阅读说明：本技术 一种耐热防水阻燃无机质复合保温板 (Heat-resistant, waterproof and flame-retardant inorganic composite insulation board ) 是由 艾明生 于 2019-11-27 设计创作，主要内容包括：本发明公开了一种耐热防水阻燃无机质复合保温板,该清洗液由下列原料制成：铁尾矿65~82份、草木灰50~63份、硼酸铝5~10份、硫酸钡5~10份、硅溶胶12.5~15份、鸡蛋清5~15份、N,N’-亚甲基双丙烯酰胺0.5~5份、食用碱0.5~3份、水4~13份、羧甲基纤维素钠0.1~0.5份、硅溶胶12~16份。按设计配方称量各物质,经球磨、过筛、复配,制成配合料；将配合料压制成块状坯体,经烧结、冷却,制得耐热防水阻燃无机质复合保温板,可用作具有隔热、保温、隔音、防火功能的建筑、装饰材料。(The invention discloses a heat-resistant, waterproof and flame-retardant inorganic composite heat-insulation board which is prepared from 65 ~ parts of iron tailings, 50 ~ parts of plant ash, 5 ~ 010 parts of aluminum borate, 5 ~ parts of barium sulfate, 12.5 ~ parts of silica sol, 5 ~ parts of egg white, 0.5 ~ parts of N, N' -methylene bisacrylamide, 0.5 ~ parts of edible alkali, 4 ~ parts of water, 0.1 ~.5 parts of sodium carboxymethyl cellulose and 12 ~ parts of silica sol by weight according to a designed formula, and is prepared into a batch by ball milling, sieving and compounding, the batch is pressed into a block-shaped blank body, and the blank body is sintered and cooled to prepare the heat-resistant, waterproof and flame-retardant inorganic composite heat-insulation board which can be used as a building and decoration material with heat insulation, heat preservation, sound insulation and fire prevention functions.)

1. The heat-resistant waterproof flame-retardant inorganic composite insulation board is characterized by being prepared from the following raw materials, by weight, 65 ~ 82 parts of iron tailings, 50 ~ 63 parts of plant ash, 5 ~ 10 parts of aluminum borate, 5 ~ 10 parts of barium sulfate, 12.5 ~ 15 parts of silica sol, 5 ~ 15 parts of egg white, 0.5 ~ 5 parts of N, N' -methylene bisacrylamide, 0.5 ~ 3 parts of dietary alkali, 4 ~ 13 parts of water and 0.1 ~ 0.5.5 parts of sodium carboxymethylcellulose.

2. The heat-resistant waterproof flame-retardant inorganic composite insulation board according to claim 1 is characterized by comprising the following steps of (1) accurately weighing iron tailings, plant ash, aluminum borate, barium sulfate, egg white, N' -methylene bisacrylamide, water and sodium carboxymethyl cellulose, ball-milling in a ball mill, passing a mixed ball grinding material through a 200 ~ -mesh sieve for later use, (2) adding edible alkali into silica sol, uniformly stirring, adding 2 ~ atmospheric pressure, standing to gelatinize the silica sol, stopping reaction until the pH of the silica sol is 6.5 ~ to obtain silica gel, (3) adding silica gel into the sieved powder, uniformly mixing to obtain a batch, placing the prepared batch into a stainless steel die, pressing to obtain a block blank, wherein the forming pressure is 6 ~ MPa, placing the pressed blank into air, naturally drying for 1 hour or placing into a drying box at constant temperature of 100 ℃ for 0.5 4831 hour, conveying the water in the blank, conveying the blank to a flame-retardant inorganic composite insulation board, heating from room temperature to room temperature, sintering at a temperature of 1100 ℃, and sintering at a temperature of ~ ℃ and a temperature of the inorganic composite insulation board after sintering, wherein the temperature is increased to reach 673 ℃ and the temperature of the inorganic composite insulation board is increased to reach ~ and sintered.

