Composite Reinforcement Rod Curing Method
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Solution Overview
Problem
Existing reinforcement rods made from metal, particularly steel, face challenges in producing composite materials with improved mechanical properties and reduced risk of overheating during the curing process, which can lead to damage such as tears.
Innovation Solution
A method using a resin-curing agent mixture with at least two different curing agents that form reactive species under different conditions, allowing for a staggered curing process to prevent overheating, combined with a split design for the core rod and peripheral laminate to enhance bonding strength and minimize fiber undulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single curing agent is used to cure the resin, then the curing process is simple and fast, but the reaction heat causes overheating and potential damage such as tears to the reinforcement rod
Solution Approach 1:
The single curing agent is divided into multiple curing agents (at least two different curing agents) that release reactive species at different rates and under different conditions. This segmentation of the curing function allows the total curing process to be extended over time, preventing heat concentration and overheating while maintaining complete resin curing.
Solution Approach 2:
The curing process is made periodic through the use of multiple curing agents with different activation characteristics. The reactive species are generated at different times and rates, creating a staged curing sequence that controls heat release and prevents thermal damage while ensuring complete crosslinking of the resin.
2Productivity
If the resin is cured quickly to increase productivity, then production efficiency improves, but the reaction heat leads to overheating and potential tears in the reinforcement rod
Solution Approach 1:
The curing agent system is segmented into multiple components with different reactivity levels and activation conditions. This allows the curing process to proceed in stages rather than all at once, maintaining production efficiency while preventing thermal damage that would compromise structural integrity.
Solution Approach 2:
The curing process parameters are changed by introducing multiple curing agents with different activation temperatures and reaction rates. This creates a controlled, extended curing profile that maintains productivity while preventing the temperature spikes that cause tears and damage to the reinforcement rod.
3Object-affected harmful factors
If a mixture of at least two different curing agents is used to extend curing time and prevent overheating, then overheating is reduced, but the device complexity and process control difficulty increase
Solution Approach 1:
Multiple curing agents with different characteristics are merged into a single curing system that works synergistically. The curing agents are combined in a resin-curing agent mixture that is applied together to the fiber bundle, simplifying the application process while achieving extended, controlled curing through the combined action of multiple agents.
Solution Approach 2:
The multiple curing agents are mixed homogeneously with the resin to create a uniform resin-curing agent mixture. This homogeneous distribution ensures consistent curing behavior throughout the reinforcement rod and simplifies the application process, as the entire mixture is applied in one step rather than requiring separate application of individual curing agents.
4Stability of the object's composition
If the core rod is fully cured before applying the peripheral laminate, then the core structure is stable, but the bonding strength between core and peripheral laminate is reduced
Solution Approach 1:
The core rod is prepared in a partially cured state before the peripheral laminate is applied, creating a bonding interface with high reactivity. The curing process is then completed after laminate application, allowing the core and peripheral laminate to bond strongly during the final curing stage when both surfaces are chemically active.
Solution Approach 2:
The curing process is segmented into stages: initial formation of the core rod in a partially cured state, application of the peripheral laminate, and completion of the curing process. This segmentation allows optimization of both core stability and interfacial bonding strength at different stages of the 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 method extends the curing time, reduces the risk of overheating, and improves the mechanical properties of the reinforcement rods by maintaining fiber integrity and enhancing bonding strength between the core and peripheral laminate.
Implementation Method 1
a mixture of at least one resin and at least two different curing agents is used as a resin-curing agent mixture, and the two curing agents form reactive species under different conditions for curing the resin
Data Source
AI summary
The invention relates to a method for producing a reinforcement rod (2) from a fibrous composite material consisting of continuous mineral fibers (5, 23, 35) and at least one resin (7, 25), at least one portion of the mineral fibers (5, 23) being mixed with a resin-curing agent mixture, the mineral fibers (5, 23) that have been mixed with the resin-curing agent mixture and, optionally, resin-free mineral fibers (35) subsequently being brought together to form a rod, and the resin (7, 25) being cured. A mixture of at least one resin (7, 25) and at least two different curing agents is used as said resin-curing agent mixture, the two curing agents forming reactive species under different conditions for curing the resin (7, 25) such that the reactive species are available for the curing process at different times.