Silane Modified PPE Oligomer Sizing for Composite Adhesion

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Solution Overview

Problem

Existing poly(phenylene ether) (PPE) based compatibilizing materials are inefficient in providing enhanced compatibility, adhesion, dielectric performance, and reducing moisture absorption in polymeric composite materials.

Innovation Solution

A silane modified PPE oligomer with a resin reactive functional group is used as a sizing agent for reinforcing agents or fillers, improving compatibility and adhesion by forming bonds with the resin and reinforcement materials, thereby enhancing dielectric performance and reducing moisture absorption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional PPE based compatibilizing materials are used, then basic compatibility is provided, but enhanced compatibility, adhesion, dielectric performance, and moisture resistance are not achieved

Engineering Contradiction:

Improvecompatibility and adhesionVSAvoiddielectric performance and moisture resistance

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies composite materials by combining silane modified PPE oligomer with both organic resin matrices and inorganic reinforcement materials (glass fibers, silica particles). The silane moiety provides inorganic compatibility while the PPE oligomer provides organic compatibility, creating a dual-function compatibilizing material that simultaneously enhances adhesion to both phases and provides improved dielectric performance and moisture resistance.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent changes the chemical parameters of the PPE compound by introducing silane functional groups and resin reactive functional groups. This modification transforms the PPE from a basic compatibilizer to an enhanced multifunctional material that can participate in resin network formation and provide superior dielectric and moisture resistance properties.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If surface treatment with sizing agents is applied to reinforcing agents, then compatibility with resin matrix is improved, but dielectric performance and moisture absorption properties are not enhanced

Engineering Contradiction:

Improvecompatibility with resin matrixVSAvoidmoisture absorption and dielectric performance

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition and functional groups of the sizing agent by using silane modified PPE oligomer instead of conventional sizing agents. The silane and resin reactive functional groups enable participation in resin network formation, creating a more effective barrier against moisture and improving dielectric performance while maintaining compatibility.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The silane modified PPE oligomer acts as an intermediary material that bridges the inorganic reinforcement surface and the organic resin matrix. The silane moiety anchors to inorganic surfaces while the resin reactive functional groups participate in resin network formation, creating strong interfacial bonding that simultaneously improves compatibility and provides enhanced dielectric and moisture resistance properties.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Strength

If silane modified PPE is used as sizing agent, then adhesion to reinforcement materials is improved, but resin network integration must be achieved through reactive functional groups

Engineering Contradiction:

Improveadhesion to glass and metalVSAvoidmolecular structure with multiple functional groups

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The silane modified PPE oligomer is designed with multi-functionality, where a single molecular structure performs multiple functions: the silane moiety provides anchoring to inorganic surfaces, the resin reactive functional groups participate in resin network formation, and the PPE oligomer backbone provides compatibility with organic matrices. This multi-functional design simplifies the overall system by replacing multiple separate agents with one integrated material.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 silane modified PPE oligomer improves the compatibility and adhesion of inorganic fillers and metals within polymeric materials, enhancing dielectric properties and reducing moisture absorption, making it suitable for thermosetting materials like prepregs and composites.

Implementation Method 1

improving compatibility and adhesion by forming bonds with the resin and reinforcement materials

Methodology Applied

Scientific EffectChemical bonding: Chemical Bonding

Implementation Method 2

reducing moisture absorption

Methodology Applied

Scientific EffectHydrophobic interaction: Hydrophobe

Data Source

PatentUS12180337B2Poly (phenylene ether) based compatibilizing material

Publication Date: 2024.12.31 SHPP GLOBAL TECH BV

AI summary

Compatibilizing materials for use with fibers and polymeric compositions are described. A compatibilizing material can include a silane (Si) modified polyphenylene ether (PPE) oligomer having a resin reactive functional group. The resin reactive functional group can be between the PPE moiety and a Si moiety. In other instances, the resin reactive functional group can be a substituent of the Si moiety.