3. The heat-resistant waterproof flame-retardant inorganic composite insulation board according to claim 1, wherein the silica sol is prepared by heating a silica sol solution to 140 ~ 160 ℃, pressurizing to 2 ~ 5 atmospheric pressure, wherein the diameter of sol particles in the silica sol is 40 ~ 70mm, the proportion of silica is 26 ~ 30%, adding the silica sol into a slurry dipping machine, starting the slurry dipping machine, slowly rotating, adding fatty alcohol polyoxyethylene ether according to the proportion of 0.1-0.3% of the weight of the added silica sol, after 3 ~ 4 hours, adding n-octyl alcohol serving as an antifoaming agent according to the proportion of 0.03-0.08% of the weight of the silica sol, adjusting the pH value of the mixed solution to 5.5 ~ 6, maintaining the reaction until the diameters of the sol particles grow to 35 ~ 100nm, and obtaining the silica sol after the reaction.

4. The heat-resistant waterproof flame-retardant inorganic composite insulation board according to claim 1, wherein the plant ash is corn stalk ash, tea branch ash, sorghum stalk ash or wheat straw ash, and contains K₂O6~38wt％，P₂O₅1.1~4.5wt％，CaO0.5~18wt％。

5. The heat-resistant waterproof flame-retardant inorganic composite insulation board according to claim 1, wherein the iron tailings are SiO in iron tailings₂27.0 ~ 33.8.8 wt%, 16.0 ~ 18.0.0 wt% of ferric oxide, and Al₂O₃3.5 ~ 6.7.7 wt%, CaO 2.1 ~ 4.0.0 wt%, and MgO 0.6 ~ 1.3.3 wt%.

Technical Field

The invention belongs to the technical field of heat-insulating materials, and particularly relates to a heat-resistant, waterproof and flame-retardant inorganic composite heat-insulating board.

Background

The iron tailings are natural composite mineral raw material resources which are processed into fine particles, and the physical and chemical components of the iron tailings are very close to those of common river sand. The main chemical component of the iron tailings is silicon dioxide, and the iron trioxide is used as the secondary chemical component. The content of the silicon dioxide in the tailings is high, the tailings are acidic, the loss on ignition is low, and particularly, the content of the harmful component, namely the sulfuric anhydride, is lower than the minimum limit value of national building sand. Through theoretical thermodynamic calculation, alkali aggregate reaction experiment tests and microscopic analysis, the iron tailings have low potential alkali aggregate reaction possibility, few active substances of the iron tailings are distributed uniformly, and river sand may be mixed with active ingredients such as chalcedony, opal and the like, so that the river sand is not distributed uniformly in concrete, and stress damage is easily generated when the alkali aggregate reaction occurs. The iron tailings in the concrete aggregate are mainly used for replacing part of fine aggregate sand, and the silicon dioxide and ferric oxide in the chemical components mainly exist in an inactive form, so that the iron tailings do not participate in hydration reaction. An inorganic fireproof heat-insulating board is a novel wall heat-insulating material, and the main raw materials of the inorganic fireproof heat-insulating board are expanded perlite and specially-made slurry. The product is prepared by an advanced production process, scientific proportioning, one-step compression molding through a production line, steam curing and natural curing, and belongs to a novel inorganic green building material product.

Disclosure of Invention

The invention aims to solve the existing problems and provides a heat-resistant, waterproof and flame-retardant inorganic composite insulation board.

The invention is realized by the following technical scheme:

the heat-resistant waterproof flame-retardant inorganic composite insulation board is characterized by being prepared from the following raw materials, by weight, 65 ~ 82 parts of iron tailings, 50 ~ 63 parts of plant ash, 5 ~ 10 parts of aluminum borate, 5 ~ 10 parts of barium sulfate, 12.5 ~ 15 parts of silica sol, 5 ~ 15 parts of egg white, 0.5 ~ 5 parts of N, N' -methylene bisacrylamide, 0.5 ~ 3 parts of dietary alkali, 4 ~ 13 parts of water and 0.1 ~ 0.5.5 parts of sodium carboxymethylcellulose.

