Antibacterial Artificial Turf Filling Material with Cooling Effect
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Solution Overview
Problem
Artificial turf filling materials fail to inhibit bacterial growth and provide effective cooling, leading to health concerns and discomfort during activities, especially in hot weather.
Innovation Solution
An antibacterial artificial turf filling material comprising 20-35% styrene-based polymer, 8-20% olefin-based resin, 15-30% process oil, 10-30% inorganic filling material, and 2.1-8% antibacterial powder, with a specific heat of 1.80 J/g·k or more, coated with a PCM powder and titanium, aluminum, and graphene powders for enhanced cooling and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional filling materials (recycled soft plastics, hard carbon, thermosetting elastomers) are used to achieve safety and sports interactions, then shock absorption and rolling resistance are improved, but bacterial growth occurs due to bacteria-generated impurities
Solution Approach 1:
The patent incorporates copper sulfide powder, which has inherent antibacterial properties, into the filling material composition. This converts the harmful effect of bacterial growth into a beneficial antibacterial function, allowing the material to inhibit bacteria while maintaining its safety and sports interaction properties.
Solution Approach 2:
The patent creates a composite filling material by combining multiple components: styrene-based polymer (20-35%), olefin-based resin (8-20%), process oil (15-30%), inorganic filling material (10-30%), and copper sulfide powder (2.1-8%). This composite structure integrates the mechanical properties needed for safety with the antibacterial properties of copper sulfide.
2Ease of operation
If artificial turf is used to provide convenient maintenance compared to natural grass, then maintenance ease is improved, but heat storage occurs leading to extreme heat and discomfort for users
Solution Approach 1:
The patent modifies the thermal parameters of the filling material by incorporating copper sulfide powder, which changes the heat storage and thermal radiation characteristics. This allows the material to maintain its maintenance convenience while reducing heat storage and providing a cooling effect through altered thermal properties.
Solution Approach 2:
The patent converts the harmful heat storage effect into a beneficial cooling effect by using copper sulfide powder's ability to radiate heat. The material absorbs solar radiation during the day and radiates it back at night, providing a cooling sensation to users while maintaining the convenience of artificial turf.
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 material exhibits excellent antibacterial and cooling effects, ensuring a safe and pleasant activity experience on artificial turf by inhibiting bacterial growth and providing effective heat dissipation.
Implementation Method 1
an antibacterial powder, wherein the antibacterial powder is a mixed powder of a copper sulfide powder and a red clay powder
Implementation Method 2
a PCM (phase change material) powder is prepared so that the particle size of the power is 20 to 30 μm
Implementation Method 3
titanium, aluminum, and graphene powders are prepared as a cooling material powder so that the particle size of the powers is 20 to 30 μm
Data Source
AI summary
A filling material that is laid between artificial turf when constructing artificial turf on a floor of sports stadium or the like, specifically, an antibacterial artificial turf filling material comprising 20 to 35% by weight of a styrene-based polymer, 8 to 20% by weight of an olefin-based resin, 15 to 30% by weight of a process oil, 10 to 30% by weight of an inorganic filling material, and 2.1 to 8% by weight of an antibacterial powder, wherein the antibacterial powder is a mixed powder of a copper sulfide powder and a red clay powder, the antibacterial artificial turf filling material has by a specific heat of 1.80 J/g·k or more.