A comparative study on the mechanical and flammability properties of aluminum hydroxide and hollow glass beads-filled polypropylene composites

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2024-09-15 DOI:10.1002/vnl.22164

Yitao Zheng, Fu Gu, Zheng Wang, Yun Zhou, Liqiang Xu, Philip Hall

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引用次数: 0

Abstract

Lightweight polypropylene (PP) composites with high flame retardancy and high thermal stability were required for automobile, electrical and electronic applications. Aluminum hydroxide (Al(OH)₃) and two hollow glass beads (HGB) were selected as fillers for polypropylene composite fabrication. The incorporation of 10 wt% HGB (iM30K) into the PP matrix leads to a 3.5% density reduction, and 10 wt% Al(OH)₃ increased the density by 5.4%. The cone calorimeter test (CCT) showed the lowest PHRR of 536.6 kW/m² and peak smoke production rate of 0.061 m²/s was recorded for 10 wt% HGB (iM30K) loading. The formulation with 10 wt% Al(OH)₃ loading had the lowest flammability; however, the Al(OH)₃ content was not sufficient for a consistent flame-resistant performance. The incorporation of HGB and Al(OH)₃ resulted in an enhancement of both tensile and flexural modulus; however, it was observed that the tensile, flexural, and impact strengths exhibited a decrement with an increase in the concentration of HGB or Al(OH)₃. Moreover, the thermogravimetric analysis (TGA) results indicated that at the same filler content, HGB (S60HS) filled PP composites have the highest thermal stability among the prepared composites.

Highlights

Effects of HGB and Al(OH)₃ on flame retardancy and thermal stability of PP.
Small size HGB (iM30K) exhibited superior smoke suppression performance.
Effects of HGB on density reduction of PP based composites.
Mechanical properties of HGB or Al(OH)₃ filled PP were investigated.
The SEM images revealed the breakage and dispersion of HGB in the composites.

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氢氧化铝和空心玻璃珠填充聚丙烯复合材料机械性能和易燃性比较研究

汽车、电气和电子应用领域需要具有高阻燃性和高热稳定性的轻质聚丙烯（PP）复合材料。氢氧化铝（Al(OH)3）和两种空心玻璃微珠（HGB）被选为聚丙烯复合材料制造的填料。在聚丙烯基体中加入 10 wt% 的 HGB (iM30K) 可使密度降低 3.5%，而 10 wt% 的 Al(OH)3 可使密度增加 5.4%。锥形量热计测试（CCT）显示，添加 10 wt% HGB (iM30K) 的 PHRR 最低，为 536.6 kW/m2，峰值产烟率为 0.061 m2/s。Al(OH)3 含量为 10 wt% 的配方具有最低的可燃性；然而，Al(OH)3 的含量不足以实现稳定的阻燃性能。加入 HGB 和 Al(OH)3 后，拉伸和弯曲模量都有所提高；但观察到拉伸、弯曲和冲击强度随着 HGB 或 Al(OH)3 浓度的增加而降低。此外，热重分析（TGA）结果表明，在相同的填料含量下，HGB（S60HS）填充 PP 复合材料的热稳定性在所制备的复合材料中最高。小尺寸 HGB（iM30K）具有优异的烟雾抑制性能。HGB 对降低聚丙烯基复合材料密度的影响。研究了 HGB 或 Al(OH)3 填充 PP 的机械性能。SEM 图像显示了 HGB 在复合材料中的断裂和分散情况。

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.