Heat-preservation heat-insulation anti-crack sound-absorption material for interior and exterior walls of building

Abstract

The invention relates to the technical field of wall thermal insulation materials, in particular to a thermal insulation anti-crack sound absorption material for inner and outer walls of a building. According to the technical scheme, the self-excitation fire extinguishing material is prepared from the following raw materials in parts by weight: 90 to 110 parts of white cement, 190 to 210 parts of calcium powder, 30 to 40 parts of asbestos wool, 10 to 15 parts of attapulgite, 20 to 30 parts of hard perlite, 0.1 to 0.8 part of hydroxypropyl methylcellulose, 1 to 1.5 parts of rubber powder, 0.1 to 0.8 part of magnesium fluosilicate and 22 to 40 parts of self-excitation fire extinguishing composition. The self-excitation fire-extinguishing composite material has the advantages of high strength, good flame retardance, energy conservation, environmental protection, good sound insulation and good heat preservation, the self-excitation fire-extinguishing composite material can play a fire-extinguishing role when a fire disaster occurs, fire extinguishing is carried out in time, the fireproof safety of a building is improved, and the property safety is greatly guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of wall thermal insulation materials, in particular to a thermal insulation, heat-insulating, crack-resistant and sound-absorbing material for interior and exterior walls of buildings. Background Art

[0002] In the laboratory, high-precision detection equipment has strict requirements on the temperature environment, and temperature changes will affect the detection accuracy of the equipment. Therefore, the thermal insulation of the laboratory walls is particularly important. The existing wall insulation materials basically meet the thermal insulation requirements, but these insulation materials have relatively large defects. The fire resistance of these insulation materials is poor. Heating and burning test operations will be carried out in the laboratory working environment. Once a fire occurs, the damage to those high-precision detection instruments is very large, causing huge property losses. Fire safety and fire extinguishing are particularly important. Therefore, the present application proposes a thermal insulation, heat insulation, crack resistance and sound absorption material for interior and exterior walls of buildings. Summary of the invention

[0003] The purpose of the present invention is to address the problem that existing wall insulation materials in the background technology have poor fireproof performance and do not have fire extinguishing function, and to propose a thermal insulation, heat insulation, crack-resistant and sound-absorbing material for interior and exterior walls of buildings.

[0004] The technical solution of the present invention is: a thermal insulation, crack-resistant and sound-absorbing material for interior and exterior walls of buildings, comprising the following raw materials in parts by weight: 90-110 parts of white cement, 190-210 parts of calcium powder, 30-40 parts of asbestos wool, 10-15 parts of attapulgite, 20-30 parts of hard perlite, 0.1-0.8 parts of hydroxypropyl methylcellulose, 1-1.5 parts of rubber powder, 0.1-0.8 parts of magnesium fluorosilicate, and 22-40 parts of a self-excited fire extinguishing composition;

[0005] The self-exciting fire extinguishing composition comprises expanded graphite powder, ammonium polyphosphate and magnesium hydroxide.

[0006] Optionally, the weight ratio of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide in the self-igniting fire extinguishing composition is 3:2:1.

[0007] Through the above scheme, a self-excited fire extinguishing composition composed of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide mixed in a certain proportion can play a fire extinguishing role when a fire occurs in the material, and the fire is extinguished in time, thereby improving the fire safety of the building. At the same time, it also improves the hardness, high strength, good flame retardancy, energy saving and environmental protection, sound insulation and thermal insulation of the thermal insulation, heat insulation, crack resistance and sound absorption materials used for the interior and exterior walls of the building.

[0008] Optionally, the following raw materials are included in parts by weight: 95-105 parts of white cement, 195-205 parts of calcium powder, 32-38 parts of asbestos wool, 12-15 parts of attapulgite, 22-28 parts of hard perlite, 0.2-0.7 parts of hydroxypropyl methylcellulose, 1.1-1.4 parts of rubber powder, 0.2-0.7 parts of magnesium fluorosilicate, and 25-38 parts of self-ignition fire extinguishing composition.