A heat-resistant, waterproof and flame-retardant inorganic composite heat-insulation board is prepared through accurately weighing iron tailings, plant ash, aluminium borate, barium sulfate, egg white, N' -methylene bisacrylamide, water and sodium carboxymethyl cellulose, ball-milling in a ball mill, passing the mixture through 200- ~ -mesh sieve, adding edible alkali to silica sol, stirring, adding 2 ~ atm, standing to gelatinize the silica sol until the pH value of the silica sol is 4, stopping reaction to obtain silica gel, adding silica sol to the sieved powder, mixing, loading the mixture into stainless steel mould, pressing to obtain block blank, shaping under 6 ~ MPa, drying in air for 1 ~ hr or in 100 deg.C drying box for 0.5 ~ hr, evaporating water in the blank, delivering the blank to the required strength of sintering furnace, sintering at 3878 deg.C, heating at 3 deg.C/3 deg.C to 1100 deg.C, sintering at 3878 deg.C, heating at 3878 deg.C to obtain heat-resistant inorganic composite heat-insulation board, and sintering at room temperature of ~ deg.C.

Heating a silica sol solution to 140 ~ 160 ℃, pressurizing to 2 ~ 5 atmospheric pressures, wherein the diameter of sol particles in the silica sol is 40 ~ 70mm, the proportion of silicon dioxide is 26 ~ 30%, adding the silica sol into a slurry dipping machine, starting the slurry dipping machine, slowly rotating, adding fatty alcohol-polyoxyethylene ether according to the proportion of 0.1-0.3% of the weight fraction of the added silica sol, after 3 ~ 4 hours, adding n-octyl alcohol serving as a defoaming agent according to the proportion of 0.03-0.08% of the weight fraction of the silica sol, adjusting the pH value of the mixed solution to 5.5 ~ 6, maintaining the reaction until the diameters of the sol particles grow to 35 ~ 100nm, and obtaining the silica sol after the reaction.

Further, the plant ash is corn stalk ash, tea branch ash, sorghum stalk ash or wheat straw ash containing K₂O6~38wt％，P₂O₅1.1~4.5wt％，CaO0.5~18wt％。

Further, the iron tailings are SiO in the iron tailings₂27.0 ~ 33.8.8 wt%, 16.0 ~ 18.0.0 wt% of ferric oxide, and Al₂O₃3.5 ~ 6.7.7 wt%, CaO 2.1 ~ 4.0.0 wt%, and MgO 0.6 ~ 1.3.3 wt%.

The invention has the beneficial effects that:

the inorganic composite board is made up by using silica sol to surround the film with toughness, plant ash and barium sulfate iron ore tail, and has an aggregate with good heat-insulating and closed space, and is an inorganic foamed material, and can not be burnt and melted under the flame. The carbonized fire-proof material is a class A fire-proof material which forms carbonization at a small part under long-time flame and keeps the original shape. The material has excellent heat insulating performance, fireproof performance and low water absorption, and has no price advantage in the field of heat insulating materials due to high cost. The thermal insulation material has poor dimensional stability, and can cause cracking and water seepage of a facing when being used in external thermal insulation engineering. The silica sol has high stability and good high-temperature strength.

The iron ore tailings, the plant ash, the aluminum borate, the barium sulfate and the like are mixed, the advantages and the disadvantages of various materials are complemented and considered, the quality is stable and reliable, the product is non-combustible, the effects of fire insulation and heat insulation and fire prevention can be achieved, and the integrity is kept at a high temperature. The heat-insulating material is composed of various inorganic materials, has good compatibility with wall materials, and can ensure that the heat-insulating system does not crack, hollowly and drop off. The heat-insulating board has the advantages of stable quality, good strength, no slag falling, no dust, no toxic substance, convenient cutting, flexible construction, reduction of construction difficulty, improvement of labor efficiency, and breakthrough of the technical defects of easy water seepage, cracking, hollowing and aging of the heat-insulating board. The heat conduction coefficient is stable and can not change along with time; the fireproof performance is stable, and the product is not added with a flame retardant and has no timeliness; the product can be cut, the heat-insulating and fireproof properties of the product cannot be changed even if the product is artificially damaged, the heat conductivity coefficient is low, and the fireproof performance is good.

Compared with the prior art, the invention has the following advantages:

the selected tailing waste residue is subjected to technical treatment, so that the specific surface area of the tailing waste residue is increased, the roughness of lattice defects is improved, and the self-healing performance is enhanced, so that a raw material product prepared by material activity is further excited, the cost is low, the waste tailings are recycled, the material is clean and environment-friendly, and the material has excellent heat insulation performance, fireproof performance and lower water absorption, but has obvious price advantage in the field of heat insulation materials due to low cost.

Detailed Description

The invention is illustrated by the following specific examples, which are not intended to be limiting.