Inorganic composite fireproof insulation board

Abstract

The invention discloses an inorganic composite fireproof insulation board. The method includes the steps that a heat preservation inner layer and waterproof and fireproof layers are included, and the two waterproof and fireproof layers are arranged on the two faces of the heat preservation inner layer respectively; the thermal insulation inner layer is formed by coating graphite polyphenyl particles with inorganic ultrafine powder or performing permeation adsorption and beating, the waterproof and fireproof layer is formed by paving and scraping polymer waterproof mortar, and the thermal insulation inner layer and the waterproof and fireproof layer are compounded into a whole in a self-bonding manner; the inorganic ultrafine powder comprises the following components in parts by weight: 20 parts of silica fume, 70 parts of 95-grade micro-expansion mineral powder, 2 parts of an inorganic rubber powder exciting agent and 8 parts of VAE emulsion; the polymer waterproof mortar comprises the following components in parts by weight: 30 parts of PO.525 cement, 10 parts of double fast cement, 50 parts of quartz sand, 2.5 parts of organic silica gel powder, 1.5 parts of a healing coupling agent, 0.5 part of a water-retaining agent and 5.5 parts of an efficient expanding agent. The thermal-insulation fireproof waterproof board has thermal-insulation, fireproof and waterproof performance, is excellent in performance, has excellent comprehensive physical performance and is good in integrity.

Description

Technical Field

[0001] The invention belongs to the field of building energy-saving materials, and in particular relates to an inorganic composite fireproof insulation board. Background Art

[0002] At present, the country has issued a new standard advocating 83% energy saving in buildings. The country's energy-saving requirements for exterior wall insulation systems are also becoming increasingly stringent. The fire protection design standards in the construction industry will definitely become higher and higher.

[0003] Existing thermal insulation materials include organic thermal insulation materials and inorganic thermal insulation materials. Among them, organic thermal insulation materials such as molded polystyrene boards, extruded polystyrene boards, polyurethane boards, etc. have the characteristics of light weight, good thermal insulation performance and excellent waterproof performance, but it is difficult to achieve ideal fire resistance; inorganic thermal insulation materials such as rock wool, vitrified microbead insulation mortar, foamed cement, perlite board, etc. have excellent fire resistance, but their thermal insulation performance is general and their waterproofness is far inferior to that of organic thermal insulation materials; many restrictive conditions such as height and combustion level are set in the relevant exterior wall insulation and fire protection specifications.

[0004] On the market, there are designs that add fireproof isolation belts to existing insulation materials, but such designs have the following drawbacks: ① The problem of thermal bridges: fireproof isolation belts use Class A insulation products, which are mostly inorganic materials. Compared with organic materials, they have high thermal conductivity, high water absorption, and poor insulation. ② Different materials have different linear expansion coefficients. In the temperature difference between day and night, the fireproof isolation belt is prone to bulging, cracking, and water seepage; ③ The system is not well matched, and there will be color difference between the fireproof isolation belt and the large wall, and the overall building appearance is not good; ④ Low mechanical strength: poor weather resistance, the physical properties will be greatly reduced after a few years, affecting the safety of the system. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an inorganic composite fireproof thermal insulation board which has thermal insulation, fireproof and waterproof properties, and has excellent performance, excellent comprehensive physical properties and good integrity.

[0006] To achieve the above objectives, the present invention proposes the following technical solutions: An inorganic composite fireproof thermal insulation board comprises a thermal insulation inner layer and a waterproof and fireproof layer. The waterproof and fireproof layer is provided with two layers, which are respectively arranged on the two sides of the thermal insulation inner layer; the thermal insulation inner layer is formed by coating graphite polystyrene particles with inorganic ultrafine powder or penetrating and adsorbing them, and the waterproof and fireproof layer is formed by spreading and scraping polymer waterproof mortar. The thermal insulation inner layer and the waterproof and fireproof layer are self-adhesive and composited into one.

[0007] The inorganic ultrafine powder comprises the following components in parts by weight: 20 parts of silica fume, 70 parts of 95-grade micro-expanded mineral powder, 2 parts of inorganic rubber powder activator, and 8 parts of VAE emulsion.

