Organosiloxane Network Coating Laser Patterning

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Solution Overview

Problem

Existing organosiloxane network (OSN) coatings lack the ability to be easily shaped or patterned without cracking, flaking, or delamination during laser ablation, which is crucial for applications requiring clean apertures or specific shapes.

Innovation Solution

A crosslinked siloxane composition is developed using a mixture of alkoxysilane precursor materials, including hydrophobic and aromatic alkoxysilane precursors, which can be polymerized to form a thermally stable and mechanically robust coating that can be cleanly patterned and shaped using laser ablation, with a mole ratio of hydrophobic to aromatic alkoxysilane precursors ranging from 1:9 to 9:1, and processed via sol-gel chemistry to create a low-surface-energy material.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If existing organosiloxane network coatings are used, then thermal stability and mechanical strength are achieved, but the ability to be easily shaped or patterned without cracking, flaking, or delamination is lost

Engineering Contradiction:

Improveshaping precisionVSAvoidcoating integrity

Core Design Contradiction:

Manufacturing precisionVSStrength

Solution Approach 1:

The patent modifies the chemical composition parameters of the OSN coating by incorporating specific ratios of hydrophobic alkoxysilane precursors (containing fluorinated alkyl groups) and aromatic alkoxysilane precursors (containing chromophores). This compositional parameter change enables the coating to absorb laser energy uniformly while maintaining structural integrity, allowing precise shaping without cracking or delamination.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite organosiloxane network coating by combining multiple types of alkoxysilane precursors with different functional properties: hydrophobic precursors provide water repellency and flexibility, while aromatic precursors provide laser absorption capability. This composite structure enables both shaping precision and coating integrity to be achieved simultaneously.

Inventive Principle:

Principle #40Composite materials

2Strength

If the coating is made durable and resistant to surface wear, then mechanical strength is improved, but the ability to be cleanly patterned by laser ablation deteriorates

Engineering Contradiction:

Improvesurface wear resistanceVSAvoidlaser patterning quality

Core Design Contradiction:

StrengthVSManufacturing precision

Solution Approach 1:

The patent incorporates aromatic chromophores locally within the OSN coating structure at controlled concentrations. These localized chromophore regions enable selective laser absorption and clean ablation, while the bulk coating maintains its durable, wear-resistant properties through the crosslinked siloxane network and hydrophobic components.

Inventive Principle:

Principle #3Local quality

3Ease of manufacture

If the coating formulation is simplified, then ease of manufacture is improved, but the ability to achieve both thermal stability and shapeability is reduced

Engineering Contradiction:

Improveformulation simplicityVSAvoidcoating performance

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent employs alkoxysilane precursors that serve multiple functions simultaneously: hydrophobic precursors provide both water repellency and contribute to the crosslinked network structure, while aromatic precursors provide both chromophore functionality for laser absorption and structural integrity. This multi-functionality maintains coating reliability while keeping the formulation relatively simple.

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 resulting coating is thermally stable, resistant to surface wear, and can be precisely shaped through laser ablation without cracking or delamination, offering improved mechanical strength and low adhesion to solvents, making it suitable for durable and anti-wetting applications.

Implementation Method 1

processed via sol-gel chemistry to create a low-surface-energy material

Methodology Applied

Scientific EffectSol-gel chemistry: Sol

Implementation Method 2

polymerization product of a mixture including from about 2 to about 12 alkoxysilane precursor materials

Methodology Applied

Scientific EffectPolymerization: Photopolymerisation

Implementation Method 3

can be precisely shaped through laser ablation without cracking or delamination

Methodology Applied

Scientific EffectLaser ablation: Laser Ablation

Implementation Method 4

at least one the alkoxysilane precursor material is aromatic represented by [aromatic structure with chromophore groups]

Methodology Applied

Scientific EffectAbsorption of electromagnetic radiation: Absorption (EM radiation)

Implementation Method 5

at least one of the alkoxysilane precursor materials is a hydrophobic alkoxysilane precursor material

Methodology Applied

Scientific EffectHydrophobic effect: Hydrophobe

Data Source

PatentUS9758696B2Organosiloxane network composition

Publication Date: 2017.09.12 GENESEE VALLEY INNOVATIONS LLC

AI summary

There is provided a crosslinked siloxane composition. The crosslinked siloxane composition is a polymerization product of a mixture including from about 2 to about 12 alkoxysilane precursor materials. At least one of the alkoxysilane precursor materials is a hydrophobic alkoxysilane precursor material. In addition at least one of the alkoxysilane precursor materials is an aromatic alkoxysilane precursor material.