[0009] Optionally, the following raw materials are included in parts by weight: 100 parts of white cement, 200 parts of calcium powder, 35 parts of asbestos wool, 12 parts of attapulgite, 25 parts of hard perlite, 0.5 parts of hydroxypropyl methylcellulose, 1.3 parts of rubber powder, 0.5 parts of magnesium fluorosilicate, and 31 parts of a self-excited fire extinguishing composition.

[0010] Optionally, the specific preparation method of the sound absorbing material comprises the following steps:

[0011] S1. Weigh the following parts by weight to prepare the raw materials:

[0012] White cement: 90-110 parts, calcium powder: 190-210 parts, asbestos wool: 30-40 parts, attapulgite: 10-15 parts, hard perlite: 20-30 parts, hydroxypropyl methylcellulose: 0.1-0.8 parts, rubber powder: 1-1.5 parts, magnesium fluorosilicate: 0.1-0.8 parts, self-excited fire extinguishing composition: 22-40 parts;

[0013] The weight ratio of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide in the self-excitation fire extinguishing composition is 3:2:1; the expanded graphite powder, ammonium polyphosphate and magnesium hydroxide are mixed evenly by a stirrer to obtain a self-excitation fire extinguishing composition;

[0014] S2. Mixed dry material: white cement, calcium powder, asbestos wool, attapulgite, and hard perlite are placed in a dry powder mixer to obtain a mixed dry material;

[0015] S3. Preparation of slurry:

[0016] S301. The hydroxypropyl methylcellulose, rubber powder, magnesium fluorosilicate are added to 120-320 parts by weight of water and stirred to prepare a mixed solution;

[0017] S302. The mixture is slowly added to the mixed dry material while stirring at a speed of 30-40 rpm for 20-30 minutes to fully mix the materials to form a slurry;

[0018] S4. The self-excited fire extinguishing composition composed of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide is added to the slurry and stirred at a speed of 20-30 rpm for 10-15 minutes to uniformly disperse the self-excited fire extinguishing composition in the slurry;

[0019] S5. Pour the mixed slurry into a mold and let it stand at room temperature for 24-48 hours to solidify it into shape; the molded material is cured at a temperature of 20-25°C for 7-14 days to obtain a thermal insulation, heat insulation, crack resistance and sound absorption material for interior and exterior walls of a building.

[0020] Optionally, in S2, the mixer stirs and mixes at a speed of 20-30 rpm for 15-20 minutes.

[0021] Optionally, in S5, the curing molding temperature is 25-30°C.

[0022] Optionally, in S5, the relative humidity of the molded material is 60%-80%.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] The invention has the advantages of high strength, good flame retardancy, energy saving and environmental protection, good sound insulation and thermal insulation. The self-excited fire extinguishing composition composed of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide mixed in a certain proportion can play a fire extinguishing role when a fire occurs in the material, extinguish the fire in time, improve the fire safety of the building, and greatly protect the property safety.

[0025] Furthermore, expanded graphite powder will expand rapidly when heated to form a heat-insulating and oxygen-isolating carbon layer, which can effectively prevent the spread of fire. By making it account for a relatively high proportion in the fire-extinguishing composition, its characteristics of rapid expansion to form a heat-insulating layer can be fully utilized to provide the primary barrier for fire extinguishing. Ammonium polyphosphate decomposes at high temperature to produce phosphoric acid, and phosphoric acid is further dehydrated to form polymetaphosphoric acid, which can carbonize organic matter to form a non-volatile protective carbon layer to isolate oxygen. Ammonium polyphosphate can enhance the carbonization effect and improve the durability of fire extinguishing in the fire-extinguishing composition. Magnesium hydroxide is decomposed by heat to produce water vapor and magnesium oxide. Water vapor can reduce the flame temperature, and magnesium oxide can form a heat-insulating layer. Magnesium hydroxide can provide water vapor cooling during the fire extinguishing process, and the heat-insulating layer of magnesium oxide can also play an auxiliary fire extinguishing effect. DETAILED DESCRIPTION

[0026] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0027] Example 1

[0028] The specific preparation method of the thermal insulation, crack-resistant and sound-absorbing material for building interior and exterior walls comprises the following steps:

[0029] S1. Weigh the following parts by weight to prepare the raw materials:

[0030] White cement: 90kg, calcium powder: 190kg, asbestos wool: 30kg, attapulgite: 10kg, hard perlite: 20kg, hydroxypropyl methylcellulose: 0.1kg, rubber powder: 1kg, magnesium fluorosilicate: 0.1kg, self-excited fire extinguishing composition: 22kg;

[0031] The weight ratio of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide in the self-excitation fire extinguishing composition is 3:2:1, and the expanded graphite powder, ammonium polyphosphate and magnesium hydroxide are mixed uniformly by a stirrer to obtain a self-excitation fire extinguishing composition;

[0032] S2. Mixed dry material: white cement, calcium powder, asbestos wool, attapulgite, hard perlite were placed in a dry powder mixer, and the mixer was stirred at a speed of 20 rpm for 15 minutes to obtain a mixed dry material;

[0033] S3. Preparation of slurry:

[0034] S301. The hydroxypropyl methylcellulose, rubber powder, magnesium fluorosilicate was added to 120kg of water and stirred to prepare a mixed solution;

[0035] S302. The mixture was slowly added to the mixed dry material while stirring at a speed of 30 rpm for 20 minutes to fully mix the materials to form a slurry;

[0036] S4. The self-excited fire extinguishing composition composed of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide was added to the slurry and stirred at a speed of 20 rpm for 10 minutes to uniformly disperse the self-excited fire extinguishing composition in the slurry;

[0037] S5. Pour the mixed slurry into a mold, let it stand at room temperature for 24 hours, and solidify it at a temperature of 25°C; the relative humidity of the molded material is 60%, and it is cured at a temperature of 20°C for 7 days to obtain a thermal insulation, heat insulation, crack resistance and sound absorption material for interior and exterior walls of buildings.

[0038] Example 2

[0039] The specific preparation method of the thermal insulation, crack-resistant and sound-absorbing material for building interior and exterior walls comprises the following steps:

[0040] S1. Weigh the following parts by weight to prepare the raw materials:

[0041] White cement: 95kg, calcium powder: 195kg, asbestos wool: 33kg, attapulgite: 12kg, hard perlite: 22kg, hydroxypropyl methylcellulose: 0.3kg, rubber powder: 1.2kg, magnesium fluorosilicate: 0.3kg, self-excited fire extinguishing composition: 25kg;

[0042] The weight ratio of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide in the self-excitation fire extinguishing composition is 3:2:1, and the expanded graphite powder, ammonium polyphosphate and magnesium hydroxide are mixed uniformly by a stirrer to obtain a self-excitation fire extinguishing composition;

[0043] S2. Mixed dry material: white cement, calcium powder, asbestos wool, attapulgite, hard perlite were placed in a dry powder mixer, and the mixer was stirred at a speed of 22 rpm for 16 minutes to obtain a mixed dry material;

[0044] S3. Preparation of slurry:

[0045] S301. The hydroxypropyl methylcellulose, rubber powder, magnesium fluorosilicate was added to 160kg of water and stirred to prepare a mixed solution;

[0046] S302. The mixture was slowly added to the mixed dry material while stirring at a speed of 32 rpm for 22 minutes to fully mix the materials to form a slurry;

[0047] S4. The self-excited fire extinguishing composition composed of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide was added to the slurry and stirred at a speed of 22 rpm for 12 minutes to uniformly disperse the self-excited fire extinguishing composition in the slurry;

[0048] S5. Pour the mixed slurry into a mold, let it stand at room temperature for 28 hours, and solidify it at a temperature of 26°C; the relative humidity of the molded material is 65%, and it is cured at a temperature of 21°C for 8 days to obtain a thermal insulation, heat insulation, crack resistance and sound absorption material for interior and exterior walls of buildings.