[0008] The polymer waterproof mortar includes the following components in parts by weight: 30 parts of PO.525 cement, 10 parts of double-fast cement, 50 parts of quartz sand, 2.5 parts of organic silica gel powder, 1.5 parts of healing coupling agent, 0.5 parts of water retaining agent, and 5.5 parts of high-efficiency expansion agent.

[0009] Preferably, the thickness of the waterproof and fireproof layer is in the range of 0.5 to 1 mm.

[0010] Preferably, the thickness ratio of the waterproof and fireproof layer to the overall inorganic composite fireproof and thermal insulation board is 0.1-0.2:10-40.

[0011] Preferably, the inorganic composite fireproof insulation board has an overall thickness of 150 mm and a surface density of 15-18 kg / m 2 .

[0012] The surface density of the inorganic composite fireproof insulation board is related to the thermal conductivity. The larger the surface density, the higher the thermal conductivity and the worse the thermal insulation performance. If the density is too low, the fireproof performance will deteriorate. Therefore, the appropriate surface density is closely related to the comprehensive performance of the inorganic composite fireproof insulation board.

[0013] The inorganic ultrafine powder mentioned in the present invention is an inorganic material with a particle size ranging from micron to nanometer; among the components of the inorganic ultrafine powder, silica ash, also known as microsilica powder, silicon micropowder or ultrafine silicon dioxide powder, is a by-product produced in a metallurgical electric furnace. Under high temperature conditions, SiO2 and Si gas are rapidly oxidized and condensed with oxygen in the air to form an ultrafine siliceous powder material; 95-grade micro-expanded mineral powder is a highly active mineral powder that improves physical and chemical properties; inorganic rubber powder activator is used to improve the adhesion and durability of the material; VAE emulsion is a copolymer emulsion of vinyl acetate and ethylene, and has excellent adhesion.

[0014] The thermal insulation inner layer is formed by coating graphite polystyrene particles with inorganic ultrafine powder or by infiltration adsorption and board forming, which can significantly improve the comprehensive performance of the material.

[0015] Through the coating and penetration of inorganic ultrafine powder, the surface properties of graphite polystyrene particles are optimized, so that the composite material can disperse stress more evenly during the stress process, reduce stress concentration, improve the compressive strength and tensile strength of the material, and enhance the overall toughness and impact resistance; the addition of inorganic ultrafine powder can effectively slow down the erosion of environmental factors on graphite polystyrene particles, extend the service life of the material, reduce the frequency of maintenance and replacement, reduce long-term use costs, and improve durability.

[0016] The coating layer of inorganic ultrafine powder can form a heat-insulating barrier in a high-temperature environment, preventing heat from directly acting on graphite polystyrene particles, slowing down their thermal decomposition and oxidation process, and improving thermal stability; through the coating of inorganic ultrafine powder, the roughness of the surface of graphite polystyrene particles is increased, increasing the contact area with the matrix material and improving the bonding performance; the addition of inorganic ultrafine powder can fill the tiny gaps between graphite polystyrene particles, forming a dense structure, effectively preventing moisture penetration and improving waterproof performance.

[0017] The particle size of inorganic ultrafine powder is in the range of micron to nanometer, with a large specific surface area and surface energy. A large number of highly active atoms or molecules are exposed on the surface of the powder, which can easily react or adsorb with water molecules in the environment. The inorganic ultrafine powder itself has good flame retardant properties. When coated on the surface of graphite polystyrene particles, it can release crystal water at high temperature, absorb a large amount of heat, reduce the surface temperature of the material, slow down the spread of flames, and enhance the fire resistance. The coating layer of inorganic ultrafine powder can improve the fluidity and formability of graphite polystyrene particles, making it easier to be extruded, injection molded or pressed into products of various shapes and sizes during processing, thereby improving processing performance.

[0018] Among the ingredients of polymer waterproof mortar, PO.525 cement is a kind of ordinary Portland cement with a 28-day compressive strength grade of 52.5MPa, which means that after 28 days of curing under standard conditions, its compressive strength should not be less than 52.5Mpa; double-fast cement is a kind of fast-hardening sulphoaluminate cement with rapid setting and hardening characteristics; organic silica gel powder is a high-performance powder material that combines the excellent properties of organic silicone such as lubricity, impact resistance, light diffusion and heat resistance; healing coupling agent is used to improve the compatibility and adhesion between different materials; high-efficiency expansion agent is a chemical substance that can cause volume expansion through physical and chemical reactions. It is mainly used in building materials to compensate for shrinkage during the hardening process, prevent cracking, and improve the crack resistance and durability of materials.

