Polyurethane Golf Ball Cover Cis-Trans Chain Extender Balance
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Solution Overview
Problem
Golf balls with soft covers excel in spin performance but lack abrasion resistance, while those with hard covers have excellent abrasion resistance but poor spin performance, presenting a trade-off between the two properties.
Innovation Solution
A golf ball design incorporating a polyurethane cover with a polyisocyanate component, high-molecular weight polyol, and a mixture of cis-1,4-cyclohexane dimethanol and trans-1,4-cyclohexane dimethanol as a chain extender, optimizing the mixing ratio to balance spin performance and abrasion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a soft cover is used, then spin performance is improved, but abrasion resistance deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters of the polyurethane cover by using a specific mixture of cis-1,4-cyclohexane dimethanol and trans-1,4-cyclohexane dimethanol as chain extenders in a controlled ratio (30-70 mass%). This compositional parameter change allows the cover to achieve both softness for spin performance and sufficient durability for abrasion resistance, resolving the contradiction between these two properties.
Solution Approach 2:
The patent creates a composite polyurethane material by combining multiple components: polyisocyanate component, high-molecular-weight polyol component, and the specific mixture of cis and trans cyclohexane dimethanol chain extenders. This composite material structure enables the cover to exhibit both the softness needed for spin performance and the durability required for abrasion resistance, simultaneously addressing both contradictory requirements.
2Strength
If a hard cover is used, then abrasion resistance is improved, but spin performance deteriorates
Solution Approach 1:
The patent optimizes the physical and chemical parameters of the polyurethane cover through precise control of the cis-trans isomer ratio (30-70 mass%) and the selection of high-molecular-weight polyol components. These parameter changes enable the cover to achieve an optimal balance between hardness for abrasion resistance and softness for spin performance, resolving the contradiction between these opposing requirements.
Solution Approach 2:
The patent develops a composite polyurethane system that integrates polyisocyanate, high-molecular-weight polyol, and a specific ratio of cis and trans cyclohexane dimethanol chain extenders. This composite material structure allows the cover to simultaneously possess the durability needed for abrasion resistance and the flexibility required for spin performance, effectively resolving the contradiction between these two properties.
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 solution achieves a higher level of balance between spin performance and abrasion resistance, enhancing the overall performance of the golf ball by using a specific ratio of cis-1,4-cyclohexane dimethanol and trans-1,4-cyclohexane dimethanol in the polyurethane cover.
Implementation Method 1
the polyurethane has, as a constituting component, a polyisocyanate component, a high-molecular weight polyol component, and a mixture of cis-1,4-cyclohexane dimethanol and trans-1,4-cyclohexane dimethanol as a chain extender
Data Source
AI summary
A golf ball which has excellent abrasion-resistance and spin performance is provided. The golf ball of the present invention includes a core and a cover covering the core and containing polyurethane as a resin component, wherein the polyurethane has, as a constituting component, a polyisocyanate component, a high-molecular weight polyol component, and a mixture of cis-1,4-cyclohexane dimethanol and trans-1,4-cyclohexane dimethanol as a chain extender.