Anti-Flutter Adhesive Composition for Wide-Temperature Curing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current anti-flutter adhesives require high energy inputs for curing due to a narrow temperature range, which is inefficient and not aligned with energy-saving trends in automotive production.
Innovation Solution
An anti-flutter adhesive composition comprising ethylenically unsaturated rubber, PVC homopolymer and copolymer with specific K values, epoxy resin, epoxy curing agent, and organic peroxides with varying decomposition temperatures, allowing curing across a wide temperature range from 150 to 200°C.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the adhesive is cured at high temperature (170-200°C) to ensure proper curing, then the curing reliability is improved, but the energy consumption increases
Solution Approach 1:
The patent changes the chemical parameters of the curing system by using dual peroxide initiators with different decomposition temperatures (first peroxide: 125-180°C, second peroxide: <125°C) combined with epoxy resin and curing agent. This parameter change enables the adhesive to cure reliably across a wide temperature range (150-200°C), allowing flexible temperature selection that reduces energy consumption while maintaining curing reliability.
Solution Approach 2:
The patent creates a composite curing system combining multiple components: epoxy resin, epoxy curing agent, and two types of organic peroxides with complementary decomposition characteristics. This composite material approach ensures that at least one peroxide is always active within the 150-200°C range, providing reliable curing across the entire temperature spectrum while enabling energy-efficient lower temperature processing.
2Use of energy by moving object
If the adhesive is cured at lower temperature (150-170°C) to save energy, then the energy consumption is reduced, but the curing reliability may be compromised
Solution Approach 1:
The patent modifies the initiator system parameters by selecting organic peroxides with decomposition temperatures below 125°C (second peroxide) and 125-180°C (first peroxide). This parameter adjustment ensures that at least one peroxide remains chemically active at lower curing temperatures (150-170°C), maintaining curing reliability while enabling energy-saving lower temperature processing.
Solution Approach 2:
The composite curing system combines epoxy resin, curing agent, and dual peroxide initiators where the second peroxide (<125°C decomposition) ensures initiation capability at lower temperatures, while the first peroxide (125-180°C decomposition) provides backup and enhanced performance at higher temperatures within the 150-200°C range, ensuring reliable curing across the entire temperature spectrum.
3Manufacturing precision
If a narrow temperature range is used for curing to ensure consistent quality, then the manufacturing precision is improved, but the adaptability to different production lines is reduced
Solution Approach 1:
The patent changes the thermal parameters of the initiator system by using two peroxides with complementary decomposition temperature ranges. This parameter optimization ensures that the adhesive maintains consistent curing quality across a wide temperature range (150-200°C), enabling adaptation to different automotive production lines with varying baking windows while preserving manufacturing precision.
Solution Approach 2:
The dual peroxide system provides multi-functionality: the second peroxide (<125°C decomposition) enables effective curing at lower temperatures, while the first peroxide (125-180°C decomposition) ensures reliable curing at higher temperatures. This universal curing capability allows the same adhesive formulation to be used across different production lines with varying temperature specifications, enhancing adaptability without sacrificing quality consistency.
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 achieves excellent shear strength and good appearance on various substrates while reducing energy consumption by enabling curing at lower temperatures.
Implementation Method 1
at least one first organic peroxide having a decomposition temperature from 125 to 180° C. and at least one second organic peroxide having a decomposition temperature less than 125° C.
Implementation Method 2
The anti-flutter adhesive composition can be cured under a temperature ranging from 150 to 200° C.
Data Source
AI summary
This invention relates to an anti-flutter adhesive composition, comprising a) at least one ethylenically unsaturated polymer; b) at least one PVC homopolymer having a K value from 67 to 75; c) at least one PVC copolymer having a K value from 60 to 75; d) at least one epoxy resin; e) at least one epoxy curing agent; f) at least one first organic peroxide having a decomposition temperature from 125 to 180° C.; and g) at least one second organic peroxide having a decomposition temperature less than 125° C. The anti-flutter adhesive composition can be cured across a wide temperature and have excellent shear strength and good appearance after cured.