CN110790583A - High-strength ultra-light fireproof green heat insulation board, preparation method thereof and wall system - Google Patents

Abstract

The present application discloses a high-strength and light-weight fireproof green thermal insulation board prepared from water and other raw materials, wherein based on the weight of the raw materials other than water, the raw materials contain 0.1 -10 wt% palm fibers, and wherein the palm fibers have a fiber length ranging from 2mm to 15mm. The present application also discloses a wall body system using the fireproof green thermal insulation board of the present application. The present application also discloses an environment-friendly preparation method of the high-strength ultra-light fireproof green thermal insulation board. The fireproof green thermal insulation board of the present invention can take into account various excellent properties: density≤180kg/m ³ , thermal conductivity≤0.055W/mK, compressive strength≥0.3MPa, combustion performance conforming to A1 standard, and water absorption rate≤10%. The wall system of the present application has good sound insulation and fire performance. And the production method has low cost, energy saving and environmental protection.

Description

High-strength ultra-light fireproof green thermal insulation board and its preparation method, wall system

technical field

The present invention relates to a fireproof thermal insulation board, a preparation method thereof, and a wall body system including the same. More specifically, the present invention relates to a high-strength, ultra-lightweight, fire-proof green thermal insulation board, an environmental protection preparation method thereof, and a wall system including the same.

Background technique

Insulation materials installed on buildings in the past are generally made of lightweight and low-cost organic materials, such as expanded polystyrene (EPS), extruded polystyrene foam (XPS), polyurethane ( polyurethane, PU) and so on. This type of material is popular because it is readily available and cost-competitive. However, the use of such materials has devastating consequences. Since they are very resistant to fire and heat, when ignited, they burn down extremely quickly, releasing toxic gases. In fact, the use of such materials is the cause of major fire accidents in major Chinese cities and around the world, resulting in serious loss of life.

In view of this, the Chinese government and international regulatory authorities including the United Arab Emirates (Dubai), Saudi Arabia, Australia and other countries have implemented strict regulations on the thermal insulation materials used in buildings, which must be carried out according to the local building regulations of different countries or regions. Flammability test. Taking China as an example, the relevant Chinese authorities stipulate that the combustion performance of building insulation materials must reach the A-level level stipulated in GB 8624-2012. According to the Chinese national standard "Classification of Combustion Performance of Building Materials and Products" (GB8624-2012), the combustion performance of building materials is divided into: Class A - non-combustible materials (products); Class B1 - flame retardant materials (products); Class B2 - flammable Materials (Articles); and Class B3 - Flammable Materials (Articles). And the class A of the combustion performance of flat building materials and products is further divided into class A1 and class A2.

At present, the thermal insulation materials that can meet the A-level standards are generally inorganic materials. The price of good quality and higher performance inorganic insulation materials is very high, which explains why they are not as popular.

However, in terms of physical properties, inorganic thermal insulation materials have common problems of low strength, brittle texture, high water absorption and high density. The use of such materials is often inconvenient because they need to be mixed or filled at the construction site, creating debris on site and thus creating a landfill burden.

Inorganic materials such as cement, ceramics, foam glass and perlite are not environmentally friendly in their own production processes, and are energy-intensive, which is a major source of carbon emissions. For example, cement needs to be calcined, perlite needs to be fired, ceramics need to be fired, and foam glass needs to be produced with high energy consumption.

To sum up, the fireproof thermal insulation board made of the thermal insulation material that meets the A-level standard in the prior art has the disadvantages of high energy consumption, high pollution, high cost, low strength, brittle texture, high water absorption rate, and high density, which is inconvenient for construction. , there is an urgent need for a variety of fire-proof thermal insulation boards with low production cost, high strength, ultra-light and environmental protection.

SUMMARY OF THE INVENTION

One object of the present invention is to overcome the shortcomings of the existing fire-proof, heat-insulating and thermal-insulation boards that cannot achieve high strength, low density, environmental protection in the production process, environmental protection of raw materials, good sound insulation effect, and at the same time meet the combustion performance A1 standard, and provide a high-strength, lightweight Ultralight fireproof green thermal insulation board.

The second object of the present invention is to provide a preparation method of the high-strength ultra-light fireproof green thermal insulation board.

The third object of the present invention is to provide a wall system including the high-strength, ultra-light, environmental-friendly, fire-proof, green thermal insulation board and having good sound insulation performance.

