Rubber Composition Rigidity via TMQ and Methylene Resin
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Solution Overview
Problem
Rubber compositions face a challenge in increasing rigidity without compromising processability and cohesiveness, as adding reinforcing fillers or resins often results in degradation of these desired characteristics.
Innovation Solution
Incorporating poly-2,2,4-trimethyl-1,2-dihydroquinoline (TMQ) and a methylene acceptor/donor system reinforcing resin into the rubber composition, which enhances rigidity without significant degradation in green viscosity or cured cohesiveness, allowing for reduced carbon black content and improved rolling resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforcing fillers or resins are added to increase rigidity, then rigidity is improved, but processability and cohesiveness deteriorate
Solution Approach 1:
The patent changes the chemical composition parameters by introducing TMQ antioxidant in specific amounts (3-10 phr) alongside the methylene acceptor/donor system. This parameter modification allows achieving the desired rigidity improvement while maintaining processability by optimizing the chemical interaction between components rather than simply increasing filler content
Solution Approach 2:
The patent creates a composite system combining rubber polymer, reinforcing filler, methylene acceptor/donor resin system, and TMQ antioxidant. This multi-component composite approach allows the synergistic interaction where TMQ protects the resin-rubber interface, enabling rigidity enhancement without sacrificing processability or cohesiveness
2Strength
If reinforcing fillers or resins are added to increase rigidity, then rigidity is improved, but cured cohesiveness deteriorates
Solution Approach 1:
TMQ acts as an intermediary substance that mediates between the reinforcing resin system and the rubber polymer matrix. The antioxidant protects the interfacial regions from degradation and maintains the integrity of the three-dimensional network structure, ensuring cured cohesiveness is preserved even as rigidity increases through resin addition
Solution Approach 2:
By introducing TMQ at optimized concentrations (3-10 phr), the patent modifies the chemical stability parameters of the cured network. This parameter change ensures that the cross-linked structure maintains its cohesiveness while the methylene acceptor/donor system provides the desired rigidity enhancement
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 combination of TMQ and the methylene acceptor/donor system resin improves the rigidity of rubber compositions while maintaining processability and cohesiveness, enabling reduced carbon black usage and improved tire performance.
Implementation Method 1
Many of these resins are classified as being methylene acceptor/donor systems that react together to generate a three-dimensional reinforcing resin network by a condensation reaction
Implementation Method 2
rubber compositions that include the well-known antioxidant poly-2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)
Data Source
AI summary
Rubber compositions and rubber articles manufactured from such rubber compositions that include the well-known antioxidant poly-2,2,4-trimethyl- 1,2-dihydroquinoline (TMQ) having the formula (C12H15N)n where n=2~4 as well as a methylene acceptor/donor system reinforcing resin. Such embodiments include a tire component comprising a rubber composition that is based upon a cross -linkable elastomer composition, the cross-linkable rubber composition comprising, per 100 parts by weight of rubber (phr), a highly unsaturated diene elastomer, reinforcing filler, between 0.5 phr and 10 phr of TMQ and the methylene acceptor/methylene donor.