• 专利标题:   High-tenacity plastic comprises polybutylene terephthalate, modified glass fiber, lubricant comprising ethylene bis stearamide, zinc stearate and sorbitol, and antioxidant comprising thiobisphenol, benzophenone and p-phenylenediamine.
  • 专利号:   CN113667285-A, CN113667285-B
  • 发明人:   CHEN Y
  • 专利权人:   SHANGHAI XINJIE BUSINESS SERVICE CO LTD
  • 国际专利分类:   C08K013/06, C08K003/04, C08K007/14, C08K007/26, C08K009/06, C08K009/10, C08L067/02
  • 专利详细信息:   CN113667285-A 19 Nov 2021 C08L-067/02 202224 Chinese
  • 申请详细信息:   CN113667285-A CN11143720 28 Sep 2021
  • 优先权号:   CN11143720

▎ 摘  要

NOVELTY - A high-tenacity plastic comprises 87.4- 91.4 pts. wt. polybutylene terephthalate (PBT), 0.3-0.5 pts. wt. lubricant, 0.3-0.5 pt. wt. antioxidant and 8-13 pts. wt. modified glass fiber. The modified glass fiber is prepared by preheating glass fiber, vacuum freeze-drying, mixing with hydrogen peroxide, heating to 110-120degrees Celsius, refluxing for 1-2 hours, adding silane coupling agent, heating to 90-100degrees Celsius, continuously reacting for 3-6 hours, drying to obtain premodified glass fiber, and heating and reacting pre-modified glass fiber and modified sol according to weight ratio of 1:2-5 under vacuum condition at 90-120degrees Celsius for 2-3 hours. The modified sol comprises mixed resin, modified filler and surfactant. The mixed resin comprises carboxyl-terminated hyperbranched polyester, N,N-dimethylformamide and epoxy resin. USE - High-tenacity plastic. ADVANTAGE - The plastic shell has high toughness and high torque. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing high-tenacity plastic comprising mixing modified glass fiber with PBT, lubricant and antioxidant to obtain mixed powder, adding mixed powder into mold, pressing, exhausting, pressure maintaining processing, heating and sintering to obtain sintering material, cooling to room temperature and taking out from mold.