The present invention provides a high-strength and light-weight fireproof green thermal insulation board, which is prepared from water and other raw materials, wherein based on the weight of the raw materials other than water, the raw materials contain 0.1 - 10 wt% palm fibers, and wherein the palm fibers have a fiber length ranging from 2 mm to 15 mm.

The present invention also provides a wall body system, the wall body system includes the fireproof green thermal insulation board of the present invention.

The present invention also provides an environment-friendly preparation method of the high-strength, ultra-light, fire-proof green thermal insulation board, the method comprising the step of mixing palm fiber with other raw materials; wherein based on the weight of the raw materials other than water, the raw materials contain 0.1-10% by weight of palm fibers, and wherein the palm fibers have a fiber length ranging from 2 mm to 15 mm.

Compared with the fire-proof, heat-insulation and heat-insulation board made of the heat-insulating material meeting the A-level standard in the prior art, the fire-proof heat-insulation and heat-insulation board of the present invention not only has high strength, low density, environmental protection in the production process, and environmental protection of the raw materials, but also satisfies the combustion performance A1 at the same time. standard. The present invention utilizes wastes from agricultural and industrial production in an environmentally friendly and environmentally friendly way. It provides environmentally friendly (green) materials by consuming industrial waste by-products, while providing ultra-light (equal to or less than 180kg/m ³ ), non-combustible (A1 class), good sound and thermal insulation. Specifically, the fireproof, heat-insulation and environmental protection board of the present invention can take into account various excellent properties: density≤180kg/m ³ , thermal conductivity≤0.055W/mK, compressive strength≥0.3MPa,

The combustion performance meets the A1 standard, and the water absorption rate is less than or equal to 10%. And the wall system including the fireproof green thermal insulation board of the present invention also has the above advantages and also has an excellent sound insulation index ≥ 35dB. In addition, the preparation method of the high-strength, ultra-light and environment-friendly fire-proof heat-insulation-insulation board of the present invention has low cost, low energy consumption and little pollution to the environment.

Furthermore, the method of the present invention uses a very high percentage of recycled materials, and its manufacturing process consumes very low energy levels and does not pollute rivers or streams. The product of the present invention is ultra-light and not brittle, so that it is easier for construction workers to construct on the construction site. The present invention is non-flammable and tested to the non-toxic category of European standards. In addition to the combined advantages of organic (low thermal conductivity and water absorption) and inorganic (refractory) materials, it also has good cost efficiency.

In addition, the environmental protection concept of the present invention has enormous social benefits to both human beings and the earth. Table 1 below provides a competitive analysis of the green building of the present invention compared to common building materials.

Table 1

Detailed ways

The high-strength and light-weight fireproof green thermal insulation board provided by the present invention is prepared from water and other raw materials, wherein based on the weight of the raw materials other than water, the raw materials contain 0.1-10 % by weight palm fibers, and wherein the palm fibers have a fiber length ranging from 2 mm to 15 mm.

Preferably, the raw materials other than water include active powder, hardener, foaming agent, foam stabilizer and optional functional admixtures; and wherein the active powder is selected from slag, coal ash, silica fume and partial Three or more kinds of kaolin; the hardening agent is selected from two or more kinds of sodium silicate, potassium silicate, potassium hydroxide and sodium hydroxide; the foaming agent is selected from hydrogen peroxide and one or more of aluminum powder; the foam stabilizer is selected from one or more of calcium stearate and silicone amide; and the optional functional admixture is selected from water reducer, One or more of retarders and pigments.

More preferably, the active powder is selected from three or more of 0.6-29.4 wt% slag, 1.8-51.7 wt% coal ash, 0.6-5.9 wt% silica fume and 0.6-11.8 wt% metakaolin A variety of; the hardener is selected from 17.6-35.3% by weight of sodium silicate, 17.6-35.3% by weight of potassium silicate, 0.6-8.8% by weight of potassium hydroxide and 0.6-8.8% by weight of sodium hydroxide two or more; the foaming agent is selected from one or more of 1.8-5.9% by weight of hydrogen peroxide and 1.8-5.9% by weight of aluminum powder; the foam stabilizer is selected from 0.1-5.9 One or more of calcium stearate in wt % and silicone amide in 0.1-5.9 wt %; and the optional functional admixture is selected from 0-10 wt % water reducer, 0-10 One or more of wt % retarder and 0-10 wt % pigment; all percentages above are based on the weight of the raw materials excluding water.

