Fiber Products with Temperature Control Additives
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Solution Overview
Problem
The challenge in the fiber product industry is the occurrence of deleterious self-heating during the curing process of alternative binder systems, which can damage products and pose safety hazards, particularly in insulation materials with high insulating capacity or dense binder content, and the lack of a single binder composition suitable for various applications across the building and automotive sectors.
Innovation Solution
Incorporating a temperature control additive, such as aluminum hydroxide, magnesium hydroxide, or calcium sulfate dihydrate, into the fiber product to undergo an endothermic process that absorbs heat during the curing process, maintaining a safe temperature and preventing excessive self-heating, while ensuring the binder composition remains unchanged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If alternative binder formulations are used to avoid formaldehyde, then environmental safety is improved, but the curing process generates excessive heat causing deleterious self-heating
Solution Approach 1:
The patent converts the harmful exothermic heat generation during binder curing into a beneficial temperature control mechanism by adding temperature control additives that undergo controlled endothermic decomposition. These additives absorb the excess heat generated during curing, preventing deleterious self-heating while maintaining the environmental safety of formaldehyde-free binder formulations.
Solution Approach 2:
Temperature control additives serve as intermediary substances between the exothermic binder curing reaction and the surrounding environment. These additives decompose endothermically at controlled rates, acting as a heat buffer that mediates the temperature profile during curing, preventing both excessive heat generation and insufficient curing temperature.
2Productivity
If higher curing temperatures are applied to accelerate binder curing, then productivity is improved, but deleterious self-heating occurs damaging the product
Solution Approach 1:
The patent changes the thermal parameters of the curing system by incorporating temperature control additives with specific decomposition temperatures and heat absorption capacities. This allows the system to maintain higher curing temperatures for improved productivity while the additives dynamically adjust the temperature profile to prevent product-damaging self-heating through controlled endothermic decomposition.
Solution Approach 2:
Temperature control additives are incorporated into the binder formulation beforehand to provide thermal cushioning during the curing process. These additives are pre-positioned to decompose endothermically when temperature thresholds are approached, cushioning against temperature excursions that would cause product damage while allowing high curing temperatures for productivity.
3Device complexity
If a single binder composition is used across various applications, then device complexity is reduced, but the lack of temperature control causes inconsistent curing across different product densities
Solution Approach 1:
The patent achieves universal applicability of a single binder composition across different product densities and applications by incorporating temperature control additives that automatically adapt to varying heat generation rates. These additives provide multi-functionality by simultaneously controlling temperature in low-density insulation materials and high-density products, ensuring consistent curing homogeneity without requiring formulation changes for different applications.
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 temperature control additive effectively prevents deleterious self-heating and enhances the homogeneity of the curing process, allowing for higher curing temperatures and shorter cycle times without compromising the product's properties, thus improving manufacturing efficiency and safety.
Implementation Method 1
the temperature control additive is configured to undergo an endothermic process at a temperature within the predetermined temperature range
Data Source
AI summary
A fiber product is described which includes fibers, a binder and a temperature control additive. The fiber product has properties that make it useful for a variety of applications. The fibers may be glass fibers and the product may be a fiberglass insulation product for use in buildings, vehicles, or other structures for acoustic and/or thermal insulation. The fibers may be cellulosic fibers and the product may be a wood board product. The temperature control additive is incorporated into the uncured fiber product to prevent deleterious self-heating during or after binder curing. The temperature control additive undergoes an endothermic process that consumes at least a portion of the energy generated during the exothermic curing reaction.