CN103880376B - A light inorganic fireproof insulation board - Google Patents

Abstract

The invention discloses a light inorganic fireproof heat-insulation board which comprises the following raw materials in parts by weight: the foam concrete is formed by mixing and pouring foam and a cementing material which are used as main materials, wherein the mixing mass ratio of the foam to the cementing material is 9 (68-72). The light inorganic fireproof heat-preservation board has the functions of heat preservation, heat insulation, moisture prevention, fire prevention, utilization of three wastes and reduction of environmental pollution, does not need high-temperature calcination and forming during processing, achieves the effects of energy conservation and consumption reduction, and does not produce environmental pollution.

Description

A light inorganic fireproof insulation board

technical field

The invention relates to a new type of building material, in particular to a light inorganic fireproof and heat preservation board.

Background technique

According to the relevant regulations issued by the Fire Department of the Ministry of Public Security, residential buildings under construction must be installed with A-level external wall insulation, otherwise they will not pass the acceptance inspection. The National Standardization Management Committee officially released GB8624-2012 "Classification of Combustion Performance of Building Materials and Products", which will be implemented on October 1, 2013. This standard replaces the original standard GB8624-2006 "Classification of Combustion Behavior of Building Materials and Products". Mainly revised the division and classification criteria of combustion performance grades; added the combustion performance classification of special-purpose products; modified additional information and combustion performance grade identification, etc. The promulgation and implementation of this standard will play an important role in improving the fire safety of building materials and products in practical engineering applications, reducing fire hazards, standardizing enterprise production and facilitating the supervision and management of supervisory departments. The implementation of this standard has further promoted the application of inorganic fireproof insulation panels with Class A fireproof performance.

The insulation materials used in the market mainly include the following types: inorganic vitrified bead insulation mortar, perlite insulation board, polystyrene board (EPS), extruded plastic board (XPS) and foamed cement board. Both polystyrene board and extruded board are rigid foam materials prepared by different foaming and extrusion processes with organic matter such as polystyrene resin as the main raw material. Compared with other materials, the thermal insulation coefficient is low and the thermal insulation effect is good. However, due to the production process of XPS boards, the thermal stability is poor, and the protective mortar and paint on the outside of the thermal insulation system are prone to cracking and hollowing; and the fire resistance of organic thermal insulation boards is poor, which cannot reach the current national fire protection A Level mandatory standards, so many provinces in China have banned the use of organic insulation boards. Perlite thermal insulation board is an inorganic thermal insulation material. Its main advantage is that it has good flame retardancy and can reach Class A fire protection standards. Compared with organic materials (EPS, XPS, etc.), its thermal conductivity is relatively high. The foam insulation boards on the market generally have large pores, are difficult to control, and have a high water absorption rate, resulting in hollowing and pulverization of the wall.

Research on new inorganic thermal insulation and fireproof materials has become the development trend of this industry.

Contents of the invention

The invention discloses a light inorganic fireproof and heat preservation board. The board of the present invention is an energy-saving, environment-friendly, light heat-preserving and fire-proof board with a large number of closed pores, a new type of wall building material utilizing three wastes, and its production cost is low. The light inorganic fire-proof and heat-preserving board of the present invention has the advantages of heat preservation, heat insulation, moisture-proof, waterproof, fire prevention, utilization of three wastes, and reduction of environmental pollution; the board prepared by the present invention can be used for various building components of walls and boards that require heat preservation and sound insulation superior.

To achieve the above object, the present invention adopts the following technical solutions:

A light-weight inorganic fireproof and thermal insulation board, characterized in that it is made of foam and gelling material as the main material, and polycarboxylate water reducer and composite admixture as auxiliary materials.