Further preferably, the active powder is selected from three or more of 5-20% by weight of slag, 5-40% by weight of coal ash, 1-4% by weight of silica fume and 5-11% by weight of metakaolin. Various; the hardener is selected from 20-30% by weight of sodium silicate, 20-30% by weight of potassium silicate, 1-6% by weight of potassium hydroxide and 1-6% by weight of sodium hydroxide two or more; the foaming agent is selected from one or more of 2-5 wt% hydrogen peroxide and 2-5 wt% aluminum powder; the foam stabilizer is selected from 0.1-4 One or more of calcium stearate in wt % and silicone amide in 0.1-4 wt %; the optional functional admixture is selected from 0-6 wt % water reducing agent, 0-6 wt % % retarder and 0-6 wt % of one or more of pigments; and 2-6 wt % palm fiber; all percentages above are based on the weight of the raw materials excluding water.

Most preferably, the active powder is selected from three or more of 9-20% by weight of slag, 10-40% by weight of coal ash, 2-4% by weight of silica fume and 5-10% by weight of metakaolin. Multiple; the hardener is selected from two of 20-28% by weight of sodium silicate, 20-28% by weight of potassium silicate, 1-5% by weight of potassium hydroxide and 1-5% by weight of sodium hydroxide or more; the foaming agent is selected from one or more of 2-4.5% by weight of hydrogen peroxide and 2-4.5% by weight of aluminum powder; the foam stabilizer is selected from 0.1-3.5% by weight One or more of calcium stearate and 0.1-3.5% by weight of silicone amide; the optional functional admixture is selected from 0-5% by weight of water reducing agent, 0-5% by weight of One or more of a retarder and 0-5 wt% pigment; and 2-5 wt% palm fiber; all percentages above are based on the weight of the raw materials excluding water.

The palm fibers of the present invention are obtained from plants of the palm family, preferably from the palm genus of the palm family. Preferably, the palm fiber may be a material consisting mainly of fibrous matter resulting from the extrusion of oil from palm fruit, and the palm fiber has a water content of less than 20% and an oil content of less than 15%. Preferably the palm fibers have a water content of less than 15% and an oil content of less than 8%. It is further preferred that the palm fibers have a water content of less than 10% and an oil content of less than 5%. Due to the residual oil, there is no need to add additional surfactants when preparing the high-strength, ultra-light, environment-friendly fire-proof thermal insulation board of the present invention. The palm fibers may also be sheath fibers or coir fibers of the palm family, the genus Palm.

Preferably, the raw material contains 2-6 wt% palm fibers based on the weight of the raw material excluding water, and wherein the palm fibers have a fiber length ranging from 3 mm to 9 mm. More preferably, the raw material contains 3-6 wt% palm fibers based on the weight of the raw material excluding water, and wherein the palm fibers have a fiber length ranging from 7 mm to 9 mm. The palm fiber may have a fiber length of 7.0, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, 8.0, 8.1, 8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 8.8, 8.9, or 9mm. Preferably, the palm fibers have a fiber length in the range of 7.5-8.5 mm. Palm fibers of a specific length can be processed by shearing equipment (eg blended fiber shears, etc.). Length deviation of palm fibers of 0.5-1 mm is acceptable. In addition, the palm fibers described in the present invention can also be a mixture of palm fibers with different lengths. For example, 30-70% of the palm fiber blend has a fiber length of 2-6 mm, 5-40% has a fiber length of 7-9 mm, and 3-30% has a fiber length of 10-15 mm. Preferably, 40-60% of the palm fiber mixture has a fiber length of 2-6 mm, 15-35% has a fiber length of 7-9 mm, and 5-25% has a fiber length of 10-15 mm. Preferably, the palm fiber of the present application is a mixture of palm fibers of different lengths, and the mixture can further improve the strength and toughness of the finally obtained fireproof green thermal insulation board.

