Polymer composites based on unsaturated polyester resin (UPR) and reinforced with particles based on unmodified/modified plant provenance biosilica particles were synthesized and characterized. An unsaturated polyester resin was obtained from waste poly (ethylene terephthalate (PET). Biosilaca particles are made from rice husk biomass. The surface of the produced silica particles was modified using three different silanes: 3-trimethoxysilylpropyl methacrylate (MEMO), trimethoxyvinylsilane (TMEVS), and 3-aminopropyltrimethoxysilane (APTMS). The microhardness test method was used to investigate the mechanical properties of synthesized composite material with variations in dwell times and applied loads. Optimization of composite microhardness value prediction in function of synthesized parameters (type of modification of silica particles) and measurement parameters (applied loads and dwell times) was done using the method of response surface methodology (RSM) regression analysis. The maximal microhardness values (0.459 GPa) were obtained of type modification of silica particles with vinyl with 80% confidence for 120 experimental variables. This method can be used to choose the optimal dwell time and load for comparison of measurements between different composite materials and to enable the choice of the material in terms of optimization of the quality of reinforcement and quality of interphase determined by surface modification.

中文翻译：

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使用响应面法优化绿色衍生二氧化硅/聚酯复合材料的显微硬度测量

合成并表征了基于不饱和聚酯树脂（UPR）并用基于未改性/改性植物源生物二氧化硅颗粒的颗粒增强的聚合物复合材料。从废弃的聚对苯二甲酸乙二醇酯 (PET) 中获得不饱和聚酯树脂。Biosilaca 颗粒由稻壳生物质制成。所生产的二氧化硅颗粒的表面使用三种不同的硅烷进行改性：甲基丙烯酸 3-三甲氧基甲硅烷基丙酯 (MEMO)、三甲氧基乙烯基硅烷 (TMEVS) ）和 3-氨基丙基三甲氧基硅烷（APTMS）。显微硬度测试方法用于研究合成复合材料的机械性能随停留时间和施加载荷的变化。根据合成参数（改性类型）优化复合材料显微硬度值预测使用响应面法 (RSM) 回归分析方法完成测量参数（施加的载荷和停留时间）。最大显微硬度值 (0.459 GPa) 是通过乙烯基改性二氧化硅颗粒获得的，置信度为 80% 120个实验变量。该方法可用于选择最佳停留时间和负载，以比较不同复合材料之间的测量结果，并根据表面确定的增强材料质量和界面质量来选择材料修改。