CN105384453A - Preparation method for high temperature-resistant heat-insulating composite material - Google Patents
Preparation method for high temperature-resistant heat-insulating composite material Download PDFInfo
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Abstract
The invention discloses a preparation method for a high temperature-resistant heat-insulating composite material, belonging to the field of high temperature-resistant materials. The invention provides the method for preparing the high temperature-resistant heat-insulating composite material through gel modification of expanded vermiculite. According to the method, nanocrystallization of micron-size pores of expanded vermiculite is realized through gel modification and stable micropores and structures are formed among layers of vermiculite, so vermiculite is endowed with better thermal stability; the modified expanded vermiculite improves refractoriness, heat insulation performance and mechanical properties of the composite material; and thus, the purposes of conservation of energy and reduction in product cost are achieved.
Description
Technical field
The invention discloses a kind of preparation method of high temperature insulation matrix material, belong to high temperature material field.
Background technology
The general name of the material that lagging material is lightweight, loose, porous, thermal conductivity are little.Due to its distinctive insulation, heat insulation, sound insulation and fire resistance, be widely used in national defence, aerospace, nuclear power exploitation and the industry such as chemical industry.Use lagging material can effectively reduce thermosteresis and fuel economy, can also work situation be improved simultaneously, ensure safety in production and improve work efficiency.Want the loss reducing heat, efficient lagging material need be adopted to carry out heat insulation, the heat-insulating efficiency of some material can reach more than 95%.The effect of heat insulation of lagging material is better, and the cost of insulation is lower, and Energy Efficiency Ratio is higher.Therefore lagging material industrial expansion, the utilization of the particularly exploitation of high-quality insulative material, to the stable and healthy development of the economic construction of China, has very important realistic meaning.
Vermiculite, due to swelling property good when its distinctive laminated structure and high-temperature calcination, makes expanded vermiculite not only itself have lower thermal conductivity and volume density, and the distinctive scale structure of its particle surface can also reflective thermal radiation.Expanded vermiculite can directly as thermofin in lagging material, and the stopping composition that also can be used as thermofin uses.Sometimes also by granular expanded vermiculite and the bonding agent such as water glass or cement, through vibration or compression moulding, make heat insulation sample after drying and use.But this product strength is low, yielding and fire performance is poor.Except the goods that minority volume density is larger, generally load larrying member can not be used for, and maximum operation (service) temperature is lower than 1100 DEG C.Vermiculite is as a kind of important nonmetal mineral resource, and there is the very abundant mineral deposit amount of accumulateing in our country, but is not also effectively applied to heat insulation field at present.It is mainly manifested in the following aspects: range of application is wide, and range of product is few, the simple feature of processing and treating method, the comprehensive utilization of different grade vermiculite, mill tailings utilize and coordinate with other nonmetalliferous ores utilize in also there is obvious gap.How to widen the range of application of vermiculite, exploitation high value added product aspect, domestic scientific and technical personnel still have much work to do.
Summary of the invention
The technical problem that the present invention mainly solves: the high temperature insulation product strength made for current expanded vermiculite is low, yielding and fire performance is poor, because expanded vermiculite has larger structure hole, be mainly micron order, this makes its high temperature insulating, the problem that fire performance is also undesirable, provide the method that the modified expanded vermiculite of a kind of gel obtains high temperature insulation matrix material, the present invention carries out nanometer by the micron order hole of method to expanded vermiculite preparing gel modification, stable micropore and structure is formed between vermiculite layers, give vermiculite better thermostability, modified expanded vermiculite is to the refractoriness of matrix material, heat-proof quality and mechanical property are all improved, thus reach save energy, reduce the object of product cost.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
