Development of a New Silica Aerogel-Polypropylene Foam Composite as a Highly Flexible Thermal Insulation Material

被引：19

作者：

Yoda, Satoshi ^{[1
]}

Takeshita, Satoru ^{[1
]}

Ono, Takumi ^{[1
]}

Tada, Ryosuke ^{[2
]}

Ota, Hideo ^{[2
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Res Inst Chem Proc Technol, Tsukuba, Ibaraki, Japan

[2] Inoac Technol Ctr, Hadano, Japan

来源：

FRONTIERS IN MATERIALS | 2021年 / 8卷

关键词：

silica aerogel; silica aerogel composite; polypropylene foam; thermal insulating material; flexible aerogel composite; simulation;

D O I：

10.3389/fmats.2021.674846

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new flexible thermal insulation sheet, a composite of silica aerogel with polypropylene (PP) foam, has been developed. Even though a large volume ratio of silica aerogel (97%) was included, the composite showed high flexibility. Thermal conductivity of the composite was 0.016 W/(m.K) at 298 K, which is as low as silica aerogel monolith. Silica aerogel flaking, which has been a problem in practical applications, is very low in this composite due to skin layers of the polymer-foam composite. A supercritical drying process for rolled sheets of the material for large-scale production is also described. Simulations of extraction of 2-propanol from a silica alcogel revealed that rolled composite sheets with small spaces between the sheet composite are able to dry in a reasonable extraction time. These findings led to effective on production of this material on a pilot industrial scale.

引用

页数：9

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