UV Modified Polyester Cord Adhesion to Chloroprene Rubber
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Solution Overview
Problem
The challenge lies in enhancing the adhesion performance between rubber adhesives and polyester cords, as the properties of both materials significantly impact their mutual adhesion, necessitating a specific matching of rubber adhesives with cord properties to achieve improved comprehensive performance.
Innovation Solution
A process and device for improving the treatment of polyester cords and rubber adhesives, involving the extrusion of chloroprene rubber particles, addition of calcined gypsum powders and calcium stearate, mixing with an anti-aging agent, and UV irradiation, followed by compounding and baking, to enhance the bonding strength between the rubber adhesive and the polyester cord.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional rubber adhesive compounding methods are used, then the manufacturing process is simple, but the adhesion strength between rubber adhesive and polyester cord is insufficient
Solution Approach 1:
The polyester cord undergoes preliminary UV irradiation treatment before being combined with the rubber adhesive. This preliminary action modifies the surface properties of the cord, creating better adhesion sites. The UV treatment is performed in advance to ensure the cord surface is optimally prepared for bonding, which directly addresses the adhesion strength issue without requiring complex equipment during the main compounding process.
Solution Approach 2:
The patent introduces specific parameter changes including UV irradiation dose, rubber adhesive composition ratios (such as chloroprene rubber content), and curing conditions. By optimizing these parameters, the adhesion strength is significantly improved. The UV irradiation parameters (wavelength, intensity, duration) are carefully controlled to achieve the desired surface modification effect on the polyester cord.
2Reliability
If multiple modification treatments are applied to both polyester cord and rubber adhesive, then the comprehensive performance is improved, but the production time increases
Solution Approach 1:
The patent combines multiple modification treatments into an integrated process. The UV irradiation of the polyester cord is merged with the rubber adhesive application process, and the curing process combines both the adhesive bonding and the final setting in one step. This merging of operations achieves comprehensive performance improvement while minimizing the total production time by eliminating separate treatment stages.
Solution Approach 2:
The modification treatments are designed to proceed continuously without interruption. The UV irradiation, adhesive application, and curing processes are arranged in a continuous flow, where the output of one process immediately becomes the input of the next. This continuity ensures that the polyester cord and rubber adhesive undergo all necessary modifications in sequence without idle time, maintaining high production efficiency while achieving reliable compounding performance.
3Strength
If high-performance rubber adhesive materials are used, then the adhesion behavior is excellent, but the raw material cost increases
Solution Approach 1:
The patent optimizes the composition parameters of the rubber adhesive to achieve the best performance-cost balance. Specific ratios of chloroprene rubber, vulcanizing agents, and other components are carefully selected. By adjusting these parameters, the adhesive achieves excellent adhesion behavior without requiring excessive amounts of expensive materials. The UV irradiation parameter optimization also reduces the need for additional costly additives.
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 process significantly increases the adhesive force strength between the rubber adhesive and the polyester cord, achieving a bonding strength of over 20.3 N/cm, while ensuring a continuous and cost-effective modification treatment.
Implementation Method 1
irradiating a polyester cord at a distance of 10 cm using a 30 W UV lamp at the irradiation temperature of 25-30° C., so as to obtain a UV modified polyester cord
Implementation Method 2
performing baking treatment on the compounded sheet at the temperature of 50-60° C. for at least 10 min
Data Source
AI summary
The present disclosure relates to the technical field of adhesion property improvement, particularly to a process and device for improvement treatment of a polyester cord and a rubber adhesive. By filling an extremely few amount of calcined gypsum powders into chloroprene rubber to be secondarily stirred and extruded while adding fatty acid calcium and an anti-aging agent and uniformly mixing a stirring and mixing component using a specific solvent, the adhesion behavior between the rubber adhesive and the polyester cord is increased, and the bonding strength between the rubber adhesive and the polyester cord is improved; furthermore, through mutual connection and installation of the extrusion modification component, stirring and mixing component and the compounding modification component, continuous operation of modification treatment of the polyester cord and the rubber adhesive, the structure is simple, and use is convenient..