[0049] Example 3

[0050] The specific preparation method of the thermal insulation, crack-resistant and sound-absorbing material for building interior and exterior walls comprises the following steps:

[0051] S1. Weigh the following parts by weight to prepare the raw materials:

[0052] 100kg white cement, 200kg calcium powder, 35kg asbestos wool, 12kg attapulgite, 25kg hard perlite, 0.5kg hydroxypropyl methylcellulose, 1.3kg rubber powder, 0.5kg magnesium fluorosilicate, 31kg self-ignition fire extinguishing composition;

[0053] The weight ratio of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide in the self-excitation fire extinguishing composition is 3:2:1, and the expanded graphite powder, ammonium polyphosphate and magnesium hydroxide are mixed uniformly by a stirrer to obtain a self-excitation fire extinguishing composition;

[0054] S2. Mixed dry material: white cement, calcium powder, asbestos wool, attapulgite, hard perlite were placed in a dry powder mixer, and the mixer was stirred at a speed of 25 rpm for 18 minutes to obtain a mixed dry material;

[0055] S3. Preparation of slurry:

[0056] S301. The hydroxypropyl methylcellulose, rubber powder, magnesium fluorosilicate was added to 220kg of water and stirred to prepare a mixed solution;

[0057] S302. The mixture was slowly added to the mixed dry material while stirring at a speed of 35 rpm for 25 minutes to fully mix the materials to form a slurry;

[0058] S4. Add the self-exciting fire extinguishing composition composed of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide to the slurry, and stir at a speed of 25 rpm for 13 minutes to uniformly disperse the self-exciting fire extinguishing composition in the slurry.

[0059] S5. Pour the mixed slurry into a mold, let it stand at room temperature for 36 hours, and solidify it at a temperature of 28°C; the relative humidity of the molded material is 70%, and it is cured at a temperature of 23°C for 11 days to obtain a thermal insulation, heat insulation, anti-cracking and sound-absorbing material for interior and exterior walls of buildings.

[0060] Example 4

[0061] The specific preparation method of the thermal insulation, crack-resistant and sound-absorbing material for building interior and exterior walls comprises the following steps:

[0062] S1. Weigh the following parts by weight to prepare the raw materials:

[0063] White cement: 105kg, calcium powder: 205kg, asbestos wool: 38kg, attapulgite: 14kg, hard perlite: 28kg, hydroxypropyl methylcellulose: 0.6kg, rubber powder: 1.4kg, magnesium fluorosilicate: 0.6kg, self-excited fire extinguishing composition: 35kg;

[0064] The weight ratio of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide in the self-excitation fire extinguishing composition is 3:2:1, and the expanded graphite powder, ammonium polyphosphate and magnesium hydroxide are mixed uniformly by a stirrer to obtain a self-excitation fire extinguishing composition;

[0065] S2. Mixed dry material: white cement, calcium powder, asbestos wool, attapulgite, hard perlite were placed in a dry powder mixer, and the mixer was stirred at a speed of 28 rpm for 18 minutes to obtain a mixed dry material;

[0066] S3. Preparation of slurry:

[0067] S301. The hydroxypropyl methylcellulose, rubber powder, magnesium fluorosilicate was added to 282kg of water and stirred to prepare a mixed solution;

[0068] S302. The mixture was slowly added to the mixed dry material while stirring at a speed of 38 rpm for 28 minutes to fully mix the materials to form a slurry;

[0069] S4. Add the self-exciting fire extinguishing composition composed of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide to the slurry, and stir at a speed of 28 rpm for 14 minutes to evenly disperse the self-exciting fire extinguishing composition in the slurry.

[0070] S5. Pour the mixed slurry into a mold, let it stand at room temperature for 40 hours, and solidify it at a temperature of 28°C; the relative humidity of the molded material is 75%, and it is cured at a temperature of 24°C for 13 days to obtain a thermal insulation, heat insulation, anti-cracking and sound-absorbing material for interior and exterior walls of buildings.

