Conveyor Belt Rubber Coating Composition for Canvas Adhesion
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Solution Overview
Problem
The existing rubber coating compositions for conveyor belts exhibit favorable adhesiveness but require improvement in peel force and rubber sticking, specifically between the canvas and the rubber coating.
Innovation Solution
A rubber coating composition comprising a diene-based rubber component, di-2-benzothiazolyl disulfide, silica, a cresol formaldehyde resin, and a modified etherified methylol melamine, with specific mass ratios, is used to enhance both peel force and rubber sticking, and canvas adhesiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rubber coating composition containing di-2-benzothiazolyl disulfide and resorcinol formaldehyde resin is used, then canvas adhesiveness is improved, but peel force is insufficient
Solution Approach 1:
The patent combines multiple resin components (cresol formaldehyde resin and modified etherified methylol melamine) with rubber and silica to create a composite coating material that achieves both good canvas adhesiveness and high peel force, resolving the contradiction between adhesion and strength
Solution Approach 2:
The patent specifies precise content ranges for each component (cresol formaldehyde resin: 1-5 parts, modified etherified methylol melamine: 1-4 parts per 100 parts diene-based rubber) to optimize the balance between adhesiveness and peel force, demonstrating parameter optimization to resolve the technical contradiction
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 composition achieves excellent canvas adhesiveness, improving both peel force and rubber sticking, resulting in a more effective adhesive layer for conveyor belts.
Implementation Method 1
a rubber composition obtained by compounding predetermined amounts of a diene-based rubber component, di-2-benzothiazolyl disulfide, silica, a cresol formaldehyde resin, and a modified etherified methylol melamine exhibited excellent canvas adhesiveness
Implementation Method 2
a content amount of the silica is from 5.0 parts by mass to 15.0 parts by mass per 100 parts by mass of the diene rubber component
Implementation Method 3
a content amount of the cresol formaldehyde resin is from 1 part by mass to 5 parts by mass per 100 parts by mass of the diene-based rubber component; and a content amount of the modified etherified methylol melamine is from 1 part by mass to 4 parts by mass per 100 parts by mass of the diene-based rubber component
Data Source
AI summary
The present invention addresses the problem of providing a rubber coating composition for use in a conveyor belt, the composition excelling in both peel force and rubber sticking and having excellent canvas adhesiveness, and of providing a laminate and a conveyor belt. The rubber coating composition for a conveyor belt of the present invention contains a diene-based rubber component, di-2-benzothiazolyl disulfide, silica, a cresol formaldehyde resin, and a modified etherified methylol melamine. The content amounts of each of the di-2-benzothiazolyl disulfide, silica, cresol formaldehyde resin, and modified etherified methylol melamine are all within predetermined ranges.