Fire Resistant Gypsum Panel With Thermal Barrier Layer
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Solution Overview
Problem
Conventional gypsum panels lack sufficient fire resistance, as they fail to effectively insulate and maintain structural integrity during intense heat exposure, leading to inadequate performance in fire tests.
Innovation Solution
A gypsum panel design incorporating a thermal barrier layer with a thermal additive and a gypsum core filled with silica or alumina, which reduces heat transfer and minimizes shrinkage, thereby enhancing fire resistance and extending the time to failure in fire tests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional gypsum panels are used, then manufacturing simplicity is maintained, but fire resistance is insufficient
Solution Approach 1:
The gypsum panel is divided into distinct functional layers: a facing material layer, a thermal barrier layer containing heat-reflective particles, and a gypsum core layer. This segmentation allows each layer to perform its specific function (structural integrity, heat reflection, and fire resistance) independently, thereby improving overall fire resistance without creating an unmanageably complex structure.
Solution Approach 2:
The patent combines multiple materials with complementary properties: gypsum provides fire resistance and structural stability, while heat-reflective particles (such as metal flakes or ceramic beads) in the thermal barrier layer reflect thermal radiation. This composite approach enhances fire resistance beyond what conventional gypsum alone can achieve.
2Reliability
If thermal barrier layer with thermal additive is added, then fire resistance is improved, but manufacturing complexity increases
Solution Approach 1:
Heat-reflective particles are incorporated into the gypsum slurry before the panel is formed and dried. This preliminary incorporation ensures uniform distribution of the thermal barrier materials throughout the panel structure, eliminating the need for separate application steps and simplifying the manufacturing process despite the added functionality.
3Temperature
If silica or alumina filler is used in gypsum core, then heat transfer is reduced, but material cost increases
Solution Approach 1:
Heat-reflective particles are concentrated in the thermal barrier layer adjacent to the facing material, which is the region most exposed to external heat sources. This localized placement of expensive heat-reflective materials maximizes their effectiveness in reflecting heat before it reaches the gypsum core, while minimizing the overall quantity of expensive materials required in the panel.
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 enhanced gypsum panel achieves improved fire resistance, meeting or exceeding fire rating specifications of at least 60 minutes in ASTM E119-20a tests, maintaining structural integrity and reducing heat transfer effectively.
Implementation Method 1
a thermal barrier layer adjacent the inner surface of the first facing material, the thermal barrier layer comprising a thermal additive
Implementation Method 2
a gypsum core comprising a first filler comprising silica, alumina, or a mixture thereof... minimizing the effect of shrinkage of the gypsum panel upon exposure to heat
Data Source
AI summary
The present disclosure is directed to a gypsum panel and a method of making a gypsum panel. For instance, the gypsum panel comprises: a first facing material having an outer surface and an inner surface opposing the outer surface; a thermal barrier layer adjacent the inner surface of the first paper material, the thermal barrier layer comprising a thermal additive; a gypsum core having an outer surface facing the thermal barrier layer and an inner surface opposing the outer surface, the gypsum core comprising a first filler comprising silica, alumina, or a mixture thereof; and a second facing material adjacent the inner surface of the gypsum core.