[0071] Example 5

[0072] The specific preparation method of the thermal insulation, crack-resistant and sound-absorbing material for building interior and exterior walls comprises the following steps:

[0073] S1. Weigh the following parts by weight to prepare the raw materials:

[0074] White cement: 110kg, calcium powder: 210kg, asbestos wool: 40kg, attapulgite: 15kg, hard perlite: 30kg, hydroxypropyl methylcellulose: 0.8kg, rubber powder: 1.5kg, magnesium fluorosilicate: 0.8kg, self-excited fire extinguishing composition: 40kg;

[0075] The weight ratio of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide in the self-excitation fire extinguishing composition is 3:2:1, and the expanded graphite powder, ammonium polyphosphate and magnesium hydroxide are mixed uniformly by a stirrer to obtain a self-excitation fire extinguishing composition;

[0076] S2. Mixed dry material: white cement, calcium powder, asbestos wool, attapulgite, hard perlite were placed in a dry powder mixer, and the mixer was stirred at a speed of 30 rpm for 20 minutes to obtain a mixed dry material;

[0077] S3. Preparation of slurry:

[0078] S301. The hydroxypropyl methylcellulose, rubber powder, magnesium fluorosilicate was added to 320kg of water and stirred to prepare a mixed solution;

[0079] S302. The mixture was slowly added to the mixed dry material while stirring at 40 rpm for 30 minutes to fully mix the materials to form a slurry;

[0080] S4. Add the self-exciting fire extinguishing composition composed of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide to the slurry, and stir at a speed of 30 rpm for 15 minutes to evenly disperse the self-exciting fire extinguishing composition in the slurry.

[0081] S5. Pour the mixed slurry into a mold, let it stand at room temperature for 48 hours, and solidify it at a temperature of 30°C; the relative humidity of the molded material is 80%, and it is cured at a temperature of 25°C for 14 days to obtain a thermal insulation, heat insulation, anti-cracking and sound-absorbing material for interior and exterior walls of buildings.

[0082] Comparative Example 1

[0083] The specific preparation method of the thermal insulation, crack-resistant and sound-absorbing material for building interior and exterior walls comprises the following steps:

[0084] S1. Weigh the following parts by weight to prepare the raw materials:

[0085] 100kg white cement, 200kg calcium powder, 35kg asbestos wool, 12kg attapulgite, 25kg hard perlite, 0.5kg hydroxypropyl methylcellulose, 1.3kg rubber powder, 0.5kg magnesium fluorosilicate;

[0086] S2. Mixed dry material: white cement, calcium powder, asbestos wool, attapulgite, hard perlite were placed in a dry powder mixer, and the mixer was stirred at a speed of 25 rpm for 18 minutes to obtain a mixed dry material;

[0087] S3. Preparation of slurry:

[0088] S301. The hydroxypropyl methylcellulose, rubber powder, magnesium fluorosilicate was added to 220kg of water and stirred to prepare a mixed solution;

[0089] S302. The mixture was slowly added to the mixed dry material while stirring at a speed of 35 rpm for 25 minutes to fully mix the materials to form a slurry;

[0090] S4. Pour the slurry into a mold, let it stand at room temperature for 36 hours, and solidify it at a temperature of 28°C; the relative humidity of the molded material is 70%, and it is cured at a temperature of 23°C for 11 days to obtain a thermal insulation, heat insulation, anti-cracking and sound-absorbing material for interior and exterior walls of buildings.

[0091] Comparative Example 2

[0092] The specific preparation method of the thermal insulation, crack-resistant and sound-absorbing material for building interior and exterior walls comprises the following steps:

[0093] S1. Weigh the following materials:

[0094] 100kg white cement, 200kg calcium powder, 35kg asbestos wool, 12kg attapulgite, 25kg hard perlite, 0.5kg hydroxypropyl methylcellulose, 1.3kg rubber powder, 0.5kg magnesium fluorosilicate, 31kg self-ignition fire extinguishing composition;

[0095] The weight ratio of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide in the self-excitation fire extinguishing composition is 1:1:1, and the expanded graphite powder, ammonium polyphosphate and magnesium hydroxide are mixed uniformly by a stirrer to obtain a self-excitation fire extinguishing composition;

[0096] S2. Mixed dry material: white cement, calcium powder, asbestos wool, attapulgite, hard perlite were placed in a dry powder mixer, and the mixer was stirred at a speed of 25 rpm for 18 minutes to obtain a mixed dry material;

[0097] S3. Preparation of slurry:

[0098] S301. The hydroxypropyl methylcellulose, rubber powder, magnesium fluorosilicate was added to 220kg of water and stirred to prepare a mixed solution;

[0099] S302. The mixture was slowly added to the mixed dry material while stirring at a speed of 35 rpm for 25 minutes to fully mix the materials to form a slurry;

[0100] S4. Add the self-exciting fire extinguishing composition composed of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide to the slurry, and stir at a speed of 25 rpm for 13 minutes to uniformly disperse the self-exciting fire extinguishing composition in the slurry.

