Polyurethane/Red Mud Composites with Flexibility, Stretchability, and Flame Retardancy for Grouting.

ABSTRACT: Flexibility, stretchability, and flame retardancy are of ever increasing importance in constructing grouting materials. Herein, a simple and effective strategy to make organic-inorganic composite grouting material in a "flexible, stretchable, and flame retardant" way was based on the excellent synergistic interactions among polyurethane prepolymer, red mud, polyethylene glycol, and trimethylolpropane. The resultant polyurethane/red mud composite grouting material with three-dimensional network structure presented a favorable flexibility, desirable compressive strength of 29.2 MPa at 50% compression state, and a good elongation at 15.1%. The grouting material was mainly composed of amorphous polyurethane and crystalline red mud, and its probable formation mechanism was reaction of prepolyme

SUBMITTER: Zhang C 

PROVIDER: S-EPMC6403916 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature