Ionic liquids modified MXene as a flame retardant synergist for the unsaturated polyester resin

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2023-11-22 DOI:10.1002/vnl.22066

Ming Gao, Jiyu Wang, Yilin Gao, Jiawei Chen, Lijun Qian, Zhichuan Qiao

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引用次数: 0

Abstract

I-MXene with excellent dispersibility was successfully prepared using the chemical grafting method with 1-butyl-3-methylimidazole hexafluorophosphate ([BMIM]PF₆) onto MXene. It was characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM), which was added to unsaturated polyester resin (UPR) as a synergistic agent, combined with ammonium polyphosphate (APP) to improve the flame retardancy of composites. Tensile strength of the composites was measured using the electronic universal material testing machine. The results showed that the incorporation of I-MXene was able to increase the tensile strength and elongation at break of the composites. The flame retardancy and thermal stability of the composites were investigated through limiting oxygen index (LOI), cone calorimeter test (CCT), TG and Fourier-infrared spectroscopy (FT-IR). The experimental data showed that the LOI values of I-MXene/APP/UPR composites increased to 29.1%, complying with UL-94V-0 rating. Its peak heat release rate (pHRR) and total heat release (THR) were 19.35% and 16.35% lower than those of APP/UPR composites, and the total smoke production (TSP) was reduced by 10.78%. When heated to 800°C, the amount of residual carbon increased by 7.71%. The catalytic effect of I-MXene contributed to the formation of a compact and expanded carbon layer, resulting in further suppression of heat and smoke release.

Highlights

A new type of modified MXene is obtained.
It has good dispersivity and synergistic effects.
It has good flame retardancy and smoke suppression effects.

Abstract Image

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离子液体改性MXene作为不饱和聚酯树脂的阻燃增效剂

采用1-丁基-3-甲基咪唑六氟磷酸([BMIM]PF6)化学接枝法制备了分散性良好的I-MXene。通过x射线衍射(XRD)和透射电镜(TEM)对其进行表征，将其作为增效剂加入到不饱和聚酯树脂(UPR)中，与聚磷酸铵(APP)结合，提高复合材料的阻燃性。采用电子万能材料试验机对复合材料的拉伸强度进行了测试。结果表明，I-MXene的掺入能够提高复合材料的抗拉强度和断裂伸长率。通过极限氧指数(LOI)、锥量热仪(CCT)、热重测试(TG)和傅里叶红外光谱(FT-IR)研究了复合材料的阻燃性和热稳定性。实验数据表明，I-MXene/APP/UPR复合材料的LOI值提高到29.1%，符合UL-94V-0等级。与APP/UPR复合材料相比，其峰值放热率(pHRR)和总放热率(THR)分别降低19.35%和16.35%，总产烟量(TSP)降低10.78%。当加热到800℃时，残碳量增加了7.71%。I-MXene的催化作用有助于形成致密膨胀的碳层，从而进一步抑制热量和烟雾的释放。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.