Effect and mechanism study of mixed-dimensional palygorskite clay on thermo-stability, flame-retardant and smoke-suppression for PC/ABS composites

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2024-06-14 DOI:10.1002/vnl.22129

Zeyang Gao, Yu Zhu, Bihe Yuan, Bin Mu

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引用次数: 0

Abstract

This investigation investigates the effects and mechanisms of mixed-dimensional palygorskite clay (MDPal) on the thermal stability, flame retardancy and smoke suppression of polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) composites. MDPal, comprising palygorskite and illite as its main mineral components, is characterized by its interwoven morphology and the presence of Fe ions in its octahedral framework, making it highly promising for enhancing the fire safety of flammable composites. The incorporation of MDPal at a 10 wt% dosage leads to significant improvements in the fire safety of PC/ABS composites, including the reduction of 29.8% in peak heat release rate, 9.9% in total heat release, 34.5% in peak smoke production rate and 15.7% in total smoke production compared to pure PC/ABS. Besides, there is a notable increase of 31.5% in tensile strength and 80.4% in elongation at break when the content is 5 wt%. This research offers valuable insights into the application of MDPal for enhancing the thermal stability, flame retardancy and smoke suppression of flammable polymers.

Highlights

MDPal plays dual functions in gas and condensed phases as a flame retardant.
MDPal effectively reduces the heat and smoke release of PC/ABS composites.
MDPal improves the thermo-stability and tensile strength of PC/ABS composites.
The flame-retardant and smoke-suppression mechanisms of PALC are elucidated.

Abstract Image

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混维堇青石粘土对 PC/ABS 复合材料热稳定性、阻燃性和抑烟性的影响及机理研究

本研究探讨了混维白云石粘土（MDPal）对聚碳酸酯/丙烯腈-丁二烯-苯乙烯（PC/ABS）复合材料的热稳定性、阻燃性和烟雾抑制的影响和机理。MDPal 的主要矿物成分是白云石和伊利石，其特点是形态交织，八面体框架中含有铁离子，因此极有希望提高易燃复合材料的防火安全性。与纯 PC/ABS 相比，添加 10 wt% 的 MDPal 可显著提高 PC/ABS 复合材料的防火安全性，包括峰值热释放率降低 29.8%，总热释放率降低 9.9%，峰值烟雾产生率降低 34.5%，总烟雾产生率降低 15.7%。此外，当含量为 5 wt% 时，拉伸强度和断裂伸长率分别显著提高了 31.5% 和 80.4%。这项研究为应用 MDPal 提高易燃聚合物的热稳定性、阻燃性和烟雾抑制能力提供了宝贵的见解。MDPal 在气相和凝结相中具有阻燃剂的双重功能，可有效降低 PC/ABS 复合材料的热量和烟雾释放量。

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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.