Recycled PET Foamed Composite Board With Strength and Insulation
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Solution Overview
Problem
The extensive use of PET leads to waste, with existing technologies failing to realize effective resource utilization.
Innovation Solution
A foamed PET composite board is prepared using recycled PET, comprising specific components such as inorganic fillers, a blowing agent, and PE wax, processed through melt extrusion and calendaring molding to achieve resource utilization and desired properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If recycled PET is used to prepare composite boards, then resource utilization of PET is improved, but the mechanical strength and structural integrity of the board deteriorate
Solution Approach 1:
The patent creates a composite material system combining recycled PET with inorganic fillers (calcium carbonate, talc powder), blowing agents, and coupling agents. This composite structure allows the recycled PET to maintain adequate mechanical strength while achieving resource utilization. The inorganic fillers provide structural support and the coupling agent enhances the interface between PET and fillers, resolving the strength deterioration issue.
Solution Approach 2:
The patent optimizes the composition parameters of the recycled PET composite, specifically controlling the ratios of PET to inorganic fillers (100:100-200 parts), adding controlled amounts of coupling agents (1-4 parts), and incorporating blowing agents (1-2 parts). These parameter adjustments transform the properties of recycled PET to achieve both resource utilization and acceptable mechanical performance.
2Stability of the object's composition
If inorganic fillers are added to the composite board, then the structural stability and dimensional integrity are improved, but the production complexity increases
Solution Approach 1:
The patent incorporates coupling agents in the formulation stage before extrusion. This preliminary action of pre-mixing the coupling agent with the recycled PET and inorganic fillers simplifies the production process by ensuring proper surface treatment occurs during the single extrusion step, rather than requiring separate treatment steps afterward.
Solution Approach 2:
The patent combines multiple functions into a single extrusion process: mixing recycled PET with inorganic fillers, applying coupling agent treatment, incorporating blowing agents for foaming, and forming the board structure all in one continuous operation. This merging of operations reduces production complexity despite the multi-component formulation.
3Object-affected harmful factors
If a foaming process is used to create the composite board, then the thermal insulation and sound insulation properties are improved, but the manufacturing precision deteriorates
Solution Approach 1:
The patent controls the foaming process by precisely adjusting parameters including extrusion temperature (200-260°C), blowing agent quantity (1-2 parts per 100 parts PET), and regulator content (10-20 parts). These parameter optimizations ensure uniform cell structure formation and consistent foam density throughout the board, maintaining manufacturing precision while achieving thermal insulation.
Solution Approach 2:
The patent uses a regulator (nucleating agent) as an intermediary substance with quantities of 10-20 parts per 100 parts PET. This regulator mediates the foaming process by controlling bubble nucleation and growth, ensuring uniform foam structure and preventing defects that would compromise manufacturing precision.
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 solution results in a board with high strength, sound insulation, thermal insulation, and minimal pollution, while also simplifying the production process and reducing waste.
Implementation Method 1
1-2 parts of a blowing agent
Implementation Method 2
100-200 parts of an inorganic filler
Data Source
AI summary
The present disclosure provides a foamed PET composite board and a preparation method thereof. The foamed PET composite board provided is prepared from a raw material including the following components in parts by mass: 100 parts of PET, 10-20 parts of a regulator, 100-200 parts of an inorganic filler, 1-2 parts of a blowing agent, and 1-4 parts of PE wax, and the PET is recycled PET.