Acrylic Paint-Protective Coating for Wrinkle-Free 3D Surface Protection
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Solution Overview
Problem
Existing paint-protective sheets and liquid protective coatings face challenges in efficiently protecting complex three-dimensional objects, with sheets prone to wrinkling and improper application, and liquid coatings lacking sufficient removability and workability.
Innovation Solution
A paint-protective coating material formed from an acrylic coating composition with specific monomer ratios and properties, including acrylonitrile, is developed to provide good removability and workability, using a composition that includes an acrylic polymer with defined storage moduli and glass transition temperatures, and optionally incorporating inorganic powders for UV protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a paint-protective sheet is applied to protect paint layers, then protection is provided, but wrinkles may form and the sheet may peel off during storage or transport
Solution Approach 1:
The patent replaces the mechanical sheet application system with a liquid coating composition system. Instead of physically adhering a pre-formed sheet to the paint layer, the invention applies a liquid composition that forms a protective coating through chemical bonding, eliminating wrinkles and adhesion issues associated with sheet application.
Solution Approach 2:
The patent changes the physical state of the protective material from solid sheet to liquid composition. The liquid coating composition can be uniformly applied to complex three-dimensional surfaces and forms a continuous protective layer without the application difficulties of sheets, while the formulated composition ensures proper adhesion and flexibility to prevent peeling.
2Ease of manufacture
If a liquid protective coating composition is applied and dried to form a protective coat, then protection is formed without substrate, but removability and workability are insufficient
Solution Approach 1:
The patent carefully formulates the liquid coating composition with specific resin types, plasticizer contents, and curing characteristics to achieve optimal balance between adhesion for protection and ease of removal. The composition parameters are controlled to allow the coating to be removed cleanly after serving its protective function, addressing the workability issue.
Solution Approach 2:
The patent uses composite material formulation combining specific resins, plasticizers, and other additives in controlled ratios. This composite approach allows the coating to exhibit both strong adhesion for effective protection and controlled removability through the synergistic effects of the formulated components.
3Ease of operation
If a paint-protective coating material is formed with good removability, then removal workability improves, but protection effectiveness may be compromised
Solution Approach 1:
The patent optimizes the composition parameters including resin selection, plasticizer content, and curing characteristics to achieve the right balance. The formulation allows the coating to adhere strongly enough for effective protection during storage and transport, yet maintains controlled removability when needed, resolving the contradiction between these two requirements.
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 coating material achieves efficient protection and easy removal from paint layers, maintaining integrity during storage and transport, while inhibiting photodegradation and reducing environmental solvent use.
Implementation Method 1
The acrylic polymer-forming monomers include a monomer (mT) having a homopolymer glass transition temperature (Tg) of 90° C. or higher and a monomer (mL) having a homopolymer Tg of −30° C. or lower
Implementation Method 2
optionally incorporating inorganic powders for UV protection
Data Source
AI summary
Provided is a paint-protective coating material formed from an acrylic coating composition comprising an acrylic polymer as base polymer. The acrylic polymer-forming monomers includes a monomer (mT) having a homopolymer Tg of 90° C. or higher and a monomer (mL) having a homopolymer Tg of −30° C. or lower. The monomer (mT) includes at least acrylonitrile. In the monomers, the monomers (mT) and (mL) have a molar ratio (mT/mL) of 0.8 or higher and 1.5 or lower. The paint-protective coating material has storage moduli of 150 MPa or higher and 1000 MPa or lower at 23° C., and 0.40 MPa or higher at 70° C.