Silicone Table Tennis Rubber Composition for Humidity-Stable Ball Response
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Table tennis rubber sheets made of silicone rubber exhibit decreased ball-hitting performance in high humidity environments due to hydrosilyl group interactions with water molecules, leading to reduced deformation recovery rates.
Innovation Solution
A table tennis rubber sheet comprising a crosslinked silicone rubber with a hydrosilyl group content of 5.0×10 -4< mol/g or less, which minimizes hydrogen bond formation with water, ensuring rapid deformation recovery and stable ball-hitting performance across varying environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the rubber sheet is made soft to increase flexibility and deformation amount, then the amount of rotation increases, but the recovery rate from deformation decreases and ball speed decreases
Solution Approach 1:
The patent applies parameter changes by precisely controlling the hydrosilyl group content in the crosslinked silicone rubber to 5.0×10^-4 mol/g or less. This chemical parameter control optimizes the balance between flexibility and recovery rate, allowing the rubber to maintain both softness for rotation and rapid recovery for ball speed without the trade-off described in the contradiction.
2Reliability
If silicone rubber with hydrosilyl groups is used to achieve crosslinking, then the rubber sheet shows good ball-hitting performance in dry environments, but the performance decreases in high humidity environments due to moisture absorption
Solution Approach 1:
The patent changes the chemical composition parameter by limiting the hydrosilyl group content to 5.0×10^-4 mol/g or less in the crosslinked silicone rubber. This parameter optimization reduces the rubber's affinity for water molecules, minimizing hydrogen bond formation with moisture and thereby maintaining stable ball-hitting performance across different humidity conditions.
Solution Approach 2:
The patent uses composite materials by combining crosslinked silicone rubber with controlled hydrosilyl group content with specific physical properties. The crosslinked structure provides mechanical strength and elasticity, while the controlled low hydrosilyl content reduces moisture sensitivity, creating a composite material system that balances performance and environmental stability.
3Stability of the object's composition
If the hydrosilyl group content is increased to enhance crosslinking density, then the structural stability improves, but the interaction with water molecules increases and deformation recovery rate decreases
Solution Approach 1:
The patent optimizes the crosslinking density by precisely controlling the hydrosilyl group content parameter to 5.0×10^-4 mol/g or less. This optimal parameter setting achieves sufficient crosslinking for structural stability while preventing excessive hydrogen bonding with water molecules, thereby maintaining rapid deformation recovery rate.
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 rubber sheet maintains excellent ball-hitting performance regardless of temperature and humidity levels by preventing hydrosilyl group-water interactions, thus enhancing deformation recovery and stability.
Implementation Method 1
hydrosilyl group content in the crosslinked silicone rubber is 5.0×10 -4 < mol/g or less, which minimizes hydrogen bond formation with water
Implementation Method 2
the rubber sheet is deformed due to the contact thereof with the ball, and the force of the deformation returning to the original state imparts rotation and speed to the ball
Implementation Method 3
the viscoelastic properties of the rubber constituting the rubber sheet are important
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3~4
AI summary
A table tennis rubber sheet which exhibits stable ball-hitting performance regardless of temperature fluctuations and which, even in environments where the table tennis rubber sheet is apt to comprise moisture, has the excellent ball-hitting performance. The table tennis rubber sheet at least comprises an elastomer sheet, wherein the elastomer sheet comprises a crosslinked silicone rubber as a binder, a hydrosilyl group content in the crosslinked silicone rubber is 5.0×10-4 mol/g or less.