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Journal of Nanoparticle Research

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01.08.2020 | Research paper

Flame retardant polyurethane sponge/MTMS aerogel composites with improved mechanical properties under ambient pressure drying

verfasst von: Xiaoxu Wu, Siqi Huang, Yan Zhang, Long Shi, Yan Luo, Xi Deng, Qiong Liu, Zhi Li

Erschienen in: Journal of Nanoparticle Research | Ausgabe 8/2020

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Abstract

Considering the low thermal stability and high flammability of polyurethane sponge (PUS) and the poor mechanical performance of methyltrimethoxysilane (MTMS) aerogels, their combination for improvement of characteristics was investigated. The density of prepared polyurethane sponge/MTMS aerogel (PUSMA) composites increased exponentially between 0.032 and 0.13 g/cm³ with the MTMS aerogel content rising, and the thermal conductivity increased linearly between 36.5 and 44.3 mW/(m K). The good hydrophobicity was maintained with a contact angle up to 145.0°. Despite the combination being physical effects, the PUSMA composite presented improved mechanical properties with better integrality and increased elastic modulus. Thermogravimetric analyses suggested that the synergistic effect in the combination improved the thermal stability. The flame combustion probability and the peak heat release rate with flame combustion decreased significantly, implying enhanced flame retardancy of the PUSMA composite. This study from the perspective of composites provides new insight into the development of new high-efficiency aerogel-based thermal insulation materials.

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Titel: Flame retardant polyurethane sponge/MTMS aerogel composites with improved mechanical properties under ambient pressure drying
verfasst von: Xiaoxu Wu
Siqi Huang
Yan Zhang
Long Shi
Yan Luo
Xi Deng
Qiong Liu
Zhi Li
Publikationsdatum: 01.08.2020
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 8/2020
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-020-04958-9

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