• 专利标题:   Brake pad comprises friction layer, steel back, and adhesive layer, and is prepared by preparing adhesive layer made of e.g. modified graphene and silicon carbide, adding friction layer and steel back, hot pressing, leveling, and curing.
  • 专利号:   CN112877026-A
  • 发明人:   UNANNOUNCED I
  • 专利权人:   WENZHOU PANHU NEW ENERGY CO LTD
  • 国际专利分类:   C09J011/04, C09J011/06, C09J179/08, F16D069/02
  • 专利详细信息:   CN112877026-A 01 Jun 2021 C09J-179/08 202159 Pages: 11 Chinese
  • 申请详细信息:   CN112877026-A CN10232512 03 Mar 2021
  • 优先权号:   CN10232512

▎ 摘  要

NOVELTY - A brake pad comprises a friction layer, an adhesive layer, and a steel back. The adhesive layer includes 50-60 pts. wt. modified polyester imine resin, 10-15 pts. wt. modified graphene, 12-16 pts. wt. modified antioxidant, and 8-12 pts. wt. silicon carbide. The preparation process of the brake pad involves: (1) drying modified graphene and silicon carbide in a drying box at 80-100 degrees C for 2-3 hours, then mixing and grinding for 1 hour, sieving to obtain a solid mixture, adding to modified polyester imine resin and antioxidant, stirring, and mixing at 300-350 degrees C for 3-4 hours to obtain the adhesive layer; and (2) heating hot press at 280-300 degrees C, adding friction layer to the cavity of the hot press under 280-500 kgf/cm2, leveling, adding the adhesive layer to the cavity of the hot press, leveling, then adding the steel back on the adhesive layer, maintaining the pressure for 4-10 minutes to obtain semi-finished brake pad, curing, and cooling. USE - Brake pad. ADVANTAGE - The brake pad has excellent thermal stability, corrosion resistance, and oxidation resistance. DETAILED DESCRIPTION - A brake pad comprises a friction layer, an adhesive layer, and a steel back. The adhesive layer includes pts. wt. 50-60 modified polyester imine resin, 10-15 pts. wt. modified graphene, 12-16 pts. wt. modified antioxidant, and 8-12 pts. wt. silicon carbide. The preparation process of the brake pad involves: (1) drying modified graphene and silicon carbide in a mass ratio of (10-15):(8-12) in a drying box at 80-100 degrees C for 2-3 hours, then mixing and grinding for 1 hour, sieving to obtain a solid mixture, adding to modified polyester imine resin and antioxidant, stirring, and mixing at 300-350 degrees C for 3-4 hours to obtain the adhesive layer; and (2) heating hot press at 280-300 degrees C, adding friction layer to the cavity of the hot press under 280-500 kgf/cm2, leveling, adding the adhesive layer to the cavity of the hot press, leveling, then adding the steel back on the adhesive layer, maintaining the pressure for 4-10 minutes to obtain semi-finished brake pad, curing in a curing oven at 220-260 degrees C for 2-3 hours, and cooling to room temperature. The mass ratio of solid mixture, modified polyester imine resin and antioxidant is (18-27):(50-60):(12-16). An INDEPENDENT CLAIM is included for preparation of the brake pad.