Tire Puncture Sealant Formulation for Storage Stability
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Solution Overview
Problem
Conventional tire puncture sealants deteriorate in sealing and storage performance due to tackifiers and resin-based adhesives when exposed to high temperatures and vibrations, leading to unsatisfactory sealing over time.
Innovation Solution
A tire puncture sealant comprising natural rubber latex and a copolymer resin emulsion of versatic acid and vinyl alcohol, with a specific solid content ratio, combined with non-ionic and anionic surfactants, and an antifreezing agent, which suppresses temperature increase to maintain performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional tire puncture sealants containing tackifiers and resin-based adhesives are used, then initial sealing performance is achieved, but sealing performance deteriorates after long-term storage under high temperature and vibration conditions
Solution Approach 1:
The patent removes tackifiers and resin-based adhesives from the sealant formulation, which are identified as the causes of performance deterioration during storage. This extraction of harmful components resolves the contradiction by eliminating the source of instability while maintaining sealing functionality through alternative ingredients.
Solution Approach 2:
The patent changes the chemical composition parameters of the sealant by replacing conventional tackifiers and resin-based adhesives with specific alternative ingredients. This parameter change in formulation chemistry maintains initial sealing performance while improving long-term storage stability under harsh conditions.
2Reliability
If the sealant is stored under harsh temperature conditions for long periods, then storage stability is tested, but viscosity increases causing sealing performance to deteriorate
Solution Approach 1:
The patent extracts and removes resin-based adhesives and tackifiers from the formulation, which are responsible for viscosity increase during high-temperature storage. This elimination of unstable components prevents the viscosity deterioration that would otherwise occur under harsh thermal conditions.
Solution Approach 2:
The patent employs a composite formulation combining specific ingredients that are individually stable under high temperature conditions. This composite approach creates a sealant that maintains consistent viscosity and sealing performance even after prolonged exposure to harsh storage temperatures.
3Ease of operation
If the sealant contains conventional resin-based adhesives and tackifiers, then initial application effectiveness is achieved, but storage performance deteriorates over time
Solution Approach 1:
The patent removes resin-based adhesives and tackifiers from the formulation, identifying these components as the source of storage instability. This extraction maintains sealing effectiveness through alternative mechanisms while eliminating the composition changes that occur during storage.
Solution Approach 2:
The patent changes the formulation parameters by replacing conventional adhesive and tackifier components with chemically stable alternatives. This parameter change in ingredient selection preserves sealing effectiveness while improving compositional stability during long-term storage.
Data Source
AI summary
A tire puncture sealant having both excellent sealing performance and excellent storage performance, specifically a tire puncture sealant containing a natural rubber latex (A) and a VEVA copolymer resin emulsion (B), wherein the solid content mass of the natural rubber latex (A)/solid content mass of the VEVA copolymer resin emulsion (B) is between 80/20 and 15/85.