Fluoropolyether Adhesive Rapid Curing via Organohydrogensiloxane
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Solution Overview
Problem
Conventional heat-curable fluoropolyether-based adhesive compositions require high temperatures and long curing times, making them unsuitable for rapid manufacturing processes, particularly in the production of electric and electronic components where productivity and curing time are critical.
Innovation Solution
A heat-curable fluoropolyether-based adhesive composition incorporating a linear polyfluoro compound, an alicyclic epoxy group-containing and fluorine-containing organohydrogensiloxane, and a platinum group metal catalyst, which allows for rapid curing and adhesion to various base materials such as metals, ceramics, and plastics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional heat-curable fluoropolyether-based adhesive compositions are used, then excellent heat resistance and chemical resistance are achieved, but curing time is excessively long (not shorter than an hour at 150°C or higher)
Solution Approach 1:
The patent changes the chemical parameters of the adhesive composition by introducing a specific organohydrogensiloxane component with SiH groups that reacts rapidly with the polyfluoro compound. This parameter change enables the curing reaction to proceed much faster while maintaining the thermal and chemical resistance properties of the fluoropolyether-based system.
Solution Approach 2:
The patent creates a composite adhesive system by combining the linear polyfluoro compound (providing heat and chemical resistance) with the organohydrogensiloxane (providing rapid curing through SiH group reactivity). This composite approach allows both the durability and the fast processing characteristics to coexist in the final cured adhesive.
2Ease of manufacture
If conventional self-adhesive compositions are used, then adhesion to metal and plastic base materials is achieved, but manufacturing time and takt time are excessively long
Solution Approach 1:
The patent modifies the curing kinetics parameter by incorporating the organohydrogensiloxane component, which undergoes rapid crosslinking reaction. This parameter change reduces the manufacturing time while preserving the self-adhesive properties to metal and plastic substrates through the chemical composition design.
3Strength
If high curing temperature and long curing time are applied, then complete curing and strong adhesion are achieved, but productivity and manufacturing efficiency are reduced
Solution Approach 1:
The patent changes the reaction kinetics parameters by selecting an organohydrogensiloxane with high reactivity SiH groups that can achieve complete curing at lower temperatures and shorter times. This parameter optimization maintains strong adhesion strength while dramatically improving manufacturing efficiency and productivity.
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 enables rapid curing and strong adhesion to diverse materials, significantly reducing manufacturing time and improving productivity in the production of electric and electronic components, including vehicular components, while maintaining excellent properties like heat resistance and chemical resistance.
Implementation Method 1
a platinum group metal catalyst, which allows for rapid curing
Implementation Method 2
an alicyclic epoxy group-containing and fluorine-containing organohydrogensiloxane having... at least one silicon atom-bonded hydrogen atom (SiH group)... having at least two alkenyl groups in one molecule
Data Source
AI summary
Provided are a heat-curable fluoropolyether-based adhesive composition capable of being cured and adhering to various kinds of base materials made of, for example, a metal, ceramic and/or plastic in a short period of time; and an electric/electronic component employing the same. The composition is a heat-curable fluoropolyether-based adhesive composition having, as an adhesion imparting agent, an alicyclic epoxy group-containing and fluorine-containing organohydrogensiloxane having in one molecule: a monovalent perfluoroalkyl or perfluorooxyalkyl group(s), or a divalent perfluoroalkylene or perfluorooxyalkylene group(s); and at least one silicon atom-bonded hydrogen atom (SiH group).