(1) vermiculite of 400 ~ 500g is got, putting it into mass concentration by solid-to-liquid ratio 1:2 is in the nitric acid of 0.6 ~ 0.8mol/L, immersion 2 ~ 3h is carried out at 60 ~ 70 DEG C, taking-up is filtered after immersion, put into retort furnace again, calcining 20 ~ 30min is carried out at the temperature of 500 ~ 550 DEG C, afterwards vermiculite is cooled to room temperature to take out, again the ethanolic soln that vermiculite puts into massfraction 80% by solid-to-liquid ratio 1:3 is soaked 2 ~ 3h, solid is filtered to obtain after immersion, put it into dry 2 ~ 3h in the baking oven of 60 ~ 70 DEG C, put into sand mill after drying and carry out sand milling, with 350 ~ 400 object screen cloth screenings, obtain vermiculite powder,
(2) according to the mass fraction, choose 20 ~ 25 parts of Resorcinols respectively, 40 ~ 50 parts of formaldehyde, 10 ~ 15 parts of propylene oxide, 15 ~ 20 parts of water join in there-necked flask, put into the water-bath of 60 ~ 70 DEG C, dissolve completely to solid by magnetic stirrer, put into afterwards in glass test tube, leave standstill 20 ~ 24h at normal temperatures, can colloidal sol be obtained;
(3) get 100 ~ 120g step (1) to obtain vermiculite powder and join in above-mentioned colloidal sol by solid-to-liquid ratio 1.1, put it into after mixing in water-bath, 22 ~ 24h is incubated under 50 ~ 55 DEG C of bath temperatures, make the aging one-tenth gel of colloidal sol, afterwards bath temperature is heated up 90 ~ 95 DEG C, continue aging 2 ~ 3 days, obtain the expanded vermiculite of gel modification;
(4) expanded vermiculite of above-mentioned obtained gel modification is first pressed the alcohol solution dipping 10 ~ 20h of solid-to-liquid ratio 1:3 massfraction 85%, take out afterwards and at 55 ~ 60 DEG C, soak 30 ~ 36h with the ethanolic soln of the tetraethoxy of solid-to-liquid ratio 1:4 again, soak and filter, filter residue is cleaned 1 ~ 3 time with distilled water and acetone respectively, after cleaning, puts into the dry 20 ~ 22h of thermostat container of 65 ~ 70 DEG C;
(5) above-mentioned dried solid is put in charring furnace, first it is vacuumized, be filled with nitrogen wherein again, in a nitrogen atmosphere, 250 ~ 300 DEG C are warming up to the heat-up rate of 2 ~ 4 DEG C/min, be incubated 1 ~ 2h at this temperature, naturally cool to room temperature afterwards, from charring furnace, take out solid;
(6) above-mentioned obtained solid is added water glass bonding agent by solid-to-liquid ratio 6:1, after abundant mixing, fast compound is poured in stainless mould, put into hydropress, in the pressure compression moulding of 0.2 ~ 0.3Mpa, then the sample suppressed is put into the dry 3 ~ 5h of loft drier of 100 ~ 110 DEG C, high temperature insulation matrix material can be obtained.
Application method of the present invention: high temperature insulation matrix material the present invention obtained can be applied in pipeline, stove and other Thermal Equipment, be applied in building material industry, can as a kind of New Building Materials, traditional mineral wool can be substituted, make house not only heat insulation but also warming, use it for Highrise buildings, then can replace general cladding glass, greatly alleviate buildings deadweight, and can fireproofing function be played, high temperature insulation matrix material of the present invention substitutes traditional lagging material, heat-energy losses can be greatly reduced, improve heat utilization rate, the high temperature of this goods ability 2000 DEG C, thermal conductivity under normal temperature is 0.01 ~ 0.03W/mk, thermal conductivity at 800 DEG C is 0.04 ~ 0.05W/mk, density is 380 ~ 420kg/m
3.
The invention has the beneficial effects as follows:
(1) the present invention carries out nanometer by the micron order hole of method to expanded vermiculite preparing gel modification, forms stable micropore and structure between vermiculite layers, gives vermiculite better thermostability;
(2) expanded vermiculite that the present invention is modified is all improved the refractoriness of matrix material, heat-proof quality and mechanical property, thus reaches save energy, reduces the object of product cost.