[0019] Polymer waterproof mortar has self-healing function and strong self-repair ability, which improves durability and enhances fire resistance. The combustion grade is A. At the same time, it also enhances waterproof performance and complies with the new regulations on exterior wall waterproofing: GB55030-2022 "General Waterproofing Code for Buildings and Municipal Engineering" for the overall waterproofing treatment of exterior walls.

[0020] The polymer waterproof mortar has adhesive properties and high bonding strength. It can effectively and tightly bond to the inner insulation layer to form an inorganic composite fireproof insulation board. It has high integrity, no hollows or leaks, is not easy to crack or fall off, has good safety and integrity, and has long-term stable performance, and has a very broad application prospect.

[0021] Inorganic composite fireproof insulation board, also known as AIF Black King Kong inorganic composite fireproof insulation board, AIF stands for AInorganic composite Fire prevention, which means A-grade inorganic composite fire prevention, and Black King Kong means black appearance, high strength and good fire resistance.

[0022] The beneficial effects of the present invention are: The thermal insulation inner layer of the present invention adopts inorganic ultrafine powder to coat graphite polystyrene particles or to form plates by infiltration adsorption. While retaining the excellent thermal insulation performance of organic materials, the thermal conductivity is reduced through a modified composite process, thereby greatly improving its own thermal insulation, fireproof and waterproof performance.

[0023] The waterproof and fireproof layer in the present invention is an inorganic material protective layer formed by paving and scraping a polymer waterproof mortar. The waterproof and fireproof layer is paved and coated on the upper and lower surfaces of the thermal insulation inner layer, further making the composite fireproof thermal insulation board firmly adhered to the base wall and the coating layer, forming a firmly adhered interface layer and a waterproof layer, and becoming a fireproof, waterproof, and anti-falling three-proof functional board without hollowing or leakage, not easy to crack or fall off, with good safety and integrity and long-term stable performance, and has a very broad application prospect.

[0024] The present invention cleverly combines organic materials and inorganic thermal insulation materials, solves the shortcomings of poor waterproof and thermal insulation performance of pure inorganic thermal insulation boards, and poor fireproof performance of pure organic thermal insulation materials, overcomes the shortcomings of poor quality control, complicated procedures, and long construction period during on-site construction, greatly simplifies the construction process, and meets the requirements of relevant fire protection regulations and new regulations on building exterior wall waterproofing.

[0025] By adopting the above scheme, the present invention can combine the performance of heat preservation, fire prevention and waterproofing, and has excellent performance, excellent comprehensive physical properties, good integrity and safety, and has a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 It is a structural schematic diagram of the present invention.

[0028] In the figure, 11 is a thermal insulation inner layer, and 12 is a waterproof and fireproof layer. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] First embodiment: like Figure 1 As shown, an inorganic composite fireproof thermal insulation board includes a thermal insulation inner layer 11 and a waterproof and fireproof layer 12. The waterproof and fireproof layer 12 has two layers, which are respectively arranged on the two sides of the thermal insulation inner layer 11; the thermal insulation inner layer 11 is formed by coating graphite polystyrene particles with inorganic ultrafine powder or penetrating and adsorbing them, and the waterproof and fireproof layer 12 is formed by spreading and scraping polymer waterproof mortar. The thermal insulation inner layer 11 and the waterproof and fireproof layer 12 are self-adhesive and composited into one.

[0034] The inorganic ultrafine powder comprises the following components in parts by weight: 20 parts of silica fume, 70 parts of 95-grade micro-expanded mineral powder, 2 parts of inorganic rubber powder activator, and 8 parts of VAE emulsion.

[0035] The polymer waterproof mortar includes the following components in parts by weight: 30 parts of PO.525 cement, 10 parts of double-fast cement, 50 parts of quartz sand, 2.5 parts of organic silica gel powder, 1.5 parts of healing coupling agent, 0.5 parts of water retaining agent, and 5.5 parts of high-efficiency expansion agent.

[0036] The thickness of the waterproof and fireproof layer 12 is in the range of 0.5 to 1 mm.

