高校化学工程学报2017，Vol.31Issue(1)：156-160,5.DOI:10.3969/j.issn.1003-9015.2017.01.022
药芯焊锡丝飞溅性能的改进和预测
Improvement and Prediction of Spattering Properties of Flux-Cored Solder Wire
程江 1李成武 1韩华2
作者信息
- 1. 华南理工大学化学与化工学院,广东广州 510641
- 2. 广州汉源新材料有限公司,广东广州 510663
- 折叠
摘要
Abstract
A new apparatus was designed to measure vapor pressure of flux during thermal decomposition. It can simulate flux variation under soldering temperature in an enclosed space, and the effects of rosins and organic acids on flux vapor pressure were investigated. Spreading test was applied to study soldering activity and flux residues when using different rosins. The results show that the modified rosin can result in lower flux vapor pressure than that of normal rosins, and the hydrogenated rosin glycerin ester is the most effective one with final pressure of 16 kPa. For fluxes cosisting of three different organic acids, the formulation with suberic acid (high boiling point) exhibits the lowest vapor pressure of 17 kPa. Spreading test demonstrates that fluxes with esterified rosin have less residues and same soldering activity as those of hydrogenated rosin. Three fluxes with different vapor pressure were prepared and filled into solder wire for spattering rate tests. The result suggests that the spattering rate decreases when the flux vapor pressure becomes lower, and deforming agents have strong effects on reducing spattering rate. The vapor pressure of the three fluxes is 34, 27 and 26 kPa respectively, and the coresponding spattering rates are 0.67%,0.32% and 0.30%, respectively.关键词
助焊剂/蒸汽压/飞溅率/松香/扩展率Key words
flux/vapor pressure/spattering rate/rosin/spreading rate分类
能源科技引用本文复制引用
程江,李成武,韩华..药芯焊锡丝飞溅性能的改进和预测[J].高校化学工程学报,2017,31(1):156-160,5.
