公开(公告)号：US20180186060A1

公开(公告)日：2018-07-05

申请号：US15893678

申请日：2018-02-11

Applicant: University of Electronic Science and Technology of China

Inventor： Weizhi Li ,  Jimeng Li ,  Yuming Wu ,  Xiaosong Du ,  Huiling Tai ,  He Yu

IPC: B29C55/04 ,  C08J5/18 ,  B29C41/00 ,  B29C41/02 ,  B29C41/46 ,  B29C55/00

CPC classification number: B29C55/04 ,  B29C41/003 ,  B29C41/02 ,  B29C41/46 ,  B29C55/005 ,  B29K2027/16 ,  B29K2105/0073 ,  B29K2995/0003 ,  B29L2007/008 ,  C08J5/18 ,  C08J2327/16 ,  C08J2327/20

Abstract: A method for preparing a pyroelectric polymer film based on a combined process of solution casting and uniaxial stretching is disclosed. The pyroelectric polymer film is firstly prepared by solution casting, afterwards, the casted film is subjected to uniaxial stretching when the film is in a semi-cured state (wet film). Thus a larger stretching ratio (>10) at a lower temperature (even at room temperature) is realized. Without undergoing a further poling process, the as-stretched film does have a fairly good pyroelectric performance. Moreover, the surface of the stretched film is smoother and having less surface defects.

公开(公告)号：US10730226B2

公开(公告)日：2020-08-04

申请号：US15893678

申请日：2018-02-11

Applicant: University of Electronic Science and Technology of China

Inventor： Weizhi Li ,  Jimeng Li ,  Yuming Wu ,  Xiaosong Du ,  Huiling Tai ,  He Yu

IPC: B29C55/04 ,  C08J5/18 ,  B29C41/00 ,  B29C41/02 ,  B29C41/46 ,  B29C55/00 ,  B29L7/00 ,  B29K27/00 ,  B29K105/00

Abstract: A method for preparing a pyroelectric polymer film based on a combined process of solution casting and uniaxial stretching is disclosed. The pyroelectric polymer film is firstly prepared by solution casting, afterwards, the casted film is subjected to uniaxial stretching when the film is in a semi-cured state (wet film). Thus a larger stretching ratio (>10) at a lower temperature (even at room temperature) is realized. Without undergoing a further poling process, the as-stretched film does have a fairly, good pyroelectric performance. Moreover, the surface of the stretched film is smoother and has fewer surface defects.