In addition, the inventors of the present invention found that the content of palm fiber in the raw materials of the fireproof green thermal insulation board other than water can be adjusted according to different climates of the application site to obtain better performance. For example, when the final panel is installed in an area with a Mediterranean climate, the raw material contains 4-10% by weight of palm fibers, based on the weight of the raw material excluding water. When the final panel is installed in a subtropical monsoon climate zone, the raw material contains 0.5-5 wt% palm fiber based on the weight of the raw material excluding water. When the final panel is installed in an area with a temperate monsoon climate, the raw material contains 3-7% by weight of palm fibers, based on the weight of the raw material excluding water. When the final panel is installed in a subtropical climate zone, the raw material includes 0.7-6 wt% palm fiber based on the weight of the raw material excluding water. When the final panel is installed in an area with a humid continental climate, the raw material includes 4-9% by weight of palm fibers, based on the weight of the raw material excluding water.

The coal ash of the present invention, namely a kind of fine ash, belongs to a common solid waste in industrial pollutants. This is by-product waste produced by industry or power stations using coal as a heat generator. It is mainly produced by coal combustion, and its main components are metal oxides FeO, Fe ₂ O ₃ , CaO, MgO, Na ₂ O, TiO ₂ , etc. and non-metal oxides SiO ₂ . For example, the powder collected in the flue gas of pulverized coal furnaces in power plants is called fly ash. Preferably, the coal ash contains SiO ₂ , Al ₂ O ₃ , Fe ₂ O ₃ and CaO, and wherein the content of the CaO does not exceed 10 wt %. More preferably, the coal ash is Class F fly ash specified in the Chinese National Standard GB/T1596-2005.

The slag described in the present invention is a by-product in the blast furnace ironmaking process. It contains SiO ₂ , Al ₂ O ₃ , MgO and CaO. Preferably, the slag is ground granulated blast furnace slag based on standard GB/T18046-2008. Preferably, the particle size of the slag is in the range of 5-40mm, preferably 5-20mm, most preferably 5-10mm. More preferably, the slag is preferably a blast furnace slag of grade S95 specified in the Chinese national standard GB/T18046-2008.

Silica Fume, also known as microsilica (CAS No. 69012-64-2, EINECS No. 273-761-1), is an amorphous (non-crystalline) polymorph of silicon dioxide. It is an ultrafine powder collected as a by-product of the production of silicon and ferrosilicon alloys and consists of spherical particles with an average particle size of around 150nm.

The metakaolin of the present invention is produced by dehydration of kaolin. It restructures the kaolin into metakaolin by providing the kaolin with heating in excess of 700°C. After dehydration, it contains high percentages of SiO ₂ and Al ₂ O ₃ , which are used to create geopolymer structures. The particle size range of metakaolin is 5-40mm, preferably 5-20mm, most preferably 5-10mm.

The blowing agent used in the present invention does not release any harmful gas during foaming. The foaming agent of the present invention is selected from one or more of 1.8-5.9% by weight of hydrogen peroxide and 1.8-5.9% by weight of aluminum powder. Preferably, the blowing agent is a 25-60 wt% aqueous hydrogen peroxide solution. More preferably, the hydrogen peroxide is a 25-40 wt% aqueous hydrogen peroxide solution.

The hardener used in this application, including water glass, is an aqueous dispersion of sodium silicate or potassium silicate with a solids content of 10-40% by weight. Preferably, the hardener is a mixture of sodium silicate and sodium hydroxide or a mixture of potassium silicate and potassium hydroxide. Preferably, it is required to be sodium silicate with sodium hydroxide. By providing sodium hydroxide, the modulus ratio of sodium silicate can be changed. However, the main purpose of adding sodium hydroxide is to increase the strength and dissolve more Si ⁴⁺ and Al ³⁺ ions from the active powder. Preferably, the modulus ratio of the water glass is 3.1 to 3.4 modulus. Preferably, the aqueous sodium silicate dispersion is liquid sodium silicate of the "Liquid-2" type specified in the Chinese national standard GB/T4209-2008. The sodium silicate requires 99% wt sodium and the modulus ratio of water glass becomes 1.2-1.6 modulus. The solid content of the water glass of the present invention is less than or equal to 40%, more preferably 20-40% by weight, most preferably 30-40% by weight.

Foam stabilizers used in this application include calcium stearate or calcium stearate. Preferably, technical grade calcium stearate is required.

The water-reducing agent can be a water-reducing agent commonly used in the art, such as lignosulfonate, naphthalenesulfonate formaldehyde polymer, and the like.

The retarder may be a retarder commonly used in the art, such as calcium sugar, gluconate, citric acid, tartaric acid and its salts, zinc salts, phosphates and the like.

