Composite Laminate with Graphene Polymer Matrix and Fiberglass
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Solution Overview
Problem
Conventional structural panels, such as wood SIPs and composite sandwich panels, face issues of high production costs and slow manufacturing rates, while also being prone to moisture-related problems like mold and mildew, limiting their practical adoption in industries like housing.
Innovation Solution
A composite laminate is developed using a scrim, a compounded polymer mixture with graphene, and fill materials like fiberglass, which provides enhanced strength and resistance to moisture, and is produced using a method that includes a series of rollers and heater units to achieve high-speed production and improved consolidation of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If wood SIP panels are used for structural insulation, then production cost is reduced, but moisture resistance deteriorates leading to mold and mildew growth
Solution Approach 1:
The patent uses a composite laminate structure combining polypropylene polymer matrix with fiberglass reinforcement. This composite material provides both cost-effectiveness and superior moisture resistance compared to wood SIP panels, eliminating the mold and mildew problem while maintaining structural integrity.
Solution Approach 2:
The patent changes the material composition parameters by using 0-degree aligned fiberglass fibers embedded in a polypropylene matrix, creating a non-organic material that does not support mold growth. This parameter change from organic wood to synthetic composite fundamentally alters the moisture resistance property.
2Reliability
If hand-laid composite sandwich panels are used for moisture resistance, then durability is improved, but production cost increases and production speed decreases
Solution Approach 1:
The patent replaces the manual hand-laying mechanical process with an automated continuous manufacturing system. The laminate is produced through a rollers and heater units system that continuously forms the composite structure, dramatically increasing production speed while maintaining the moisture-resistant properties achieved through proper material consolidation.
Solution Approach 2:
The patent changes the manufacturing parameters by using controlled heating and rolling processes that achieve proper consolidation of the fiberglass and polypropylene in a continuous manner, eliminating the need for slow hand-laying operations while maintaining structural integrity and moisture resistance.
3Ease of manufacture
If conventional laminate processes are used, then production cost is reduced, but consolidation of fibers and polymer is insufficient resulting in weak laminate
Solution Approach 1:
The patent optimizes the thermal and mechanical parameters by using controlled heating zones followed by progressive rolling compression. This sequence allows the polypropylene to soften and bond with the fiberglass fibers, achieving proper consolidation and high laminate strength (12,000-22,000 psi tensile) without increasing production cost.
Solution Approach 2:
The patent applies continuous heating and rolling action throughout the laminate formation process, ensuring consistent consolidation of the fiberglass fibers into the polypropylene matrix. This continuous useful action maintains cost-effectiveness while achieving superior laminate strength compared to intermittent or insufficient consolidation processes.
4Strength
If meshes with multiple fiber angles (0°, 45°, 90°) are used for equal stress distribution, then strength in all directions is improved, but manufacturing complexity increases and production speed decreases
Solution Approach 1:
The patent applies local quality by using 0-degree aligned fiberglass fibers that are optimally oriented for the primary loading direction, combined with the isotropic properties of the polypropylene matrix. This localized fiber alignment achieves sufficient strength distribution without requiring complex multi-angle mesh configurations, simplifying the manufacturing process.
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 composite laminate is cost-effective, resistant to mold and mildew, and offers high strength and stiffness, with production rates up to 25 feet per minute, achieving tensile strengths of 12,000 to 22,000 psi and stiffness of 800,000 to 1,000,000 psi, while being environmentally friendly by avoiding VOCs.
Implementation Method 1
a series of rollers and heater units to achieve high-speed production and improved consolidation of components
Implementation Method 2
a series of rollers and heater units to achieve high-speed production and improved consolidation of components
Data Source
AI summary
Systems and methods for producing a composite structural laminate comprising fabric, polymer, and fiber layers. During production, the laminate base is heated and compressed several times to improve adhesion of the layers which results in improved laminate strength.