Water-Based Vehicle Paint Composition Eliminating Drying Ovens
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Solution Overview
Problem
The existing water-based middle coatless coating technique for vehicles faces challenges with delamination of the paint film due to ultraviolet exposure, low chip resistance, and poor adhesion, which are not adequately addressed by current eco-friendly and cost-effective solutions.
Innovation Solution
A water-based paint composition comprising a core-shell microgel resin, dimer-modified polyester resin, (meth)acryl-modified polyurethane resin, a curing agent, and water, with specific formulations to enhance film smoothness, water resistance, and chip resistance, allowing for a wet-on-wet application without post-heating, thereby eliminating the need for intermediate drying processes and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If water-based middle coatless coating technique is used to eliminate intermediate coating process, then cost and time are reduced, but paint film delamination and poor adhesion occur
Solution Approach 1:
The patent modifies the chemical composition parameters of the water-based paint by incorporating specific resins (polyester resin, polyurethane resin, acrylic resin) and additives (silane-modified polyester resin, fluorine-containing compound) to enhance film adhesion and prevent delamination while maintaining the middle coatless coating process
Solution Approach 2:
The patent uses a composite paint formulation combining multiple resin types (polyester, polyurethane, acrylic) with crosslinking agents and surface modifiers to create a multi-functional coating system that achieves both process efficiency and reliable adhesion without intermediate coating steps
2Use of energy by stationary object
If water-based middle coatless coating technique is used to eliminate intermediate drying oven, then energy consumption and equipment costs are reduced, but chip resistance deteriorates
Solution Approach 1:
The patent changes the chemical composition by adding crosslinking agents and specific resins that form a durable crosslinked network structure, enabling the paint film to achieve high chip resistance without requiring intermediate drying oven treatment
Solution Approach 2:
The paint composition performs self-crosslinking and self-adhesion enhancement through its chemical components, eliminating the need for external drying oven energy input while automatically achieving the required mechanical strength and chip resistance
3Use of energy by stationary object
If water-based paint composition is applied wet-on-wet without post-heating, then energy consumption is reduced, but film smoothness and appearance quality deteriorate
Solution Approach 1:
The patent modifies the paint composition by incorporating fluorine-containing compounds and specific resins that lower the surface tension and improve flow characteristics, allowing the paint to self-level and achieve smooth film formation without post-heating energy input
Solution Approach 2:
The paint composition performs self-leveling and self-smoothing through its modified rheological properties and surface tension characteristics, eliminating the need for external post-heating while automatically achieving the desired film smoothness and appearance quality
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 paint composition achieves excellent film smoothness, water resistance, and chip resistance, while eliminating the need for air conditioning and ovens, reducing CO2 production, and minimizing equipment costs, while maintaining desirable material properties and appearance.
Implementation Method 1
a core-shell microgel resin, a dimer-modified polyester resin, a (meth)acryl-modified polyurethane resin, and a curing agent
Implementation Method 2
a dimer-modified polyester resin, wherein the dimer-modified polyester resin is comprised in an amount of 1 to 10 wt % with respect to 100 wt % of the paint composition
Implementation Method 3
a (meth)acryl-modified polyurethane resin
Data Source
AI summary
Embodiments relate to a water soluble paint composition for a vehicle. The water soluble paint composition includes a core-shell microgel resin, a dimer-modified polyester resin, a (meth)acryl-modified polyurethane resin, a curing agent, a pigment, and water, wherein the dimer-modified polyester resin is included in an amount of 1 to 10 wt % with respect to 100 wt % of the water-soluble paint composition. When the water soluble paint composition according to various embodiments is used to paint a vehicle, air handling equipment and an oven are not needed, so that energy can be saved in the painting process, CO2 production can be reduced, costs can be saved for painting equipment and maintenance, and space for a painting line can be saved, and a paint layer can be formed having excellent smoothing, waterproofing, chipping resistance, and outer appearance.