The pigment can be a pigment commonly used in the art, such as iron oxide, manganese dioxide, chromium oxide, cobalt blue, carbon black, and the like.

Most preferably, the coal ash is coal ash produced from coal-fired power plants, the slag is slag produced by a steel mill, and the palm fiber is derived from oil palm fruit residue obtained after palm oil extraction. In this way, these solid wastes can be effectively utilized and turned waste into treasure. It has the advantages of low energy consumption production and no waste discharge.

The present invention also provides a wall body system comprising the fireproof green thermal insulation board of the present invention. The fireproof green thermal insulation board can be installed in the center of the wall system or on one or both sides of its main body. The wall body system not only meets the requirements of fire and heat insulation, but also has excellent sound insulation performance.

The present invention also provides an environment-friendly preparation method of the high-strength, ultra-light, fire-proof green thermal insulation board, the method comprising the step of mixing palm fiber with other raw materials; wherein, based on the weight of the raw materials other than water, the raw materials contain 0.1-10% by weight of palm fibers, and wherein the palm fibers have a fiber length ranging from 2 mm to 15 mm.

Preferably, the environmental protection preparation method of the high-strength ultra-light fireproof green thermal insulation board comprises the following steps:

a) Mix water, active powder, hardener, foam stabilizer, palm fiber and optional functional admixtures to homogeneity at a rotational speed of 400-800 rpm, wherein the volume ratio of water to raw materials other than water is 1 : 50 to 1:2;

b) adding a blowing agent to the mixture of a) at 700-1000 rpm for 3-15 seconds to create a cell structure;

c) pour the mixture of b) into a container mould and cure for 1-12 hours;

d) demoulding and cutting the cured panel of c) to the desired size, and

e) continue to cure the cut board of d) for 1-30 days; the raw materials other than water include active powder, hardener, foaming agent, foam stabilizer and optional functional admixtures; and wherein

The active powder is selected from three or more of slag, coal ash, silica fume and metakaolin;

The hardener is selected from two or more of sodium silicate, potassium silicate, potassium hydroxide and sodium hydroxide;

The foaming agent is selected from one or more of hydrogen peroxide and aluminum powder;

The foam stabilizer is selected from one or more of calcium stearate and silicone amide; and

The optional functional admixture is selected from one or more of water reducers, retarders and pigments.

Further preferably, the environmental protection preparation method of the high-strength ultra-light fireproof green thermal insulation board comprises the following steps: a) mixing water, active powder, hardener, foam stabilizer, palm fiber and any Selected functional admixtures to homogeneity, wherein the volume ratio of water to raw materials other than water is 1:30 to 1:4; b) Add a blowing agent to the mixture of a) at a rotational speed of 860-960 rpm hold for 5-15 seconds to create the pore structure; c) pour the mixture of b) into a container mold and cure for 8-12 hours; d) demould and cut the cured plate of c) to the desired size, and e ) Continue to cure the cut panels of d) for 7-28 days.

More preferably, wherein said step b) is carried out in a temperature range of 15-35°C; step c) is carried out in a temperature range of ≤100°C; and step c) is cured at ≥50% humidity; when sampling step c ) to within the density range of 190-270 kg/m ³ , proceed to step d).

The performance of the fireproof green thermal insulation board/wall system of the present invention is tested according to the following standards:

1. Density measurement is based on JC/T 2200-2013;

2. The compressive strength test method is based on JC/T2200-2013;

3. The combustion performance method is based on BS EN 13501-1:2007+A1:2009 or GB8624-2012;

4. Water absorption is based on JC/T2200-2013; and

5. Sound insulation performance based on BS EN ISO 140-3:1995.

The present invention will be further described below in conjunction with the embodiments.

Example 1

The present embodiment illustrates the fireproof green thermal insulation board of the present invention and its preparation method, and the ratio of raw materials is shown in Table 2 below:

Table 2

1. Pretreatment of palm fiber

The palm fiber is derived from the oil palm residue obtained after the palm oil extraction of Henghua Resources Group. The palm fiber has a water content of 20% and an oil content of 8%. Shearing equipment is used to produce palm fibers having the above-defined lengths.

