Ambient humidity control article
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Solution Overview
Problem
Conventional humidity control silica gel production generates significant wastewater, making it unsustainable and prompting a need for an environmentally friendly alternative that can maintain ambient humidity within 45%-55% for product storage.
Innovation Solution
An ambient humidity control article comprising a water-absorbent substrate coated with a humidity control composition of organic acid salts (such as sodium lactate, potassium lactate, and sodium formate) and polyols (like glycerol or ethylene glycol), which allows for effective moisture absorption and desorption without pre-adjustment, ensuring safe and eco-friendly humidity control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If humidity control silica gel is used to control ambient humidity, then humidity control effectiveness is improved, but environmental pollution increases due to wastewater production
Solution Approach 1:
The invention changes the chemical composition parameters of the humidity control material from traditional silica gel to an organic acid salt-polyol-water system. This parameter change enables the material to achieve effective humidity control through reversible phase transitions and chemical reactions, while eliminating the wastewater production associated with silica gel manufacturing and activation processes.
Solution Approach 2:
The invention uses a composite material system consisting of organic acid salt, polyol, and water in specific proportions. This composite approach combines the hygroscopic properties of organic acid salts with the phase transition capabilities of polyols, creating an environmentally friendly humidity control material that outperforms traditional silica gel without generating pollution.
2Reliability
If traditional humidity control methods are used, then humidity control capability is achieved, but green and environmental sustainability is compromised
Solution Approach 1:
The invention employs an organic acid salt-polyol-water system that can be easily manufactured and disposed of without environmental harm. The materials are biodegradable and non-toxic, allowing the humidity control article to be replaced when depleted without creating long-term environmental issues, thus achieving sustainability through controlled short-living design.
Solution Approach 2:
The invention converts the typically harmful wastewater byproduct of silica gel production into a beneficial feature by using a water-based organic acid salt-polyol system where water is the solvent and final degradation product. This converts what was previously a harmful element (wastewater) into a benign component of the system.
3Manufacturing precision
If humidity control composition is applied to substrate, then humidity control within 45%-55% is achieved, but coating amount and composition ratios must be precisely controlled
Solution Approach 1:
The invention establishes specific parameter ranges for the organic acid salt (30.6%-58.8% by weight), polyol (9.3%-26.7% by weight), and water content, along with a controlled coating amount (0.54-0.74 grams per cubic centimeter of substrate). These parameter specifications enable precise humidity control within the 45%-55% range while providing clear manufacturing guidelines that simplify the control process.
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 controls ambient humidity within 45%-55%, is cost-effective, safe for protected items, and environmentally friendly, with the ability to naturally decompose without causing secondary pollution, offering a sustainable alternative to traditional silica gel.
Implementation Method 1
the humidity control composition comprises at least one of organic acid salt, at least one of polyols and water... the water absorption amount of the substrate is not less than 0.5 grams per cubic centimeter
Implementation Method 2
the substrate, which has a certain water absorbability... the water absorption amount of the substrate is not less than 0.5 grams per cubic centimeter
Data Source
AI summary
An ambient humidity control article for controlling the ambient humidity within 45%-55%. The article includes a substrate having a predetermined water absorbability, and a humidity control layer coated on the substrate. The amount of the composition coated on per cubic centimeter of the substrate is 0.54-0.74 grams. The composition includes at least one organic acid salt, at least one polyol and water. The count of carbon in the polyols is not greater than 5. The weight percentage of the organic acid salt and the polyols in the composition is 30.6%-58.8% and 9.3%-26.7%, respectively. The water absorption amount of the substrate is not less than 0.5 grams per cubic centimeter. The article can control the ambient humidity without the need to pre-adjust the objective space. The article has a large capacity of moisture absorption and desorption, and can quickly achieve the desired humidity.