[0101] S5. Pour the mixed slurry into a mold, let it stand at room temperature for 36 hours, and solidify it at a temperature of 28°C; the relative humidity of the molded material is 70%, and it is cured at a temperature of 23°C for 11 days to obtain a thermal insulation, heat insulation, anti-cracking and sound-absorbing material for interior and exterior walls of buildings.

[0102] Comparative Example 3

[0103] In the comparative example, the only difference from Example 3 is that the self-igniting fire extinguishing composition contains only expanded graphite powder.

[0104] Comparative Example 4

[0105] In the comparative example, the only difference from Example 3 is that the self-igniting fire extinguishing composition contains only ammonium polyphosphate.

[0106] Comparative Example 5

[0107] In the comparative example, the only difference from Example 3 is that the self-igniting fire extinguishing composition contains only magnesium hydroxide.

[0108] In order to verify the preference of the technical solution of the present application, performance tests were carried out on the thermal insulation, crack-resistant and sound-absorbing materials for interior and exterior walls of buildings prepared in Examples 1-5 and Comparative Examples 1-5.

[0109] Referring to GB / T2542-2012 “Test methods for wall bricks”, the compressive strength and bulk density of the fired specimens were tested.

[0110] The apparent porosity is measured in accordance with GB / T3810-2016 “Test methods for ceramic tiles”.

[0111] With reference to GB / T10294-2008 “Determination of Steady-State Thermal Resistance and Related Properties of Insulating Materials - Guarded Hot Plate Method”, the thermal conductivity of the specimen was measured at 25°C using a DRH thermal conductivity meter.

[0112] The thermal insulation, crack-resistant and sound-absorbing materials for building interior and exterior walls prepared in Examples 1-5 and Comparative Examples 1-5 were tested for fire extinguishing performance according to GB15308, and the burned area ratio, burning time and smoke conditions of the thermal insulation, crack-resistant and sound-absorbing materials for building interior and exterior walls were recorded.

[0113]

[0114]

[0115] It can be seen from the above table that the thermal insulation, crack-resistant and sound-absorbing material for interior and exterior walls of buildings prepared by the present invention has excellent comprehensive performance. At the same time, a self-exciting fire extinguishing composition composed of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide mixed in a certain proportion is added to the material. When a fire occurs, the material can play a fire extinguishing role, extinguish the fire in time, improve the fire safety of the building, and greatly protect the property safety.

[0116] Furthermore, expanded graphite powder will expand rapidly when heated to form a heat-insulating and oxygen-isolating carbon layer, which can effectively prevent the spread of fire. By making it account for a relatively high proportion in the fire-extinguishing composition, its characteristics of rapid expansion to form a heat-insulating layer can be fully utilized to provide the primary barrier for fire extinguishing. Ammonium polyphosphate decomposes at high temperature to produce phosphoric acid, and phosphoric acid is further dehydrated to form polymetaphosphoric acid, which can carbonize organic matter to form a non-volatile protective carbon layer to isolate oxygen. Ammonium polyphosphate can enhance the carbonization effect and improve the durability of fire extinguishing in the fire-extinguishing composition. Magnesium hydroxide is decomposed by heat to produce water vapor and magnesium oxide. Water vapor can reduce the flame temperature, and magnesium oxide can form a heat-insulating layer. Magnesium hydroxide can provide water vapor cooling during the fire extinguishing process. At the same time, the heat-insulating layer of magnesium oxide can also play an auxiliary fire extinguishing effect. The specific surface area and pore structure of magnesium oxide make magnesium oxide have a certain adsorption capacity, which has an adsorption effect on the burning gas, plays a role in purifying smoke and improving functionality.

