马来海松酸聚乙二醇酯的制备及助焊性能

发布时间：2018-01-19 00:17

本文关键词： 马来海松酸聚乙二醇助焊剂 Sn.Cu钎料　出处：《焊接学报》2015年12期 　论文类型：期刊论文

【摘要】：以马来海松酸酐及聚乙二醇200为原料,Zn O为催化剂,制备得到4种不同酸值的马来海松酸聚乙二醇酯,通过傅里叶红外光谱(FT-IR)对产物的结构进行表征,并考察其对Sn0.7Cu无铅钎料的助焊性能.结果表明,当马来海松酸酐与聚乙二醇的摩尔量之比为1∶0.5,1∶1.0,1∶1.5及1∶2.0时,反应体系的酸值分别在3,4,7和10h后达到稳定,得到的马来海松酸聚乙二醇酯的酸值分别为212.5,178,125.3,72.7 mg/g;酸值为178 mg/g的马来海松酸聚乙二醇酯对Sn0.7Cu钎料的助焊效果最佳,其在铜基板上形成的焊点饱满,表面光亮,扩展率达到75.8%,优于未经改性的天然松香.
[Abstract]:Four kinds of poly (ethylene glycol) maleimaric acid esters with different acid values were prepared by using maleimaric anhydride and polyethylene glycol 200 as raw materials. The structure of the product was characterized by Fourier transform infrared spectroscopy (FTIR), and the weldability of the product to Sn0.7Cu lead-free solder was investigated. When the molar ratio of Maleophoric anhydride to polyethylene glycol is 1: 0.5 and 1: 1.0: 1: 1.5 and 1: 2.0, the acid value of the reaction system is stable after 3 ~ 4 ~ 7 h and 10 h, respectively. The acid value of polyethylene glycol Maleopimaric acid was 212.5N 178125.3N 72.7 mg / g, respectively. Poly (ethylene glycol) Maleopimaric acid with an acid value of 178 mg/g had the best effect on the soldering of Sn0.7Cu solder. The solder joints formed on the copper substrate were full, the surface was bright, and the expansion rate reached 75.8%. It is superior to the unmodified natural rosin.
【作者单位】：中国林业科学研究院林产化学工业研究所生物质化学利用国家工程实验室;中国林业科学研究院林业新技术研究所;
【基金】：林业公益性行业科研专项资助项目(201304602)
【分类号】：TG425;TQ317
【正文快照】： 0序言目前已开发出的无铅钎料中,Sn0.7Cu钎料是成本最低的钎料之一,其表面张力、电阻率和密度都和Sn Ag系钎料相似,且伸长率和蠕变寿命高于Sn Pb钎料,但润湿性能要低于Sn Ag系钎料及Sn Pb钎料[1,2].为了改善Sn0.7Cu钎料的使用性能,国内外相关科研工作者在Sn0.7Cu钎料合金的改

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