Curable Composition with Kaolinite and Quartz for Water-Resistant Adhesiveness
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Solution Overview
Problem
Current curable compositions with reactive silicon groups face challenges in achieving high environmental compatibility and water-resistant adhesiveness, especially when bonding to low-polar and porous substrates, and there is a need for alternatives to urethane-based adhesives due to health and environmental concerns.
Innovation Solution
A curable composition comprising an organic polymer with reactive silicon groups and a bound substance of kaolinite and quartz, which provides a cured product with high water-resistant adhesiveness and strength, while being environmentally compatible.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional urethane-based adhesives are used for woodworking, then adhesiveness is achieved, but harmful isocyanate groups are present that adversely influence human health and environment
Solution Approach 1:
The invention changes the chemical composition parameters by using organic polymers with reactive silicon groups instead of isocyanate-based polymers. This substitution maintains the crosslinking mechanism (through siloxane bond formation) while eliminating harmful isocyanate groups, thus resolving the contradiction between safety and adhesiveness
Solution Approach 2:
The invention creates a composite adhesive system combining organic polymers with reactive silicon groups and inorganic fillers (such as colloidal silica). This composite approach enhances water-resistant adhesiveness while maintaining environmental compatibility by replacing harmful conventional adhesives
2Object-affected harmful factors
If organic polymers with reactive silicon groups are used to improve environmental compatibility, then water-resistant adhesiveness to low-polar and porous substrates is insufficient
Solution Approach 1:
The invention optimizes parameters including the type of reactive silicon groups (hydrolyzable silyl groups), molecular weight and structure of organic polymers, and addition of inorganic fillers. These parameter adjustments enhance water-resistant adhesiveness to low-polar and porous substrates while preserving environmental compatibility
Solution Approach 2:
The invention develops composite materials combining organic polymers with reactive silicon groups and inorganic components (colloidal silica, bound substances of kaolinite and quartz). This composite structure improves water-resistant adhesiveness and strength while maintaining environmental compatibility
3Strength
If epoxy resin is added to curable composition to improve strength and water-resistant adhesiveness, then environmental compatibility is compromised due to adverse health influences
Solution Approach 1:
The invention changes the chemical composition by substituting epoxy resin with organic polymers containing reactive silicon groups. The silane crosslinking mechanism provides comparable or superior water-resistant adhesiveness and strength while eliminating the harmful effects of epoxy resin, thus resolving the contradiction between strength and environmental compatibility
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 cures at room temperature, offering a strong and water-resistant adhesive bond to various substrates, including low-polar and porous materials, and is free from harmful chemicals, enhancing environmental compatibility.
Implementation Method 1
an organic polymer containing at least one reactive silicon group in a molecule is crosslinked by the formation of a siloxane bond, which is accompanied by hydrolysis and the like of a silyl group due to moisture
Implementation Method 2
crosslinked by the formation of a siloxane bond
Implementation Method 3
a composition containing at least an organic polymer containing a reactive silicon group and a bound substance of kaolinite and quartz can provide a cured product having a sufficiently high water-resistant adhesiveness
Data Source
AI summary
The present invention relates to a curable composition containing an organic polymer containing a reactive silicon group (A), and a bound substance of kaolinite and quartz (B). The curable composition of the present invention has high environmental compatibility and cures at room temperature, and a cured product obtained therefrom affords a cured product having high water-resistant adhesiveness, preferably a cured product having high strength and high water-resistant adhesiveness.