Segmented Polymer Composition for Crosslinked Tire Tread
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Solution Overview
Problem
The thermoplastic elastomer disclosed in existing patents exhibits insufficient tensile strength and abrasion resistance due to insufficient formation of intermolecular hydrogen bonds, as carbonyl-containing groups and nitrogen-containing heterocyclic rings within the same molecule limit the formation of intermolecular hydrogen bonds.
Innovation Solution
A polymer composition incorporating a polymer with anionic functional groups and a polymer with specific nitrogen-containing functional groups, allowing for the formation of intermolecular hydrogen or ionic bonds, which are then crosslinked via hydrogen or ionic bonding, along with additional crosslinking methods like organic peroxide crosslinking or sulfur vulcanization, to enhance tensile strength and abrasion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If carbonyl-containing groups and nitrogen-containing heterocyclic rings are introduced into the same molecule, then the polymer can form hydrogen bonds, but intermolecular hydrogen bonds are insufficiently formed leading to low tensile strength and abrasion resistance
Solution Approach 1:
The patent divides the hydrogen bond-forming groups into separate polymer molecules. Polymer (A) contains carbonyl-containing groups while polymer (B) contains nitrogen-containing heterocyclic rings. By segmenting the functional groups across different polymer chains rather than concentrating them in one molecule, the invention enables extensive intermolecular hydrogen bonding between separate polymer chains, thereby achieving high tensile strength and abrasion resistance.
2Strength
If carbonyl-containing groups and nitrogen-containing heterocyclic rings are introduced into the same molecule, then the polymer has crosslinking capability, but abrasion resistance remains insufficient
Solution Approach 1:
The patent segments the hydrogen bond-forming functional groups into separate polymer molecules. Polymer (A) contains carbonyl-containing groups and polymer (B) contains nitrogen-containing heterocyclic rings. This segmentation allows extensive intermolecular hydrogen bonding between separate polymer chains, creating a robust crosslinked network structure that provides excellent abrasion resistance.
Solution Approach 2:
The patent creates a composite polymer system by combining polymer (A) with carbonyl-containing groups and polymer (B) with nitrogen-containing heterocyclic rings. This composite approach allows the two different polymer types to interact through intermolecular hydrogen bonding, forming a crosslinked network that enhances abrasion resistance while maintaining the benefits of both polymer components.
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 polymer composition achieves excellent tensile strength and abrasion resistance by forming sufficient intermolecular bonds, outperforming standard polymers and demonstrating improved mechanical properties when used in applications such as automotive tires.
Implementation Method 1
an intermolecular hydrogen bond or ionic bond can be sufficiently formed
Implementation Method 2
an intermolecular hydrogen bond or ionic bond can be sufficiently formed
Implementation Method 3
the polymer molecules are crosslinked via a hydrogen bond or an ionic bond
Data Source
AI summary
Provided is a polymer composition for use in the production of a crosslinked polymer having excellent tensile strength and abrasion resistance. A polymer composition comprising a polymer having multiple anionic functional groups and a polymer having multiple nitrogenated functional groups each represented by formula (1). The anionic functional groups are at least one group selected from a carboxy group, a sulfo group and a phosphate group. In one embodiment, each of the nitrogenated functional groups represented by formula (1) is bound to a structure derived from a conjugated diene compound or a structure derived from an aromatic vinyl compound.