2. Plate Preparation

a) Mix water, active powder, hardener, foam stabilizer, palm fiber and pigment to homogeneity at 600 rpm;

b) adding a blowing agent to the mixture of a) at 29°C for 6 seconds at 900 rpm to generate a cell structure;

c) Pour the mixture of b) into a container mould and cure at 30°C and 70% humidity for 12 hours;

d) sampling the mixture of step c) to a density of 200 kg/m ³ , demoulding and cutting the cured plate of c) to a test size of 15 cm×15 cm, and

e) Continue to cure the cut panels of d) for 28 days.

3. Board performance test results

The test results shown in Table 3 are from at least 20 samples. And the air sound insulation effect is obtained through the wall system with panels installed on both sides.

table 3

Density (kg/m³) ≤180(JC/T-2200) Fire-proof level Class A1 (GB8624-2012) Compressive strength (MPa) ＞0.30(JC/T-2200) Thermal conductivity 0.055w/m.k(JC/T-2200) water absorption <10% (JC/T-2200) asbestos fiber Not detected (EPA-600) Hazardous substance content Standard (GL-008-009) Airborne sound insulation performance of wall systems ＞35dB(BS EN ISO 140-3) Fire performance of wall system >2-Hr (BS EN 1364-1)

other embodiments

The inventor also selected a combination within the numerical range of the "specific embodiment" of the present invention, and prepared and tested the fireproof green thermal insulation board according to the method of Example 1. Results The fireproof green thermal insulation boards of all the examples can achieve a variety of excellent properties: density≤180kg/m ³ , thermal conductivity≤0.055W/mK, compressive strength≥0.3MPa, combustion performance conforming to A1 standard, and water absorption rate ≤10%. In addition, the wall body system equipped with the above fireproof green thermal insulation board of the present application also has good sound insulation performance.

All publications and patent applications mentioned in this specification are indicative of the level of those skilled in the art to which this invention pertains. All publications and patent applications are incorporated herein by reference to the same extent as if each individual publication or patent application was specifically and individually indicated to be incorporated by reference.

While certain embodiments have been described, they have been shown by way of example only, and are not intended to limit the scope of the inventions. The appended claims and their equivalents in this specification are considered to cover such forms or modifications as are within the scope and spirit of the inventions.

Claims (17)

