Vibration Damping Polymer Emulsion Composition

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional copolymer emulsions for vibration damping materials do not provide sufficient vibration damping performance for practical applications, necessitating the development of a composition with enhanced vibration damping properties.

Innovation Solution

A polymer emulsion composition incorporating a vibration damping modifier with 7 or more carbon atoms, a boiling point of 190°C or higher, and at least two ether or ester groups, which improves the vibration damping properties of the coating without degrading performance across a wide temperature range.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional copolymer emulsion is used for vibration damping materials, then the coating can be formed and applied, but the vibration damping performance is insufficient for practical use

Engineering Contradiction:

Improvevibration damping performanceVSAvoidcoating formation

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The invention changes the chemical composition parameters of the polymer emulsion by incorporating specific monomers (acrylic acid, methacrylic acid, and their esters) in controlled proportions. The glass transition temperature (Tg) is adjusted to a specific range (-50°C to 0°C) to optimize vibration damping performance while maintaining coating formability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite polymer system by copolymerizing multiple monomers together. The resulting copolymer emulsion combines the properties of different monomer units to achieve both adequate coating formation and improved vibration damping performance that neither component could provide alone

Inventive Principle:

Principle #40Composite materials

2Temperature

If the vibration damping coating material is applied to high temperature environments, then the coating can provide vibration damping, but the coating degrades and loses effectiveness

Engineering Contradiction:

Improvehigh temperature resistanceVSAvoidcoating effectiveness

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

The invention optimizes the glass transition temperature parameter of the copolymer to a specific range (-50°C to 0°C) that provides thermal stability. The controlled monomer composition and molecular weight distribution enhance the coating's resistance to thermal degradation while maintaining vibration damping effectiveness at elevated temperatures

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS9626952B2Emulsion composition for vibration damping materials

Publication Date: 2017.04.18 NIPPON SHOKUBAI CO LTD

AI summary

The present invention aims to provide a composition for vibration damping materials which provides excellent vibration damping property. The present invention relates to an emulsion composition for vibration damping materials including: a vibration damping modifier including a compound that has 7 or more carbon atoms, a boiling point of 190° C. or higher, and at least two ether groups or at least two ester groups in the molecule; and a polymer emulsion.