Organic‐inorganic hybrid nanocomposites can be used as polymer coatings in order to improve their scratch resistance. These nanocomposites consist of a polymer matrix that provides flexibility and lightweight, and inorganic nanoparticles that are responsible for high thermal stability and improving scratch resistance. In this study, the polymer matrix, methyl methacrylate‐butyl acrylate (MMA‐BA) copolymer, was synthesized by conventional emulsion polymerization. To get the highest conversion percentage of the copolymer, various parameters, including reaction temperature, weight ratio of monomers, mechanical stirrer speed, type and amount of initiator, total amounts, and weight ratio of emulsifiers were investigated. For the synthesis of nanocomposites, nanoparticles of titanium dioxide, iron oxide, silver sulfide, and modified and unmodified nanosilica were added to the copolymer with the highest conversion percentage. According to the data, the best conditions for the synthesis of a copolymer with the highest conversion percentage were as follows: weight ratio of MMA:BA = 60:40 with a total amount of 10 g monomers, mechanical stirrer speed of 250 rpm, thermal initiator water‐soluble ammonium persulfate with amount of 0.12 g, emulsifiers such as sodium dodecyl sulfate and Triton X‐100 with a weight ratio of 1:3 and a total value of 1 g, and the reaction temperature of 80°C. According to the results of thermal gravimetric analysis, the samples with the highest thermal stability were selected for nanoscratch test. Nanoscratch test results suggested that Ag₂S nanocomposite including 0.03 g AgNO₃ and 0.0072 g thiourea had the highest scratch resistance with the lowest coefficient friction (0.48) and the lowest coefficient scratch (0.113 μN^–1/2). Chemical structures of synthesized compounds were confirmed by Fourier transform infrared spectroscopy. The morphology of synthesized Ag₂S nanocomposite was investigated by scanning electron microscopy and energy dispersive X‐ray spectroscopy analyses.

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基于丙烯酸酯单体的有机-无机杂化纳米复合材料的合成及其耐刮擦性的研究

有机-无机杂化纳米复合材料可用作聚合物涂层，以提高其耐刮擦性。这些纳米复合材料由提供柔韧性和轻质性的聚合物基质以及负责高热稳定性和改善耐刮擦性的无机纳米颗粒组成。在这项研究中，通过常规乳液聚合合成了聚合物基体，即甲基丙烯酸甲酯-丙烯酸丁酯（MMA-BA）共聚物。为了获得最高的共聚物转化率，研究了各种参数，包括反应温度，单体的重量比，机械搅拌器速度，引发剂的类型和用量，总量和乳化剂的重量比。用于合成纳米复合材料，包括二氧化钛，氧化铁，硫化银，将改性的和未改性的纳米二氧化硅以最高的转化率添加到共聚物中。根据数据，合成具有最高转化率的共聚物的最佳条件如下：MMA：BA的重量比= 60:40，单体总量为10 g，机械搅拌器速度为250 rpm，热引发剂的水溶性过硫酸铵含量为0.12 g，乳化剂如十二烷基硫酸钠和Triton X-100的重量比为1：3，总值为1 g，反应温度为80°C。根据热重分析的结果，选择具有最高热稳定性的样品进行纳米划痕试验。纳米划痕测试结果表明，Ag 合成具有最高转化率的共聚物的最佳条件如下：MMA：BA = 60:40的重量比，单体总量为10 g，机械搅拌器速度为250 rpm，热引发剂水溶性铵过硫酸盐的量为0.12 g，乳化剂如十二烷基硫酸钠和Triton X-100的重量比为1：3，总值为1 g，反应温度为80°C。根据热重分析的结果，选择具有最高热稳定性的样品进行纳米划痕试验。纳米划痕测试结果表明，Ag 合成具有最高转化率的共聚物的最佳条件如下：MMA：BA = 60:40的重量比，单体总量为10 g，机械搅拌器速度为250 rpm，热引发剂水溶性铵过硫酸盐的量为0.12 g，乳化剂如十二烷基硫酸钠和Triton X-100的重量比为1：3，总值为1 g，反应温度为80°C。根据热重分析的结果，选择具有最高热稳定性的样品进行纳米划痕试验。纳米划痕测试结果表明，Ag 热引发剂的水溶性过硫酸铵含量为0.12 g，乳化剂如十二烷基硫酸钠和Triton X-100的重量比为1：3，总值为1 g，反应温度为80°C。根据热重分析的结果，选择具有最高热稳定性的样品进行纳米划痕试验。纳米划痕测试结果表明，Ag 热引发剂的水溶性过硫酸铵含量为0.12 g，乳化剂如十二烷基硫酸钠和Triton X-100的重量比为1：3，总值为1 g，反应温度为80°C。根据热重分析的结果，选择具有最高热稳定性的样品进行纳米划痕试验。纳米划痕测试结果表明，Ag包含0.03 g AgNO ₃和0.0072 g硫脲的₂ S纳米复合材料具有最高的抗划伤性，摩擦系数最低（0.48），系数划伤系数最低（0.113μN–1 ^/2）。合成化合物的化学结构通过傅立叶变换红外光谱法确认。合成的Ag ₂ S纳米复合材料的形态通过扫描电子显微镜和能量色散X射线光谱分析进行了研究。