Polyimide Fixing Roller With PEKK Sliding Layer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the field of office automation, particularly in image-forming apparatuses, there is a need for a fixing roller with improved wear resistance and reduced friction coefficient to enhance durability and reduce torque, as existing polyimide-based rollers suffer from wear debris accumulation and high friction.
Innovation Solution
A formed article comprising a cylindrical base layer with polyimide as the main component, a sliding layer containing polyether ether ketone on the inner surface, and an outermost layer with fluororesin on the outer surface, which reduces friction and improves wear resistance while maintaining polyimide's formability and processability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a polyimide tubular article is used for the fixing roller, then formability is improved, but wear resistance deteriorates due to wear debris generation
Solution Approach 1:
The fixing roller is divided into multiple functional layers: a polyimide base layer for formability, and a separate wear-resistant layer containing wear-resistant particles. This segmentation allows each layer to perform its specialized function independently, resolving the contradiction between formability and wear resistance.
Solution Approach 2:
The fixing roller uses a composite structure combining polyimide material with wear-resistant particles (such as PTFE, polyacetal, or ultra-high-molecular-weight polyethylene). This composite material approach integrates the formability of polyimide with the wear resistance of the added particles, simultaneously achieving both desirable properties.
2Ease of manufacture
If a polyimide tubular article is used for the fixing roller, then formability is improved, but friction coefficient increases leading to higher torque
Solution Approach 1:
The fixing roller incorporates a composite material system where wear-resistant particles (PTFE, polyacetal, or ultra-high-molecular-weight polyethylene) are dispersed in the polyimide matrix. These particles provide low-friction properties that reduce the coefficient of friction and torque, while the polyimide base maintains excellent formability.
Solution Approach 2:
The wear-resistant and low-friction particles are distributed within the polyimide structure to create local regions with reduced friction coefficients. This local modification of properties allows the overall structure to maintain polyimide's formability while specific areas provide reduced friction and torque.
3Reliability
If wear-resistant particles are added to polyimide, then wear resistance is improved, but manufacturing complexity increases
Solution Approach 1:
The manufacturing process merges the formation of the polyimide base layer and the incorporation of wear-resistant particles into a single integrated extrusion or molding process. This combining of steps simplifies production despite the multi-component nature of the material, avoiding the need for separate assembly operations.
Data Source
AI summary
A formed article according to one embodiment of the present disclosure includes a cylindrical base layer containing a polyimide as a main component, a sliding layer disposed on an inner circumferential surface side of the base layer and containing a polyether ether ketone as a main component, and an outermost layer disposed on an outer circumferential surface side of the base layer and containing a fluororesin as a main component.