[0117] The expansion characteristics of expanded graphite can further enhance the thermal insulation performance of asbestos wool and improve the fire resistance of the material. The addition of expanded graphite can increase the pore structure of the material, improve the adsorption performance of attapulgite, and enhance the overall thermal insulation effect. Attapulgite has a large specific surface area and pore structure, which can adsorb some gas molecules and tiny particles, and play a role in purifying and adsorbing smoke.

[0118] Ammonium polyphosphate will decompose to produce phosphoric acid, which is further dehydrated to form polymetaphosphoric acid. Polymetaphosphoric acid is a strong dehydrating agent that can carbonize organic matter to form a non-volatile protective carbon layer, isolating oxygen, thereby achieving the purpose of extinguishing fire. In addition, the substances produced by the decomposition of ammonium polyphosphate can react with the components in white cement to improve the gelling properties of white cement and enhance the strength of the material. Hydroxypropyl methylcellulose has water retention properties, and the decomposition products of ammonium polyphosphate can interact with it to improve the fire resistance and water retention properties of the material.

[0119] Ammonium polyphosphate is a highly efficient flame retardant with good thermal stability and chemical stability, which can effectively improve the fire resistance of materials. Magnesium hydroxide decomposes to produce water vapor and magnesium oxide when heated. Water vapor can reduce the flame temperature, and magnesium oxide can form an insulating layer to prevent heat transfer and oxygen from entering, thereby achieving fire extinguishing. Calcium powder has certain adsorption and dispersibility. The decomposition products of magnesium hydroxide can interact with calcium powder to improve the dispersibility and adsorption properties of calcium powder and enhance the fire resistance of materials. Magnesium fluorosilicate can improve the hardness and strength of materials, and the decomposition products of magnesium hydroxide can synergize with it to further improve the strength and fire resistance of materials. In summary, it can be known that the self-excited fire extinguishing composition composed of expanded graphite powder, ammonium polyphosphate, and magnesium hydroxide in the above proportions also improves the hardness, high strength, good flame retardancy, energy saving and environmental protection, sound insulation and thermal insulation of thermal insulation and crack resistance sound absorbing materials for interior and exterior walls of buildings.

[0120] 1. The present invention has the advantages of high strength, good flame retardancy, energy saving and environmental protection, and good sound insulation and heat preservation.

[0121] 2. The present invention utilizes the high melting point and good flame retardancy of asbestos wool and attapulgite to effectively improve the flame retardancy of the thermal insulation material.

[0122] 3. The present invention utilizes the large porosity of hard perlite and the microporous structure. The silicate components contained in the perlite react with the alkali solution to form porous expanded perlite. The porous expanded perlite contains a large number of micropores, which greatly reduces the weight of the thermal insulation material and provides thermal insulation performance. At the same time, the perlite is bonded with asbestos wool and attapulgite to form supporting gaps to enhance the thermal insulation effect of the thermal insulation material.

[0123] 4. The present invention utilizes the fibrous material of asbestos wool and the fibrous crystal structure of attapulgite, which has a certain reinforcing effect on the thermal insulation material, increases the strength and prevents cracking, and its own light weight is added to the material to reduce the material weight.

[0124] 5. The present invention adopts a large amount of calcium powder material, the calcium powder has a large source and is simple to process. It has the characteristics of large expansion, large stacking force and high whiteness. It is used in thermal insulation materials to make the material whiter and have better insulation effect. The coating area is larger under the same quality. It is light in weight and green and natural. It can save 30% of the overall cost and reduce pollution.

[0125] 6. The present invention adds magnesium fluorosilicate to improve the permeability and coagulation force of the thermal insulation material, enhance the wear resistance of the material, and control the coagulation time of the material to increase the construction speed.

