一、产品简介
I Product Introduction
目前广泛使用于PCB显影制程的碳酸钠（纯碱），因为含有大约2%之杂质，容易造成槽体与管路喷嘴阻塞，亦可能残留板面衍生显影不洁等许多复杂问题。
Sodium carbonate (Soda) is widely applied in PCB developing process at present, but due to it contains about 2% foreign matters, it is easy to block the bath and pipeline nozzle and may remain on plate to cause problems such as unclean developing.
DP-666系针对干膜与绿漆之显影而研发，使用高纯度之无杂质碳酸钾，同时其特殊之添加剂，更能加快显影速度，防止硬水水垢产生，并使槽液寿命延长达碳酸钠之3-5倍，有效减少废水量。
DP-666 series is designed for dry film and green paint development. It uses high purified potassium carbonate without foreign matters and special additive, which can speed up developing velocity and avoid hard water scale, and can prolong the use life of bath solution to be 3-5 times than that of sodium carbonate and effectively reduce waste water.

配槽方法
II Makeup Method
2.1显影主槽
2.1 Main Developing Bath

2.2 显影添加槽
2.2 Developing Adding Bath

1L添加槽 1L Adding Bath	主要作用 Main Function	体积（ml）
纯水 Pure Water	溶剂 Solvent	960ml
DP-666B	自动添加 Automatic adding	40ml

三、操作条件
III Operating Conditions

组份/参数 Component/Parameter	最佳值/工作范围/要求 Optimal value/Work Scope/Requirement
制 程 Process	防焊绿油 Solder mask	外层线路 External Line
温 度 Temperature	30±2℃	28±2℃
浓 度 Concentration	8-14g/L	8-14g/L
PH 值 PH Value	10.8-11.4	10.6-11.0
显影点 Break Point	30%-40%	1/2-1/3
处理能力 Processing Capacity	200-450ft2/L	80-150ft2/L
换槽时机 Time for Changing Bath	间断作板1-2周、连续作板3-4万(ft2) Intermittent working for 1-2 circles, and continuous working for 30,000-40,000(ft2)
清槽时机 Cleaning Time	间断作板1-2周、连续作板3-4万(ft2) Intermittent working for 1-2 circles, and continuous working for 30,000-40,000(ft2)

四、分析方法
IV Analysis Method
方 法：1、取5mlsample至250ml锥形瓶中，加入纯水50ml；
Method: 1. take 5ml sample into a 250ml conical flask, and add 50ml pure water;
2、加入甲基橙指示剂5-10滴；
2. Add 5-10 drops of methyl orange indicator;
3、用0.1N HCL滴定，颜色由橙黄色变为红色，30秒内不褪色即为滴定终点。
3. Use 0.1N HCL for titration, the color changes from orange to red, and if the color does not fade within 30s, it reaches the end point of titration.
计 算 ：碳酸根浓度(g/L)=mls×1.382
Calculation: the concentration of carbonate (g/L) = mls×1.382

五、产品性质
V Product Nature

品 名 Product Name	DP-666A	DP-666B
外 观 Appearance	无色至淡黄色透明液体 Colorless to light yellow transparent liquid	无色至淡黄色透明液体 Colorless to light yellow transparent liquid
比 重 Specific Gravity	1.10-1.20	1.20-1.30
PH 值 PH Value	大于11 >11	大于12 >12
闪火点 Flash Point	不可燃 Non- combustible	不可燃 Non- combustible

六、安全防护
VI Safety Protection
DP-666系微碱性液体，避免眼睛皮肤及衣物直接接触，如不慎触及应以大量清水冲洗患部，必要时立刻送医。
DP-666 is weak alkaline liquid, and shall not directly contact with eyes, skin and clothes; in case of contact, immediately flush with plenty of water and get medical treatment if necessary.

七、问题与改善
VII Problems and Improvement

问 题 Problems	改 善 对 策 Improvement Policy
显影不完全 Incomplete Development	1、 检查显影点是否过长？ 1. check if the break point is too long 2、分析确认碳酸根浓度是否在控制范围？ 2. analyze to confirm if the concentration of carbonate is within control scope 3、 确认温度是否在操作条件？ 3. confirm if the temperature is under operating condition 4、 检查喷嘴是否阻塞？ 4. check if the nozzle is blocked 5、 校正pH计。 5. calibrate pH meter
显影过度 Over-development	1、检查显影是否过短？ 1. check if developing is too short 2、分析确认碳酸根浓度不可超过14g/L? 2. analyze to confirm the concentration of carbonate be not exceed 14g/L 3、确认温度没有超过控制范围？ 3. confirm the temperature not exceed control scope 4、校正pH计。 4. calibrate pH meter

八、综 合 比 较
VIII Comprehensive Comparison

项目 Item	DP-666A/B	Na2CO3	备注 Remark
控制添加方式 Control adding method	以pH精准控制 Use pH to control precisely	板数 Plate number
显影点 Break point	固定60-62% Fixed 60-62%	变动48-60% Altered 48-60%
配 槽 Developing bath	浓缩液体 Concentrated liquid	粉末 Powder
主槽配槽频率 Makeup Frequency of Main Bath	4次/月 Four times/month	90次/月 90 times/month
添加槽配槽频率 Makeup Frequency of Adding Bath	45次/月 45times/month	180次/月 180times/month
Dump槽频率 Dump bath frequency	4次/月 4 times/month	90次/月 90times/month
清槽频率 Bath cleaning frequency	4次/月 4times/month	4次/月 4times/month
停线管理 Shut down management	每月8-16小时 8-16h/month	每月60-120小时 60-120h/month
槽液管理 Bath solution management	每周校正一次， 方便管理 Calibrate once per week for convenience of management	因配槽当槽次数多， 变数大 As too many times of bath failure, and many variables
粘稠悬浮物 及硬水污垢 Viscous suspension and hard water scale	没有 N/A	许多 Many
显影不良率 Defective rate of developing	干膜1.5%以下 Dry film, below 1.5% 湿膜0.2%以下 Wet film below 0.2% 内印0.1%以下 Inner print, below 0.1%	?%
软 水 Soft water	减少70-80% Reduce 70-80%
废液量 Waste liquid amount	减少70-80% Reduce 70-80%
产 量 Output	增加20% （配槽、当槽频率低） Increase 20% (low frequency of bath Makeup and failure)
药液成本 Solution cost	约0.12元/sf （含消泡剂） About RMB0.12/sf (include defoamer)	约0.22元/sf （含消泡剂） About RMB0.22/sf (include defoamer)