Syntactic Foam Parts With Conductive Layers for Heat-Controlled Curing
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Solution Overview
Problem
Conventional buoyancy foams and their manufacturing methods face challenges in achieving efficient, cost-effective, and reliable production, often resulting in temperature spikes that can damage the parts and molds due to poor thermal management.
Innovation Solution
Incorporating thermally-conductive media layers within the mold to distribute heat during resin solidification, which are porous to allow low-density spheres and resin to pass through, thereby reducing temperature spikes and enabling quicker, more reliable production of larger parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional buoyancy foams are manufactured using standard processes, then production can be maintained at conventional rates, but temperature spikes occur that damage parts and molds
Solution Approach 1:
A thermally-conductive media layer is introduced as an intermediary component between the resin and mold walls. This layer acts as a heat transfer mediator, conducting heat away from the resin during solidification to prevent temperature spikes while enabling faster production rates.
Solution Approach 2:
The thermal conductivity parameter of the mold system is changed by adding the thermally-conductive media layer. This modifies the heat transfer characteristics of the manufacturing process, allowing for faster solidification without excessive temperature buildup.
2Loss of time
If the mold is heated to solidify the resin quickly, then production time is reduced, but temperature spikes damage the parts and molds
Solution Approach 1:
The thermally-conductive media layer serves as a heat distribution intermediary that enables controlled heat transfer. It allows the mold to be heated more effectively and uniformly, reducing solidification time while preventing localized temperature spikes that would damage the parts.
Solution Approach 2:
The patent utilizes the phase transition of the resin from liquid to solid during solidification. The thermally-conductive media layer manages the thermal energy involved in this phase transition, enabling faster cooling without causing damaging temperature fluctuations.
3Volume of moving object
If larger parts are produced, then manufacturing capability is improved, but thermal management becomes more difficult causing temperature spikes
Solution Approach 1:
The thermally-conductive media layer is divided into multiple segments or zones within the mold, particularly positioned in larger parts. This segmentation allows for distributed heat management across the large part volume, preventing temperature spikes while enabling production of larger components.
Solution Approach 2:
The patent addresses thermal management in large parts by adding a dimensional element - the thermally-conductive media layer creates additional heat transfer pathways through the part thickness, improving thermal management capability in larger volume parts.
4Object-affected harmful factors
If thermally-conductive media layers are added to improve heat distribution, then temperature spikes are reduced, but device complexity increases
Solution Approach 1:
The thermally-conductive media layer can be implemented as a porous material that is embedded within the resin. This porous structure provides thermal conduction pathways while maintaining flexibility in the mold design and allowing the material to be integrated during the pouring process, reducing overall device complexity.
Solution Approach 2:
The system creates a composite structure combining the resin, low-density spheres, and thermally-conductive media layer. This composite approach integrates multiple functions (buoyancy, structural integrity, thermal management) into a unified material system, simplifying the overall mold design.
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 method allows for quicker and more reliable solidification of resin with reduced damage to parts, enabling the production of larger syntactic-foam parts with improved thermal conductivity and reduced residual stresses.
Implementation Method 1
The at least one thermally-conductive media layer has a thermal conductivity that is greater than a thermal conductivity of the low-density spheres and a thermal conductivity of the resin. The method additionally includes transferring heat through the at least one thermally-conductive media layer when the resin is being solidified.
Implementation Method 2
The method additionally includes solidifying the resin after the resin is introduced into the mold.
Data Source
AI summary
A method of making a syntactic-foam part includes positioning at least one thermally-conductive media layer within a mold such that at least a portion of the at least one thermally-conductive media layer is spaced apart from an interior surface of the mold. The method also includes loading low-density spheres into the mold so they surround the at least one thermally-conductive media layer. The method further includes introducing a resin into the mold so that the at least one thermally-conductive layer and the low-density spheres are embedded within the resin. The at least one thermally-conductive media layer has a thermal conductivity that is greater than a thermal conductivity of the low-density spheres and the resin. The method additionally includes solidifying the resin after the resin is introduced into the mold. The method also includes transferring heat through the at least one thermally-conductive media layer when the resin is being solidified.