本文選題：銀粉　切入點(diǎn)：化學(xué)還原法　出處：《長(zhǎng)安大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：銀粉是電子工業(yè)和電氣的重要材料之一,也是電子工業(yè)中應(yīng)用最廣泛的一種貴金屬材料,是介質(zhì)、電阻、厚膜、陶瓷等電子漿料的最基本功能材料。最近幾年,納米材料和納米微粒已經(jīng)成為材料科學(xué)領(lǐng)域的重點(diǎn)研究?jī)?nèi)容。其制備方法繁多,但主要采用化學(xué)還原法制備。此論文參照文獻(xiàn)資料,通過(guò)還原劑甘油、水合肼,還原制備微米級(jí)可控小試及中試研究。研究中通過(guò)小試階段,借助激光粒度分析,系統(tǒng)考察了工藝參數(shù)對(duì)銀粉形貌與粒度的影響;通過(guò)中試階段,設(shè)計(jì)出一套適合大規(guī)模生產(chǎn)、操作簡(jiǎn)捷、尾氣吸收良好的生產(chǎn)設(shè)備。綜合比較小試間段與中試間段實(shí)驗(yàn)參數(shù)對(duì)銀粉粒徑的影響,優(yōu)化生產(chǎn)工藝,能夠穩(wěn)定生產(chǎn)出大批量的、粒徑分布均勻的、可控制的微米級(jí)銀粉。綜合本次實(shí)驗(yàn)的所得數(shù)據(jù),我們優(yōu)化出一種最佳條件下大規(guī)模生產(chǎn)微米銀粉的參數(shù):取1000g標(biāo)銀加入1.5L濃硝酸制作硝酸銀溶液。取150g聚乙烯醇、250m L三乙醇胺、1500m L丙三醇、1000g Na OH,Na OH溶液的濃度為0.11g/L。調(diào)節(jié)蠕動(dòng)泵轉(zhuǎn)速為20轉(zhuǎn)/分,電子攪拌器速率為180轉(zhuǎn)/分。按照實(shí)驗(yàn)步驟進(jìn)行反應(yīng),可得到粒徑累積分布D100.4μm、D901.8μm,也就是絕大部分粒徑分布在0.4~1.8μm之間的微米級(jí)銀粉。
[Abstract]:Silver powder is one of the most important materials in electronic industry and electrical industry, and it is also one of the most widely used precious metal materials in electronic industry. It is the most basic functional material of electronic paste such as dielectric, resistance, thick film, ceramics and so on. Nanomaterials and nanoparticles have become the focus of research in the field of material science. There are many methods for their preparation, but they are mainly prepared by chemical reduction. The effect of technological parameters on the morphology and particle size of silver powder was systematically investigated by means of laser particle size analysis, and a set of suitable for large-scale production was designed. A production equipment with simple operation and good tail gas absorption. The effects of experimental parameters on the particle size of silver powder in the small and medium test sections are compared synthetically, and the production process can be optimized to produce large quantities of silver powder with uniform particle size distribution. Controlled micron silver powder. Synthesizing the data from this experiment, We have optimized the parameters of large-scale production of micron silver powder under the optimum conditions: adding 1000g standard silver into 1.5L concentrated nitric acid to produce silver nitrate solution. The concentration of 150g polyvinyl alcohol 250m L triethanolamine 1,500g triethanolamine 1,500g NaOH solution is as follows. 0.11g / L. adjusting the speed of the peristaltic pump to 20 rpm, The rate of electron agitator is 180 cycles / min. According to the experimental steps, the cumulative particle size distribution D100.4 渭 m D901.8 渭 m, that is, the majority of micrometer silver powder with particle size distribution between 0.4 渭 m and 1.8 渭 m, can be obtained.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB383.3;TG146.32

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本文編號(hào)：1595204