts. wt. graphene oxide, 0.3-0.4 pt. wt. flow aid, 0.3-1 pt. wt. antioxidant, and 0.025-0.2 pt. wt. coupling agent. USE - The graphene oxide/thermoplastic polyurethane elastomer composite powder is used for selective laser sintering of heat-resistant part (claimed), preferably automobile intake manifolds and exhaust manifolds. ADVANTAGE - The graphene oxide/thermoplastic polyurethane elastomer composite powder has excellent mechanical properties, has high heat resistance and wear resistance, improves the heat resistance and increases the service life. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the graphene oxide/thermoplastic polyurethane elastomer composite powder for selective laser sintering of heat-resistant parts, comprising (a) putting the flow aid, antioxidant, coupling agent, graphene oxide powder and 20-30% thermoplastic polyurethane elastomer powder into the high-speed mixer and mixing for 10-50 minute to obtain the powder, and (c) putting the above-mentioned primer and the remaining thermoplastic polyurethane elastomer powder into a high-speed mixer and mixing for 10-30 minutes.