1. A high-strength, weight, and ultra-light fireproof green thermal insulation board prepared from water and other raw materials, wherein based on the weight of the raw materials other than water, the raw materials contain 0.1-10 % by weight palm fibers, and wherein the palm fibers have a fiber length ranging from 2 mm to 15 mm. 2. The fireproof green thermal insulation board according to claim 1, wherein the raw materials other than water include active powder, hardener, foaming agent, foam stabilizer and optional functional admixtures; and wherein The active powder is selected from three or more of slag, coal ash, silica fume and metakaolin; The hardener is selected from two or more of sodium silicate, potassium silicate, potassium hydroxide and sodium hydroxide; The foaming agent is selected from one or more of hydrogen peroxide and aluminum powder; The foam stabilizer is selected from one or more of calcium stearate and silicone amide; and The optional functional admixture is selected from one or more of water reducers, retarders and pigments. 3. The fireproof green thermal insulation board as claimed in claim 2, wherein, The active powder is selected from three or more of 0.6-29.4% by weight of slag, 1.8-51.7% by weight of coal ash, 0.6-5.9% by weight of silica fume and 0.6-11.8% by weight of metakaolin; The hardener is selected from 17.6-35.3% by weight of sodium silicate, 17.6-35.3% by weight of potassium silicate, 0.6-8.8% by weight of potassium hydroxide and 0.6-8.8% by weight of sodium hydroxide or more; The foaming agent is selected from one or more of 1.8-5.9 wt % hydrogen peroxide and 1.8-5.9 wt % aluminum powder; The foam stabilizer is selected from one or more of 0.1-5.9% by weight of calcium stearate and 0.1-5.9% by weight of silicone amide; and The optional functional admixture is selected from one or more of 0-10% by weight of water reducing agent, 0-10% by weight of retarder and 0-10% by weight of pigment; All percentages above are based on the weight of the feedstock excluding water. 4. The fireproof green thermal insulation board according to claim 3, wherein, The active powder is selected from three or more of 5-20% by weight of slag, 5-40% by weight of coal ash, 1-4% by weight of silica fume and 5-11% by weight of metakaolin; The hardener is selected from two or more of 20-30% by weight sodium silicate, 20-30% by weight potassium silicate, 1-6% by weight potassium hydroxide and 1-6% by weight sodium hydroxide more; The foaming agent is selected from one or more of 2-5% by weight of hydrogen peroxide and 2-5% by weight of aluminum powder; The foam stabilizer is selected from one or more of 0.1-4% by weight of calcium stearate and 0.1-4% by weight of silicone amide; The optional functional admixture is selected from one or more of 0-6 wt % water reducing agent, 0-6 wt % setting retarder and 0-6 wt % pigment; and 2-6% by weight of palm fibers; All percentages above are based on the weight of the feedstock excluding water. 5. The fireproof green thermal insulation board of claim 1, wherein, based on the weight of the raw material other than water, the raw material contains 2-6 wt% palm fiber, and wherein the fiber length range of the palm fiber 3mm to 9mm. 6. The fireproof green thermal insulation board of claim 1, wherein 30-70% of the palm fibers have a fiber length of 2-6mm, 5-40% have a fiber length of 7-9mm, 3-30 % have a fiber length of 10-15mm. 7. The fireproof green thermal insulation board according to any one of claims 1-6, wherein the palm fiber is derived from oil palm fruit residue obtained after palm oil extraction, and the palm fiber has less than 20% Water content and less than 15% oil content. 8. The fireproof green thermal insulation board according to any one _of claims _2-7 , wherein the coal ash contains _SiO2 , _Al2O3 , _Fe2O3 and CaO, and wherein the CaO has The content does not exceed 10wt%. 9. The fireproof green thermal insulation board according to any one of claims 2-8, wherein the coal ash is Class F coal ash specified in the Chinese national standard GB/T1596-2005. 10. The fireproof green thermal insulation board according to any one of claims 2-9, wherein the slag is blast furnace slag of the S95 level specified in the Chinese national standard GB/T 18046-2008. 11. The fireproof green thermal insulation board according to any one of claims 2-10, wherein the hydrogen peroxide is an aqueous hydrogen peroxide solution of 20-60 wt%; and the sodium silicate is 20-40 Aqueous dispersion of sodium silicate at solids content. 12. The fireproof green thermal insulation board according to any one of claims 11, wherein the sodium silicate water dispersion is of the "Liquid-2" model specified in the Chinese national standard GB/T4209-2008. Liquid sodium silicate. 13. The fireproof green thermal insulation board according to any one of claims 1-12, wherein the coal ash is coal ash produced from a coal-fired power station, the slag is slag produced by a steelmaking plant, and the The palm fiber is derived from the oil palm fruit residue obtained after palm oil extraction. 14. A wall body system comprising the fireproof green thermal insulation board according to any one of claims 1-13. 15. The environmental protection preparation method of the high-strength, ultra-light, fire-proof green thermal insulation board according to any one of claims 1-13, the method comprises the step of mixing palm fiber with other raw materials; wherein based on raw materials other than water The raw material contains 0.1-10% by weight of palm fibers, and wherein the palm fibers have a fiber length ranging from 2 mm to 15 mm. 16. The method of claim 15, wherein the method comprises the steps of: a) Mix water, active powder, hardener, foam stabilizer, palm fiber and optional functional admixtures to homogeneity at a rotational speed of 400-800 rpm, wherein the volume ratio of water to raw materials other than water is 1 : 50 to 1:2; b) adding a blowing agent to the mixture of a) at 700-1000 rpm for 3-15 seconds to create a cell structure; c) pour the mixture of b) into a container mould and cure for 1-12 hours; d) demoulding and cutting the cured panel of c) to the desired size, and e) continue to cure the cut board of d) for 1-30 days; the raw materials other than water include active powder, hardener, foaming agent, foam stabilizer and optional functional admixtures; and wherein The active powder is selected from three or more of slag, coal ash, silica fume and metakaolin; The hardener is selected from two or more of sodium silicate, potassium silicate, potassium hydroxide and sodium hydroxide; The foaming agent is selected from one or more of hydrogen peroxide and aluminum powder; The foam stabilizer is selected from one or more of calcium stearate and silicone amide; and The optional functional admixture is selected from one or more of water reducers, retarders and pigments. 17. The method of claim 16, wherein step b) is performed in a temperature range of 15-35°C; step c) is performed in a temperature range of ≤ 100°C; and step c) is performed at ≥ 50% humidity Curing; Step d) is carried out when the mixture of step c) is sampled to a density range of 190-270 kg/ ^m3 .