Polymer foam and method for preparing the same
AssigneesLcy Chemical Corp., Ohio State Innovation Foundation
InventorsLy James Lee, Dachao Li, Ying-Chieh Yen, Dajiong Fu, Yuen-Yuen D Chiu, Chiang-Hsiang Lin
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Abstract
Polymer foam and a method for preparing the same are disclosed. In the present disclosure, the method sequentially comprises the following steps: providing a polymer body; performing a pressure-induced flow (PIF) process on the polymer body at a first predetermined temperature and a first predetermined pressure for a pressure holding time, to obtain a polymer sheet; and performing a foaming process on the polymer sheet by using a foaming agent at a second predetermined temperature and a second predetermined pressure for a saturation time, to obtain polymer foam.
Claims20
A method for preparing polymer foam, comprising the following steps:
- providing a polymer body of an unmodified polymer or a polymer composite with the unmodified polymer, wherein the unmodified polymer is polypropylene;
- performing a pressure-induced flow (PIF) process on the polymer body at a first predetermined temperature and a first predetermined pressure for a pressure holding time, to obtain a polymer sheet;
- and
- performing a foaming process on the polymer sheet by using a foaming agent at a second predetermined temperature and a second predetermined pressure for a saturation time, to obtain polymer foam,
- wherein the second predetermined temperature is in a range from 150° C. to 160° C. and the second predetermined pressure is in a range from 15.5 MPa to 20 MPa.
Dependencies are inferred from the claim text.