Antibacterial Silicone Rubber Composition With Breathable Textile Performance
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Solution Overview
Problem
Existing silicone rubber materials used in home textiles suffer from poor antibacterial properties, limited air permeability, and mechanical durability, leading to issues such as bacterial growth, odor, and material degradation over time.
Innovation Solution
A preparation method involving the grafting of a double quaternary ammonium salt-type benzoic acid into silicone rubber, combined with a polyurethane elastomer and a vulcanizing agent, to create an air-permeable and antibacterial silicone rubber material through a series of chemical reactions and vulcanization processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional silicone rubber is used in home textiles, then the material has good chemical stability and flexibility, but it has poor antibacterial properties and allows bacterial growth causing mold and odor
Solution Approach 1:
The patent creates a composite material by grafting quaternary ammonium salt functional groups onto silicone rubber polymer chains. This combines the excellent flexibility and chemical stability of silicone rubber with the strong antibacterial properties of quaternary ammonium salts, resolving the contradiction between maintaining material performance and achieving antibacterial function.
Solution Approach 2:
The patent modifies the chemical structure of silicone rubber by introducing quaternary ammonium salt functional groups through grafting reactions. This changes the chemical parameters of the material, transforming it from having poor antibacterial properties to having excellent antibacterial activity while maintaining its base properties.
2Duration of action of stationary object
If silicone rubber material is used for long-term home textile applications, then the material provides durability, but it is prone to aging and has poor mechanical properties over time
Solution Approach 1:
The patent blends silicone rubber with polyurethane elastomer to create a composite material system. This combination enhances the mechanical properties and aging resistance of the material, allowing it to maintain strength and flexibility over extended periods of use in home textiles.
3Reliability
If quaternary ammonium salt is added to silicone rubber to improve antibacterial properties, then the antibacterial effect is enhanced, but the mechanical properties deteriorate
Solution Approach 1:
The patent optimizes the grafting degree and functional group content to achieve the right balance. By controlling the amount of quaternary ammonium salt introduced and the grafting conditions, the material achieves effective antibacterial activity while maintaining acceptable mechanical properties through parameter optimization.
Solution Approach 2:
The patent uses a composite system combining silicone rubber base material with grafted quaternary ammonium salt functional groups and polyurethane elastomer. This multi-component composite structure distributes the functional requirements, allowing antibacterial properties to be enhanced without completely compromising mechanical strength.
4Ease of operation
If silicone rubber material is used in home textiles, then the material provides flexibility and comfort, but it has limited air permeability
Solution Approach 1:
The patent introduces a porous structure into the silicone rubber material through controlled foaming or phase separation during processing. This creates interconnected voids that allow air and moisture vapor to pass through while maintaining the material's flexibility and comfort properties, thus improving breathability without sacrificing softness.
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 resulting silicone rubber material exhibits excellent antibacterial properties, enhanced air permeability, and improved mechanical strength, effectively inhibiting bacterial growth and maintaining material integrity.
Implementation Method 1
The activated silicone rubber and the double quaternary ammonium salt-type benzoic acid are subjected to an esterification reaction under the catalysis of p-toluenesulfonic acid to obtain the double quaternary ammonium salt-grafted silicone rubber
Implementation Method 2
the silicone rubber has a greater air permeability
Implementation Method 3
An quaternary ammonium salt is a compound formed by substituting all hydrogens in ammonium ions with hydrocarbon groups, and is widely applied to the fields such as bactericides
Implementation Method 4
performing compression molding in a flat vulcanizing machine with a pressure of 10-12 MPa to obtain the air-permeable and antibacterial silicone rubber material
Data Source
Figure 1
AI summary
The present disclosure relates to the technical field of silicone rubbers, and discloses a preparation method for an air-permeable and antibacterial silicone rubber material and an application thereof in home textiles. Activated silicone rubber and double quaternary ammonium salt-type benzoic acid are subjected to an esterification reaction under the catalysis of p-toluenesulfonic acid to obtain double quaternary ammonium salt-grafted silicone rubber. The double quaternary ammonium salt-grafted silicone rubber is blended with silicone rubber and then applied to home textiles, wherein the quaternary ammonium salt component can destroy cellular enzymes in bacteria and has an antibacterial effect, and the silicon-oxygen-silicon in the silicone rubber not only has excellent air permeability, but also has excellent mechanical properties. Finally, the home textile material with excellent antibacterial properties, air permeability and mechanical properties is obtained.