Scholarlink

<p>The current research examines the effect of mineral particulate fillers on physical, hygral, and compressive properties of epoxy-based composites that have been designed with silica sand and aluminium trihydrate (ATH) as major reinforcements. A systematic formulation approach was taken by varying the epoxy matrix by 90, 80, 70 and 60&#xa0;wt.% and the filler loading of silica sand and ATH were increased step by step to 10, 20, 30 and 40&#xa0;wt.% respectively, while individual and hybrid combinations of silica sand and ATH were considered. In each formulation (S1–S13), samples with fixed quantities of glass beads (0.32&#xa0;wt.%), Cabosil&#xa0;powder (1.33&#xa0;wt.%), and zinc stearate (1.07&#xa0;wt.%) were considered to maintain consistency in processing and dispersion stability. Density determinations show that there is a gradual increase with filler loading which suggests that the matrix is densifying effectively, especially at higher silica sand and ATH concentrations. The research on water absorption indicates that there is less uptake of moisture in filler-modified systems than in neat epoxy, and the hybrid and silica-dominant systems have a higher resistance because they fill the voids and possess low polymer chain mobility. The findings of compressive strength indicate that the composite 20–30&#xa0;wt.% silica sand and hybrid particulate system has a significant increase in the compressive strength to about 95&#xa0;MPa whereas the higher loading of ATH (40&#xa0;wt.%) causes agglomeration leading to localized stress concentration and reduced compressive strength. Overall, the findings proves that the structure–property relationships in epoxy composites to be used as load-bearing and moisture-resistant materials are determined by optimized filler type and loading in demonstrating the desired properties of the composites.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Evaluating the Density, Water Absorption and Compressive Behavior of Silica Sand/Aluminium Trihydrate Based Epoxy Composites

  • 期刊论文

  • 发表日期：

    2026年4月7日

查看全文
  • Shivaling I. Mukanavar,
  • D. Shrinivasa Mayya,
  • K. S. Lokesh,
  • Arvind Kapadia

摘要

The current research examines the effect of mineral particulate fillers on physical, hygral, and compressive properties of epoxy-based composites that have been designed with silica sand and aluminium trihydrate (ATH) as major reinforcements. A systematic formulation approach was taken by varying the epoxy matrix by 90, 80, 70 and 60 wt.% and the filler loading of silica sand and ATH were increased step by step to 10, 20, 30 and 40 wt.% respectively, while individual and hybrid combinations of silica sand and ATH were considered. In each formulation (S1–S13), samples with fixed quantities of glass beads (0.32 wt.%), Cabosil powder (1.33 wt.%), and zinc stearate (1.07 wt.%) were considered to maintain consistency in processing and dispersion stability. Density determinations show that there is a gradual increase with filler loading which suggests that the matrix is densifying effectively, especially at higher silica sand and ATH concentrations. The research on water absorption indicates that there is less uptake of moisture in filler-modified systems than in neat epoxy, and the hybrid and silica-dominant systems have a higher resistance because they fill the voids and possess low polymer chain mobility. The findings of compressive strength indicate that the composite 20–30 wt.% silica sand and hybrid particulate system has a significant increase in the compressive strength to about 95 MPa whereas the higher loading of ATH (40 wt.%) causes agglomeration leading to localized stress concentration and reduced compressive strength. Overall, the findings proves that the structure–property relationships in epoxy composites to be used as load-bearing and moisture-resistant materials are determined by optimized filler type and loading in demonstrating the desired properties of the composites.