[0126] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A thermal insulation, crack-resistant and sound-absorbing material for interior and exterior walls of a building, characterized in that: The invention comprises the following raw materials in parts by weight: 90-110 parts of white cement, 190-210 parts of calcium powder, 30-40 parts of asbestos wool, 10-15 parts of attapulgite, 20-30 parts of hard perlite, 0.1-0.8 parts of hydroxypropyl methylcellulose, 1-1.5 parts of rubber powder, 0.1-0.8 parts of magnesium fluorosilicate, and 22-40 parts of self-excited fire extinguishing composition; The self-exciting fire extinguishing composition comprises expanded graphite powder, ammonium polyphosphate and magnesium hydroxide.

2. The thermal insulation, crack-resistant and sound-absorbing material for interior and exterior walls of a building according to claim 1, characterized in that: The weight ratio of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide in the self-igniting fire extinguishing composition is 3:2:

1.

3. The thermal insulation, crack-resistant and sound-absorbing material for interior and exterior walls of a building according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 95-105 parts of white cement, 195-205 parts of calcium powder, 32-38 parts of asbestos wool, 12-15 parts of attapulgite, 22-28 parts of hard perlite, 0.2-0.7 parts of hydroxypropyl methylcellulose, 1.1-1.4 parts of rubber powder, 0.2-0.7 parts of magnesium fluorosilicate and 25-38 parts of self-excited fire extinguishing composition.

4. The thermal insulation, crack-resistant and sound-absorbing material for building interior and exterior walls according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 100 parts of white cement, 200 parts of calcium powder, 35 parts of asbestos wool, 12 parts of attapulgite, 25 parts of hard perlite, 0.5 parts of hydroxypropyl methylcellulose, 1.3 parts of rubber powder, 0.5 parts of magnesium fluorosilicate and 31 parts of self-excited fire extinguishing composition.

5. The thermal insulation, crack-resistant and sound-absorbing material for building interior and exterior walls according to claim 1, characterized in that: The specific preparation method of the sound absorbing material comprises the following steps: S1. Weigh the following parts by weight to prepare the raw materials: White cement: 90-110 parts, calcium powder: 190-210 parts, asbestos wool: 30-40 parts, attapulgite: 10-15 parts, hard perlite: 20-30 parts, hydroxypropyl methylcellulose: 0.1-0.8 parts, rubber powder: 1-1.5 parts, magnesium fluorosilicate: 0.1-0.8 parts, self-excited fire extinguishing composition: 22-40 parts; The weight ratio of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide in the self-excitation fire extinguishing composition is 3:2:1; the expanded graphite powder, ammonium polyphosphate and magnesium hydroxide are mixed evenly by a stirrer to obtain a self-excitation fire extinguishing composition; S2. Mixed dry material: white cement, calcium powder, asbestos wool, attapulgite, and hard perlite are placed in a dry powder mixer to obtain a mixed dry material; S3. Preparation of slurry: S301. The hydroxypropyl methylcellulose, rubber powder, magnesium fluorosilicate are added to 120-320 parts by weight of water and stirred to prepare a mixed solution; S302. The mixture is slowly added to the mixed dry material while stirring at a speed of 30-40 rpm for 20-30 minutes to fully mix the materials to form a slurry; S4. The self-excited fire extinguishing composition composed of expanded graphite powder, ammonium polyphosphate and magnesium hydroxide is added to the slurry and stirred at a speed of 20-30 rpm for 10-15 minutes to uniformly disperse the self-excited fire extinguishing composition in the slurry; S5. Pour the mixed slurry into a mold and let it stand at room temperature for 24-48 hours to solidify it into shape; the molded material is cured at a temperature of 20-25°C for 7-14 days to obtain a thermal insulation, heat insulation, crack resistance and sound absorption material for interior and exterior walls of a building.

6. The thermal insulation, crack-resistant and sound-absorbing material for interior and exterior walls of a building according to claim 5, characterized in that: In S2, the mixer stirs and mixes at a speed of 20-30 rpm for 15-20 minutes.

7. The thermal insulation, crack-resistant and sound-absorbing material for building interior and exterior walls according to claim 5, characterized in that: In the step S5, the curing temperature is 25-30°C.

8. The thermal insulation, crack-resistant and sound-absorbing material for interior and exterior walls of a building according to claim 5, characterized in that: In S5, the relative humidity of the formed material is 60%-80%.

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