Water-based cleaning agent for fingerprint identification module circuit board and application thereof

Abstract

The invention provides a water-based cleaning agent for a fingerprint identification module circuit board and application thereof. The cleaning agent is prepared from, by mass, 20-40% of a polyol ether compound, 10-30% of an alcohol amine compound, 2-6% of a chelating agent, 1-3% of a nonionic surfactant, 0.3-2% of a bactericide and the balance water. The cleaning agent can clean away scaling powder on the fingerprint identification module circuit board under the combined action of the above components, and has little harm to the human body and the environment; the properties are stable, no delamination occurs; volatilization is not easy, and decomposition is not easy; the materials have broad sources, are cheap and easy to obtain, and the use cost is low; biodegradation can be achieved, the waste liquid treatment cost is low, no toxic substances such as sulfur, chlorine, benzene and heavy metals are contained; no corrosion to fingerprint identification chips and circuit boards exists;the components are simple, and the operative difficulty of actual production and quality inspection is greatly reduced.

Description

technical field [0001] The invention belongs to the field of flux residue cleaning agents, in particular to a water-based cleaning agent for fingerprint recognition module circuit boards and an application thereof. Background technique [0002] For the fingerprint module, the fingerprint identification chip and the circuit board are connected by solder during the production process, and there will be flux residues between the joints, which may cause a short circuit on the circuit board during use, so it needs to be cleaned. Because the difficulty of cleaning the fingerprint identification module is that the gap between the circuit board and the chip is very small, and the cleaning cleanliness is required to be high. [0003] At present, fluorocarbon solvents and halogenated hydrocarbon solvents are mostly used for cleaning fluxes. These solvents contain carcinogenic substances, which are harmful to human body, high in use cost, and high in waste liquid treatment cost. Cont...

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