Antiadhesive Rubber Coating Composition With Stable Liquid Transfer
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Solution Overview
Problem
Conventional antiadhesive compositions for unvulcanized rubber face challenges in achieving a balance between anti-adhesion properties, liquid transferability, and stability, often compromising one or more of these properties due to viscosity issues or instability.
Innovation Solution
A liquid antiadhesive composition comprising specific ratios of water-soluble polymers, metal soaps, surfactants, and thixotropic polymers, formulated to maintain excellent anti-adhesion properties while ensuring stability and transferability, with components like polyvinyl alcohol, calcium stearate, and xanthan gum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the viscosity of liquid antiadhesive composition is increased to improve adhesion, then the adhesion of antiadhesive is improved, but the liquid transferability (handleability) deteriorates due to decreased fluidity
Solution Approach 1:
The patent applies parameter changes by carefully controlling the viscosity of the liquid antiadhesive composition within the range of 10 to 1000 mPa·s at 20°C, and by precisely formulating the content ratios of water-soluble polymers (0.1-10 mass%) and lubricants (1-50 mass%) to achieve optimal balance between adhesion and fluidity
Solution Approach 2:
The patent uses composite materials by combining water-soluble polymers (such as CMC, PVA, polyacrylic acid) with lubricants (such as calcium stearate, zinc stearate, magnesium stearate) to create a composition that simultaneously provides adhesion enhancement through polymer viscosity and antiadhesion properties through lubricant content, achieving both good adhesion and liquid transferability
2Ease of operation
If the amount of water-soluble polymer is reduced to lower the viscosity of liquid antiadhesive composition, then the liquid transferability is improved, but the stability of the composition deteriorates
Solution Approach 1:
The patent applies parameter changes by establishing the optimal content range of water-soluble polymers at 0.1-10 mass% of the total composition, which provides sufficient viscosity for stability while maintaining adequate fluidity for liquid transferability, avoiding both excessive viscosity and insufficient stability
3Stability of the object's composition
If conventional compositions use water-soluble polymer and lubricant to improve adhesion, then the adhesion is improved, but it becomes difficult to achieve both liquid transferability and stability simultaneously
Solution Approach 1:
The patent applies parameter changes by defining specific content ranges for water-soluble polymers (0.1-10 mass%) and lubricants (1-50 mass%), and by controlling viscosity within 10-1000 mPa·s, which creates a compositional parameter space that simultaneously achieves adhesion, liquid transferability, and stability
Solution Approach 2:
The patent uses composite materials by combining water-soluble polymers that provide adhesion and viscosity with lubricants that provide antiadhesion properties, creating a synergistic composition that achieves all three desired properties: adhesion, liquid transferability, and stability
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 composition achieves a balanced performance in anti-adhesion, stability, and transferability, with improved film formation, reduced scattering, and enhanced handling properties, while maintaining effective adhesion to unvulcanized rubber surfaces.
Implementation Method 1
water-soluble polymers (such as sodium alginate, CMC, sodium polyacrylate, and PVA), water-soluble polysaccharides (xanthan gum), and the like are blended together to increase the viscosity of a water-diluted antiadhesive and improve the adhesion of the antiadhesive with respect to the surface of rubber
Implementation Method 2
a mass ratio (A)/(D) of the following component (A) to the following component (D) is 5 to 500. (D) One or more kinds of compounds selected from water-soluble polymers in which thixotropic index (2 rpm/20 rpm) of 2 mass % aqueous solution at 20° C. is 4.0 or more
Data Source
AI summary
The disclosure provides a liquid antiadhesive composition for unvulcanized rubber having excellent anti-adhesion properties and an excellent balance between liquid transferability and stability.The liquid antiadhesive composition for unvulcanized rubber of the disclosure includes: components (A) to (D) below; and water, in which a mass ratio (A)/(D) of the following component (A) to the following component (D) is 5 to 500.(A): Water-soluble polymer other than component (D)(B): Metal soap(C): Surfactant(D): One or more kinds of compounds selected from water-soluble polymers in which thixotropic index (2 rpm/20 rpm) of 2 mass % aqueous solution at 20° C. is 4.0 or more.