Antioxidant Supply Composition for Rapid Rubber Replenishment
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Solution Overview
Problem
Existing methods for replenishing antioxidants in rubber articles, such as tires, are inefficient and time-consuming, leading to decreased ozone resistance and potential surface discoloration or reduced adhesiveness.
Innovation Solution
An antioxidant supply composition comprising a base material with a solubility parameter (SP value) of 6.7 to 7.8 (cal/cm3)1/2, primarily containing a silicone-based polymer, is used to replenish rubber articles efficiently and reliably, with a contact time of 8 hours or more.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the amount of anti oxidant in the rubber article is increased to suppress decrease in ozone resistance, then ozone resistance is improved, but the surface turns brown and appearance worsens
Solution Approach 1:
The patent applies preliminary action by pre-mixing the anti oxidant with a base material (silicone oil or silicone emulsion) before application to the rubber article. This pre-mixed composition is then applied and allowed to permeate into the rubber, delivering the anti oxidant in a controlled manner that prevents surface discoloration while ensuring sufficient ozone resistance maintenance.
2Reliability
If anti oxidant is added to rubber article after use to suppress decrease in ozone resistance, then ozone resistance is improved, but the process takes a long time
Solution Approach 1:
The patent applies parameter changes by formulating the anti oxidant in a specific base material with controlled viscosity and permeation properties. The silicone-based base material parameters are optimized to enable rapid permeation into the rubber article, reducing the replenishment time from days to hours while maintaining effective anti oxidant delivery.
3Reliability
If adhesive material for aging prevention is attached to rubber article for long time to suppress aging, then ozone resistance is improved, but the process is time-consuming
Solution Approach 1:
The patent extracts the essential function of long-term adhesive materials by using a permeable silicone-based composition that delivers anti oxidant rapidly through permeation. This eliminates the need for prolonged attachment of adhesive materials, achieving the same ozone protection in much shorter time.
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 antioxidant supply composition effectively replenishes rubber articles without prolonged contact time, maintaining ozone resistance and preventing surface discoloration.
Implementation Method 1
a base material and 5 mass% or more of an amine-based anti oxidant, wherein a solubility parameter (SP value) of the base material is 6.7 (cal/cm3)1/2
Data Source
Figure 1
AI summary
Provided is an anti oxidant supply composition that enables replenishment of a rubber article with anti oxidant without taking a long time. An anti oxidant supply composition comprises: a base material and 5 mass% or more of anti oxidant, wherein a solubility parameter (SP value) of the base material is less than 7.8 (cal/cm3)1/2.