CN108610092A - A kind of high-strength building thermal insulation material and preparation method thereof - Google Patents
A kind of high-strength building thermal insulation material and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/28—Polysaccharides or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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Abstract
A kind of high-strength building thermal insulation material of present invention offer and preparation method thereof, is prepared by following component：Nano-oxide, glass fibre, polystyrene resin, polyalcohol, additive, carboxymethyl cellulose, calcium hydroxide, water-soluble binder, surfactant, dispersant, flyash and deionized water.The raw material environmentally friendly and economical of the present invention, preparation method is simple, the thermal insulation material prepared, will not bring harm to human body and environment, be readily transported and construct, and has good anti-corrosion, heat insulation effect.
Description
Technical field
The invention belongs to thermal insulation material technical fields, and in particular to a kind of high-strength building thermal insulation material and its preparation side
Method.
Background technology
China's building exterior wall material is mainly armored concrete, clay turn so that the poor thermal insulation property of wall, thermal coefficient
Higher use thermal insulation material in external wall can reduce the thermal coefficient of wall, reduce building energy consumption, energy saving.It is for building
Heat preserving and insulating material type is various, according to the difference for using position, can be divided into inner, external wall heat preserving and insulating material；According to material
Organic insulation material, inorganic heat insulation material and compound insulating material can be divided into.
Currently, restriction of the single material thermal insulation material by material itself, heat-insulating property, fire-retardant can not be taken into account well
Performance and mechanical property.Inorganic building thermal insulation material is the building thermal insulation material being developed earliest, such material has resistance to
Soda acid, it is corrosion-resistant, stability is good the advantages that, but such material thermal conductivity is high, and heat-insulating property is poor and unit weight is big.It is organic
Thermal insulation material is usually more empty class foamed plastics, and density is smaller, and good mechanical properties simultaneously have good resistance to compression, tensile toughness,
But its decomposition temperature is relatively low, decomposition caused heat release is big, does not have flame retardant property.Therefore, it is gradual to prepare advanced composite material (ACM) thermal insulation board
Become research hotspot.
Publication No. CN102643490A discloses a kind of Polystyrene resin foam board, to compound polystyrene tree
Fat is matrix, is aided with bubble nucleating agent, antioxidant and fire retardant and is made into polystyrene resin composite, using supercritical CO2Hair
Infusion is fabricated by extrusion foaming device using extrusion foaming method.Compounding polystyrene resin therein is by using this
The general purpose polystyrene that body polymerization methods polymerize is compounded with high molecular weight polystyrene by 90: 10~20: 80 mass ratio
It obtains, which there is the expansion ratio more than 30 times, open cell content to be less than 20%, and thickness is more than
15cm, sectional area are more than 1800cm2.But the flame retardant effect of the material is still to be improved.Publication No. CN101795857A, it is open
A kind of preparation method of aerogel composite, glass fibre is immersed in after being mixed with catalyst using silicon precursor solution
Middle gel forming, then carry out supercritical drying and prepare aerogel plate, composite material heat-proof quality prepared by this preparation method is preferable,
But the method process is cumbersome, needs the supercritical drying of complex process, cost higher.Publication No. CN103553502A, it is public
A kind of inorganic light heat preservation board containing aerosil is opened, but because the dispersion degree of wherein aerosil is poor,
Leading to be formed by composite material, there are thermal and insulating performance is relatively low and each position heat-proof quality, mechanical strength are inhomogenous etc. lacks
It falls into, has seriously affected the comprehensive performance of these composite materials.
In summary, it is therefore desirable to a kind of better thermal insulation material, to improve the deficiencies in the prior art, to push building
The development of industry.
Invention content
The object of the present invention is to provide a kind of high-strength building thermal insulation material and preparation method thereof, raw material of the invention environmental protection
Again economical, preparation method is simple, the thermal insulation material prepared, will not bring harm to human body and environment, be readily transported and apply
Work has good anti-corrosion, heat insulation effect.
The present invention provides the following technical solutions：
A kind of high-strength building thermal insulation material, includes the raw material of following parts by weight：11-15 parts of nano-oxide, glass fibre 10-
14 parts, 8-12 parts of polystyrene resin, 6-8 parts of polyalcohol, 4-7 parts of additive, 7-11 parts of carboxymethyl cellulose, calcium hydroxide 5-
7 parts, 4-7 parts of water-soluble binder, 3-5 parts of surfactant, 2-4 parts of dispersant, 6-9 parts of flyash and deionized water 8-12
Part.
