A comparative analysis of abrasive sandpaper made from two locally sourced and easily available materials, periwinkle and palm kernel shells was carried out to evaluate their viability as replacements for foreign imported abrasives sandpaper. Composites of crushed shells with polyester resin bond were developed separately for the periwinkle and palm kernel shell samples using mould compression, and the sandpaper prototype was produced using hand-spray method. A study on the physico-mechanical properties of the produced composite carried out was found that at 12 wt.% content of resin, periwinkle shell (PWS)/resin composites had higher physico-mechanical properties such as density with 77.74 % difference, hardness with 17.13 % difference and compressive strength with 182.42 % difference over the palm kernel shell-resin composites. Water absorption for palm kernel (PKS) shell/resin composite was a 186.59 % difference over the PWS/resin composite. Surface morphology using SEM revealed PWS/resin composite to have less distortional effects on the grains from compressive force of 15.7 N/mm2 applied compared to the palm kernel shell grains, and also shows PWS grains held together in close packing by the resin bond. The concentration used for sandpaper production was 87 wt.% of periwinkle shell grains to 12 wt.% of resin. The obtained physical and mechanical properties were compared to garnet sandpaper and found to be close to acceptable standards.
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机译：对由两种本地采购且易于获得的材料（长春花和棕榈仁壳）制成的磨料砂纸进行了比较分析，以评估其替代国外进口磨料砂纸的可行性。分别使用模压法开发了用于长春花和棕榈仁壳样品的具有聚酯树脂键的压碎壳复合材料，并通过手工喷涂方法生产了砂纸原型。对所生产的复合材料的物理机械性能的研究发现，在树脂的含量为12 wt％时，长春花壳（PWS）/树脂复合材料具有较高的物理机械性能，例如密度相差77.74％，硬度相差70％。与棕榈仁壳-树脂复合材料相比，相差17.13％，抗压强度与相差182.42％。棕榈仁（PKS）壳/树脂复合材料的吸水率与PWS /树脂复合材料的差为186.59％。使用SEM的表面形貌显示，与棕榈仁壳颗粒相比，PWS /树脂复合材料施加的15.7 N / mm2的压缩力对晶粒的变形影响较小，并且还显示PWS晶粒通过树脂键紧密堆积在一起。用于砂纸生产的浓度为长春花壳颗粒相对于树脂的12重量％的87重量％。将获得的物理和机械性能与石榴石砂纸进行比较，发现其接近可接受的标准。
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