Optimum preparation of organopolysilazane composite coatings and their role in protecting combustible cartridge cases

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL Surfaces and Interfaces Pub Date : 2025-02-01 DOI:10.1016/j.surfin.2025.105804

Mengde Wu, Zhenggang Xiao

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Abstract

A series of organopolysilazane (OPSZ) composite coatings were synthesized via a grafting reaction between OPSZ and epoxy resin, which were applied to protect the surfaces of combustible cartridge cases. The chemical compositions were characterized by Fourier-transform infrared spectroscopy and X-ray photoelectron spectroscopy. The results of heat-resistance tests indicated that the optimum OPSZ composite coating could prevent the combustible cartridge cases from burning for 175.56 s at 250 °C. The glass transition temperatures (T_g) of the OPSZ composite coatings were in the range of 254.7–454.0 °C. The results indicated that the OPSZ composite coatings could effectively improve the heat resistance of combustible cartridge cases. Based on scanning electron microscopy images after saltwater exposure tests, the saltwater absorption rate, and the water contact angle, the OPSZ composite coatings could effectively improve the environmental adaptability of combustible cartridge cases. In this study, the ceramic precursor OPSZ, as a protective material, provides a novel way to fabricate various coatings to protect combustible cartridge cases from high temperatures, environmental humidity, and corrosive air.

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来源期刊

Surfaces and Interfaces Chemistry-General Chemistry

CiteScore

8.50

自引率

6.50%

发文量

753

审稿时长

35 days

期刊介绍： The aim of the journal is to provide a respectful outlet for ''sound science'' papers in all research areas on surfaces and interfaces. We define sound science papers as papers that describe new and well-executed research, but that do not necessarily provide brand new insights or are merely a description of research results. Surfaces and Interfaces publishes research papers in all fields of surface science which may not always find the right home on first submission to our Elsevier sister journals (Applied Surface, Surface and Coatings Technology, Thin Solid Films)