Composite Panel Sintering via Resin Powder Compression
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Solution Overview
Problem
The existing methods for producing composite panels from wood chippings face challenges such as increased production costs, reduced productivity, and poor water resistance and fire retardancy due to the use of waste materials and complex processing systems, leading to heavy, heterogeneous panels that are difficult to handle and require costly treatments.
Innovation Solution
A method and system that involves preparing resin powder and other particulate materials, mixing them, and subjecting the mixture to mechanical compression and heat between 200°C and 350°C under 400-800 MPa pressure for thermal-mechanical sintering, allowing for rapid and cost-effective production of high-quality panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If waste materials are used to replace quality wood chippings, then production cost is reduced and material availability is improved, but panel heterogeneity increases and adhesive ratio must be increased
Solution Approach 1:
The patent changes the physical state of the adhesive from liquid to powder form, allowing it to be mixed with waste materials in a dry state before compression. This parameter change enables better distribution of adhesive particles throughout the heterogeneous waste material matrix, improving bonding without requiring excessive adhesive quantities.
Solution Approach 2:
The invention creates a composite material system where powder adhesive and waste materials are combined in a controlled mixture before compression. This composite approach allows the heterogeneous waste materials to be bound together effectively, transforming the heterogeneity from a defect into a manageable characteristic of the final panel structure.
2Quantity of substance
If increasing amounts of waste materials are used, then production cost is reduced, but panel weight increases and handling becomes difficult
Solution Approach 1:
The patent replaces the traditional liquid resin system with a powder adhesive system that is applied in a dry state and then activated through compression and heating. This substitution changes the fundamental mechanism of material binding, allowing waste materials to be incorporated more efficiently without proportionally increasing panel weight, as the powder adhesive requires less volume and mass to achieve effective bonding.
3Strength
If conventional liquid resin and hot pressing is used, then material bonding is achieved, but production time increases and productivity decreases
Solution Approach 1:
The invention utilizes phase transitions by starting with dry powder materials and transforming them through compression and heating into a bonded solid structure. The powder adhesive transitions from a loose particulate state to a bonded matrix that binds waste materials together, achieving strong material bonding while significantly reducing the time required compared to liquid resin systems that require extended curing periods.
4Adaptability or versatility
If panels are made with porous honeycomb structure, then waste materials are incorporated, but water resistance and fire retardancy are compromised
Solution Approach 1:
The patent changes the physical state and application method of the adhesive from liquid to powder form, which fundamentally alters how the panel structure forms during compression. This parameter change enables the creation of a denser, less porous panel structure compared to traditional liquid resin systems, thereby improving water resistance and fire retardancy while still incorporating waste materials effectively.
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
This approach results in high-strength, cost-effective, and quickly produced panels with improved water resistance and fire retardancy, enabling efficient handling and use of a wide range of materials, including waste and recycled materials, while minimizing environmental impact.
Implementation Method 1
subjecting the mixture to a mechanical compression action at a pressure of between 400 MPa and 800 MPa and to a heating action at a temperature of between 200°C and 350°C in such a way as to determine a thermal-mechanical sintering between the first and the second material
Data Source
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AI summary
Described is a method for making a multi-purpose panel from a composite material, comprising the steps of preparing a first particulate material (2) in the solid state comprising a resin powder, preparing a second particulate material (3) in the solid state, mixing the first (2) and the second material (3) to obtain a mixture (10), introducing the mixture (10) in the solid state in a moulding cavity (4), subjecting the mixture (10) to a mechanical compression action at a pressure of between 400 and 800 MPa and a heating action carried out at a temperature of between 250 and 350°C so as to determine a thermal-mechanical sintering between the first (2) and the second material (3) and cooling the mixture (10) to obtain a solid product (11) in which the first (2) and the second material (3) are aggregated monolithically together.