Biomass PPF Reinforcing Cord for Tire Durability
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Solution Overview
Problem
Conventional reinforcing cords for elastomeric products, particularly in pneumatic vehicle tires, face issues with inconsistent fiber quality, moisture sensitivity, and high costs due to reliance on fossil-based materials, leading to reduced durability and environmental impact.
Innovation Solution
The use of polypropylene dicarboxyfuranoate (PPF) filaments produced from biomass and renewable raw materials, which offer consistent quality, improved processability, and biodegradability, along with the option of hybrid cord constructions using different materials to enhance properties like shrinkage and modulus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If natural fibers or non-petroleum-based materials are used for reinforcing cords, then environmental friendliness and resource saving are improved, but fiber quality consistency and durability are worsened
Solution Approach 1:
The patent employs composite material construction by combining PPF filaments (derived from renewable raw materials) with traditional polyester or polyamide yarns to create hybrid reinforcing cords. This composite approach allows the PPF component to provide environmental benefits while the conventional yarns ensure mechanical reliability and consistent performance, effectively resolving the contradiction between eco-friendliness and product durability.
Solution Approach 2:
The patent utilizes parameter changes by carefully controlling the molecular structure and physical properties of PPF, specifically its lower melting point and reduced crystallinity compared to PEF. These parameter modifications enable PPF to maintain flexibility and processability while deriving from renewable resources, thus achieving both environmental improvement and reliable performance.
2Object-affected harmful factors
If PEF is used as a renewable material alternative, then environmental sustainability is improved, but processability and windability are worsened due to quick crystallization and embrittlement
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure from PEF to PPF, specifically changing the diol segment to have higher and odd number of methylene units. This structural parameter change results in PPF having a lower melting point and lower degree of crystallinity, which directly improves processability, windability, and prevents premature embrittlement while maintaining renewable material benefits.
Solution Approach 2:
The patent effectively replaces the problematic PEF material with PPF, which offers similar renewable material benefits but without the severe processing limitations. This substitution allows for practical manufacturing and application, making the renewable material solution viable for commercial use in tire reinforcements.
3Object-affected harmful factors
If rayon is used for belt bandage reinforcement, then non-petroleum-based material usage is improved, but moisture sensitivity and breaking strength are worsened
Solution Approach 1:
The patent uses composite material construction by combining PPF filaments with conventional polyester or polyamide yarns in hybrid cord structures. This approach allows the PPF component to fulfill the requirement for non-petroleum-based materials while the conventional yarns provide the necessary strength and moisture resistance, thereby resolving the contradiction between material sustainability and mechanical performance.
4Ease of manufacture
If PPF with lower melting point and lower crystallinity is used, then processability and stretchability are improved, but material rigidity may be reduced
Solution Approach 1:
The patent employs composite material construction where PPF filaments are combined with conventional polyester or polyamide yarns. The PPF component provides improved processability and stretchability due to its lower melting point and crystallinity, while the conventional yarns contribute structural rigidity and stability, achieving a balanced performance suitable for tire reinforcements.
Data Source
AI summary
The invention relates to a reinforcing cord for elastomeric products, in particular for vehicle tires, comprising at least one yarn made of filaments. The invention further relates to an elastomeric product comprising at least one reinforcing cord. For environmental and resource conservation while maintaining good processing properties, at least one yarn of the reinforcing cord comprises filaments made of polypropylene dicarboxyfuranoate (PPF), wherein the PPF is produced entirely or at least partially from biomass and/or renewable raw materials.