Solid Rubber Tire Compound Using Pyrolysis Carbon Black
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Solution Overview
Problem
Solid rubber tires contain high levels of polycyclic aromatic hydrocarbons (PAHs) from industrial carbon blacks, which are harmful to health and environment, and have high manufacturing costs due to material usage and time-consuming vulcanization processes.
Innovation Solution
Replace industrial carbon blacks with pyrolysis soot, which is derived from recycled tire waste, reducing PAH content and maintaining rolling resistance properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If industrial carbon black is used in rubber compounds, then the necessary strength and rolling resistance properties are achieved, but high levels of polycyclic aromatic hydrocarbons (PAHs) are introduced which are harmful to health and environment
Solution Approach 1:
The patent changes the chemical composition parameters of the filler material by replacing industrial carbon black with pyrolysis carbon black. This substitution maintains the necessary mechanical strength and rolling resistance properties while significantly reducing PAH content to below detection limits, thus resolving the contradiction between strength requirements and harmful substance reduction
Solution Approach 2:
The patent utilizes pyrolysis carbon black derived from recycled tire waste, transforming a waste product into a valuable filler material. This approach not only eliminates PAH concerns but also provides economic benefits through waste valorization, replacing expensive industrial carbon black with a sustainable alternative
2Object-affected harmful factors
If conventional industrial carbon black is used, then rolling resistance properties are maintained, but health and environmental harm increases
Solution Approach 1:
The patent modifies the chemical parameters of the carbon black filler by using pyrolysis carbon black instead of industrial carbon black. This change maintains the critical rolling resistance behavior required for tire performance while reducing health harm by eliminating PAHs, thus resolving the contradiction between reliability and health safety
3Object-affected harmful factors
If pyrolysis soot is used instead of industrial carbon black, then PAH content is reduced and health safety is improved, but manufacturing costs may increase due to material availability
Solution Approach 1:
The patent recovers carbon black from discarded tires through pyrolysis, transforming waste material into a useful filler. This recovery process not only reduces PAH content but also lowers manufacturing costs by utilizing free or low-cost waste material instead of purchasing expensive industrial carbon black, thus resolving the contradiction between health safety and manufacturing cost
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 use of pyrolysis soot in solid rubber tires provides a health and environmentally friendly alternative with reduced PAH content and comparable rolling resistance behavior, while also lowering manufacturing costs by utilizing recycled materials.
Implementation Method 1
it is obtained by thermal decomposition of organic materials at 550 to 800 °C in the absence of oxygen or by vacuum pyrolysis at comparatively low temperatures in the range of 500 °C
Data Source
Figure 1
AI summary
The invention relates to a solid rubber tire. The solid rubber tire according to the invention has in at least one component 1 to 200 phr of at least one pyrolysis carbon black.