• 专利标题:   Preparation of flame retardant foam by heating and dehydrating part of polyether polyol, adding remaining polyether polyol, polyester polyol and additives to reaction kettle, mixing dehydrated polyether polyol, mixed solution and isocyanate for reacting, adding graphene, foam coating and drying.
  • 专利号:   CN116144285-A
  • 发明人:   FU J, WANG E, SU Y, WANG J, ZHANG Z
  • 专利权人:   QINGDAO JOINSET S T CO LTD
  • 国际专利分类:   C09J011/04, C09J175/06, C09J175/08, C09J007/26, C09J007/30
  • 专利详细信息:   CN116144285-A 23 May 2023 C09J-007/30 202352 Chinese
  • 申请详细信息:   CN116144285-A CN10066820 16 Jan 2023
  • 优先权号:   CN10066820

▎ 摘  要

NOVELTY - Preparation method of flame retardant foam comprises (S1) dividing polyether polyol into two parts, heating and dehydrating one part under vacuum condition to obtain dehydrated polyether polyol, (S2) adding the remaining polyether polyol, polyester polyol, additives and water to a reaction kettle and stirring until uniformly mixed to obtain a mixed solution, (S3) mixing the dehydrated polyether polyol, the mixed solution and isocyanate, reacting under a protective atmosphere and after finishing reacting, adding graphene to obtain a mixture and (S4) foam coating and drying the mixture on a base film to obtain the flame retardant foam. USE - The method is used for preparing flame retardant foam (claimed). ADVANTAGE - The preparation method is simple and easy to operate. The flame retardant foam has balanced flame retardant properties, foaming uniformity, and mechanical properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the flame retardant foam prepared by the above method.