Poly(alkylene carbonate) resin composition for high-transparency sheet
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Solution Overview
Problem
Current alternatives to polyvinyl chloride (PVC) materials, such as modified polyethylene, polypropylene, and polyethyleneterephthalate, face issues with physical property deterioration, post-processability challenges, and high production costs, while PVC products generate hazardous gases and dioxins during burning, posing environmental and health risks.
Innovation Solution
A poly(alkylene carbonate) resin composition is developed, combining a strength modifier, flexibilizer, and lubricant, which enhances mechanical properties, printability, and anti-flaming properties, and is processed at lower temperatures, reducing smoke density and manufacturing costs, without using harmful additives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If polyvinyl chloride (PVC) materials are used to manufacture sheets, then mechanical strength and processability are improved, but hazardous gases and dioxins are generated during burning, posing environmental and health risks
Solution Approach 1:
The patent changes the chemical composition parameters by replacing PVC with poly(alkylene carbonate) resin, which has fundamentally different combustion properties. This material substitution eliminates the generation of hazardous gases and dioxins while maintaining acceptable mechanical strength through optimized resin composition and formulation.
Solution Approach 2:
The patent converts the environmental harm of PVC combustion into a benefit by selecting poly(alkylene carbonate) resin that produces harmless combustion products. The material's chemical structure is specifically chosen to ensure safe degradation and combustion behavior, turning the previously harmful combustion process into an environmentally benign one.
2Object-generated harmful factors
If alternative materials such as modified polyethylene, polypropylene, and polyethyleneterephthalate are used to replace PVC, then environmental hazards are reduced, but physical properties deteriorate and production costs increase
Solution Approach 1:
The patent employs composite material formulation by combining poly(alkylene carbonate) resin with specific additives including processing aids, stabilizers, and impact modifiers. This composite approach enhances the mechanical properties and processability of the base resin, achieving a balance between environmental safety and performance requirements that simple alternative materials cannot provide.
3Object-generated harmful factors
If alternative materials are used to replace PVC, then environmental hazards are reduced, but manufacturing costs increase due to high production expenses
Solution Approach 1:
The patent optimizes processing parameters including temperature, pressure, and residence time to improve manufacturing efficiency. By carefully controlling these parameters and selecting appropriate poly(alkylene carbonate) resin grades, the patent achieves energy-efficient processing and reduced cycle times, thereby lowering production costs while maintaining environmental benefits.
4Object-generated harmful factors
If poly(alkylene carbonate) resin composition is used, then smoke density and hazardous gas generation are minimized during burning, but achieving high transparency and gloss requires precise formulation control
Solution Approach 1:
The patent applies local quality by selectively choosing additives and modifiers that address specific performance requirements without compromising the overall low-smoke and non-hazardous combustion characteristics. Each component is carefully selected to provide localized functional improvement while maintaining the fundamental safety advantages of the poly(alkylene carbonate) base resin.
Data Source
AI summary
Provided is an eco-friendly poly(propylene carbonate) resin composition for a sheet, which is characterized by using a poly(alkylene carbonate) resin developed by efficiently utilizing carbon dioxide, which is a major contributor to global warding, as a main material, and including appropriate additives, such as, a strength modifier, and a flexibilizer, thereby completely solving environmental hazards controversy of the existing polyvinyl chloride resin products; exhibiting excellent mechanical and thermal properties, processability, post processability (printability, embossing and surface treatment, laminating characteristics) and superior anti-flaming property (low smoke density) and elongation characteristics as compared with the existing polyvinyl chloride resin products; and overcoming an extruding production method which is a small-sized production manner, corresponding to a big defect in thermoplastic plastics emerged as substitutes for polyvinyl chloride resin products and thus applying a calendering process method which is a mass production manner.