Molded HDPE-Polyurethane Building Assemblies for Rapid Fire Resistance
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Solution Overview
Problem
There is a need for a structurally sound, fire-resistant, and environmentally friendly building material that can be used to construct habitable structures, particularly in developing communities and refugee camps, which meets ASTM standards and can be easily assembled.
Innovation Solution
A building assembly system using thermoformed high density polyethylene (HDPE) components filled with high density polyurethane (HDPU) foam, connected by steel frames and straps, which meets ASTM standards for structural integrity and fire resistance, and can be quickly assembled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high density polyethylene and polyurethane foam are used as building materials, then environmental stability and recyclability are improved, but fire resistance and structural soundness deteriorate
Solution Approach 1:
The patent uses composite materials by combining high density polyethylene (HDPE) with high density polyurethane (HDPU) foam. The HDPE provides structural framework and fire resistance, while the HDPU foam filling provides insulation and structural support. This composite approach allows the material to simultaneously achieve environmental stability, fire resistance, and structural soundness that neither material could provide alone.
2Strength
If traditional construction methods are used, then structural integrity is ensured, but construction time and labor requirements increase
Solution Approach 1:
The building system is divided into modular components that can be pre-manufactured and then assembled on-site. Each module contains pre-installed HDPE panels with HDPU foam filling, creating standardized units that maintain structural integrity while enabling rapid deployment through simple connection mechanisms, significantly reducing construction time and labor requirements.
Solution Approach 2:
The HDPE panels are pre-filled with HDPU foam in a controlled manufacturing environment before assembly. This preliminary action ensures proper filling, curing, and quality control, allowing the modules to be transported and installed as complete structural units, eliminating time-consuming on-site foam injection and curing processes.
3Reliability
If HDPE foam is used for building structures, then corrosion resistance and maintenance requirements are improved, but flammability worsens
Solution Approach 1:
The HDPE structural panels act as an intermediary barrier between the external environment and the HDPU foam filling. The HDPE provides a fire-resistant shell that contains the foam, preventing direct exposure to flames while maintaining the corrosion-resistant and low-maintenance properties of both materials. This intermediary structure allows the system to achieve both corrosion resistance and improved fire resistance.
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 system provides a rapid, cost-effective, and sustainable method to construct habitable structures that are fire-resistant, structurally sound, and environmentally friendly, meeting regulatory standards while requiring minimal skilled labor and traditional construction time.
Implementation Method 1
Each molded component is filled with a fire retardant foam or other suitable material to provide structural support and insulation.
Implementation Method 2
a skin composition molded to form a shell surrounding a hollow interior. Each molded component is filled with a fire retardant foam
Data Source
AI summary
A building assembly system that comprises thermoformed high density polyethylene molded components filled with high density polyurethane foam. The molded components are configured in a cube or triangle form and secured against a steel frame to provide a habitable constructed unit. The composition of the high density polyethylene molded components filled with high density polyurethane foam meets standards for the American Society for Testing and Materials for a habitable structure used by humans. The habitable structure can be used on land or water.