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Investigation of flame-retarded poly(butylene succinate) composites using MHSH as synergistic and reinforced agent

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Abstract

Magnesium hydroxide sulfate whisker (MHSH) was used as flame-retarded synergistic agent of intumescent flame retardant (IFR), and to prepare flame-retarded PBS composites. The mechanical performance and flame-retardant properties of composites were investigated. Experimental data showed that an appropriate MHSH loading favored the mechanical performance and flame-retardant properties of composites. When IFR and MHSH loadings were 23 and 2 wt%, respectively, the limited oxygen index value of 39.8% and UL-94 V0 rate of composite could be achieved. The tensile strength increased by 33.3% in comparison with that of composite only prepared by 25 wt% IFR. XRD analysis indicated that the addition of MHSH significantly increased the crystallization of composites. FT-IR analysis demonstrated that P–O–Mg–O–P bonds could be generated during pyrolysis process. TG and cone calorimeter analyses both indicated that the incorporation of MHSH and IFR lowered the flammability of composites by limiting heat and mass transfer. Based on the experimental and analyses data, especially the SEM analysis, possible mechanism was proposed. The combustion products of MHSH and IFR provided a flame shield during combustion process. MHSH played a reinforcement effect in the shield. A more stable three-dimensional intumescent charred layer could not only effectually prevent the melt from dripping but also hinder the diffusion of oxygen and heat into the interior substrate.

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Acknowledgements

The authors appreciate The National Natural Science Foundation of China (Contract Grant Number: 51603118), Natural Science Foundation of Shaanxi Province (Contract Grant Number: 2015JQ3088) and Academic Leader Team Program of Shaanxi University of Science and Technology (Contract Grant Number: 2013XSD25) for financial support.

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Authors and Affiliations

  1. Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper, Shaanxi University of Science and Technology, Xi’an, 710021, Shaanxi Province, People’s Republic of China

    Xiaopeng Yue, Jian Li & Pengjie Liu

  2. Key Laboratory of Paper Based Functional Materials of China National Light Industry, Xi’an, People’s Republic of China

    Xiaopeng Yue, Jian Li, Pengjie Liu & Yicun Lin

  3. College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi’an, 710021, Shaanxi Province, People’s Republic of China

    Pengjie Liu & Yicun Lin

  4. Guangdong Advanced Technical School of Light Industry, Guangzhou, 511400, Guangdong, People’s Republic of China

    Wenjuan Pu

  5. College of Bioresources Chemicals and Materials Engineering, Shaanxi University of Science and Technology, Xi’an, People’s Republic of China

    Xiaopeng Yue

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  1. Xiaopeng Yue
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  2. Jian Li
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Correspondence to Xiaopeng Yue.

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Yue, X., Li, J., Liu, P. et al. Investigation of flame-retarded poly(butylene succinate) composites using MHSH as synergistic and reinforced agent. J Mater Sci 53, 5004–5015 (2018). https://doi.org/10.1007/s10853-017-1915-7

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  • DOI: https://doi.org/10.1007/s10853-017-1915-7

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