The mixing mass ratio of described foam and gelling material is 9:(68-72);

The mixing mass ratio of the polycarboxylate water reducer to the gelling material is (0.5-0.8): 100;

The mixing mass ratio of the composite admixture to the gelling material is (5-10):100;

The foam is made by physical foaming of an aqueous solution of a blowing agent;

The aqueous solution of described blowing agent is prepared by following component raw materials of weight part:

Hexadecyltrimethylammonium chloride 5-7, sodium lauryl sulfate 0.8-1.2, octylphenol polyoxyethylene ether-102-4, water 180-200;

The gelling material is prepared by mixing the following component raw materials in parts by weight:

P.O52.5 Ordinary Portland cement 8-10, rapid hardening sulfoaluminate cement 0.8-1.2, fly ash 1-3, polypropylene chopped fiber 0.06,

The preparation method of described composite admixture is: a. get the raw material of following weight portion: iron slag 80-90, calcium carbonate 90-100, vermiculite 12-15, nanometer carbon 1-2, cerium oxide 1- 2. Zinc oxide 2-3, camphor essential oil 2-3, molybdenum trioxide 2-3, barium sulfate 30-34, triethyl citrate 1-2, titanate coupling agent TMC-TTS4-6, jade powder 1-2;

b. Calcinate iron ore slag, calcium carbonate, and vermiculite at 800-1000°C for 4-5h, cool to room temperature, take it out, add 3-4% sodium hydroxide solution to grind for 1-2 hours, then add 10-15% hydrochloric acid solution, adjust the pH value to 4-5, age for 10-12 hours, add sodium hydroxide solution to adjust the pH of the grinding liquid to be neutral, filter, and dry to obtain filler powder;

c. Mix the powder obtained above with other remaining ingredients, and disperse evenly at a high speed of 800-1000 rpm.

The light-weight inorganic fireproof and thermal insulation board is characterized in that it is made of foam and gelling material as the main material, and polycarboxylate water reducer and composite admixture as auxiliary materials.

The mixing mass ratio of described foam and gelling material is 9:70;

The mixing mass ratio of the polycarboxylate water reducer to the gelling material is (0.5-0.7): 100;

The mixing mass ratio of the composite admixture to the gelling material is (5-8):100;

The foam is made by physical foaming of an aqueous solution of a blowing agent;

The aqueous solution of described blowing agent is prepared by following component raw materials of weight part:

Hexadecyltrimethylammonium chloride 6, sodium lauryl sulfate 1, octylphenol polyoxyethylene ether-103, water 190;

The gelling material is prepared by mixing the following component raw materials in parts by weight:

P.O52.5 Ordinary Portland Cement 9, Rapid Hardening Sulphoaluminate Cement 0.9, Fly Ash 2, Polypropylene Chopped Fiber 0.06,

The preparation method of described composite admixture is: a. get the raw material of following weight portion: iron slag 85, calcium carbonate 96, vermiculite 13, nanometer carbon 1, cerium oxide 1, zinc oxide 2, camphor essential oil 3, Molybdenum trioxide 3, barium sulfate 32, triethyl citrate 1, titanate coupling agent TMC-TTS5, jade powder 2;

b. Calcinate iron ore slag, calcium carbonate, and vermiculite at 900°C for 4.5 hours, cool to room temperature, take it out, add 3-4% sodium hydroxide solution to grind for 1-2 hours, then add 10-15 % hydrochloric acid solution, adjust the pH value to 4-5, age for 10-12 hours, add sodium hydroxide solution to adjust the pH of the grinding liquid to be neutral, filter, and dry to obtain filler powder;

c. Mix the powder obtained above with other remaining ingredients, and disperse evenly at a high speed of 900 rpm.

Preparation method: the preparation method of light inorganic fire-proof and heat-preservation board, comprising the following steps:

(1) Preparation of aqueous solution of foaming agent

Weigh the raw materials of each component according to the formula ratio, dissolve the weighed cetyltrimethylammonium chloride in water, stir well, let stand for 9-11min, and then adjust the pH value to 3-4 with concentrated hydrochloric acid , after standing still for 9-11min, add octanylphenol polyoxyethylene ether-10, continue to stir for 8-10min, then let stand for 9-12min; finally add sodium lauryl sulfate, stir for 10-12min to prepare good hair The aqueous solution of foaming agent, let it stand for 2-2.5h, stand-by;

(2) Preparation of wet foam

Pour the water solution of the foaming agent that has been left standing into the air compressor, and keep the pressure at 0.1-0.3Mpa, and the foam will be produced. The foam needs to be left for 25-35 minutes until the density is 35±5kg/m ³ , and it is ready for use ;

