Aqueous Polymer Emulsion for Vehicle Vibration Damping
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Solution Overview
Problem
Current vibration damping technologies for vehicles and machinery are either labor-intensive, expensive, or contain hazardous volatile organic compounds, and existing aqueous emulsions lack effective damping performance, water resistance, and toughness.
Innovation Solution
Development of aqueous polymer emulsions through emulsion polymerization using low molecular weight copolymers and support resins, which are free of surfactants, to create a formulation that can be applied selectively to damp mechanical vibrations, offering improved damping performance and water resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional vibration damping technologies are used, then damping performance is achieved, but labor intensity and cost increase
Solution Approach 1:
The patent replaces traditional mechanical damping systems (requiring manual application of damping materials) with a liquid-applied polymer emulsion system that can be sprayed or rolled onto surfaces, automatically forming a damping coating without intensive manual labor
Solution Approach 2:
The liquid-applied polymer emulsion can be delivered through pneumatic spray systems or hydraulic application methods, enabling efficient, low-labor application of damping material across large surfaces compared to traditional manual methods
2Reliability
If traditional vibration damping materials are used, then damping effect is achieved, but hazardous volatile organic compounds are released
Solution Approach 1:
The patent changes the chemical composition parameters of the damping material from solvent-based polymers containing volatile organic compounds to a water-based polymer emulsion system, eliminating hazardous VOC emissions while maintaining damping performance
Solution Approach 2:
The patent uses a composite polymer emulsion formulation combining multiple polymer components and additives in a water-based matrix to achieve both environmental safety (no VOCs) and effective damping performance
3Object-generated harmful factors
If existing aqueous emulsions are used, then low VOC is achieved, but damping performance and water resistance are insufficient
Solution Approach 1:
The patent employs a composite polymer emulsion containing multiple polymer components (including acrylic polymers and other copolymers) with specific glass transition temperatures, combined with fillers and additives to achieve both low VOC and superior damping performance
Solution Approach 2:
The patent optimizes parameters including polymer molecular weight distribution, glass transition temperature range, emulsion particle size, and crosslinking density to enhance both damping performance and water resistance while maintaining low VOC content
4Object-generated harmful factors
If existing aqueous emulsions are used, then low VOC is achieved, but water resistance and toughness are insufficient
Solution Approach 1:
The patent modifies the emulsion parameters including adding crosslinking agents, adjusting polymer hydrophobicity, and optimizing emulsion stability to dramatically improve water resistance while maintaining the low VOC formulation
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 solution provides a cost-effective, low VOC, and highly effective damping material with a broad damping temperature profile, reducing material waste and weight, while maintaining fuel efficiency and enhancing durability.
Implementation Method 1
an aqueous polymer emulsion prepared by an emulsion polymerization reaction of an emulsion-polymerizable monomer and a support resin
Implementation Method 2
The damping formulation is configured to damp the mechanical vibration
Data Source
AI summary
A method of damping mechanical vibration includes applying on a source of mechanical vibration a formulation including an aqueous polymer emulsion prepared by an emulsion polymerization reaction of at least one emulsion-polymerizable monomer and a support resin.