Thermally Expandable Resin Sheet for Pipe Penetration Fireproofing
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Solution Overview
Problem
Conventional fireproof collars for pipes are cumbersome, require multiple sizes to fit different pipe diameters, and are difficult to handle due to their weight and rigidity, while alternative materials like aluminum foil collars are prone to damage during transport.
Innovation Solution
An epoxy resin-containing thermally expandable resin composition sheet with linear grooves on its surface, allowing for easy bending and adaptation to various pipe sizes without the need for specialized cutting tools, and featuring a substrate layer for enhanced flexibility and portability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional metal collars are used for fireproofing pipes, then fireproofing effectiveness is improved, but weight and handling difficulty increase
Solution Approach 1:
The invention changes the material parameter from heavy metal to lightweight resin composition, while maintaining fireproofing effectiveness through thermal expansion properties. The resin composition contains thermally expandable graphite and other fire-resistant materials that expand when exposed to heat, creating an insulating barrier that prevents flame and smoke penetration, thus achieving reliable fireproofing without the weight penalty of metal collars.
2Reliability
If conventional metal collars are used for different pipe sizes, then fireproofing coverage is improved, but device complexity and inventory requirements increase
Solution Approach 1:
The resin composition sheet is designed with universal applicability to pipes of various diameters. The sheet can be wrapped around pipes of different sizes and secured with binding members, eliminating the need for multiple pre-sized collar variants. This multi-functional design allows a single product type to serve multiple pipe size requirements while maintaining effective fireproofing coverage.
3Weight of moving object
If aluminum foil collars are used instead of metal collars, then weight is reduced, but structural reliability deteriorates due to damage during transport
Solution Approach 1:
The invention uses a composite resin composition that combines multiple materials with complementary properties: thermally expandable graphite for fire resistance, polyester resin for structural integrity, and aluminum powder for heat reflection. This composite structure provides both the lightweight property needed to reduce weight and the structural strength required to prevent damage during transport and installation, overcoming the limitations of pure aluminum foil collars.
4Adaptability or versatility
If conventional cutting methods are used for metal collars, then size adjustment is possible, but ease of operation worsens due to specialized tool requirements
Solution Approach 1:
The invention extracts the cutting operation entirely from the installation process by providing the resin composition in sheet form that can be directly wrapped and cut with simple tools. The sheet material can be easily trimmed to the required length using basic cutting tools during installation, eliminating the need for specialized cutting equipment required for metal collars. This simplifies the operation while maintaining the ability to adjust size for different pipe configurations.
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 sheet can be easily wound around pipes, including those with complex shapes, and expands to block flames and smoke when exposed to heat, providing effective fireproofing without the need for multiple collar sizes or heavy metal materials.
Implementation Method 1
a thermally expandable resin composition 600 is filled at the inside of each metal unit 510... When the conventional penetration structures for a fireproof compartment shown in FIG. 31 and FIG. 32 are exposed to heat of fire, etc., even when the pipe 30 are deformed or destroyed by fire, a thermally expandable resin composition 600 at the inside of the metal unit 510 constituting the collar 500 is expanded to block the through hole provided at the compartment
Data Source
AI summary
A penetration structure for a fireproof compartment has a through hole(s) provided at a compartment and a pipe(s) penetrating through the through hole(s). A circumference of the pipe(s) is wound by an epoxy resin-containing thermally expandable resin composition sheet. The epoxy resin-containing thermally expandable resin composition sheet is a laminate of one or more epoxy resin-containing thermally expandable resin composition layers having at least one of linear grooves continuously formed and linear grooves intermittently formed, and two or more of the respective linear grooves being formed onto at least one surface of the epoxy resin-containing thermally expandable resin composition sheet with an interval, and one or more substrate layers. The epoxy-resin-containing thermally expandable resin composition sheet can be wound around the pipe by bending the sheet through use of the grooves even when the temperature is low.