Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, inorganic heat insulation material of a kind of high insulating effect and preparation method thereof is provided.
The present invention is achieved through the following technical solutions:
A kind of silica containing inorganic heat insulation material, by weight percentage, comprise silicon-dioxide 30-50 part, pearlstone 16-30 part, magnesium oxide 6-12 part, water glass 12-18 part, potassium silicate 12-18 part, aggregate chips 3-7 part, terra alba 2-5 part, polypropylene fibre 3-6 part, Xylo-Mucine 5-10 part and calcium hydroxide 4-8 part; The granularity of described silicon-dioxide and pearlstone is 200 orders.
The silica containing inorganic heat insulation material of described one, described water glass and the weight ratio of potassium silicate are 1: 1.
The silica containing inorganic heat insulation material of described one, by weight percentage, comprise 6 parts, 42 parts of silicon-dioxide, 24 parts of pearlstones, 8 parts, magnesium oxide, 16 parts of water glass, 16 parts of potassium silicates, 5 parts of aggregate chips, 3 parts of terra albas, 4 parts of polypropylene fibres, 8 parts of Xylo-Mucines and calcium hydroxide.
The preparation method of described a kind of silica containing inorganic heat insulation material, Xylo-Mucine is mixed with to 1% sodium carboxymethyl cellulose solution, add water glass, potassium silicate, magnesium oxide and calcium hydroxide, fully stir, obtain gel material, by silicon-dioxide, pearlstone, aggregate chips, terra alba and polypropylene fibre are proportionally placed in mixing machine and are uniformly mixed, then being placed in ball mill wet ball grinding pulverizes again, the slurry obtaining is left standstill after pumping upper strata moisture and fully mixed with gel material, be placed in dryer, under 70-80 DEG C of condition, dry and obtain inorganic heat insulation material.
The preparation method of described a kind of silica containing inorganic heat insulation material, when ball milling, the weight ratio of material, water and ball is 1: 2-3: 4-5.
The preparation method of described a kind of silica containing inorganic heat insulation material, drying time is 6-8h.
Expanded perlite thermal-nsulation is effective, but its maximum operation (service) temperature is 800 DEG C, and poor water resistance, so content is too much unsuitable, magnesium oxide has extremely fireproof insulating property, but easily absorb moisture and carbonic acid gas, so magnesium oxide can not be too much, otherwise water-intake rate variation, but can not be very few, otherwise flame retardant properties is not good, and silica chemistry is stable, there is strong adsorptivity, can be adsorbed on pearlstone and magnesian surrounding, prevent that pearlstone and magnesium oxide from absorbing moisture, cause material property to reduce.
Add polypropylene fibre can improve the ultimate compression strength of material, fully stick together by water glass, potassium silicate and Xylo-Mucine, ensure homogeneity and the stability of material.
Beneficial effect of the present invention is as follows:
The present invention adopts inorganics as raw material, and formula is reasonable, and raw material all easily obtains, cost is lower, preparation method is simple, and the lagging material preparing is nonpoisonous and tasteless, environmental protection, high insulating effect, its thermal conductivity is 0.01-0.08w/ (m.k), and burning grade is A level, and maximum operation (service) temperature is 1000 DEG C, ultimate compression strength is 0.8-1.0MPa, and water-intake rate is less than or equal to 0.1%.
Embodiment
Embodiment 1
In the present embodiment, a kind of silica containing inorganic heat insulation material, by weight percentage, comprise 6 parts, 42 parts of silicon-dioxide, 24 parts of pearlstones, 8 parts, magnesium oxide, 16 parts of water glass, 16 parts of potassium silicates, 5 parts of aggregate chips, 3 parts of terra albas, 4 parts of polypropylene fibres, 8 parts of Xylo-Mucines and calcium hydroxide.