Preferably, the thermal insulation material includes the raw material of following parts by weight：13-15 parts of nano-oxide, glass fibre 10-
12 parts, 9-12 parts of polystyrene resin, 6-7 parts of polyalcohol, 4-6 parts of additive, 7-10 parts of carboxymethyl cellulose, calcium hydroxide 5-
6 parts, 4-6 parts of water-soluble binder, 3-4 parts of surfactant, 2-3 parts of dispersant, 6-8 parts of flyash and deionized water 8-10
Part.
Preferably, the thermal insulation material includes the raw material of following parts by weight：14 parts of nano-oxide, 11 parts of glass fibre,
11 parts of polystyrene resin, 6 parts of polyalcohol, 5 parts of additive, 9 parts of carboxymethyl cellulose, 5 parts of calcium hydroxide, water-soluble binder
9 parts of 5 parts, 3 parts of surfactant, 2 parts of dispersant, 7 parts of flyash and deionized water.
A kind of preparation method of high-strength building thermal insulation material, including following preparation process：
A, nano-oxide, glass fibre, carboxymethyl cellulose, calcium hydroxide, flyash and deionized water are uniformly mixed, are led
Enter in cutter, stirring shearing 0.8-1.2h, obtains mixture one under the rotating speed of 280-300r/min；
B, polystyrene resin, polyalcohol, additive are added into mixture one, imports in reaction kettle, is heated at 86-92 DEG C
And it is stirred to react 0.6-0.8h, obtain mixture two；
C, water-soluble binder, surfactant and dispersant are added into mixture two, reacts 20- at 78-80 DEG C
24min after being cooled to room temperature, obtains mixture three；
D, mixture three is imported into melting extrusion in double screw extruder, then imported in mold, be dried to and contain at 80-83 DEG C
Water can be obtained finished product after 3-5%, demoulding.
Preferably, the nano-oxide of the step a is nano zine oxide, nano magnesia, nano aluminium oxide, nano oxygen
Change titanium and nano silicon oxide in mass ratio 2:2:2:1:1 mixes.
Preferably, the polyalcohol of the step b is that glycerine, diglycol, sorbierite and 1,2-PD press matter
Measure ratio 1:2:2:1 mixes.
Preferably, the additive of the step b is N, N- dimethylethanolamines, dibutyl tin laurate and triethanolamine
In mass ratio 3:1:1 mixes.
Preferably, the water-soluble binder of the step c is acetate starch, carbamate starch, octenyl succinic
Acid esters starch and dodecenylsuccinic anhydride starch in mass ratio 5:5:2:3 mix.
Preferably, the surfactant sodium sulfate of polyethenoxy ether of fatty alcohol of the step c and alginate propylene glycol press matter
Measure ratio 1:2 mix.
Preferably, the dispersant liq paraffin of the step c and low viscosity methyl-silicone oil mass ratio 1:3 mix.
The beneficial effects of the invention are as follows：
The raw material environmentally friendly and economical of the present invention, preparation method is simple, the thermal insulation material prepared, will not band to human body and environment
It endangers, is readily transported and constructs, there is good anti-corrosion, heat insulation effect.
Nano-oxide in the present invention is nano zine oxide, nano magnesia, nano aluminium oxide, nano-titanium oxide and receives
The proportioning of rice silica, under the ratio, a variety of nano-oxides with microcellular structure, concrete dynamic modulus, high-specific surface area characteristic
In conjunction with so that thermal coefficient, the water absorption rate of the thermal insulation material of preparation are relatively low, and compressive strength significantly increases.
Polyalcohol in the present invention is the proportioning of glycerine, diglycol, sorbierite and 1,2-PD, in the ratio
Under example, the surface-active of raw material in mixture one can be improved, to improve its dispersibility, it is made preferably to be dispersed in mixing object
In system, good skeleton, network are formed, to enhance the intensity of finished product.
Additive in the present invention is N, N- dimethylethanolamines, dibutyl tin laurate and triethanolamine proportioning,
Under the ratio, promote reaction efficiency, accelerate reaction speed, so as to shorten preparation flow, improves the preparation efficiency of the present invention.
