CN103540460A - Water-based printed circuit board (PCB) cleaning agent and preparation method thereof - Google Patents

Abstract

The invention provides a water-based printed circuit board (PCB) cleaning agent. The cleaning agent is prepared from the following raw materials in parts by weight: 2-3 parts of sodium borate, 1-2 parts of potassium pyrophosphate, 3-4 parts of coconut oil alkylolamide phosphate, 4-5 parts of fatty alcohol-polyoxyethylene ether, 2-3 parts of citric acid, 30-40 parts of ethanol, 4-5 parts of auxiliary and 100-120 parts of deionized water. The cleaning agent has the beneficial effects that the cleaning agent has the capability of quickly removing rosin, soldering tin, metal ions, fingerprints and the like, can not cause short circuits easily, is less in loss, ensures better printing quality, reduces the cost and saves time, thus greatly reducing the rejection rate and manufacturing more PCBs with better quality more quickly; the auxiliary can form a protective film on the surface of the circuit board to isolate air to prevent water and other molecules in the air from corroding the circuit board; the cleaning agent is resistant to oxidation and is convenient for operation of the next preparation process.

Description

A kind of water base PCB circuit card clean-out system and preparation method thereof

Technical field

The present invention relates to clean-out system field, relate in particular to a kind of water base PCB circuit card clean-out system and preparation method thereof.

Background technology

Along with the high speed development of unicircuit, the volume of circuit card is more and more less, and electronic component is more and more less, and density is increasing.If the dirt dust of the inside does not clean up in making processes, likely can cause the problems such as short circuit, corrosion, affect the normal operation of circuit card.At present majority circuit plate sanitising agent is all made with organism, and cleaning effect is good, is difficult for causing the problems such as short circuit, corrosion, and still, organic compound not only cost is high, and contaminate environment, damage the ozone layer, harmful to HUMAN HEALTH.Also have minority waterborne cleaning agent, but cleaning performance is limited, has security risk, require further improvement formula, technique, to reach clean thorough, pollution-free, the object of corroding little, healthy, circuit safety, reducing costs.

Summary of the invention

The object of the present invention is to provide a kind of water base PCB circuit card clean-out system and preparation method thereof, this clean-out system have advantages of clean thoroughly, cleaning speed is fast.

Technical scheme of the present invention is as follows:

A PCB circuit card clean-out system, is characterized in that being made by the raw material of following weight part: Sodium Tetraborate 2-3, potassium pyrophosphate 1-2, Oleum Cocois alkylol amide phosphoric acid ester 3-4, polyoxyethylenated alcohol sodium sulfate 4-5, citric acid 2-3, ethanol 30-40, auxiliary agent 4-5, deionized water 100-120;

Described auxiliary agent is made by the raw material of following weight part: Silane coupling reagent KH-570 2-3, phytic acid 1-2, methyl methacrylate 3-4, oxidation inhibitor 1035 1-2,2-aminoethyl 17 alkenyl imidazoline 1-2, ethanol 15-18; Preparation method mixes Silane coupling reagent KH-570, phytic acid, ethanol, is heated to 60-70 ℃, stirs after 20-30 minute, then adds other remaining component, is warming up to 80-85 ℃, stirs 30-40 minute, obtains.

The preparation method of described water base PCB circuit card clean-out system, it is characterized in that comprising the following steps: deionized water, Sodium Tetraborate, potassium pyrophosphate, Oleum Cocois alkylol amide phosphoric acid ester, polyoxyethylenated alcohol sodium sulfate, citric acid, ethanol are mixed, under 1000-1200 rev/min of stirring, speed with 6-8 ℃/minute is heated to 60-70 ℃, add other remaining components, continue to stir 15-20 minute, obtain.

Beneficial effect of the present invention

Clean-out system of the present invention has to rosin, scolding tin, metal ion, fingerprint etc. the ability of removing fast, is difficult for causing short circuit; Still less, printing quality is better, reduce costs in loss, thereby save time, reduces greatly scrap rate, and produce faster more, the printed circuit board (PCB) of better quality.Auxiliary agent of the present invention can form protective membrane at circuit board surface, and isolated air, prevents water and other molecule open circuit potential plates in atmosphere, anti-oxidant, facilitates next step manufacture craft to carry out.

Embodiment

A PCB circuit card clean-out system, by following weight part (kilogram) raw material make: Sodium Tetraborate 2.5, potassium pyrophosphate 2, Oleum Cocois alkylol amide phosphoric acid ester 3.5, polyoxyethylenated alcohol sodium sulfate 5, citric acid 3, ethanol 36, auxiliary agent 4.4, deionized water 110;

Described auxiliary agent by following weight part (kilogram) raw material make: Silane coupling reagent KH-570 2.5, phytic acid 1.5, methyl methacrylate 3.5, oxidation inhibitor 1,035 1.5,2-aminoethyl 17 alkenyl imidazolines 1.5, ethanol 16; Preparation method mixes Silane coupling reagent KH-570, phytic acid, ethanol, is heated to 65 ℃, stirs after 25 minutes, then adds other remaining component, is warming up to 83 ℃, stirs 35 minutes, obtains.

The preparation method of described water base PCB circuit card clean-out system, comprise the following steps: deionized water, Sodium Tetraborate, potassium pyrophosphate, Oleum Cocois alkylol amide phosphoric acid ester, polyoxyethylenated alcohol sodium sulfate, citric acid, ethanol are mixed, under 1100 revs/min of stirrings, with the speed of 7 ℃/minute, be heated to 65 ℃, add other remaining components, continue to stir 18 minutes, obtain.

This water base PCB circuit card clean-out system is used for cleaning copper printed circuit board (PCB), through 10 times of amplification detection of Olympus microscope, surface is clean without pollutents such as obvious rosin, scolding tin, greasy dirt, fingerprints, and cleaning solution resistivity is greater than 2*106 Ω .cm, First Pass Yield reaches 82%, is better than normal level.

Claims (2)

1. a water base PCB circuit card clean-out system, is characterized in that being made by the raw material of following weight part: Sodium Tetraborate 2-3, potassium pyrophosphate 1-2, Oleum Cocois alkylol amide phosphoric acid ester 3-4, polyoxyethylenated alcohol sodium sulfate 4-5, citric acid 2-3, ethanol 30-40, auxiliary agent 4-5, deionized water 100-120;

Described auxiliary agent is made by the raw material of following weight part: Silane coupling reagent KH-570 2-3, phytic acid 1-2, methyl methacrylate 3-4, oxidation inhibitor 1035 1-2,2-aminoethyl 17 alkenyl imidazoline 1-2, ethanol 15-18; Preparation method mixes Silane coupling reagent KH-570, phytic acid, ethanol, is heated to 60-70 ℃, stirs after 20-30 minute, then adds other remaining component, is warming up to 80-85 ℃, stirs 30-40 minute, obtains.

2. the preparation method of water base PCB circuit card clean-out system according to claim 1, it is characterized in that comprising the following steps: deionized water, Sodium Tetraborate, potassium pyrophosphate, Oleum Cocois alkylol amide phosphoric acid ester, polyoxyethylenated alcohol sodium sulfate, citric acid, ethanol are mixed, under 1000-1200 rev/min of stirring, speed with 6-8 ℃/minute is heated to 60-70 ℃, add other remaining components, continue to stir 15-20 minute, obtain.