Solid‐state microcellular high temperature vulcanized (HTV) silicone rubber foam with carbon dioxide

ABSTRACT A series of microcellular high temperature vulcanized (HTV) silicone rubber foams were prepared using CO2 as a physical blowing agent. Rheological properties, gas diffusive behavior, and foaming parameters of silicone rubber were investigated. The results show that saturation pressure has a...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science Vol. 134; no. 20; pp. np - n/a
Main Authors: Yang, Qian, Yu, Haitao, Song, Lixian, Lei, Yajie, Zhang, Fengshun, Lu, Ai, Liu, Tao, Luo, Shikai
Format: Journal Article
Language:English
Published: Hoboken Wiley Subscription Services, Inc 20.05.2017
Subjects:
Blowing agents
Carbon dioxide
Diffusivity
Foaming
Foams
high temperature vulcanized silicone rubber
Materials science
microcellular foam
Polyetherimides
Polymers
Saturation
Silicone rubber
ISSN:0021-8995, 1097-4628
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:ABSTRACT A series of microcellular high temperature vulcanized (HTV) silicone rubber foams were prepared using CO2 as a physical blowing agent. Rheological properties, gas diffusive behavior, and foaming parameters of silicone rubber were investigated. The results show that saturation pressure has a significant effect on the diffusivity of CO2 in HTV silicone rubber matrix. The gas concentration and diffusivity increase from 2.45 wt % to 3.24 wt %, and from 1.62 × 10−5 cm2/s to 7.83 × 10−5 cm2/s as the saturation pressure increases from 2 MPa to 5 MPa, respectively. The value of the gas diffusivity in HTV silicone rubber is almost 1000 times higher than that of the gas diffusivity in polyetherimide (PEI) matrix. Additionally, microcellular HTV silicone rubber foams with the smallest cell diameter of 9.8 μm and cell density exceeding 108 cells/cm3 are achieved. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44807.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
content type line 23
ISSN:0021-8995
1097-4628
DOI:10.1002/app.44807