Hollow Particle Shell Composition for Stable Low Dielectric Loss
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Solution Overview
Problem
Hollow particles used to reduce dielectric dissipation factor in materials suffer from performance instability, particularly in high humidity or long-term storage, and ion migration issues in electronic circuits.
Innovation Solution
Adjusting the content of non-crosslinkable monomer units in the shell of hollow particles to within a specific range (15% to 60% by mass) and optimizing polymerization conditions to achieve a dielectric dissipation factor of 5.00 × 10 -4< or less at 10 GHz, while improving performance stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If hollow particles are added to insulation materials to decrease dielectric dissipation factor, then the dielectric dissipation factor decreases, but performance stability deteriorates in high humidity or long-term storage
Solution Approach 1:
The invention changes the chemical composition parameters of the shell by controlling the content of non-crosslinkable monomer units (15-60% by mass) and crosslinkable monomer units. This parameter optimization achieves both low dielectric dissipation factor (5.00×10^-4 or less) and high performance stability by balancing the monomer composition to prevent ion migration while maintaining dielectric properties.
Solution Approach 2:
The invention creates a composite polymer structure in the shell by combining polymers from non-crosslinkable monomers (providing dielectric properties) and crosslinkable monomers (providing stability). This composite material approach allows the shell to simultaneously achieve low dielectric dissipation and resistance to humidity-induced degradation through the synergistic effect of different polymer components.
2Weight of moving object
If hollow particles with polymer shell are used, then weight reduction is achieved, but ion migration occurs in electronic circuit boards
Solution Approach 1:
The invention changes the chemical parameters of the shell by optimizing the ratio of non-crosslinkable to crosslinkable monomer units. This parameter control creates a polymer structure with sufficient crosslinking density to prevent ion migration pathways while maintaining the hollow particle's lightweight characteristics.
Solution Approach 2:
The invention converts the potential harm of polymer shells (which can cause ion migration) into a benefit by using controlled crosslinking. The crosslinked polymer network, which might otherwise create migration pathways, is transformed into a barrier structure that blocks ion migration while maintaining the weight reduction advantage of hollow particles.
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 results in hollow particles with a lower dielectric dissipation factor and enhanced performance stability, reducing the likelihood of property deterioration and ion migration in electronic circuits.
Implementation Method 1
hollow particles...for the purpose of weight reduction, heat insulation, a decrease in permittivity...decrease the dielectric dissipation factor of the insulation materials
Implementation Method 2
a shell which contains at least one kind of polymer...all monomer units forming a whole of the polymer contained in the shell
Data Source
Figure 1(1)~1(4)
AI summary
To provide hollow particles having a decreased dielectric dissipation factor and improved performance stability. Hollow particles comprising a shell, which contains at least one kind of polymer, and a hollow portion surrounded by the shell, wherein a content of a non-crosslinkable monomer unit in 100% by mass of all monomer units forming a whole of the polymer contained in the shell, is 15% by mass or more and 60% by mass or less, and wherein the hollow particles have a dielectric dissipation factor of 5.00 × 10-4 or less at a frequency of 10 GHz.