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1. WO2020008372 - POLYMER/EXFOLIATED NANO-COMPOSITE FILMS WITH SUPERIOR MECHANICAL PROPERTIES

Publication Number WO/2020/008372
Publication Date 09.01.2020
International Application No. PCT/IB2019/055652
International Filing Date 02.07.2019
IPC
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
J
WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
5
Manufacture of articles or shaped materials containing macromolecular substances
18
Manufacture of films or sheets
[IPC code unknown for C01B 32/182]
[IPC code unknown for C01B 32/19]
[IPC code unknown for C01B 32/198]
[IPC code unknown for C08K 3/013]
B PERFORMING OPERATIONS; TRANSPORTING
82
NANO-TECHNOLOGY
Y
SPECIFIC USES OR APPLICATIONS OF NANO-STRUCTURES; MEASUREMENT OR ANALYSIS OF NANO-STRUCTURES; MANUFACTURE  OR TREATMENT OF NANO-STRUCTURES
30
Nano-technology for materials or surface science, e.g. nano-composites
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
D
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
7
Producing flat articles, e.g. films or sheets
01
Films or sheets
C08J 5/18 (2006.01)
C01B 32/182 (2017.01)
C01B 32/19 (2017.01)
C01B 32/198 (2017.01)
C08K 3/013 (2018.01)
B82Y 30/00 (2011.01)
CPC
B29C 55/02
B29D 7/01
B82Y 30/00
C08J 5/18
C08K 3/013
Applicants
  • UNIVERSITY OF NOTRE DAME DU LAC [US/US]; 1400 East Angela Blvd. South Bend, IN 46617, US
Inventors
  • PANG, Yunsong; US
  • LUO, Tengfei; US
Agents
  • STRINGHAM, John C.; US
  • TODD, Matthew D.; US
Priority Data
62/693,65603.07.2018US
62/776,81307.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) POLYMER/EXFOLIATED NANO-COMPOSITE FILMS WITH SUPERIOR MECHANICAL PROPERTIES
(FR) FILMS NANO-COMPOSITES POLYMÈRES/EXFOLIÉS AYANT DES PROPRIÉTÉS MÉCANIQUES SUPÉRIEURES
Abstract
(EN)
Nano-composite films and methods for their fabrication. The nano-composite films include a polymer matrix (e.g., polyethylene, polypropylene, or the like) and a filler capable of exfoliation such as graphene or hexagonal boron nitride (e.g., TrGO). The filler provides reinforcement, increasing tensile strength, Young's modulus, or both for the resulting nano-composite film, as compared to what it would be without the filler. The nano-composite film may have a specific tensile strength that is greater than 1 GPa/g/cm3, a specific Young's modulus that is greater than 100 GPa/g/ccm3, or both. Tensile strength and modulus values of up to 3.7 GPa/g/cm3 and 125 GPa/g/cm3, respectively, have been demonstrated. The film maybe formed by combining powdered filler and polymer matrix powder in a solvent (e.g.,decalin), high-shear extruding the resulting solution to disentangle the polymer chains and exfoliate the filler, freezing the solution to form a solid film, and then drawing the film.
(FR)
L'invention concerne des films nano-composites et leurs procédés de fabrication. Les films nano-composites comprennent une matrice polymère (par exemple, le polyéthylène, le polypropylène, ou analogue) et une charge capable d'exfoliation, telle que du graphène ou du nitrure de bore hexagonal (par exemple, TrGO). La charge fournit un renforcement, augmentant la résistance à la traction, le module de Young, ou les deux pour le film nano-composite obtenu, par rapport à ce qu'il serait dépourvu de la charge. Le film nano-composite peut avoir une résistance spécifique à la traction qui est supérieure à 1 GPa/g/cm3, un module de Young spécifique qui est supérieur à 100 GPa/g/ccm3, ou les deux. Des valeurs de résistance à la traction et de module allant jusqu'à 3,7 GPa/g/cm3 et 125 GPa/g/cm3, respectivement, ont été mises en évidence. Le film peut être formé par la combinaison d'une charge en poudre et d'une poudre de matrice polymère dans un solvant (par exemple, de la décaline), l'extrusion à cisaillement élevé de la solution obtenue pour le démêlage des chaînes polymères et l'exfoliation de la charge, la congélation de la solution pour former un film solide, puis l'étirage du film.
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