[0037] The inorganic composite fireproof insulation board has an overall thickness of 150 mm and a surface density of 15-18 kg / m 2 .

[0038] The inorganic composite fireproof insulation board provided in this embodiment is compared with the organic insulation material, the inorganic insulation material, the performance index, and the insulation material with the fireproof isolation belt added thereto, as follows: Table 1 Comparison of performance indicators of various materials

[0039] In Table 1, the inorganic composite fireproof insulation board is provided in this embodiment, the organic insulation material is molded polystyrene board, extruded polystyrene board, polyurethane board, etc., and the inorganic insulation material is rock wool, glass bead insulation mortar, foamed cement, perlite board, etc.

[0040] Thermal conductivity is an important indicator to measure the thermal insulation performance of materials. The lower the thermal conductivity, the better the thermal insulation performance of the material. Water absorption refers to the ability of a material to absorb water under certain conditions. It is an important indicator to measure the water absorption performance of a material. The lower the water absorption, the higher the waterproof performance. Water vapor permeability is an important indicator to measure the moisture permeability of a material. It indicates the amount of water vapor passing through a unit area and unit thickness of the material per unit time under certain temperature and humidity conditions. Materials with low water vapor permeability can effectively prevent moisture penetration and improve the waterproof performance and long-term durability of the material. Combustion performance is divided into four levels: A, B1, B2, and B3, among which Class A has the best fire resistance.

[0041] It can be seen from Table 1 that compared with organic thermal insulation materials and inorganic thermal insulation materials and thermal insulation materials with fireproof isolation belts added thereto, the inorganic composite fireproof thermal insulation board provided in this embodiment has overall good thermal insulation, fireproof and waterproof performance, and has good comprehensive physical properties, good integrity, excellent weather resistance, and has very broad application prospects.

[0042] Second embodiment: like Figure 1 As shown, an inorganic composite fireproof thermal insulation board includes a thermal insulation inner layer 11 and a waterproof and fireproof layer 12. The waterproof and fireproof layer 12 has two layers, which are respectively arranged on the two sides of the thermal insulation inner layer 11; the thermal insulation inner layer 11 is formed by coating graphite polystyrene particles with inorganic ultrafine powder or penetrating and adsorbing them, and the waterproof and fireproof layer 12 is formed by spreading and scraping polymer waterproof mortar. The thermal insulation inner layer 11 and the waterproof and fireproof layer 12 are self-adhesive and composited into one.

[0043] The inorganic ultrafine powder comprises the following components in parts by weight: 20 parts of silica fume, 70 parts of 95-grade micro-expanded mineral powder, 2 parts of inorganic rubber powder activator, and 8 parts of VAE emulsion.

[0044] The polymer waterproof mortar includes the following components in parts by weight: 30 parts of PO.525 cement, 10 parts of double-fast cement, 50 parts of quartz sand, 2.5 parts of organic silica gel powder, 1.5 parts of healing coupling agent, 0.5 parts of water retaining agent, and 5.5 parts of high-efficiency expansion agent.

[0045] The thickness of the waterproof and fireproof layer 12 is in the range of 0.5 to 1 mm.

[0046] The inorganic composite fireproof insulation board has an overall thickness of 150 mm and a surface density of 15 kg / m 2 .

[0047] Third embodiment: like Figure 1 As shown, an inorganic composite fireproof thermal insulation board includes a thermal insulation inner layer 11 and a waterproof and fireproof layer 12. The waterproof and fireproof layer 12 has two layers, which are respectively arranged on the two sides of the thermal insulation inner layer 11; the thermal insulation inner layer 11 is formed by coating graphite polystyrene particles with inorganic ultrafine powder or penetrating and adsorbing them, and the waterproof and fireproof layer 12 is formed by spreading and scraping polymer waterproof mortar. The thermal insulation inner layer 11 and the waterproof and fireproof layer 12 are self-adhesive and composited into one.

[0048] The inorganic ultrafine powder comprises the following components in parts by weight: 20 parts of silica fume, 70 parts of 95-grade micro-expanded mineral powder, 2 parts of inorganic rubber powder activator, and 8 parts of VAE emulsion.

