High Specific Gravity Rubber Wheel Balance Weight
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Solution Overview
Problem
Current wheel balance weights face issues with flexibility, precision, and corrosion resistance due to the use of lead being banned and alternative materials like zinc-plated steel sheets, which are difficult to automate, cut, and maintain high precision, leading to vibrations and corrosion concerns.
Innovation Solution
A high thermal resistance synthetic rubber is developed by blending acrylic rubber and fluoro rubber without a crosslinking agent, combined with stainless steel powder to create a high specific gravity compound that can be cut and molded for wheel balance weights, offering excellent adhesive strength and corrosion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If zinc-plated steel sheet is used for wheel balance weight, then corrosion resistance is improved, but flexibility and ease of cutting are worsened
Solution Approach 1:
The invention uses a composite material consisting of rubber base polymer combined with metal powder (such as stainless steel powder). This composite provides both the corrosion resistance of metal and the flexibility of rubber, resolving the contradiction between durability and ease of manufacturing. The rubber matrix allows the material to be easily cut and shaped while the metal powder provides corrosion resistance and high specific gravity.
2Ease of manufacture
If lead is used for wheel balance weight, then ease of processing and bending is improved, but harmful effects to body are worsened
Solution Approach 1:
The invention replaces toxic lead with a safe alternative composite material made of rubber and metal powder. This substitution eliminates the harmful effects while maintaining the desired processing characteristics. The rubber-based composite can be easily processed and bent similar to lead, but without the health hazards.
3Strength
If steel sheet is used for wheel balance weight, then strength is improved, but adhesive strength to wheel and vibration resistance are worsened
Solution Approach 1:
The rubber-based composite material combines the strength benefits of metal powder with the adhesive advantages of rubber. The rubber matrix provides excellent adhesive strength to the wheel surface and vibration damping properties, while the embedded metal powder contributes to overall strength and high specific gravity. This composite structure resolves the contradiction between strength and reliability.
4Measurement precision
If minimum weight of 5 g is required for zinc-plated steel balance weight, then precision of balance is worsened, but material availability is improved
Solution Approach 1:
The invention changes the density parameter of the balance weight material by using a rubber-based composite with embedded metal powder. This high-specific-gravity composite allows the production of very small weight pieces (less than 5 g) that still provide sufficient balancing effect, thereby improving measurement precision while maintaining material availability.
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 provides a high specific gravity compound with enhanced thermal resistance, corrosion resistance, and improved adhesive strength, enabling precise weight adjustment and long-term durability without the need for automation, reducing inventory costs and enhancing productivity.
Implementation Method 1
fluoro rubber and acrylic rubber which are directly mutually vulcanized and blended
Implementation Method 2
high specific gravity elastic body can be formed by employing the synthetic rubber as a base polymer and using a metal powder as a filler
Implementation Method 3
excellent curve adhesive strength of a wheel
Data Source
AI summary
The present invention relates to high thermal resistance synthetic rubber and a compound for a wheel balance weight using the same. In some aspects, the high specific gravity compound for the wheel balance weight has excellent curve adhesive strength and is capable of being cut and used as needed. Provided herein is a method of forming a high thermal resistance elastic body synthetic rubber. The method includes blending acrylic rubber and fluoro rubber. A wheel balance weight having a high specific gravity elastic body can be formed by using the high thermal resistance synthetic rubber described herein as a base polymer and a metal powder.