(3) Preparation of foam slurry

Requirements, when the mass ratio of fixed water and gelling material is 0.45-0.47:1, add polycarboxylate water reducer, composite admixture, and the amount of water reducer is 0.5-0.8% of the gelling material, and prepare The cement slurry with a fluidity of 280mm is then added to the foam that has been left to stand in step (2) according to the formula ratio, and fully stirred to make a uniform fluid foam slurry. The specific operations are as follows:

a. According to the mixing ratio of the above requirements, add water into the mixing pot, add water reducing agent and gelling material, then stir at a slow speed of 40-45r/min for 25-35s, and increase the speed to 80-90r/min When adding the compound admixture, when all the admixture is added, keep stirring at the same speed for 10-20s, and then stir rapidly at a speed of 110-120r/min for 50-60s to fully disperse the slurry and obtain cement pulp;

b. Add the foam that has been left to stand in step (2) into the evenly stirred cement slurry according to the formula ratio. During the addition process, keep the mixer speed at 40-45r/min until the foam is added. This process lasts for about 28 -30s;

c. After all the materials are added, stir slowly for 4-5 minutes to make a uniform fluid foam slurry;

(4) Sheet forming

Pour the foam slurry prepared in step (3) into a molding mold for molding, and place it in a standard cement curing box for curing. The curing temperature is 18-22°C, the relative humidity is 90-95%, and the mold is cured for 22-25 hours. , and then after demoulding and curing to the test age, test the apparent density, compressive strength, water absorption and thermal conductivity properties respectively.

The polycarboxylate water reducer described in step (3) is a polycarboxylate water reducer prepared by the method of patent number 201010515271.2.

The size of the molding die described in step (4) is 100mm×100mm×100mm or 600mm×300mm×50mm.

Advantages of the present invention:

(1) Fire prevention and heat insulation, good environmental protection performance: this product is a grade A or inorganic material, its main raw material is inorganic material (cement), it will not burn, the fire resistance limit is more than 3 hours, and it will not produce toxic gases under high temperature conditions ; Because the closed cell rate of the product is >95%, it has good heat insulation performance.

(2) High compressive strength, strong cohesive force, and good compatibility: the plate prepared by this preparation process has small and uniform pore size and high strength. When the density is 300kg/ ^m3 , the 7-day compressive strength It is 6kg/cm ² ; the bonding strength with the wall is high, the drying shrinkage value of the board is low, and there is no hollowing and cracking phenomenon.

(3) Low density: The density of the board is controlled between 200-300㎏/m ³ , which can effectively reduce the load of the building.

(4) Good sound insulation performance: the sound insulation performance of the fireproof insulation board is 5-8 times that of ordinary cement, which fully solves the sound insulation problem of the living space.

(5) Improve the stability and lifespan of the insulation layer: the heat insulation layer of the fireproof insulation board has high stability and anti-aging performance, which can effectively ensure the flatness of the indoor floor without cracking, and its lifespan is 5-10 times that of the benzene board, which is More than 5 times that of perlite particles.

(6) Good moisture-proof performance: there will be no dew condensation around the warm water pipe during heating, and there will be no splitting between layers.

(7) Fast construction speed: 1000-3000 square meters can be constructed per shift, saving the construction period.

The board prepared by the invention can be used on various building components such as walls and boards that require thermal insulation, sound insulation and fire prevention.

detailed description

A light inorganic fireproof insulation board, the weight (kg) of its constituent raw materials is:

It is made of foam and gelling material as the main material, and polycarboxylate superplasticizer and composite admixture as auxiliary materials.

