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Preparation and Properties of Smoke Suppressive Silicone Oil Modified by Dicyandiamide

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Abstract

In order to improve the smoke suppression of silicone oil, relatively high nitrogen content silicone oil was synthesized by the reaction of dicyandiamide (DCD) and epoxy-terminated silicone oil (ETSO) and named DCDSO. The molecular structure of DCDSO was characterized by Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance spectroscopy (NMR). The flame ignition and cone calorimetry test (CCT) were used to investigate the smoke suppression effect of DCDSO. The results showed that the introduction of DCD significantly improved the smoke suppression performance of DCDSO. When the molar ratio of the epoxy group in ETSO and the primary amino group in DCD was 1:1.3, the flame height and the total smoke production were significantly reduced. Thermogravimetric analysis (TGA), thermogravimetric infrared analysis (TG-IR) and thermal field emission scanning electron microscopy (SEM) were used to explore the mechanism of smoke suppression. The mechanism of smoke suppression is that the introduction of DCD reduces the rearrangement decomposition, promotes the free radical oxidation decomposition and the formation of condensed phase, and thus reduces the generation and release of smoke.

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Data availability

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This work was supported by the Fuyang Science and Technology Department, China (FK20208021).

Funding

This work was supported by Fuyang Science and Technology Department (Grant numbers FK20208021).

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, People’s Republic of China

    Xu Shi, Weibing Xu, Zhengfa Zhou, Haihong Ma & Fengmei Ren

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  3. Zhengfa Zhou
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Xu Shi wrote the main manuscript text and prepared all figures. Weibing Xu, Zhengfa Zhou, Haihong Ma and Fengmei Ren reviewed the manuscript.

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Correspondence to Weibing Xu.

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Shi, X., Xu, W., Zhou, Z. et al. Preparation and Properties of Smoke Suppressive Silicone Oil Modified by Dicyandiamide. Silicon 15, 4325–4334 (2023). https://doi.org/10.1007/s12633-023-02356-z

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