Novel material microwave foaming floor heating plate

Abstract

This invention discloses a novel microwave-foamed underfloor heating board, belonging to the fields of building insulation, underfloor heating systems, and fireproofing and heat insulation technology. The board consists of an inorganic silica gel closed-cell foam insulation core board, a metal steel plate layer composited on one side of the core board, and a composite layer of waterproof mortar and alkali-resistant mesh fabric composited on the other side of the core board. Underfloor heating pipe installation grooves are formed on the surface of the metal steel plate layer, with a groove spacing of 20 cm. The core board uses inorganic silica such as quartz sand, river sand, and various slags as the silicon source, and is manufactured through sol modification, gelation, microwave foaming, and infrared curing. It has a closed-cell porous structure, providing excellent sound absorption. The metal steel plate conducts heat rapidly and simultaneously forms a double sound insulation structure with the waterproof mortar composite layer, achieving integrated sound absorption and insulation. This invention, made entirely of inorganic materials, meets the A1 fire resistance standard and combines the advantages of insulation, waterproofing, high strength, convenient construction, and environmental friendliness. Its overall performance is superior to traditional materials such as rock wool and glass wool. Suitable for densely populated places such as schools, hospitals, airports, stadiums, and commercial centers, as well as for fireproofing, heat insulation, and noise reduction of airplanes, subways, high-speed trains, and ships.

Description

Technical Field

[0001] This invention belongs to the technical field of building insulation, underfloor heating systems, fireproofing, heat insulation and acoustic materials. Specifically, it relates to an inorganic silicon gel-based, microwave-foamed underfloor heating insulation board with a grooved steel plate on one side and a waterproof mortar mesh fabric composite layer on the other side, which combines A1-level fire resistance, high-efficiency heat insulation, sound absorption and sound insulation, and its preparation process. Background Technology

[0002] Existing underfloor heating insulation boards are mostly made of organic foams such as EPS and XPS, which have drawbacks such as low fire resistance, easy release of harmful gases at high temperatures, poor durability, and lack of sound absorption and insulation capabilities. Inorganic materials such as rock wool and glass wool have problems such as high water absorption, easy pulverization, low strength, poor acoustic performance, and high dust generation during construction. At the same time, conventional underfloor heating boards lack an integrated waterproof, heat-conducting, and load-bearing composite structure, and the on-site grooving of pipe channels is inefficient and lacks precision.

[0003] In densely populated areas such as schools, hospitals, airports, stadiums, commercial centers, and rail transit systems, there are not only mandatory requirements for A1 fire resistance, but also extremely high demands for sound absorption, sound insulation, and a quiet environment. However, existing underfloor heating panels generally lack active sound absorption and structural sound insulation functions, failing to meet the comprehensive requirements of modern buildings for comfort, quietness, safety, and energy efficiency. Therefore, there is an urgent need for a new type of underfloor heating insulation panel that is A1 fire-resistant, water-repellent and moisture-proof, high-strength, has rapid heat conduction, integrates sound absorption and sound insulation, and is compatible with prefabricated construction methods. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a novel microwave-foamed underfloor heating board. Using inorganic silicon dioxide as the silicon source, a closed-cell, porous silica gel foam insulation core board is formed through microwave foaming and infrared curing. One side of the core board is composited with a metal steel plate, and underfloor heating pipe installation grooves with a spacing of 20 cm are formed on the surface of the steel plate. The other side of the core board is composited with a waterproof mortar and alkali-resistant mesh fabric. This invention achieves sound absorption through the porous structure of the core material and sound insulation through the double dense layers of steel plate and waterproof mortar. It also features A1 fire resistance, rapid heat conduction, excellent thermal insulation, waterproofing and moisture resistance, high structural strength, and convenient construction, making it suitable for buildings and transportation vehicles with high fire resistance and high acoustic requirements. Attached Figure Description Figure 1 This is a schematic diagram of the overall three-dimensional structure of the floor heating board of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the floor heating board AA of the present invention. Numbering on the map: 1 — Metal steel plate layer 2 — Inorganic silica gel closed-cell foam insulation core board 3 — Waterproof mortar and alkali-resistant mesh composite layer 4 — Underfloor heating pipe installation groove.

Claims

1. A novel type of microwave-foamed underfloor heating board, characterized in that, The product comprises an inorganic silica gel closed-cell foam insulation core board, a metal steel plate layer laminated on one side of the core board, and a waterproof mortar and alkali-resistant mesh composite layer laminated on the other side of the core board. The surface of the metal steel plate layer has 20 cm spacing grooves for installing underfloor heating pipes. The inorganic silica gel closed-cell foam insulation core board uses inorganic silica as the silicon source and is manufactured through sol modification, gelation, microwave foaming, and infrared curing. It has a closed-cell porous structure and sound absorption function. The metal steel plate layer and the waterproof mortar and mesh composite layer together form a double sound insulation structure, giving the underfloor heating board both sound absorption and sound insulation effects.

2. The underfloor heating board according to claim 1, characterized in that, The inorganic silicon oxide source is selected from one or more combinations of quartz sand, river sand, Gobi sand, lithium slag, polycrystalline silicon slag, and asbestos slag.

3. The underfloor heating board according to claim 1, characterized in that, The metal steel plate is a galvanized steel plate, an aluminized zinc steel plate, or a stainless steel sheet, which has a fast heat conduction speed and also has sound insulation and heat reflection functions.

4. The underfloor heating board according to claim 1, characterized in that, The alkali-resistant mesh is an alkali-resistant glass fiber mesh, which is embedded in waterproof mortar to form a waterproof, crack-resistant, and sound-insulating surface layer.

5. The underfloor heating board according to claim 1, characterized in that, The underfloor heating pipe installation groove is a U-shaped groove or a rectangular groove, and the groove width and depth are matched with the outer diameter of the underfloor heating pipe.

6. A method for preparing a novel microwave-foamed underfloor heating board according to any one of claims 1-5, characterized in that, Includes the following steps: (1) Using inorganic silicon oxide as the silicon source, active silicon powder is obtained by crushing, sieving and removing impurities; (2) Prepare modified silica sol by mixing active silica powder with modifier, activator and foam stabilizer; (3) Silica sol is injected into the mold to gel and form a wet preform; (4) A foam preform with a closed-cell porous sound-absorbing structure is formed by microwave foaming; (5) Infrared curing, dehydration and shaping are performed to obtain silicone gel foam insulation core board; (6) A composite metal steel plate is laid on one side of the core board, and an alkali-resistant mesh cloth is laid on the other side and waterproof mortar is applied to form a composite board; (7) Install the floor heating pipes on the surface of the metal steel plate layer at 20 cm intervals to obtain the finished floor heating board.

7. The preparation method according to claim 6, characterized in that, Microwave foaming temperature is 60-120℃, infrared curing temperature is 100-180℃, and the moisture content after curing is ≤5%.

8. The application of the underfloor heating board according to any one of claims 1-5, characterized in that, It is used in A1-grade fireproof, heat-insulating, sound-absorbing, and sound-insulating underfloor heating systems for schools, hospitals, airports, stadiums, government office buildings, and commercial centers, as well as in the fields of fireproofing, heat insulation, and noise reduction for buildings, airplanes, subways, high-speed trains, and ships.

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