Epoxy Adhering Composition for Inlay Substrate Heat Dissipation

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Solution Overview

Problem

Existing methods for manufacturing inlay substrates with heat dissipation materials are costly and prone to adhesion issues, leading to heat dissipation material falling out due to lack of pressure.

Innovation Solution

An inlay substrate with a heat dissipation material coated in an adhering composition containing epoxy resin, a curing agent, and inorganic fillers, which provides stable adhesion by ensuring the material adheres effectively to the substrate during the manufacturing process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual pressure application method is used to fix heat dissipation material, then adhesion can be achieved, but manufacturing cost increases and adhesion stability is poor

Engineering Contradiction:
Improveadhesion stabilityVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

An adhering composition is introduced as an intermediary substance between the heat dissipation material and the substrate. This composition includes a resin component, curing agent, and inorganic filler, forming a adhesive layer that chemically bonds both surfaces together, replacing the need for manual pressure application and providing stable adhesion.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The adhering composition undergoes parameter changes through curing process. The resin component transitions from a liquid or semi-liquid state to a solid state through curing, changing its physical properties from flowable to rigid, thereby providing strong and stable adhesion between the heat dissipation material and substrate.

Inventive Principle:
Principle #35Parameter changes

2Manufacturing precision

If manual work method is used for inserting heat dissipation material, then positioning can be achieved, but productivity decreases and cost increases

Engineering Contradiction:
Improvepositioning accuracyVSAvoidmanufacturing efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The adhering composition is applied to the heat dissipation material or substrate surface in advance, before the actual insertion process. This preliminary coating ensures that when the material is inserted, adhesion immediately begins, allowing for automated insertion processes while maintaining positioning accuracy and improving productivity.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If pressure is not applied sufficiently during fixation, then manufacturing process is simple, but heat dissipation material falls out due to poor adhesion

Engineering Contradiction:
Improveadhesion strengthVSAvoidfixation process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The mechanical pressure application system is replaced with a chemical bonding system. Instead of relying on continuous mechanical pressure to maintain adhesion, the adhering composition creates chemical bonds between surfaces, eliminating the need for complex pressure application and maintenance equipment.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 ensures stable adhesion of the heat dissipation material to the substrate, improving work efficiency and reducing costs by preventing material fallout and enhancing adhesion strength.

Implementation Method 1

an adhering composition including a resin component containing an epoxy resin, a curing agent, and an inorganic filler

Methodology Applied
Scientific EffectAdhesion: Adhesive

Implementation Method 2

a resin component containing an epoxy resin, a curing agent

Methodology Applied
Scientific EffectCuring: Chemical Bonding

Data Source

PatentEP3315573B1Heat dissipation material adhering composition, heat dissipation material having adhesive, inlay substrate, and method for manufacturing same
Publication Date: 2023.02.15 TATSUTA ELECTRICWIRE & CABLE
  • EP3315573B1 patent drawingFigure 1(a)~1(d)
  • EP3315573B1 patent drawingFigure 2(a)~2(b)
  • EP3315573B1 patent drawing

AI summary

Provided are a heat dissipation material capable of ensuring stable adhesion while reducing cost, an inlay substrate using the same, and a method for manufacturing the same. A heat dissipation material having adhesive is obtained by coating a portion or the whole of the heat dissipation material with a heat dissipation material adhering composition including a resin component containing an epoxy resin, a curing agent, and an inorganic filler, and having a complex viscosity at 80°C of 1 × 103 Pa·s to 5 × 106 Pa·s.