Wherein, the mixing mass ratio of foam and gelling material is 9:70;

The mixing mass ratio of polycarboxylate superplasticizer and gelling material is 0.6:100;

The mixing mass ratio of composite admixture and cementitious material is 7:100;

The aqueous solution of foaming agent is prepared from the following weight (kg) component raw materials:

Hexadecyltrimethylammonium chloride 6, sodium lauryl sulfate 1, octylphenol polyoxyethylene ether-103, water 190;

The gelling material is prepared by mixing the following component raw materials in weight (kg):

P.O52.5 Ordinary Portland Cement 9, Rapid Hardening Sulphoaluminate Cement 0.9, Fly Ash 2, Polypropylene Chopped Fiber 0.06,

The preparation method of composite admixture is: a. get the raw material of following weight (kg): iron slag 85, calcium carbonate 96, vermiculite 13, nano carbon 1, cerium oxide 1, zinc oxide 2, camphor essential oil 3, three Molybdenum oxide 3, barium sulfate 32, triethyl citrate 1, titanate coupling agent TMC-TTS5, jade powder 2;

b. Calcinate iron ore slag, calcium carbonate, and vermiculite at 900°C for 4.5 hours, cool to room temperature, take it out, add 3-4% sodium hydroxide solution to grind for 1-2 hours, then add 10-15 % hydrochloric acid solution, adjust the pH value to 4-5, age for 10-12 hours, add sodium hydroxide solution to adjust the pH of the grinding liquid to be neutral, filter, and dry to obtain filler powder;

c. Mix the powder obtained above with other remaining ingredients, and disperse evenly at a high speed of 900 rpm.

The preparation method of the light inorganic fire-proof and thermal insulation board comprises the following steps:

(1) Preparation of aqueous solution of foaming agent

Weigh the raw materials of each component according to the formula ratio, dissolve the weighed cetyltrimethylammonium chloride in water, stir well, let stand for 10min, then adjust the pH value to 3-4 with concentrated hydrochloric acid, and then After standing for 11 minutes, add octylphenol polyoxyethylene ether-10, continue to stir for 8-10 minutes, and then let stand for 11 minutes; finally add sodium lauryl sulfate, stir for 11 minutes to prepare the aqueous solution of foaming agent, let it stand Set for 2.5h, stand by;

(2) Preparation of wet foam

Pour the water solution of the foaming agent that has been placed into the air compressor, and keep the pressure at 0.2Mpa, and then the foam can be generated. The foam needs to be allowed to stand for 30-35 minutes until the density is 35±5kg/m ³ and is ready for use;

(3) Stirring of slurry

It is required that when the mass ratio of fixed water and cementitious material is 0.46:1, polycarboxylate-type water reducer is added, and the amount of water reducer is 0.5-0.8% of the cementitious material to prepare cement with a fluidity of 280mm. slurry, and then add the foam that has been left to stand in step (2) according to the formula ratio, and fully stir to make a uniform fluid foam slurry. The specific operations are as follows:

a. According to the mixing ratio of the above requirements, add water into the mixing pot, add water reducing agent and gelling material, then stir at a slow speed of 43r/min for 28s, increase the speed to 50r/min, add compound blending When all the admixtures are added, keep stirring at the same speed for another 15s, and then stir rapidly at a speed of 115r/min for 55s to fully disperse the slurry and obtain cement slurry;

b. Add the foam that has been left to stand in step (2) into the evenly stirred cement slurry according to the formula ratio. During the addition process, keep the mixer speed at 44r/min until the foam is added. This process lasts for about 29s;

c. After all the materials are added, stir slowly for 4-5 minutes to make a uniform fluid foam slurry;

(4) Sheet forming

The foam slurry prepared in step (3) is poured into a molding mold with a specification of 100mm×100mm×100mm or 600mm×300mm×50mm, and placed in a cement standard curing box for curing. The curing temperature is 20°C and the relative humidity is 90-95%, with mold curing for 24 hours, and then after demoulding and curing until the test age, test the apparent density, compressive strength, water absorption and thermal conductivity performance respectively.

The polycarboxylate water reducer described in step (3) is a polycarboxylate water reducer prepared by the method of patent number 201010515271.2.

The performance detection of the light inorganic fire-proof and thermal insulation board prepared by the inventive method is as follows table 1:

Table 1 All performance test results of lightweight inorganic fireproof and thermal insulation panels

serial number Test items test result 1 Dry density, kg/ ^m3 280 2 Thermal conductivity (25℃), W/(m K) 0.06 3 Compressive strength, MPa 0.6 4 Tensile strength, MPa 0.15 5 Water absorption, % 6 6 Drying shrinkage value, mm/m 0.60 7 Softening coefficient 0.85 8 Carbonization coefficient 0.95 9 Combustion performance A ₁

It can be drawn from the table that the density of the board is small, the thermal conductivity is small, the compressive strength is large, the tensile strength is large, and the water absorption rate is low, so the board of the present invention has light weight, heat preservation, good compression resistance and tensile performance, and It has the characteristics of moisture-proof, waterproof and fire-proof.

