Crosslinking Agent Composition for Tougher Tire GRC Monofilaments
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Solution Overview
Problem
Existing glass-resin composite (GRC) monofilaments used in vehicle tires have limitations in terms of elongation at break and flexural modulus, which can be further improved for enhanced performance.
Innovation Solution
The use of specific crosslinking agents in resin compositions, particularly those based on vinyl ester or unsaturated polyester resins, with a crosslinking agent of general formula R1—X—R2, where X is an optionally substituted alkylene group and R1 and R2 are acrylate, methacrylate, vinyl, or alkenyl groups, enhances the elongation at break and flexural modulus of the composites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional crosslinking agents are used in GRC monofilaments, then the composite achieves basic structural properties, but the elongation at break and flexural modulus remain limited
Solution Approach 1:
The patent applies parameter changes by modifying the crosslinking agent structure from conventional options to specific compounds with defined molecular weights (500-5000 g/mol) and functional group ratios. This changes the chemical parameters of the resin system to achieve superior elongation at break (>4%) and flexural modulus while maintaining crosslinking functionality.
Solution Approach 2:
The invention uses composite materials by combining vinyl ester or unsaturated polyester resin with specific crosslinking agents and initiators to create a multi-component resin system. This composite approach at the molecular level produces a crosslinked network with optimized mechanical properties that neither component could achieve alone.
2Strength
If conventional crosslinking agents are used in GRC monofilaments, then the composite achieves basic structural properties, but the flexural modulus remains limited
Solution Approach 1:
The patent applies parameter changes by modifying the crosslinking agent structure from conventional options to specific compounds with defined molecular weights (500-5000 g/mol) and functional group ratios. This changes the chemical parameters of the resin system to achieve superior elongation at break (>4%) and flexural modulus while maintaining crosslinking functionality.
Solution Approach 2:
The invention uses composite materials by combining vinyl ester or unsaturated polyester resin with specific crosslinking agents and initiators to create a multi-component resin system. This composite approach at the molecular level produces a crosslinked network with optimized mechanical properties that neither component could achieve alone.
3Strength
If steel cords are used for reinforcement, then high strength is achieved, but weight increases and corrosion problems occur
Solution Approach 1:
The patent applies parameter changes by transitioning from metallic reinforcement to glass fiber reinforcement with resin impregnation. This fundamental material parameter change reduces density (glass fiber ~2.5 g/cm³ vs steel ~7.8 g/cm³) while maintaining or improving mechanical properties through the glass-resin composite effect.
Solution Approach 2:
The invention uses composite materials by replacing homogeneous steel cord with a composite system of glass fibers impregnated with crosslinked resin. This composite structure provides both the structural strength of glass and the protective, bond-enhancing properties of the cured resin matrix, eliminating corrosion while reducing weight.
4Strength
If steel cords are used for reinforcement, then high strength is achieved, but corrosion resistance deteriorates
Solution Approach 1:
The patent applies parameter changes by transitioning from metallic reinforcement to glass fiber reinforcement with resin impregnation. This fundamental material parameter change reduces density (glass fiber ~2.5 g/cm³ vs steel ~7.8 g/cm³) while maintaining or improving mechanical properties through the glass-resin composite effect.
Solution Approach 2:
The invention uses composite materials by replacing homogeneous steel cord with a composite system of glass fibers impregnated with crosslinked resin. This composite structure provides both the structural strength of glass and the protective, bond-enhancing properties of the cured resin matrix, eliminating corrosion while reducing weight.
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 improved resin compositions exhibit enhanced elongation at break and flexural modulus compared to prior art composites, making them more suitable for use in vehicle tires, where they can provide better reinforcement and durability.
Implementation Method 1
a crosslinking initiator and a crosslinking agent of general formula (I)... The crosslinking initiator and crosslinking agent enable the resin to form a crosslinked structure... giving the composites comprising such compositions properties that are notably improved
Implementation Method 2
the crosslinking initiator is a photoinitiator sensitive to UV above 300 nm, preferably between 300 and 450 nm
Data Source
AI summary
A resin composition is based on a resin chosen from the group consisting of unsaturated polyester resins and vinyl ester resins, a crosslinking initiator and a crosslinking agent of general formula R1—X—R2, in which X is an optionally substituted alkylene group and R1 and R2 are, independently of one another, an acrylate, methacrylate or vinyl group, an alkenyl group bearing an unsaturated carbon at the chain end, or an alkynyl group bearing an unsaturated carbon at the chain end.