[0049] The polymer waterproof mortar includes the following components in parts by weight: 30 parts of PO.525 cement, 10 parts of double-fast cement, 50 parts of quartz sand, 2.5 parts of organic silica gel powder, 1.5 parts of healing coupling agent, 0.5 parts of water retaining agent, and 5.5 parts of high-efficiency expansion agent.

[0050] The thickness of the waterproof and fireproof layer 12 is in the range of 0.5 to 1 mm.

[0051] The inorganic composite fireproof insulation board has an overall thickness of 150 mm and a surface density of 18 kg / m 2 .

[0052] According to the contents of the second to third embodiments, the following comparative examples are designed: The first comparison: The difference from the second embodiment is that the surface density of the inorganic composite fireproof insulation board is 13kg / m 2 .

[0053] Second comparison: The difference from the second embodiment is that the surface density of the inorganic composite fireproof insulation board is 21kg / m 2 .

[0054] The third comparison ratio: The difference from the second embodiment is that the surface density of the inorganic composite fireproof insulation board is 23kg / m 2 .

[0055] The fourth comparison ratio: The difference from the second embodiment is that the surface density of the inorganic composite fireproof insulation board is 25kg / m 2 .

[0056] For the first and second embodiments, and the first to fourth comparative examples, various performance indicators were tested, and the test data are as follows: Table 2 Comparison of performance indicators of inorganic composite fireproof insulation board with an overall thickness of 150 mm

[0057] It can be seen from Table 2 that in the second and third embodiments, the surface density of the inorganic composite fireproof insulation board with an overall thickness of 150 mm is 15-18 kg / ㎡, the thermal conductivity is within 0.045-0.050 W / (m·K), the dimensional stability is within 1.0-1.2%, the water absorption is within 1.44-1.46%, the water vapor permeability coefficient is stable within 3.7-4.1 ng / (Pa·m·s), the combustion performance is A2, and the thermal insulation, waterproof and fireproof properties are all excellent.

[0058] In the first comparative example, the inorganic composite fireproof thermal insulation board has an overall thickness of 150 mm and a surface density of 13 kg / ㎡, and its combustion performance is inferior to that of the second and third embodiments.

[0059] In the second to fourth comparative examples, the inorganic composite fireproof insulation board with an overall thickness of 150 mm has a surface density of 21-25 kg / ㎡, a thermal conductivity greater than 0.050 W / (m·K), a water absorption rate higher than 1.5%, and thermal insulation and waterproof properties are inferior to those of the second and third embodiments.

[0060] In summary, the inorganic composite fireproof insulation board with an overall thickness of 150 mm and a surface density of 15-18 kg / ㎡ has excellent overall thermal insulation, waterproof and fireproof properties and is suitable for wide use.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An inorganic composite fireproof insulation board, comprising an insulation inner layer, characterized in that: It also includes a waterproof and fireproof layer, which has two layers and is respectively arranged on the two sides of the thermal insulation inner layer; the thermal insulation inner layer is formed by coating graphite polystyrene particles with inorganic superfine powder or penetrating and adsorbing them, and the waterproof and fireproof layer is formed by paving and scraping polymer waterproof mortar, and the thermal insulation inner layer and the waterproof and fireproof layer are self-adhesive and composited into one; the inorganic superfine powder includes the following components in parts by weight: 20 parts of silica fume, 70 parts of 95-grade micro-expanding mineral powder, 2 parts of inorganic glue powder activator, and 8 parts of VAE emulsion; the polymer waterproof mortar includes the following components in parts by weight: 30 parts of PO.525 cement, 10 parts of double-fast cement, 50 parts of quartz sand, 2.5 parts of organic silica gel powder, 1.5 parts of healing coupling agent, 0.5 parts of water retaining agent, and 5.5 parts of high-efficiency expansion agent.

2. The inorganic composite fireproof insulation board according to claim 1, characterized in that: The thickness of the waterproof and fireproof layer ranges from 0.5 to 1 mm.

3. The inorganic composite fireproof insulation board according to claim 1, characterized in that: The thickness ratio of the waterproof and fireproof layer to the composite fireproof and thermal insulation board as a whole is 0.1-0.2:10-40.

4. The inorganic composite fireproof insulation board according to claim 1, characterized in that: The inorganic composite fireproof insulation board has an overall thickness of 150 mm and a surface density of 15-18 kg / m 2 .

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