Elastomer-Coated Filler Resin Composition for Vibration Damping
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Solution Overview
Problem
Current vibration-damping materials for household appliances and automobiles do not achieve sufficient vibration-damping performance, despite advancements in resin compositions and filler materials.
Innovation Solution
A molded article comprising a resin composition of thermoplastic resin, epoxy-group-containing olefin-based elastomer, and inorganic filler, where the inorganic filler is coated with the olefin-based elastomer, and the components are melt-kneaded to enhance vibration-damping properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional vibration-damping materials are used, then basic vibration reduction is achieved, but sufficient vibration-damping performance is not achieved
Solution Approach 1:
The invention uses a composite resin composition comprising a thermoplastic resin, an olefin-based elastomer with reactive functional groups, and inorganic filler. This composite structure achieves superior vibration-damping performance by combining the complementary properties of each component: the thermoplastic resin provides structural integrity, the elastomer contributes to vibration absorption, and the inorganic filler enhances the overall damping effect.
Solution Approach 2:
The olefin-based elastomer with reactive functional groups serves as an intermediary that coats the inorganic filler particles. This coating improves the interfacial adhesion between the filler and the thermoplastic resin matrix, ensuring effective stress transfer and maximizing the vibration-damping performance of the composite material.
2Reliability
If inorganic filler is added to enhance vibration-damping, then vibration-damping properties improve, but manufacturing complexity increases
Solution Approach 1:
The olefin-based elastomer with reactive functional groups is used to pre-coat the inorganic filler particles before compounding with the thermoplastic resin. This preliminary coating action simplifies the subsequent manufacturing process by improving filler dispersion and reducing agglomeration, making the extrusion and molding processes more straightforward despite the multi-component nature of the composition.
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 molded article with significantly improved vibration-damping effects compared to previous materials, as demonstrated by enhanced loss factor measurements across various frequency ranges.
Implementation Method 1
the inorganic filler C is coated with the olefin-based elastomer B
Implementation Method 2
melt-kneading an olefin-based elastomer B and an inorganic filler C, subsequently adding a thermoplastic resin A to the melt-kneaded olefin-based elastomer B and inorganic filler C, and performing further melt-kneading
Data Source
Figure 1~2
AI summary
It is an object of the present invention to provide a molded article which exhibits an improved vibration-damping effect compared to that previously achieved. The object of the present invention has been achieved by a vibration-damping molded article comprising a resin composition comprising at least a thermoplastic resin A, an olefin-based elastomer B having a reactive functional group, and an inorganic filler C, wherein the inorganic filler C is coated with the olefin-based elastomer B.