Sliding Resin Composition for Dry Contact With Soft Metals
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Solution Overview
Problem
Existing sliding members used in submersible pumps and other applications experience unsatisfactory sliding properties and wear under dry conditions, particularly when a soft metal like an aluminum alloy is used as a mating material, and conventional carbon fibers cause damage to these materials.
Innovation Solution
A resin composition is developed by blending uncarbonized carbon fiber with a specific 5% weight loss temperature and a lubricating additive in predetermined proportions, which is used to create a sliding member with improved friction coefficient and reduced wear over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional carbon fiber is used as reinforcing material in sliding members, then structural strength is improved, but damage to soft metal mating materials occurs and sliding properties deteriorate under dry conditions
Solution Approach 1:
The patent changes the key parameter of carbon fiber treatment temperature from conventional high temperatures (1000-1500°C) to low temperatures (500-900°C). This parameter change transforms the carbon fiber characteristics to provide lubricating properties while maintaining structural strength, thereby protecting soft metal mating materials from damage and improving sliding properties under dry conditions
Solution Approach 2:
The patent creates a composite material system combining uncarbonized carbon fiber (low-temperature treated) with conventional resins. This composite provides both the structural strength from the fiber reinforcement and the lubricating properties from the uncarbonized carbon surface, resolving the contradiction between strength and protection of mating materials
2Reliability
If water circulation is provided to sliding surfaces, then sliding properties are improved, but the system becomes complex and water supply mechanisms are required
Solution Approach 1:
The patent enables the sliding member to provide its own lubrication through the uncarbonized carbon fiber embedded in the resin matrix. The carbon fiber naturally transfers to the mating surface and creates a low-friction interface without requiring external water supply systems,从而实现 self-lubrication and eliminating complex water circulation mechanisms
Solution Approach 2:
The patent replaces the mechanical water circulation system with a material-based lubrication mechanism. Instead of using water as a lubricant delivered through complex channels and pumps, the invention uses the inherent lubricating properties of uncarbonized carbon fiber embedded in the sliding member material itself
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 provides a sliding member with low friction and reduced wear, even under dry conditions, effectively protecting soft metals and maintaining performance over a long period.
Implementation Method 1
a resin composition for a sliding member which contains uncarbonized carbon fiber
Implementation Method 2
which is used to create a sliding member with improved friction coefficient and reduced wear over time
Data Source
AI summary
A resin composition for a sliding material that can provide a sliding member having excellent sliding properties and the like under dry conditions even in a case where a soft metal such as an aluminum alloy is used as a mating material, and the like are provided. Disclosed are a resin composition for a sliding material in which 10 to 400 parts by weight of uncarbonized carbon fiber having a 5% weight loss temperature having a value within the range of 400 to 550° C. as measured by thermogravimetry, as a blending component (b), and 10 to 80 parts by weight of a lubricating additive as a blending component (c) are blended with 100 parts by weight of a resin component as a blending component (a), and the like.