Soluble binder in the present invention be acetate starch, carbamate starch, octenyl succinate starch and
The proportioning of dodecenylsuccinic anhydride starch, the problem of leakage which solve material, since the starch containing ester group is with hydrophilic
With oleophylic amphotericity, obtained building thermal insulation material has good caking property, workability, and its compared with common building
Viscosity is preferable so that it has better compatibility in mixture system.
Specific implementation mode
Embodiment 1
A kind of high-strength building thermal insulation material, includes the raw material of following parts by weight：15 parts of nano-oxide, 10 parts of glass fibre,
8 parts of polystyrene resin, 6 parts of polyalcohol, 7 parts of additive, 7 parts of carboxymethyl cellulose, 7 parts of calcium hydroxide, water-soluble binder 7
Part, 5 parts of surfactant, 2 parts of dispersant, 9 parts of flyash and 8 parts of deionized water.
A kind of preparation method of high-strength building thermal insulation material, including following preparation process：
A, nano-oxide, glass fibre, carboxymethyl cellulose, calcium hydroxide, flyash and deionized water are uniformly mixed, are led
Enter in cutter, stirring shearing 0.8h, obtains mixture one under the rotating speed of 300r/min；
B, polystyrene resin, polyalcohol, additive are added into mixture one, imports in reaction kettle, is heated simultaneously at 92 DEG C
It is stirred to react 0.8h, obtains mixture two；
C, water-soluble binder, surfactant and dispersant are added into mixture two, 24min is reacted at 78 DEG C, it is cooling
To room temperature, mixture three is obtained；
D, mixture three is imported into melting extrusion in double screw extruder, then imported in mold, is dried at 83 DEG C aqueous
Amount can be obtained finished product after 5%, demoulding.
The nano-oxide of step a is nano zine oxide, nano magnesia, nano aluminium oxide, nano-titanium oxide and nanometer
Silica in mass ratio 2:2:2:1:1 mixes.
The polyalcohol of step b is glycerine, diglycol, sorbierite and 1,2-PD in mass ratio 1:2:2:1
It mixes.
The additive of step b is N, N- dimethylethanolamines, dibutyl tin laurate and triethanolamine in mass ratio 3:
1:1 mixes.
The water-soluble binder of step c is acetate starch, carbamate starch, octenyl succinate starch and ten
Dialkylene succinate starch in mass ratio 5:5:2:3 mix.
The surfactant sodium sulfate of polyethenoxy ether of fatty alcohol and alginate propylene glycol in mass ratio 1 of step c:2 mixing
It forms.
The dispersant liq paraffin and low viscosity methyl-silicone oil mass ratio 1 of step c:3 mix.
Embodiment 2
A kind of high-strength building thermal insulation material, includes the raw material of following parts by weight：15 parts of nano-oxide, 12 parts of glass fibre,
9 parts of polystyrene resin, 7 parts of polyalcohol, 4 parts of additive, 7 parts of carboxymethyl cellulose, 6 parts of calcium hydroxide, water-soluble binder 6
Part, 4 parts of surfactant, 3 parts of dispersant, 6 parts of flyash and 8 parts of deionized water.
A kind of preparation method of high-strength building thermal insulation material, including following preparation process：
A, nano-oxide, glass fibre, carboxymethyl cellulose, calcium hydroxide, flyash and deionized water are uniformly mixed, are led
Enter in cutter, stirring shearing 1.2h, obtains mixture one under the rotating speed of 280r/min；
B, polystyrene resin, polyalcohol, additive are added into mixture one, imports in reaction kettle, is heated simultaneously at 86 DEG C
It is stirred to react 0.8h, obtains mixture two；
C, water-soluble binder, surfactant and dispersant are added into mixture two, 24min is reacted at 80 DEG C, it is cooling
To room temperature, mixture three is obtained；
D, mixture three is imported into melting extrusion in double screw extruder, then imported in mold, is dried at 83 DEG C aqueous
Amount can be obtained finished product after 3%, demoulding.
The nano-oxide of step a is nano zine oxide, nano magnesia, nano aluminium oxide, nano-titanium oxide and nanometer
Silica in mass ratio 2:2:2:1:1 mixes.
