Liquid Moisture Absorbent Preventing Oil Bleeding
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Solution Overview
Problem
Conventional liquid desiccants experience oil bleeding issues when applied to electronic devices, leading to poor appearance and quality problems.
Innovation Solution
A liquid moisture absorbent composition featuring a two-liquid component type silicone binder and moisture absorbable particles like calcium or strontium oxide, with controlled viscosity and specific surface areas, applied in an inert gas atmosphere to inhibit oil bleeding and ensure uniform coating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional liquid desiccant is applied to an electronic device, then moisture absorbing properties are obtained, but oil bleeding occurs into the device causing poor appearance and quality problems
Solution Approach 1:
The patent changes the chemical composition parameters of the liquid desiccant by incorporating specific additives (silicone oil, resin, or rubber) and controlling the ratio of moisture absorbable particles to binder. This parameter modification prevents oil bleeding while maintaining moisture absorption effectiveness, resolving the contradiction between reliability and harmful effects.
Solution Approach 2:
The patent creates a composite liquid desiccant system by combining moisture absorbable particles with a binder system that includes silicone oil, resin, or rubber. This composite structure prevents oil bleeding by forming a stable emulsion or suspension that maintains phase separation, thereby eliminating the harmful oil bleeding effect while preserving moisture absorption capability.
2Object-generated harmful factors
If a powder or sheet moisture absorbable material is used, then oil bleeding is prevented, but application flexibility and ease of coating are reduced
Solution Approach 1:
The patent modifies the physical state parameter of the moisture absorbent from solid (powder/sheet) to liquid form while controlling composition parameters to prevent oil bleeding. The liquid formulation with specific viscosity and composition ratios enables flexible application to various surfaces while maintaining the benefit of no oil bleeding.
3Ease of operation
If the viscosity of the liquid moisture absorbent is reduced for easier application, then coating uniformity deteriorates and oil bleeding increases
Solution Approach 1:
The patent optimizes the viscosity parameter to a specific range (10-300 Pas at 20°C) that balances application ease with coating uniformity. This controlled viscosity parameter, combined with composition parameters including particle size distribution and binder type, prevents both oil bleeding and coating defects, resolving the contradiction between operational ease and manufacturing precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents oil bleeding and ensures a uniform coating film, maintaining the advantages of a liquid form while addressing the limitations of powder or sheet-based absorbents.
Implementation Method 1
a moisture absorbable material may be arranged in the housing so that even when an extremely small amount of damp enters or is generated in the housing, the damp is removed therefrom
Implementation Method 2
a liquid desiccant including moisture absorbable particles dispersed in a binder resin has been proposed
Data Source
AI summary
Provided is a moisture absorbent in liquid form that can effectively inhibit oil bleeding after application. The present invention relates to a moisture absorbent in liquid form, which is a liquid composition including a moisture absorbable particle and a binder, wherein (1) the binder includes a two-liquid component type silicone, and (2) a viscosity (20° C.) as the liquid composition is 10 to 300 Pa·s.