Porous materials for energy management
AssigneeNano and Advanced Materials Institute Limited
InventorsBin XIAO, Lik Kuen MA, Chao SUN, Sze Kui LAM
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Abstract
Method for preparing porous polyurethane materials with controlled pore size and shape using isocyanates, polyols, and additives, and the porous polyurethane materials prepared therefrom. Method for preparing porous polyimides using at least one polyamine and a dianhydride and the porous polyimides materials prepared therefrom. The porous materials are useful for energy management, such as thermal, impact and vibration energy, and can exhibit improved fire-resistant performance.
Claims23
A method for preparing a porous polyurethane material, the method comprising:
- providing a first composition comprising an isocyanate and a polyol mixture selected from the group consisting of at least one hydroxyl terminated polyether polyol and ethylene glycol;
- at least one hydroxyl terminated polyester polyol and ethylene glycol;
- and at least one hydroxyl terminated polyether polyol, ethylene glycol and hydroxyl terminated silicone oil;
- providing a second composition comprising at least one polyol, a blowing agent, optionally a pore forming agent, optionally a surfactant, and a catalyst;
- and
- combining the first composition and the second composition thereby forming the porous polyurethane material.
A method for preparing a porous polyimide material, the method comprising:
- combining at least one aryl polyamine and an aryl dianhydride in a reaction solvent thereby forming a mixture comprising a polyimide;
- exchanging at least a portion of the reaction solvent with a fluoroether or acetone;
- and removing the fluoroether or the acetone by supercritical drying thereby forming the porous polyimide material.
Dependencies are inferred from the claim text.