The polyalcohol of step b is glycerine, diglycol, sorbierite and 1,2-PD in mass ratio 1:2:2:1
It mixes.
The additive of step b is N, N- dimethylethanolamines, dibutyl tin laurate and triethanolamine in mass ratio 3:
1:1 mixes.
The water-soluble binder of step c is acetate starch, carbamate starch, octenyl succinate starch and ten
Dialkylene succinate starch in mass ratio 5:5:2:3 mix.
The surfactant sodium sulfate of polyethenoxy ether of fatty alcohol and alginate propylene glycol in mass ratio 1 of step c:2 mixing
It forms.
The dispersant liq paraffin and low viscosity methyl-silicone oil mass ratio 1 of step c:3 mix.
Embodiment 3
A kind of high-strength building thermal insulation material, includes the raw material of following parts by weight：14 parts of nano-oxide, 11 parts of glass fibre,
11 parts of polystyrene resin, 6 parts of polyalcohol, 5 parts of additive, 9 parts of carboxymethyl cellulose, 5 parts of calcium hydroxide, water-soluble binder
9 parts of 5 parts, 3 parts of surfactant, 2 parts of dispersant, 7 parts of flyash and deionized water.
A kind of preparation method of high-strength building thermal insulation material, including following preparation process：
A, nano-oxide, glass fibre, carboxymethyl cellulose, calcium hydroxide, flyash and deionized water are uniformly mixed, are led
Enter in cutter, stirring shearing 0.8h, obtains mixture one under the rotating speed of 300r/min；
B, polystyrene resin, polyalcohol, additive are added into mixture one, imports in reaction kettle, is heated simultaneously at 86 DEG C
It is stirred to react 0.8h, obtains mixture two；
C, water-soluble binder, surfactant and dispersant are added into mixture two, 24min is reacted at 78 DEG C, it is cooling
To room temperature, mixture three is obtained；
D, mixture three is imported into melting extrusion in double screw extruder, then imported in mold, is dried at 83 DEG C aqueous
Amount can be obtained finished product after 5%, demoulding.
The nano-oxide of step a is nano zine oxide, nano magnesia, nano aluminium oxide, nano-titanium oxide and nanometer
Silica in mass ratio 2:2:2:1:1 mixes.
The polyalcohol of step b is glycerine, diglycol, sorbierite and 1,2-PD in mass ratio 1:2:2:1
It mixes.
The additive of step b is N, N- dimethylethanolamines, dibutyl tin laurate and triethanolamine in mass ratio 3:
1:1 mixes.
The water-soluble binder of step c is acetate starch, carbamate starch, octenyl succinate starch and ten
Dialkylene succinate starch in mass ratio 5:5:2:3 mix.
The surfactant sodium sulfate of polyethenoxy ether of fatty alcohol and alginate propylene glycol in mass ratio 1 of step c:2 mixing
It forms.
The dispersant liq paraffin and low viscosity methyl-silicone oil mass ratio 1 of step c:3 mix.
Comparative example 1
Comparison is detected using common thermal insulation material in the prior art.
Finished product prepared by above example and comparative example is detected, following detection data is obtained：
Table one：
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 |
| Bulk density（kg/m3） | 558 | 554 | 553 | 562 |
| Compression strength（MPa） | 11.1 | 10.9 | 11.3 | 7.8 |
| Flexural strength（MPa） | 7.4 | 7.5 | 7.8 | 5.8 |
| Thermal coefficient（W/m·k） | 0.046 | 0.048 | 0.045 | 0.092 |
| Hydrophobic rate（%） | 96 | 96 | 97 | 95 |
| Combustion rating | B1 | B1 | B1 | B1 |
By the experimental data of one gained of table, it can be deduced that, the properties of finished product prepared by preparation method of the invention are significantly excellent
Different from common product in the prior art, and the preferred preparation method in the embodiment of the present invention 3, obtain at moral character
It can be the most excellent.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features.All essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of high-strength building thermal insulation material, which is characterized in that include the raw material of following parts by weight：Nano-oxide 11-15
Part, 10-14 parts of glass fibre, 8-12 parts of polystyrene resin, 6-8 parts of polyalcohol, 4-7 parts of additive, carboxymethyl cellulose 7-
11 parts, 5-7 parts of calcium hydroxide, 4-7 parts of water-soluble binder, 3-5 parts of surfactant, 2-4 parts of dispersant, 6-9 parts of flyash
With 8-12 parts of deionized water.