Xylo-Mucine is mixed with to 1% sodium carboxymethyl cellulose solution, adds water glass, potassium silicate, magnesium oxide and calcium hydroxide, fully stir, obtain gel material; Silicon-dioxide, pearlstone, aggregate chips, terra alba and polypropylene fibre are proportionally placed in to mixing machine to be uniformly mixed, then being placed in ball mill wet ball grinding pulverizes again, the slurry obtaining is left standstill after pumping upper strata moisture and fully mixed with gel material, be placed in dryer, under 80 DEG C of conditions, dry and obtain inorganic heat insulation material.Wherein, when ball milling, the weight ratio of material, water and ball is 1: 3: 5, and drying time is 8h.
Embodiment 2
In the present embodiment, a kind of silica containing inorganic heat insulation material, by weight percentage, comprise 4 parts, 30 parts of silicon-dioxide, 30 parts of pearlstones, 6 parts, magnesium oxide, 12 parts of water glass, 12 parts of potassium silicates, 3 parts of aggregate chips, 2 parts of terra albas, 6 parts of polypropylene fibres, 10 parts of Xylo-Mucines and calcium hydroxide; The granularity of described silicon-dioxide and pearlstone is 200 orders.
Xylo-Mucine is mixed with to 1% sodium carboxymethyl cellulose solution, add water glass, potassium silicate, magnesium oxide and calcium hydroxide, fully stir, obtain gel material, silicon-dioxide, pearlstone, aggregate chips, terra alba and polypropylene fibre are proportionally placed in to mixing machine to be uniformly mixed, then being placed in ball mill wet ball grinding pulverizes again, the slurry obtaining is left standstill after pumping upper strata moisture and fully mixed with gel material, be placed in dryer, under 70 DEG C of conditions, dry and obtain inorganic heat insulation material.Wherein, when ball milling, the weight ratio of material, water and ball is 1: 2: 4, and drying time is 6h.
Embodiment 3
In the present embodiment, a kind of silica containing inorganic heat insulation material, by weight percentage, comprise 8 parts, 50 parts of silicon-dioxide, 16 parts of pearlstones, 12 parts, magnesium oxide, 18 parts of water glass, 18 parts of potassium silicates, 7 parts of aggregate chips, 5 parts of terra albas, 3 parts of polypropylene fibres, 5 parts of Xylo-Mucines and calcium hydroxide; The granularity of described silicon-dioxide and pearlstone is 200 orders.
The preparation method of described a kind of silica containing inorganic heat insulation material, Xylo-Mucine is mixed with to 1% sodium carboxymethyl cellulose solution, add water glass, potassium silicate, magnesium oxide and calcium hydroxide, fully stir, obtain gel material, by silicon-dioxide, pearlstone, aggregate chips, terra alba and polypropylene fibre are proportionally placed in mixing machine and are uniformly mixed, then being placed in ball mill wet ball grinding pulverizes again, the slurry obtaining is left standstill after pumping upper strata moisture and fully mixed with gel material, be placed in dryer, under 70-80 DEG C of condition, dry and obtain inorganic heat insulation material.Wherein, when ball milling, the weight ratio of material, water and ball is 1: 3: 4, and drying time is 8h.
Comparative example 1
In this comparative example, a kind of silica containing inorganic heat insulation material, by weight percentage, comprise 10 parts, 60 parts of silicon-dioxide, 10 parts of pearlstones, 15 parts, magnesium oxide, 20 parts of water glass, 10 parts of potassium silicates, 10 parts of aggregate chips, 8 parts of terra albas, 10 parts of polypropylene fibres, 12 parts of Xylo-Mucines and calcium hydroxide.
The preparation method of described a kind of silica containing inorganic heat insulation material, Xylo-Mucine is mixed with to 1% sodium carboxymethyl cellulose solution, add water glass, potassium silicate, magnesium oxide and calcium hydroxide, fully stir, obtain gel material, by silicon-dioxide, pearlstone, aggregate chips, terra alba and polypropylene fibre are proportionally placed in mixing machine and are uniformly mixed, then being placed in ball mill wet ball grinding pulverizes again, the slurry obtaining is left standstill after pumping upper strata moisture and fully mixed with gel material, be placed in dryer, under 80 DEG C of conditions, dry and obtain inorganic heat insulation material.Wherein, when ball milling, the weight ratio of material, water and ball is 1: 4: 6, and drying time is 8h.
