Curable Resin Composition for Transparent Thixotropy Control
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Solution Overview
Problem
Conventional methods to increase thixotropy in resins, such as adding fillers or compounds with poor compatibility, result in reduced light transmittance and cloudiness, compromising transparency and workability.
Innovation Solution
A resin composition comprising a polymer with multiple (meth)acryloyl groups, silica powder surface-treated with alkyl silane, and boric acid or borate ester, which imparts thixotropy without affecting transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a filler is added to increase thixotropy, then the flowability control is improved, but the light transmittance is reduced
Solution Approach 1:
The patent introduces a silane coupling agent as an intermediary substance that mediates between the filler particles and the binder resin. This coupling agent creates a compatible interface that allows filler to provide thixotropy while maintaining resin transparency, resolving the contradiction between flowability control and light transmittance
Solution Approach 2:
The patent changes the surface parameters of filler particles through silane treatment, modifying their surface chemistry to be compatible with the binder resin. This parameter change allows the filler to provide rheological control without causing light scattering, thus maintaining transparency while improving thixotropy
2Ease of operation
If a compound with poor compatibility is added to increase thixotropy, then the flowability control is improved, but the resin becomes cloudy
Solution Approach 1:
The silane coupling agent serves as an intermediary that bridges the incompatible compound and the binder resin, creating a compatible system. This allows the addition of thixotropic agents without causing cloudiness, as the silane ensures uniform dispersion and compatibility throughout the resin matrix
Solution Approach 2:
The patent creates a composite system combining the binder resin, thixotropic compound, and silane coupling agent. This composite approach allows the integration of multiple functions (transparency, thixotropy, compatibility) that cannot be achieved by a single material, resolving the contradiction between cloudiness and flowability control
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 resin composition maintains transparency while enhancing applicability and workability by adjusting thixotropy effectively, allowing for controlled viscosity in high and low shear rate states.
Implementation Method 1
it is an essential technique in using adhesives and sealants to increase the thixotropy to adjust the flowability, making it possible to apply the agent onto a vertical surface and preventing the agent from flowing into unnecessary areas
Implementation Method 2
a polymer having two or more (meth)acryloyl groups in one molecule thereof
Data Source
AI summary
The present invention relates to a curable resin composition, etc., having an excellent transparency, applicability, and workability. Specifically, the present invention relates to a resin composition, etc., including: (A) a polymer having two or more (meth)acryloyl groups in one molecule thereof; (B) a silica powder surface-treated with an alkyl silane; and (C) boric acid or a borate ester.