Water-Based Rubber Adhesive Composition Without RF Components
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Solution Overview
Problem
Existing adhesive compositions for rubber composites, particularly in tire manufacturing, often rely on resorcinol-formaldehyde (RF) components, which are harmful to human health and require costly management and disposal. Additionally, these compositions may lack sufficient adhesive strength and processability.
Innovation Solution
The development of an eco-friendly adhesive composition comprising a latex, polyurethane, an amine-based adhesion promoter, and a water-containing solvent, with a specific viscosity range of 2.50 to 3.00, to enhance adhesive strength and coating processability while avoiding RF components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If resorcinol-formaldehyde (RF) adhesive is used to improve adhesive strength between fiber and rubber, then adhesive strength is improved, but harmful factors increase due to carcinogenic components
Solution Approach 1:
The patent removes the harmful RF components (resorcinol and formaldehyde) from the adhesive composition while maintaining the adhesive functionality through alternative components such as polyurethane and polyester polymers
Solution Approach 2:
The patent changes the chemical composition parameters by replacing RF-based adhesives with water-based alternatives containing polyurethane and polyester, thereby eliminating carcinogenic properties while preserving adhesive strength
2Ease of operation
If excessive solvent is used in adhesive composition to improve coating flowability, then flowability is improved, but adhesive strength decreases due to insufficient component mixing
Solution Approach 1:
The patent optimizes the solvent content parameter within a specific range (60-85 wt% water) to achieve the right balance between flowability for coating and sufficient concentration for adhesive strength, avoiding both excessive and insufficient solvent conditions
3Ease of manufacture
If adhesive components are not uniformly mixed to simplify the process, then process complexity is reduced, but adhesive strength is insufficient due to poor mixing
Solution Approach 1:
The patent ensures homogeneous distribution of adhesive components through proper mixing procedures and formulation design, creating a uniform composition that delivers consistent adhesive performance across the entire coating
Data Source
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AI summary
The present invention relates to an adhesive composition including a latex (A), a polyurethane (B), an amine-based adhesion promoter (C), and a water-containing solvent (G). The composition is eco-friendly, has a low risk of fire, and has excellent adhesive strength.