不同脂松香对Sn0.7Cu无铅焊料的助焊性能研究.pdf

第27卷第6期
化学研究与应用
Vol 27. No6
2015年6月
Chemical Research and Application
une,2015
文章编号:1004-1656(2015)06-0934-06
不同脂松香对Sn0.7Cu无铅焊料的助焊性能硏究
齐帆,商士斌2*,高宏,黄旭娟
(1.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;
国家林业局林产化学工程重点开放性实验室;江苏省生物质能源与材料重点实验室,江苏南京210042;
2.中国林业科学研究院林业新技术研究所,北京100091)
摘要;分别以马尾松松香、湿地松松香和思茅松松香为主要活性成分配制液体助焊剂,采用扩展率试验法研究
3种脂松香对Sn0.7Cu焊料在铜基板上润湿性能的影响,测试了助焊剂的物理性能,并分析了扩展率≥75%
时的焊点形貌。结果表明:在含量为5%-55%时,随着含量的递增,马尾松松香、湿地松松香及思芓松松香
对Sn0.7Cu焊料的扩展率均呈逐渐递增的趋势,并且在相同含量条件下,马尾松松香和思茅松松香的扩展率
高于湿地松松香;当含量≥25%时3种松香的扩展率均高于70%,达到S/T11389-2009中L级无卤素松香
基助焊剂要求,并且各松香助焊剂物理稳定性和干燥度合格,铜板腐蚀性较低,焊后表面绝缘电阻不低于1.0
10°92;当马尾松松香和思茅松松香在含量为45%~-55%、湿地松松香在含量为55%时扩展率≥75%,达到
SI/T11389-2009中M级无卤素松香基助焊剂要求,其中马尾松松香扩展率高于湿地松松香,并且焊点饱
满,表面光亮,成形性优于思茅松松香,因此更适合用作Sn0.7Cu焊料用中等活性助焊剂。
关键词:脂松香;助焊剂;S0.7Cu焊料
中图分类号:0614.412文献标志码:A
Research of different cultivar rosins on welding performance of
Sn0. 7 Cu lead-free solder
QI Fan, SHANG Shi-bin,, GAO Hong, HUANG Xu-juan
(1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization
Key and Open Lab. of Forest Chemica! Engineering, SFA; Key Lab. of Biomass Energy and Material
Jiangsu Province, Nanjing 210042, China
2. Institute of New Technology of Forestry, CAF, Beijing 100091, China
Abstract: The welding performance of masson pine rosin, slash pine rosin and Simao pine rosin to Sno. 7cu lead-free solder
r were
tested conform to the electronic area standard S/T 11389-2009 with content of 5% -S5%, including spreading ratio, physical per-
formance and macroscopically appearance of welding spot. The results showed that spreading ratio of Sno. 7cu solder on the cooper
plate were increasing gradually along with the increase of rosins content, and masson pine rosin and Simao pine rosin showed better
help wetting ability than slash pine rosin at the same contents. All the spreading ratios were higher than 70% when the rosins conte
were no less than 25%, which matched the request of L level halogen-free rosin based flux of S]/T 11389-2009, and the physical
stability, dryness, copper plate corrosion texts and sur ace insulation resistance(SIR)of tese rosins based fluxes were all meeting
the standard above in that condition. When the content of masson pine rosin or Simao pine rosin was between 45%to 55%, slash
收稿日期:2014-10-09;修回日期:201502-12
甚金项目:国家林业局公益性行业科研专项(201304602)资助
联系人简介:商土斌(1964-),男,研究员,博士生导师,主要从事生物质资源的化学研究与利用。E-mal:shangsb@hotmail.com