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Licensed Unlicensed Requires Authentication Published by De Gruyter March 9, 2021

Effects of Expanded Graphite, Aluminum Hydroxide, and Kaolin on Flame Retardancy and Smoke Suppression of Polyurethane Composites

Q. Cao, Q.-G. Cao, X.-X. Qiu and J. Song


Polyurethane is a widely used polymer that has good abrasion resistance and low-temperature resistance. However, polyurethane composite materials are highly inflammable and thus require the use of flame retardants. This study selected green and environment-friendly flame retardants such as expanded graphite, aluminum hydroxide, and kaolin to be used as individual or paired retardants to produce polyurethane composites. By analyzing the potential and mechanical properties of the polyurethane composites, it was found that the composite material with the flame retardant composed of graphite and modified kaolin had better flame retardancy, smoke suppression performance, and high thermal stability.

Qing-Gui Cao, College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, PRC


This work was supported by the National Natural Science Foundation of China (no. 51804034, no. 41807211, no. 51904032).


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Received: 2020-02-22
Accepted: 2020-06-06
Published Online: 2021-03-09
Published in Print: 2021-03-26

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