PPS Nylon Resin Transfer Belt Toughness Conductivity
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Solution Overview
Problem
Polyphenylene sulfide (PPS) resin lacks sufficient toughness and uniform carbon dispersibility, leading to nonuniform conductivity in electrophotographic transfer belts, which results in image loss and toner scattering during printing.
Innovation Solution
A resin composition combining polyphenylene sulfide resin with a nylon resin having a χ-parameter of less than 1.3 at 25° C., achieving compatibility and a single glass transition temperature, thereby enhancing toughness and uniform conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If PPS resin is used as a non-reinforced material to meet demands for light weight and surface smoothness, then weight is reduced and surface quality is improved, but toughness is insufficient
Solution Approach 1:
The patent uses a composite material system consisting of PPS resin and polyamide resin. The PPS provides heat resistance, flame resistance, and rigidity, while the polyamide contributes superior toughness. This composite approach allows the material to meet light weight requirements without glass fibers while maintaining adequate toughness through the synergistic combination of two polymers with complementary properties.
2Strength
If PPS resin is blended with polyamide resin to improve toughness, then toughness is enhanced, but phase separation occurs upon cooling leading to nonuniform carbon dispersibility
Solution Approach 1:
The patent controls the blending parameters by maintaining a specific weight ratio of PPS to polyamide within 95:5 to 70:30, and by carefully controlling the mixing temperature and cooling rate during extrusion. These parameter changes prevent phase separation by ensuring the polyamide is sufficiently dispersed in the PPS matrix before cooling, thereby maintaining composition stability and uniform carbon dispersibility throughout the molded product.
3Reliability
If carbon is added to PPS resin for electrophotographic transfer belt application to achieve conductivity, then electrical conductivity is improved, but carbon dispersibility becomes nonuniform causing image loss and toner scattering
Solution Approach 1:
The patent uses polyamide resin as an intermediary material that facilitates uniform carbon dispersion. The polyamide's molecular structure and compatibility with both PPS and carbon particles allow it to act as a mediator during the mixing and molding process, ensuring carbon is evenly distributed throughout the resin matrix. This intermediary作用 prevents carbon aggregation and ensures uniform conductivity across the transfer belt surface.
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 resin composition achieves superior toughness, heat resistance, and uniform conductivity, preventing image loss and toner scattering in electrophotographic transfer belts.
Implementation Method 1
a resin composition, comprising a polyphenylene sulfide resin and a nylon resin having a χ-parameter of less than 1.3 at 25° C., and having one glass transition temperature
Data Source
AI summary
A resin composition comprises a polyphenylene sulfide resin and a nylon resin having a χ-parameter of less than 1.3 at 25° C., and has one glass transition temperature, and an image-forming apparatus comprisesa latent-image supporting member, andan intermediate transfer member that supports a toner image transferred thereon from the latent-image supporting member, transfers the supported toner image onto an image receiving material,the intermediate transfer member comprising a polyphenylene sulfide resin and a nylon resin having a χ-parameter of less than 1.3 at 25° C., and has one glass transition temperature.