Nano-Protective Coating Modulation Structure for Insulation
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Solution Overview
Problem
Current protective coatings for electronic devices face challenges such as high thickness leading to poor heat dissipation and signal blocking, environmental concerns due to solvent use, and difficulty in achieving effective insulation and corrosion resistance at a nanometer level, especially with methods like Parylene coatings which require harsh conditions and high raw material costs.
Innovation Solution
A method for preparing a highly insulating nano-protective coating using plasma chemical vapor deposition (PCVD) with a modulation structure, involving the alternation of low-dipole moment organic and organic silicon/fluorocarbon layers to achieve excellent insulation and protection without increasing thickness, utilizing monomers with specific chemical inertness and free volume adjustments to enhance coating compactness and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the coating thickness is increased to improve insulation and corrosion resistance, then the protective performance is improved, but the heat dissipation and signal transmission capabilities deteriorate
Solution Approach 1:
The patent applies this principle by developing a nano-scale protective coating with thickness controlled at 1-100 nm range. This ultra-thin film structure provides the necessary insulation and corrosion resistance while maintaining thermal conductivity and signal transmission, effectively resolving the contradiction between protective performance and heat dissipation capability.
Solution Approach 2:
The patent utilizes plasma chemical vapor deposition to precisely control coating thickness at the nanometer scale (1-100 nm). By changing the thickness parameter from conventional micrometer scale to nanometer scale, the coating provides adequate protection while eliminating the negative effects of excessive thickness on heat dissipation and signal transmission.
2Reliability
If the coating thickness is increased to improve insulation and corrosion resistance, then the protective performance is improved, but the signal transmission capability deteriorates
Solution Approach 1:
The patent applies this principle by developing a nano-scale protective coating with thickness controlled at 1-100 nm range. This ultra-thin film structure provides the necessary insulation and corrosion resistance while maintaining thermal conductivity and signal transmission, effectively resolving the contradiction between protective performance and heat dissipation capability.
Solution Approach 2:
The patent utilizes plasma chemical vapor deposition to precisely control coating thickness at the nanometer scale (1-100 nm). By changing the thickness parameter from conventional micrometer scale to nanometer scale, the coating provides adequate protection while eliminating the negative effects of excessive thickness on heat dissipation and signal transmission.
3Ease of manufacture
If the liquid phase method is used to apply protective coating, then the coating process is simple, but environmental pollution and damage to base material occur
Solution Approach 1:
The patent replaces the liquid phase coating method with plasma chemical vapor deposition. This substitution eliminates the need for organic solvents, preventing environmental pollution and damage to temperature-sensitive base materials, while maintaining coating effectiveness through vapor-phase deposition at controlled temperatures.
Solution Approach 2:
The patent uses plasma chemical vapor deposition which operates in a controlled vapor phase environment. This method avoids the use of harmful organic solvents required in liquid phase methods, thereby eliminating environmental pollution and damage to base materials while achieving comparable coating quality.
4Reliability
If the Parylene coating method is used to achieve vapor phase deposition, then the coating provides good protection, but harsh preparation conditions and high costs limit its application
Solution Approach 1:
The patent modifies the vapor phase deposition process by using plasma enhancement to enable coating at lower temperatures and reduced vacuum requirements compared to conventional Parylene methods. This parameter optimization maintains the excellent protective performance while significantly reducing preparation complexity and cost.
Solution Approach 2:
The patent introduces plasma as an intermediary to facilitate the chemical vapor deposition process. The plasma activation enables monomer deposition at milder conditions than conventional Parylene methods, reducing the harsh vacuum and temperature requirements while maintaining coating quality and lowering overall process costs.
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 method results in a coating with improved insulation, corrosion resistance, and reduced material usage, offering better protection and efficiency while maintaining heat dissipation and signal transmission capabilities, with enhanced environmental friendliness and production efficiency compared to existing methods.
Implementation Method 1
performing the following steps at least once to prepare a nano-coating with a high insulation modulation structure on a surface of the base material: introducing monomer A vapor into the reaction chamber to the degree of vacuum of 30 to 300 mTorr, turning on plasma discharge to perform chemical vapor deposition
Implementation Method 2
placing a base material in a reaction chamber of nano-coating preparation equipment, continuously vacuumizing the reaction chamber so that a degree of vacuum in the reaction chamber reaches 10 to 200 mTorr
Data Source
AI summary
A method for preparing a highly insulating nano-protective coating with a modulation structure, belonging to the field of plasma technology. In the method, a reaction chamber is vacuumized and an inert gas is introduced, a base material is caused to move, and a low-dipole moment-organic silicon/fluorocarbon modulation multi-layer compact structure is formed by means of alternately performing low-dipole moment organic coating preparation and organic silicon coating preparation or organic fluorocarbon coating preparation, which can reduce stress of the coating and increase toughness of the coating. At the same time, since a lateral interface is present between the low-dipole moment-organic silicon/fluorocarbon, when corrosive media encounter the lateral interface during corrosion of the coating, the corrosion may develop laterally, so that longitudinal corrosion which penetrates the coating is not prone to forming, thereby avoiding the corrosive media from penetrating through the coating and corroding protected materials and devices. Meanwhile, due to the superlattice effect of the modulation nano-layered structure, the accumulation of dislocations between the layers makes the coating less prone to breakdown, and the power-on capability under water resistance is effectively improved.