V-Ribbed Belt Rubber Composition for Fabric Adhesion
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Solution Overview
Problem
Conventional V-ribbed belts face limitations in the adhesiveness of their reinforcing fabrics, leading to potential peeling issues between the fabric and the V-shaped rib bodies, which affects durability and transmission efficiency.
Innovation Solution
A V-ribbed belt design utilizing a crosslinked rubber composition with unsaturated carboxylic acid metal salts or maleimide compounds, combined with a cellulose-based fiber reinforcing fabric that is not subjected to adhesion treatment, enhancing adhesiveness without additional treatment processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional reinforcing fabric configurations are used, then the belt structure is simple, but the adhesiveness between the fiber member and V-shaped rib body is insufficient
Solution Approach 1:
The patent changes the chemical parameters of the rubber composition by incorporating specific unsaturated carboxylic acid metal salts (such as zinc acrylate, zinc methacrylate) and maleimide compounds (such as N,N'-m-phenylene bismaleimide) in controlled amounts (0.1-5 parts by mass per 100 parts by mass of rubber component). These parameter changes enable the rubber to form strong chemical bonds with cellulose-based fibers without requiring complex fabric configurations or additional adhesion treatments.
Solution Approach 2:
The patent creates a composite material system combining rubber components (such as EPDM, CR, CSM), unsaturated carboxylic acid metal salts, maleimide compounds, and cellulose-based fibers. This composite approach allows the rubber composition to inherently bond with the fiber member, achieving excellent adhesiveness through material composition rather than structural complexity or surface treatments.
2Reliability
If adhesion treatment is applied to the fiber member, then adhesiveness improves, but the manufacturing process becomes more complex
Solution Approach 1:
The rubber composition itself provides the adhesion function through its chemical composition containing unsaturated carboxylic acid metal salts and maleimide compounds. The fiber member does not require pre-treatment with adhesives or surface modifications because the rubber composition naturally bonds to the cellulose-based fibers during the vulcanization process, eliminating the need for separate adhesion treatment steps.
Solution Approach 2:
By controlling the amounts of unsaturated carboxylic acid metal salt (0.05-5 parts by mass per 100 parts by mass of rubber component) and maleimide compound (0.05-5 parts by mass per 100 parts by mass of rubber component) within specific ranges, the patent achieves optimal adhesion performance directly from the rubber composition, avoiding the need for additional adhesion treatment processes while maintaining excellent bonding strength.
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 achieves excellent adhesiveness between the fiber member and the V-shaped rib body, reducing peeling and enhancing the belt's durability and resistance to abnormal sound under wet conditions.
Implementation Method 1
the crosslinked rubber composition is a crosslinked product of an uncrosslinked rubber composition containing a rubber component, a crosslinking agent, and at least either an unsaturated carboxylic acid metal salt or a maleimide compound
Data Source
AI summary
A V-ribbed belt includes a plurality of V-shaped ribs, each of the plurality of V-shaped ribs includes a V-shaped rib body formed from a crosslinked rubber composition and a fiber member covering a surface of the V-shaped rib body, the crosslinked rubber composition is a crosslinked product of an uncrosslinked rubber composition containing a rubber component, a crosslinking agent, and at least either an unsaturated carboxylic acid metal salt or a maleimide compound, and a total amount of the unsaturated carboxylic acid metal salt and the maleimide compound per 100 parts by mass of the rubber component is 1 to 40 parts by mass.