Conductive Roller Elastic Layer Waterproofing Agent Pore Control
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Solution Overview
Problem
Conductive rollers with elastic layers composed of foam bodies exhibit wide resistance variation under high temperature and high humidity environments, and it is challenging to achieve a fine pore size on the surface, leading to unevenness and poor surface properties.
Innovation Solution
Incorporating a waterproofing agent, such as ammonium zirconium carbonate, into the polyurethane foam composition of the elastic layer to form a conductive roller with improved resistance stability and fine pore size, reducing environmental dependence and enhancing surface properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a free foaming method is used to manufacture the elastic layer, then the manufacturing process is simple, but the pore size on the surface cannot be controlled and is typically large, leading to poor surface properties
Solution Approach 1:
The patent changes the chemical composition parameters of the foam by introducing a waterproofing agent (wax) into the polyurethane foam formulation. This parameter change modifies the foaming behavior and surface characteristics, enabling fine pore size formation while maintaining the simplicity of the free foaming manufacturing process.
2Ease of manufacture
If the pore size on the surface of the elastic layer is large, then the manufacturing is easier, but the surface properties deteriorate and coating layers become uneven due to soaking into pores
Solution Approach 1:
The patent creates a composite foam material by combining polyurethane resin with a waterproofing agent (wax). This composite structure provides both the desired fine pore size and improved surface properties, preventing coating soaking while maintaining manufacturing ease through the free foaming process.
3Ease of manufacture
If conventional foam materials are used without waterproofing agents, then the manufacturing cost is lower, but the resistance variation under high temperature and high humidity environments is wide
Solution Approach 1:
The patent modifies the chemical composition of the foam by adding a waterproofing agent (wax) at specific concentrations (0.1-5 parts by mass per 100 parts of polyurethane resin). This parameter change enhances the foam's resistance to environmental factors, significantly reducing resistance variation under high temperature and humidity conditions while maintaining cost-effectiveness.
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 conductive roller demonstrates reduced resistance variation across different environmental conditions and improved surface properties with a fine pore size, ensuring consistent performance and quality.
Implementation Method 1
the elastic layer is composed of a polyurethane foam containing a polyurethane resin and a waterproofing agent
Data Source
AI summary
Provided is a conductive roller including a shaft 1, and an elastic layer 2 and a surface layer 3 formed on the periphery of the shaft in the order mentioned. The elastic layer 2 is composed of a polyurethane foam containing a polyurethane resin and a waterproofing agent. By containing the waterproofing agent in the formulation of the polyurethane foam constituting the elastic layer 2, the environment-dependence of the roller resistance is improved, the resistance variance accompanied by change in the environment can be controlled, and pores formed on the surface of the elastic layer 2 are made fine, whereby the surface properties of the roller improve. Also provided is a method of manufacturing the above-mentioned conductive roller.