The effect of nano kaolinite as a filler in the coarse wool – vinyl ester composite

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2025-03-25 DOI:10.1002/vnl.22217

Seiko Jose, Sabu Thomas, Sradha Mariya Thomas, Jesiya Susan George, Anjumol Kidangayil Sali

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引用次数: 0

Abstract

In comparison with plant fibers, wool is under-exploited in composite applications. Coarse wool with >50 micron diameter is generally not preferred for apparel, blankets, or carpets and remains underutilized. In the reported work, non-textile grade coarse wool fabric was coated with vinyl ester resin (VER), and subsequently, composites were developed. To increase the mechanical properties of the composite, nano kaolinite was introduced as a filler. The effect of various concentrations (0.25, 0.50, 1.0 %) of nano kaolinite (NK) on the physico-mechanical and aging characteristics of the developed composites was investigated. The results inferred that a minor addition of nano kaolinite (0.5%) in the wool + VER composite resulted in an increase of 16% tensile strength, 31% modulus, and 19 % impact strength, respectively. The findings of the dynamic mechanical analysis showed that, with 0.5% nano kaolinite addition, the composite's storage and loss modulus were exhibited as 1.9 and 0.22 GPa, respectively, which are higher than those of the control wool + VER composites (1.1 and 0.15 GPa storage and loss modulus respectively). The SEM images depicted a moderate adhesion between the wool fiber and the vinyl ester resin. The presence of nano kaolinite in the composite results in a marginal reduction in the water contact angle and an increase in the water diffusion properties. The thermal and UV aging properties of the wool-vinyl ester composites were improved with the addition of nano kaolinite; however, the developed composites showed poor soil degradation.

Highlights

Composites were developed with non-textile-grade coarse wool fabric and vinyl ester resin.
To increase the mechanical properties of the composite, nano kaolinite was utilized.
The effect of nano kaolinite on the properties of the composite was analyzed.
Nano kaolinite significantly improved the mechanical properties of the composites.
Most importantly, the aging properties of the composites were substantially improved.

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研究了纳米高岭石在粗羊毛-乙烯基酯复合材料中的填充效果

与植物纤维相比，羊毛在复合材料中的应用尚未得到充分开发。直径为50微米的粗羊毛通常不适合用于服装、毛毯或地毯，而且尚未得到充分利用。在非纺织级粗羊毛织物上涂覆乙烯基酯树脂（VER），然后开发复合材料。为了提高复合材料的力学性能，引入了纳米高岭石作为填料。研究了不同浓度（0.25、0.50%、1.0%）纳米高岭石（NK）对复合材料物理力学性能和老化性能的影响。结果表明，在羊毛+ VER复合材料中添加少量纳米高岭石（0.5%），拉伸强度增加16%，模量增加31%，冲击强度增加19%。动态力学分析结果表明，添加0.5%纳米高岭石时，复合材料的储存模量和损失模量分别为1.9和0.22 GPa，高于对照羊毛+ VER复合材料的1.1和0.15 GPa。扫描电镜图像描绘了羊毛纤维和乙烯基酯树脂之间的适度粘附。纳米高岭石在复合材料中的存在导致水接触角的边际降低和水扩散性能的增加。纳米高岭石的加入改善了羊毛-乙烯基酯复合材料的热老化性能和紫外线老化性能；然而，发育的复合材料表现出较差的土壤降解。以非纺织级粗毛织物与乙烯基酯树脂为原料，研制了复合材料。为了提高复合材料的力学性能，采用了纳米高岭石。分析了纳米高岭石对复合材料性能的影响。纳米高岭石显著改善了复合材料的力学性能。最重要的是，复合材料的老化性能得到了显著改善。

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.