Claims (2)

1. A lightweight inorganic fireproof insulation board, characterized in that it is formed by mixing foam and gelling material as the main material, and polycarboxylate water reducer and composite admixture as auxiliary materials. The mixing mass ratio of described foam and gelling material is 9:(68-72); The mixing mass ratio of the polycarboxylate water reducer to the gelling material is (0.5-0.8): 100; The mixing mass ratio of the composite admixture to the gelling material is (5-10):100; The foam is made by physical foaming of an aqueous solution of a blowing agent; The aqueous solution of described whipping agent is prepared by following component raw materials of weight part: Hexadecyltrimethylammonium chloride 5-7, sodium lauryl sulfate 0.8-1.2, octylphenol polyoxyethylene ether-102-4, water 180-200; The gelling material is prepared by mixing the following component raw materials in parts by weight: P.O52.5 Ordinary Portland cement 8-10, rapid hardening sulfoaluminate cement 0.8-1.2, fly ash 1-3, polypropylene chopped fiber 0.06, The preparation method of described composite admixture is: a. get the raw material of following weight portion: iron slag 80-90, calcium carbonate 90-100, vermiculite 12-15, nanometer carbon 1-2, cerium oxide 1- 2. Zinc oxide 2-3, camphor essential oil 2-3, molybdenum trioxide 2-3, barium sulfate 30-34, triethyl citrate 1-2, titanate coupling agent TMC-TTS4-6, jade powder 1-2; b. Calcinate iron ore slag, calcium carbonate, and vermiculite at 800-1000°C for 4-5h, cool to room temperature, take it out, add 3-4% sodium hydroxide solution to grind for 1-2 hours, then add 10-15% hydrochloric acid solution, adjust the pH value to 4-5, age for 10-12 hours, add sodium hydroxide solution to adjust the pH of the grinding liquid to be neutral, filter, and dry to obtain filler powder; c. Mix the powder obtained above with other remaining ingredients, and disperse evenly at a high speed of 800-1000 rpm. 2. The lightweight inorganic fire-proof and thermal insulation board according to claim 1, characterized in that: it is made of foam and gelling material as the main material, and polycarboxylate water reducer and composite admixture as auxiliary materials. The mixing mass ratio of described foam and gelling material is 9:70; The mixing mass ratio of the polycarboxylate water reducer to the gelling material is (0.5-0.7): 100; The mixing mass ratio of the composite admixture to the gelling material is (5-8):100; The foam is made by physical foaming of an aqueous solution of a blowing agent; The aqueous solution of described whipping agent is prepared by following component raw materials of weight part: Hexadecyltrimethylammonium chloride 6, sodium lauryl sulfate 1, octylphenol polyoxyethylene ether-103, water 190; The gelling material is prepared by mixing the following component raw materials in parts by weight: P.O52.5 Ordinary Portland cement 9, fast hardening sulfoaluminate cement 0.9, fly ash 2, polypropylene chopped fiber 0.06, The preparation method of described composite admixture is: a. get the raw material of following weight portion: iron slag 85, calcium carbonate 96, vermiculite 13, nanometer carbon 1, cerium oxide 1, zinc oxide 2, camphor essential oil 3, Molybdenum trioxide 3, barium sulfate 32, triethyl citrate 1, titanate coupling agent TMC-TTS5, jade powder 2; b. Calcinate iron ore slag, calcium carbonate, and vermiculite at 900°C for 4.5 hours, cool to room temperature, take it out, add 3-4% sodium hydroxide solution to grind for 1-2 hours, then add 10-15 % hydrochloric acid solution, adjust the pH value to 4-5, age for 10-12 hours, add sodium hydroxide solution to adjust the pH of the grinding liquid to be neutral, filter, and dry to obtain filler powder; c. Mix the powder obtained above with other remaining ingredients, and disperse evenly at a high speed of 900 rpm.