珠海市劲威科技有限公司
MST-7铁系磷化剂
- 产品详情
产品简介
本品为常温高效铁系磷化成膜剂。特点是沉渣少甚至几乎无渣；磷化后在金属表面形成一层均匀致密的蓝彩 金黄色的保护膜；膜与涂层的附着力好，耐蚀性强，特别是涂装后，与涂层的柔韧性极佳。适用于黑色金属表面涂装前处理。
物化指标
使用指南：
1.工艺流程：除油-水洗-除锈-水洗-磷化-水洗-干燥
2.使用方法：
3.槽液管理：
a.MST-7添加每次以1~1.5%为宜，一般情况下每添加1%原液，游离酸上升0.2点左右，总酸上升1.5点左右。
b.当槽液比重少于1.02g/cm3和PH值大于3.5时，需补加MST-7；PH值小于2时，应用3~5%的纯碱溶液进行中和，控制PH值在2.5~3.0为宜。
c.游离酸的侧定：用移液管取10ml工作液注入250ml锥形瓶中，加蒸馏水50ml，滴加3~5滴溴酚兰指示剂，用0.1NNaoH标准溶液滴定，滴定至由黄绿色变成浅兰紫色为终点，所耗用0.1NNaoH标准溶液的毫升数即为游离酸的点数。
d.总酸的测定：用移液管取10ml工作液注入250ml的锥形瓶中，加蒸馏水50ml，再加3~5滴酚酞指示剂，摇匀，然后用0.1NNaoH标准溶液滴至稳定的淡红色（静置30秒红色不消失）为终点，所耗用的标准溶液的毫升数即为总酸点数。
{"serList":[{"icon":"iconfront front-shouye","status":"1","isSys":"1","title":"首页","url":"index.html","type":"index"},{"icon":"iconfront front-pinglun","status":"1","isSys":"1","title":"留言","url":"msg.html","type":"msg"},{"icon":"iconfront front-didianmianxing","status":"1","isSys":"1","title":"地图","url":"map.html","type":"map"},{"icon":"iconfront front-weibiaoti-","status":"1","isSys":"1","title":"电话","phone":"07563610718","type":"tel","color":""},{"icon":"iconfront front-duanxin","status":"0","isSys":"1","title":"短信","phone":"13800138000","type":"sms"},{"icon":"layui-icon layui-icon-share","status":"0","isSys":"1","title":"分享","shareList":["weixin","weibo","qq","qqZone","douban","tieba","copy"],"type":"share"}],"hasEdit":true}