2. a kind of high-strength building thermal insulation material according to claim 1, which is characterized in that the thermal insulation material include with
The raw material of lower parts by weight：13-15 parts of nano-oxide, 10-12 parts of glass fibre, 9-12 parts of polystyrene resin, polyalcohol 6-7
Part, 4-6 parts of additive, 7-10 parts of carboxymethyl cellulose, 5-6 parts of calcium hydroxide, 4-6 parts of water-soluble binder, surfactant
8-10 parts of 3-4 parts, 2-3 parts of dispersant, 6-8 parts of flyash and deionized water.
3. a kind of high-strength building thermal insulation material according to claim 1, which is characterized in that the thermal insulation material include with
The raw material of lower parts by weight：14 parts of nano-oxide, 11 parts of glass fibre, 11 parts of polystyrene resin, 6 parts of polyalcohol, additive 5
Part, 9 parts of carboxymethyl cellulose, 5 parts of calcium hydroxide, 5 parts of water-soluble binder, 3 parts of surfactant, 2 parts of dispersant, flyash
7 parts and 9 parts of deionized water.
4. a kind of preparation method of high-strength building thermal insulation material of claim 1-3 any one of them, which is characterized in that including
Following preparation process：
A, nano-oxide, glass fibre, carboxymethyl cellulose, calcium hydroxide, flyash and deionized water are uniformly mixed, are led
Enter in cutter, stirring shearing 0.8-1.2h, obtains mixture one under the rotating speed of 280-300r/min；
B, polystyrene resin, polyalcohol, additive are added into mixture one, imports in reaction kettle, is heated at 86-92 DEG C
And it is stirred to react 0.6-0.8h, obtain mixture two；
C, water-soluble binder, surfactant and dispersant are added into mixture two, reacts 20- at 78-80 DEG C
24min after being cooled to room temperature, obtains mixture three；
D, mixture three is imported into melting extrusion in double screw extruder, then imported in mold, be dried to and contain at 80-83 DEG C
Water can be obtained finished product after 3-5%, demoulding.
5. a kind of preparation method of high-strength building thermal insulation material according to claim 4, which is characterized in that the step
The nano-oxide of a is that nano zine oxide, nano magnesia, nano aluminium oxide, nano-titanium oxide and nano silicon oxide press quality
Than 2:2:2:1:1 mixes.
6. a kind of preparation method of high-strength building thermal insulation material according to claim 4, which is characterized in that the step
The polyalcohol of b is glycerine, diglycol, sorbierite and 1,2-PD in mass ratio 1:2:2:1 mixes.
7. a kind of preparation method of high-strength building thermal insulation material according to claim 4, which is characterized in that the step
The additive of b is N, N- dimethylethanolamines, dibutyl tin laurate and triethanolamine in mass ratio 3:1:1 mixes.
8. a kind of preparation method of high-strength building thermal insulation material according to claim 4, which is characterized in that the step
The water-soluble binder of c is acetate starch, carbamate starch, octenyl succinate starch and dodecenyl-succinic acid
Ester starch in mass ratio 5:5:2:3 mix.
9. a kind of preparation method of high-strength building thermal insulation material according to claim 4, which is characterized in that the step
The surfactant sodium sulfate of polyethenoxy ether of fatty alcohol and alginate propylene glycol in mass ratio 1 of c:2 mix.
10. a kind of preparation method of high-strength building thermal insulation material according to claim 4, which is characterized in that the step
The dispersant liq paraffin and low viscosity methyl-silicone oil mass ratio 1 of rapid c:3 mix.
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| CN111892421A (en) * | 2019-05-05 | 2020-11-06 | 南京和润隆环保科技有限公司 | Preparation method of noise-reducing insulation board |
| CN115557729A (en) * | 2022-07-27 | 2023-01-03 | 重庆英仕达新型建材有限公司 | Light heat-insulating material for building and preparation process thereof |
| CN115557729B (en) * | 2022-07-27 | 2023-12-08 | 重庆英仕达新型建材有限公司 | Light heat-insulating material for building and preparation process thereof |
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