Acrylic Acid Plasma Polymerization Film for Solvent-Free Coating
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Solution Overview
Problem
Existing film forming methods using acrylic acid-based monomers face challenges in reducing CO2 emissions and require consideration of working environments due to solvent volatilization, and existing plasma treatments do not effectively polymerize acrylic acid-based monomers or result in films with inadequate properties.
Innovation Solution
A novel acrylic acid plasma polymerization film is developed through a dry process using plasma treatment, which promotes linear addition polymerization and three-dimensional crosslinking, resulting in a film with enhanced properties such as heat resistance, solvent resistance, and transparency, and can be formed in various environments including atmospheric pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wet process is used to form acrylic coating film by coating and heating, then the film can be formed with good adhesion and uniformity, but CO2 emissions increase and solvent volatilization creates working environment issues
Solution Approach 1:
The invention changes the fundamental parameter of the film formation process from wet (solvent-based) to dry (plasma-based). By using plasma polymerization, the coating is formed without organic solvents, eliminating CO2 emissions and solvent volatilization while maintaining film adhesion and uniformity through controlled plasma deposition
Solution Approach 2:
The invention replaces the thermal-mechanical process (coating followed by heating/drying) with a plasma-based chemical process. Plasma activation enables direct polymerization of acrylic acid monomers on the substrate surface, substituting the traditional heating and solvent evaporation mechanism with plasma-induced chemical reactions
2Object-generated harmful factors
If plasma treatment is used to form film, then CO2 emissions are reduced and working environment is improved, but the film properties are inadequate and polymerization of acrylic acid-based monomer is not effective
Solution Approach 1:
The invention introduces plasma as an intermediary that mediates between the acrylic acid monomer and the substrate. The plasma activates the monomer molecules and facilitates their polymerization on the substrate surface, enabling effective film formation with superior properties while maintaining the environmental benefits of the dry process
Solution Approach 2:
The invention creates a composite structure through plasma polymerization where the acrylic acid-based monomer forms a crosslinked polymer network on the substrate. This composite film combines the substrate's mechanical properties with the polymer's protective and functional properties, achieving superior film characteristics
3Ease of manufacture
If conventional thermal polymerization is used, then the process is simple and well-established, but the film lacks heat resistance, solvent resistance, and hardness
Solution Approach 1:
The invention changes the polymerization mechanism from thermal to plasma-based. This parameter change fundamentally alters the polymerization kinetics and molecular structure formation, creating a crosslinked network that provides superior heat resistance, solvent resistance, and hardness while maintaining process accessibility
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 plasma polymerization film exhibits superior properties compared to conventional thermal films, contributing to reduced CO2 emissions and enabling application on diverse substrates.
Implementation Method 1
a high energy electron of plasma appropriately dissociates and activates the acrylic acid-based monomer to promote addition polymerization and crosslinking
Implementation Method 2
the monomer is polymerized into a three-dimensional network
Data Source
AI summary
An acrylic acid plasma polymerization film containing C: 35 at % to 45 at %, and O: 7 at % to 12 at %, the balance being H and impurities, and a method for producing the acrylic acid plasma polymerization film, including: joining plasma generated from a first gas and a second gas containing an acrylic acid-based monomer.