Polyurea Resin Composition for Industrial Glove Coating
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Solution Overview
Problem
Conventional methods for forming a film on a target object using a resin either result in the resin permeating into the object, leading to separation, or forming a coating film without permeation, which is costly and hazardous due to the use of chemicals like alcohols and potassium hydroxide.
Innovation Solution
A polyurea resin composition is prepared by mixing a polyol, a dispersant, and monomers with isocyanate and amine groups, then emulsified with a solvent, allowing part of the composition to permeate into the object while forming a coating film on the surface, enhancing adhesion and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water-repellent treatment is performed using chemicals like alcohol, potassium hydroxide, or calcium chloride to prevent resin permeation, then resin permeation is prevented, but fire risk increases, human body harm occurs, and washing costs increase
Solution Approach 1:
The patent extracts and removes the harmful water-repellent treatment chemicals (alcohol, potassium hydroxide, calcium chloride) from the process entirely. Instead, it uses a water-based polyurea resin composition that inherently prevents unwanted permeation while being safe and environmentally friendly, thus eliminating fire risks and chemical harms.
Solution Approach 2:
The patent replaces expensive and hazardous chemical treatments with a simple water-based resin composition that is safe, non-flammable, and does not require costly washing processes. The water-based formulation is inherently safe and eliminates the need for additional safety measures and washing steps.
2Reliability
If water-repellent treatment is performed to prevent resin permeation, then resin permeation is prevented, but washing and drying processes are required, increasing cost and time
Solution Approach 1:
The patent extracts and eliminates the need for water-repellent treatment and subsequent washing/drying processes. By using a water-based polyurea resin composition, the treatment is inherently washable and safe, removing the need for additional processing steps and reducing time and cost.
Solution Approach 2:
The water-based resin composition is self-washable and does not require additional washing or drying processes. The water-soluble nature of the formulation allows it to be easily removed or washed off without special treatments, making the process self-sufficient and eliminating time-consuming steps.
3Manufacturing precision
If resin is used to form only a coating film on the target object surface, then coating film formation is achieved, but adhesion between the target object and resin is poor
Solution Approach 1:
The patent applies local quality by creating different functional zones within the coating system. The water-based polyurea resin composition forms a coating film on the surface while simultaneously penetrating into the target object's pores, creating strong adhesion at the interface. This dual functionality addresses both coating formation and adhesion requirements.
Solution Approach 2:
The patent uses a composite approach where the water-based polyurea resin composition combines both coating and adhesion functions. The formulation includes water-soluble polyurea resin that can both form a protective coating and penetrate into the substrate to create strong bonding, effectively combining two functions in one material system.
4Reliability
If resin permeates into the target object to form an inner film layer, then adhesion is enhanced, but the resin composition loses coating film forming ability
Solution Approach 1:
The patent applies local quality by creating different functional zones within the coating system. The water-based polyurea resin composition forms a coating film on the surface while simultaneously penetrating into the target object's pores, creating strong adhesion at the interface. This dual functionality addresses both coating formation and adhesion requirements.
Solution Approach 2:
The patent uses partial action by controlling the permeation depth of the resin composition. The water-based formulation allows partial penetration into the target object to ensure adhesion while maintaining sufficient resin at the surface to form a complete coating film. This balanced approach ensures both adhesion and coating formation are achieved.
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 method achieves enhanced adhesion and durability of the industrial glove by forming an inner film layer through permeation and a coating layer on the surface, reducing separation and chemical hazards while optimizing costs.
Implementation Method 1
a part of which permeates into a target object
Implementation Method 2
another part of which is capable of forming a coating film on an outer surface of the target object
Implementation Method 3
mixing a polyol, a dispersant, and monomers with isocyanate and amine groups
Data Source
AI summary
A method of preparing polyurea resin composition comprises forming a prepolymer by mixing about 50 parts by weight to about 80 parts by weight of a polyol, about 4 parts by weight to about 8 parts by weight of a dispersant, and about 20 parts by weight to about 30 parts by weight of a first monomer containing an isocyanate group; forming a first composition by mixing the prepolymer with about 2 parts by weight to about 4 parts by weight of a second monomer containing an amine group; stirring and emulsifying the first composition with about 100 parts by weight to about 200 parts by weight of a solvent; and forming a second composition by further adding about 0.2 part by weight to about 1.5 parts by weight of the second monomer to the emulsified first composition and stirring the resulting composition.