Comparative example, compared with embodiment 1,2,3, is the composition difference of each raw material, although there is no the effect of embodiment 1,2,3, still good than general performance of heat protective material, ultimate compression strength is high, and water-intake rate is low.
Comparative example 2
In the present embodiment, a kind of silica containing inorganic heat insulation material, by weight percentage, comprise 4 parts, 30 parts of silicon-dioxide, 30 parts of pearlstones, 6 parts, magnesium oxide, 12 parts of water glass, 12 parts of potassium silicates, 3 parts of aggregate chips, 2 parts of terra albas, 6 parts of polypropylene fibres, 10 parts of Xylo-Mucines and calcium hydroxide; The granularity of described silicon-dioxide and pearlstone is 200 orders.
Xylo-Mucine is mixed with to 1% sodium carboxymethyl cellulose solution, adds water glass, potassium silicate, magnesium oxide and calcium hydroxide, fully stir, obtain gel material; Silicon-dioxide, pearlstone, aggregate chips, terra alba and polypropylene fibre are proportionally placed in to mixing machine to be uniformly mixed, then being placed in ball mill wet ball grinding pulverizes again, the slurry obtaining is left standstill after pumping upper strata moisture and fully mixed with gel material, be placed in dryer, under 80 DEG C of conditions, dry and obtain inorganic heat insulation material.Wherein, when ball milling, the weight ratio of material, water and ball is 1: 4: 6, and drying time is 8h.
Comparative example 2 is different from embodiment 2 while being ball milling, the weight ratio of material, water and ball.
Comparative example 3
In the present embodiment, a kind of silica containing inorganic heat insulation material, by weight percentage, comprise 8 parts, 50 parts of silicon-dioxide, 16 parts of pearlstones, 12 parts, magnesium oxide, 18 parts of water glass, 18 parts of potassium silicates, 7 parts of aggregate chips, 5 parts of terra albas, 3 parts of polypropylene fibres, 5 parts of Xylo-Mucines and calcium hydroxide; The granularity of described silicon-dioxide and pearlstone is 200 orders.
By Xylo-Mucine, water glass, potassium silicate, magnesium oxide, calcium hydroxide, silicon-dioxide, pearlstone, aggregate chips, terra alba and polypropylene fibre be proportionally placed in to mixing machine be uniformly mixed, then being placed in ball mill wet ball grinding pulverizes again, the slurry obtaining is left standstill after pumping upper strata moisture and fully mixed with gel material, be placed in dryer, under 80 DEG C of conditions, dry and obtain inorganic heat insulation material.Wherein, when ball milling, the weight ratio of material, water and ball is 1: 3: 5, and drying time is 8h.
Comparative example 3 is pulverized after directly mixing from different being of embodiment 3.
The performance of the lagging material that each embodiment and comparative example obtain sees the following form:
? |
Thermal conductivity |
Burning grade |
Maximum operation (service) temperature |
Ultimate compression strength |
Water-intake rate |
Embodiment 1 |
0.01w/(m.k) |
A level |
1000℃ |
1.0MPa |
0.08% |
Embodiment 2 |
0.05w/(m.k) |
A level |
1000℃ |
1.0MPa |
0.1% |
Embodiment 3 |
0.08w/(m.k) |
A level |
1000℃ |
0.8MPa |
0.09% |
Comparative example 1 |
0.15w/(m.k) |
B level |
800℃ |
0.5MPa |
0.12% |
Comparative example 2 |
0.15w/(m.k) |
B level |
800℃ |
0.3MPa |
0.09% |
Comparative example 3 |
0.15w/(m.k) |
B level |
800℃ |
0.8MPa |
0.15% |
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.