公开(公告)号：US20170120486A1

公开(公告)日：2017-05-04

申请号：US15121604

申请日：2015-05-20

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Stéphane Costeux ,  Daniel A. Beaudoin ,  Hyunwoo Kim ,  Devin A. Foether

IPC: B29C44/34 ,  C08J9/00 ,  C08J9/12 ,  B29C44/02 ,  B29C44/58

CPC classification number: B29C44/348 ,  B29C44/02 ,  B29C44/586 ,  B29K2105/041 ,  C08J9/0061 ,  C08J9/122 ,  C08J2203/06 ,  C08J2203/08 ,  C08J2205/042 ,  C08J2325/12 ,  C08J2333/06 ,  C08J2333/12 ,  C08J2425/12 ,  C08J2433/06

Abstract: Prepare nanofoam by: (a) providing a mold (10) with a mold cavity (12) defined by mold walls defining a sealable port (32); (b) providing a foamable polymer mixture containing a polymer and a blowing agent at a pressure at least 690 kilopascals above the saturation pressure for the polymer and blowing agent; (c) introducing the foamable polymer mixture into the mold cavity (12) while maintaining a temperature and pressure at least 690 kilopascals above the saturation pressure and controlling the pressure in the mold cavity (12) by expanding a wall of the mold; and (d) releasing pressure around the foamable mixture by moving a mold wall (20) at a rate of at least 45 centimeters per second, causing the foamable polymer mixture to expand into nanofoam having a porosity of at least 60 percent, a volume of at least 100 cubic centimeters and at least two orthogonal dimensions of four centimeter or more.

公开(公告)号：US10322534B2

公开(公告)日：2019-06-18

申请号：US15121604

申请日：2015-05-20

Applicant: Dow Global Technologies LLC

Inventor： Stéphane Costeux ,  Daniel A. Beaudoin ,  Hyunwoo Kim ,  Devin A. Foether

IPC: C08J9/00 ,  C08J9/12 ,  B29C44/02 ,  B29C44/34 ,  B29C44/58 ,  B29K105/04

Abstract: Prepare nanofoam by: (a) providing a mold (10) with a mold cavity (12) defined by mold walls defining a sealable port (32); (b) providing a foamable polymer mixture containing a polymer and a blowing agent at a pressure at least 690 kilopascals above the saturation pressure for the polymer and blowing agent; (c) introducing the foamable polymer mixture into the mold cavity (12) while maintaining a temperature and pressure at least 690 kilopascals above the saturation pressure and controlling the pressure in the mold cavity (12) by expanding a wall of the mold; and (d) releasing pressure around the foamable mixture by moving a mold wall (20) at a rate of at least 45 centimeters per second, causing the foamable polymer mixture to expand into nanofoam having a porosity of at least 60 percent, a volume of at least 100 cubic centimeters and at least two orthogonal dimensions of four centimeter or more.