Vinyl Chloride Wallpaper Composition for Flame Retardancy and Low VOCs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vinyl chloride resin compositions for wallpaper face challenges in achieving excellent flame retardancy, migration resistance, and processability while minimizing the generation of volatile organic compounds, particularly due to the use of phthalate-based plasticizers and excessive viscosity depressants.
Innovation Solution
A vinyl chloride resin composition comprising di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate and phosphate-based plasticizers, combined with antimony-based flame retardants and carboxylic acid ester-based viscosity depressants, is formulated to enhance flame retardancy, migration resistance, and processability, reducing the need for excessive viscosity depressants and volatile organic compound generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a solid-phase flame retardant is added to the vinyl chloride resin composition, then flame retardancy is improved, but the viscosity of plastisol increases
Solution Approach 1:
The patent changes the physical state parameter of the flame retardant from solid to liquid form. Specifically, it uses liquid flame retardants such as phosphoric acid esters (e.g., triphenyl phosphate, tricresyl phosphate) instead of solid flame retardants, thereby maintaining low viscosity of plastisol while achieving excellent flame retardancy.
Solution Approach 2:
The patent exploits the phase transition difference between solid and liquid flame retardants. By selecting liquid-phase flame retardants that remain fluid at processing temperatures, the patent avoids the viscosity increase problem associated with solid flame retardants while maintaining effective flame retardant performance.
2Ease of operation
If a viscosity depressant is excessively added to lower the viscosity of plastisol, then processability is improved, but the generation of volatile organic compounds increases and product quality deteriorates
Solution Approach 1:
The patent extracts and eliminates the need for excessive viscosity depressants by using liquid flame retardants that inherently maintain low viscosity. This removal of unnecessary additives reduces volatile organic compound generation and improves product quality while maintaining excellent processability.
3Adaptability or versatility
If DOTP-based plasticizer is used in environmentally friendly silk wallpaper, then non-phthalate-based requirement is met, but migration and dye transfer occur causing spots and discolorations
Solution Approach 1:
The patent uses a composite plasticizer system combining DOTP-based plasticizer with liquid flame retardants (phosphoric acid esters). This composite formulation achieves synergistic effects where the flame retardant components help stabilize the plasticizer system, reducing migration and dye transfer while maintaining environmental friendliness and flexibility.
Data Source
AI summary
Provided is a vinyl chloride resin composition for wallpaper that is environmentally friendly and has excellent flame retardancy.