Enhancing Flame-Retardant Properties of Polyurethane Composites Using N-β-(Aminoethyl)-γ-aminopropyl Trimethoxysilane and Carbon Black Co-Modified Ammonium Polyphosphate

IF 2.9 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Coatings Pub Date : 2024-09-02 DOI:10.3390/coatings14091126

Lisha Fu, Wanjun Hao, Baoluo Xu, Kexi Zhang, Jianhua Bi, Jingxing Wu, Zhong Wang

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引用次数: 0

Abstract

The search for a straightforward method to obtain efficient, affordable, and long-lasting flame retardants with both desirable flame-retardant and mechanical properties for polyurethane (PU) composites remains a significant challenge. In this study, the surface of ammonium polyphosphate (APP) was modified using N-β-(aminoethyl)-γ-aminopropyl trimethoxysilane (KH792) via an ion-exchange reaction, and the modified APP was coated with nanoscale carbon black (CB) to obtain CBAPP. CBAPP demonstrated good compatibility within the PU matrix and notably increased the tensile strength of the PU composites. Furthermore, CBAPP significantly enhanced the flame-retardant properties of the PU composites. The CBAPP/PU composite with a CBAPP mass fraction of 20% achieved a limiting oxygen index of 41.5% and a UL-94 class of V-0. According to the results of this study, our modification approach can be applied to develop other high-performance flame-retardant polymer-based composites, representing a significant contribution to the field of fire safety materials.

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使用 N-β-(氨基乙基)-γ-氨基丙基三甲氧基硅烷和炭黑共改性聚磷酸铵增强聚氨酯复合材料的阻燃性能

在聚氨酯（PU）复合材料中，寻找一种既具有理想阻燃性能又具有机械性能的高效、经济、长效阻燃剂的直接方法仍然是一项重大挑战。在这项研究中，通过离子交换反应，使用 N-β-（氨乙基）-γ-氨丙基三甲氧基硅烷（KH792）对聚磷酸铵（APP）表面进行改性，并在改性后的 APP 上涂覆纳米级炭黑（CB），从而获得了 CBAPP。CBAPP 在聚氨酯基体中表现出良好的相容性，并显著提高了聚氨酯复合材料的拉伸强度。此外，CBAPP 还大大提高了聚氨酯复合材料的阻燃性能。CBAPP 质量分数为 20% 的 CBAPP/PU 复合材料的极限氧指数为 41.5%，UL-94 等级为 V-0。根据这项研究的结果，我们的改性方法可用于开发其他高性能阻燃聚合物基复合材料，这是对防火安全材料领域的重大贡献。

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来源期刊

Coatings Materials Science-Surfaces, Coatings and Films

CiteScore

5.00

自引率

11.80%

发文量

1657

审稿时长

1.4 months

期刊介绍： Coatings is an international, peer-reviewed open access journal of coatings and surface engineering. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided. There are, in addition, unique features of this journal: * manuscripts regarding research proposals and research ideas will be particularly welcomed * electronic files or software regarding the full details of the calculation and experimental procedure - if unable to be published in a normal way - can be deposited as supplementary material