Polyurea Coated Tool Holder Resists Liquid Absorption
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Solution Overview
Problem
Traditional tool supports made of polyethylene foam are prone to degradation, absorb liquids, and increase the risk of foreign objects being lost during engine assembly, particularly in the aeronautical field, where precision is critical.
Innovation Solution
A support system featuring a waterproof elastomer coating, preferably polyurea, applied to a polyurethane main body with concave receiving cavities that match the equipment's shape, providing chemical resistance, flexibility, and visual identification of missing tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If polyethylene foam is used as the tool holder material, then the material is soft and easy to manufacture, but it absorbs liquids, degrades over time, and increases the risk of foreign objects being lost
Solution Approach 1:
The tool holder combines polyethylene foam core material with a polyurea coating layer. The foam provides structural support and ease of manufacturing, while the polyurea coating provides liquid resistance, chemical corrosion resistance, and prevents foam degradation. This composite structure resolves the contradiction by integrating the advantages of both materials.
Solution Approach 2:
A thin polyurea coating layer is applied over the polyethylene foam substrate. This flexible film provides the necessary liquid barrier and chemical resistance without significantly adding weight or complexity, while protecting the underlying foam material from degradation and foreign object contamination.
2Ease of manufacture
If traditional polyethylene foam is used, then the cost is low and manufacturing is simple, but the service life is short and it breaks up over time
Solution Approach 1:
The combination of polyethylene foam and polyurea coating creates a composite structure where the foam provides structural integrity and the polyurea provides durability and resistance to environmental factors. This extends the service life significantly while maintaining manufacturing simplicity through the sequential application process.
Solution Approach 2:
The polyurea coating is applied beforehand to protect the polyethylene foam from liquid damage, chemical corrosion, and mechanical degradation. This protective layer prevents premature breakdown of the foam structure, extending its operational life.
3Quantity of substance
If polyethylene foam is used, then the material is inexpensive, but it absorbs liquids and disperses when damaged, creating foreign object contamination risk
Solution Approach 1:
The polyurea coating acts as a protective film that prevents liquid absorption and contains the foam material. Even if the foam is damaged, the coating prevents foam particles from dispersing, thereby eliminating the foreign object contamination risk while maintaining cost-effectiveness.
Solution Approach 2:
The coating transforms the potentially harmful property of foam dispersal into a contained system. The polyurea layer converts the risk of foreign object contamination into a protected environment where even if foam is damaged, no particles can escape into the surrounding area.
4Reliability
If a thick coating is applied to ensure complete coverage and protection, then the protective qualities are improved, but the manufacturing cost increases
Solution Approach 1:
The polyurea coating is applied as a thin film that provides complete coverage and protection. The flexible nature of the coating allows it to conform to the foam surface effectively, providing adequate protection with minimal material usage, thus controlling costs while maintaining reliability.
Solution Approach 2:
The composite structure allows the thinner polyurea coating to work effectively with the foam substrate. The foam provides structural support, reducing the burden on the coating thickness, while the coating provides the necessary protective qualities. This division of functions optimizes both protection and cost.
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 prevents liquid absorption, maintains structural integrity, reduces the risk of tool loss, and ensures stable equipment support, while allowing easy cleaning and visual detection of missing items, thereby minimizing the risk of engine malfunction.
Implementation Method 1
If liquid is spilled onto the substrate, the liquid is not absorbed by the substrate, preventing premature degradation
Implementation Method 2
an elastomer has good chemical corrosion resistance characteristics
Implementation Method 3
due to its flexibility and elasticity, it is optimally resistant to tearing
Data Source
Figure 1~3
Figure 2
AI summary
The invention relates to a holder (S) for holding implements, the holder (S) comprising at least one concave receiving cavity (10) designed to at least partially receive the implements, and at least one watertight elastomer coating (2) designed to come into contact with the implements.