Thermal resistant multilayer heat insulating construction material

Abstract

To provide a construction material that is a heat insulating material and has high strength for building structures.SOLUTION: A thin intermediate layer can provide boundary conditions. An air layer structure can be easily created using soft plastic. By adding beams, reinforcement bars, and fibers in a crosswise manner to this air layer structure, strength can be greatly increased. The crossed fibers are suitable for creating an air layer structure, which can significantly improve compressive and tensile strength of construction materials. In addition, to increase structural strength, intersections of beams, reinforcement bars, and fibers are used as joints. This allows us to select materials that are suitable not only for heat insulation and strength but also for a manufacturing process and recycling.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This invention relates to a construction material that achieves high thermal insulation properties by incorporating an intermediate thermal resistance layer based on thermal resistance theory. Furthermore, by arranging metal or resin fibers in a cross pattern to create an air layer that acts as an intermediate thermal resistance layer, this construction material has high structural strength while also being an insulating material. [Background technology]

[0002] Insulating building materials are generally made of closed-cell polystyrene resin and are single-layered products, with some products having aluminum foil attached to the surface. Since closed-cell polystyrene foam (product name: DuPont Styrofoam (registered trademark)) is single-layered, theoretically it simply needed to be thicker to achieve insulating performance. This meant that buildings had to be larger. Furthermore, because of its closed-cell structure, closed-cell polystyrene resin is brittle and has low compressive strength and tensile strength. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2023-162981 Non-flammable heat insulating material An artificial lightweight non-flammable heat insulating material characterized by being made by compressing crushed pieces of foam whose main ingredients are calcium carbonate containing polyvinyl chloride resin and inorganic fibers into a crushed shape, giving it inherent resilience. [Patent Document 2] Patent Publication No. 2020-0978842016 We propose a building material panel that can efficiently construct roofs and walls with flat outer surfaces while ensuring excellent insulation, airtightness, and ease of installation. [Patent Document 3] JP 2019-138107 A Thermal Insulation Panel and Externally Insulated Wall Structure The objective is to provide a thermal insulation panel with excellent bending strength. Also, the objective is to provide an externally insulated wall structure with excellent earthquake resistance. Summary of the Invention [Problem to be solved by the invention]

[0004] The physical formula for thermal resistance in insulation is Equation 1, which is the thermal ohm series equation, Equation 2. Thermal resistance R=dthickness / λThermal conductivity Rt=R1+R2+··+Rn (Equation 2) To obtain high thermal insulation, it is necessary to increase the thermal resistance, and the same material requires a thickness that increases the thermal resistance. The gas phase has great insulating properties. Therefore, in refrigerators where insulation is required and small dimensions are required, vacuum or air panels are used, and insulated water bottles, vacuum structures are used. However, the joints are not insulated, so the effect is greatly reduced. Current closed-cell polystyrene resin materials have a closed-cell structure, which means they cannot achieve high compressive or tensile strength. Therefore, many multi-layer composite processed bodies have been devised, but they have poor thermal insulation. The gas phase has high thermal insulation properties, but no strength at all. [Means for solving the problem]

[0005] In terms of thermal resistance, if a boundary condition such as air is applied between insulating materials, it is expressed by Equation 2, which significantly increases the thermal resistance and improves the insulating performance. In other words, if there is a thin intermediate layer, the boundary condition can be applied. An air layer structure can be easily applied using soft plastic.

[0006] Furthermore, adding beams, reinforcing bars, and fibers in a crosswise pattern to this air layer structure can significantly increase its strength. Crossed fibers are suitable for creating an air layer structure and can significantly improve the compressive and tensile strength of building materials. Although the strength of fibers varies depending on the material, such as metal, glass, or plastic, they improve both compressive and tensile strength regardless of the material. Furthermore, the intersections of beams, reinforcing bars, and fibers are used as junctions to increase structural strength. This allows for the selection of materials that are suitable not only for insulation and strength, but also for manufacturing processes and recycling.

[0007] In the past, single-layer manufacturing offered significant advantages in terms of production, but advances in processing technology have made it possible to create complex structures at low cost.

[0008] This invention provides a construction material that has high thermal insulation properties due to an air layer that creates boundary conditions that result in thermal resistance, and also has high compressive and tensile strength due to the addition of fibers in a cross-shaped manner to the air layer structure. [Effects of the Invention]

[0009] This invention contributes to energy and resource conservation in the building environment. It also improves the strength of buildings and increases earthquake resistance, which is an issue in earthquake-prone Japan. The temperature and earthquake resistance of living spaces contribute to the health, life, and livelihood of the people. This is a device that simultaneously improves the insulation and structural strength of buildings. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a structural diagram and cross-sectional view of a heat-insulating building material to which a heat-resistant intermediate layer is added. [Figure 2] FIG. 2 is a plan view showing the structure of the thermal resistance intermediate layer of the present invention. [Figure 3] FIG. 2 is a structural diagram and perspective view of the heat-resistant construction material of the present invention. [Explanation of symbols]

[0011] 1. Thermal insulation layer (solid phase) 2. Thermal resistance layer (vapor phase composite) 3. Insulation layer (solid phase) 4 Air Layer 5 Strengthening structural fibers 6 Fiber bonding points

Claims

[Claim 1] This building material achieves high thermal insulation performance through a multi-layer structure that applies thermal resistance theory. In addition, by arranging metal or resin fibers in a cross pattern in the structure that forms an air layer that acts as a thermal resistance layer in the middle, it is a construction material that provides high strength for building structures while also being an insulating material.

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