Performance of Thermal Protection Coating of Fuze and Its Packaging Materials in Cook-off Test

doi:10.3969/j.issn.1000-1093.2021.06.006

Abstract

Abstract: A sandwich structural coating with both fire resistance and thermal insulation properties is developed to improve the heat insulation/fire resistance performances of fuze and its packaging box. The use of coatings help to avoid the potential safety hazards caused by thermal stimulation. The slow and fast cook-off tests were made to analyze the thermal insulation performances of different coating structures. The results show that the fireproof coating used alone could not serve as a thermal insulation in the slow cook-off test. After applying an insulation outer coating layer, a strong protective layer could be formed under thermal stimulation. The temperature on the back side of steel plate is reduced by 32 ℃ in the slow cook-off test and 157 ℃ in fast cook-off test. The sandwich structural coating is applied to fuze shells and their packaging boxes. And it plays an important role in heat insulation/fire resistance performance. Compared with the unprotected specimen, the sandwich structural coatings could reduce the temperatures on the back side of steel plate by 21 ℃ and 33 ℃ in the slow cook-off test, and 117 ℃ and 105 ℃ in the fast cook-off test.

Key words: fuze, packagingmaterial, thermalprotectioncoating, cook-offtest, thermalinsulation, fireproof

CLC Number:

TJ430.4

PAN Yue， LI Dinghua， YANG Rongjie， HAN Yanhui， LOU Wenzhong. Performance of Thermal Protection Coating of Fuze and Its Packaging Materials in Cook-off Test[J]. Acta Armamentarii, 2021, 42(6): 1169-1177.

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