Embodiment
First the vermiculite of 400 ~ 500g is got, putting it into mass concentration by solid-to-liquid ratio 1:2 is in the nitric acid of 0.6 ~ 0.8mol/L, immersion 2 ~ 3h is carried out at 60 ~ 70 DEG C, taking-up is filtered after immersion, put into retort furnace again, calcining 20 ~ 30min is carried out at the temperature of 500 ~ 550 DEG C, afterwards vermiculite is cooled to room temperature to take out, again the ethanolic soln that vermiculite puts into massfraction 80% by solid-to-liquid ratio 1:3 is soaked 2 ~ 3h, solid is filtered to obtain after immersion, put it into dry 2 ~ 3h in the baking oven of 60 ~ 70 DEG C, put into sand mill after drying and carry out sand milling, with 350 ~ 400 object screen cloth screenings, obtain vermiculite powder, according to the mass fraction, choose 20 ~ 25 parts of Resorcinols respectively, 40 ~ 50 parts of formaldehyde, 10 ~ 15 parts of propylene oxide, 15 ~ 20 parts of water join in there-necked flask, put into the water-bath of 60 ~ 70 DEG C, dissolve completely to solid by magnetic stirrer, put into afterwards in glass test tube, leave standstill 20 ~ 24h at normal temperatures, can colloidal sol be obtained, get 100 ~ 120g to obtain vermiculite powder and join in above-mentioned colloidal sol by solid-to-liquid ratio 1.1, put it into after mixing in water-bath, 22 ~ 24h is incubated under 50 ~ 55 DEG C of bath temperatures, make the aging one-tenth gel of colloidal sol, afterwards bath temperature is heated up 90 ~ 95 DEG C, continue aging 2 ~ 3 days, obtain the expanded vermiculite of gel modification, by the expanded vermiculite of obtained gel modification first by the alcohol solution dipping 10 ~ 20h of solid-to-liquid ratio 1:3 with massfraction 85%, take out afterwards and at 55 ~ 60 DEG C, soak 30 ~ 36h with the ethanolic soln of the tetraethoxy of solid-to-liquid ratio 1:4 again, soak and filter, filter residue is cleaned 1 ~ 3 time with distilled water and acetone respectively, after cleaning, puts into the dry 20 ~ 22h of thermostat container of 65 ~ 70 DEG C, dried solid is put in charring furnace, first it is vacuumized, then be filled with nitrogen wherein, in a nitrogen atmosphere, be warming up to 250 ~ 300 DEG C with the heat-up rate of 2 ~ 4 DEG C/min, be incubated 1 ~ 2h at this temperature, naturally cool to room temperature afterwards, from charring furnace, take out solid, obtained solid is added water glass bonding agent by solid-to-liquid ratio 6:1, after abundant mixing, fast compound is poured in stainless mould, put into hydropress, in the pressure compression moulding of 0.2 ~ 0.3Mpa, then the sample suppressed is put into the dry 3 ~ 5h of loft drier of 100 ~ 110 DEG C, high temperature insulation matrix material can be obtained.
Example 1
First the vermiculite of 400g is got, putting it into mass concentration by solid-to-liquid ratio 1:2 is in the nitric acid of 0.6mol/L, immersion 2h is carried out at 60 DEG C, taking-up is filtered after immersion, put into retort furnace again, calcining 20min is carried out at the temperature of 500 DEG C, afterwards vermiculite is cooled to room temperature to take out, again the ethanolic soln that vermiculite puts into massfraction 80% by solid-to-liquid ratio 1:3 is soaked 2h, filter to obtain solid after immersion, put it into dry 2h in the baking oven of 60 DEG C, put into sand mill after drying and carry out sand milling, with 350 object screen cloth screenings, obtain vermiculite powder; According to the mass fraction, choose 20 parts of Resorcinols respectively, 50 parts of formaldehyde, 10 parts of propylene oxide, 20 parts of water join in there-necked flask, put into the water-bath of 60 DEG C, dissolve completely to solid by magnetic stirrer, put into afterwards in glass test tube, leave standstill 20h at normal temperatures, can colloidal sol be obtained; Get 100g to obtain vermiculite powder and join in above-mentioned colloidal sol by solid-to-liquid ratio 1.1, put it into after mixing in water-bath, under 50 DEG C of bath temperatures, be incubated 22h, make the aging one-tenth gel of colloidal sol, bath temperature is heated up 90 DEG C afterwards, continue aging 2 days, obtain the expanded vermiculite of gel modification; By the expanded vermiculite of obtained gel modification first by the alcohol solution dipping 10h of solid-to-liquid ratio 1:3 with massfraction 85%, take out afterwards and at 55 DEG C, soak 30h with the ethanolic soln of the tetraethoxy of solid-to-liquid ratio 1:4 again, soak and filter, filter residue is cleaned 1 time with distilled water and acetone respectively, after cleaning, puts into the dry 20h of thermostat container of 65 DEG C; Dried solid is put in charring furnace, first it is vacuumized, then be filled with nitrogen wherein, in a nitrogen atmosphere, be warming up to 250 DEG C with the heat-up rate of 2 DEG C/min, be incubated 1h at this temperature, naturally cool to room temperature afterwards, from charring furnace, take out solid; Obtained solid is added water glass bonding agent by solid-to-liquid ratio 6:1, after abundant mixing, fast compound is poured in stainless mould, put into hydropress, in the pressure compression moulding of 0.2Mpa, then the sample suppressed is put into the dry 3h of loft drier of 100 DEG C, high temperature insulation matrix material can be obtained.
High temperature insulation matrix material the present invention obtained can be applied in pipeline, stove and other Thermal Equipment, be applied in building material industry, can as a kind of New Building Materials, traditional mineral wool can be substituted, make house not only heat insulation but also warming, use it for Highrise buildings, then can replace general cladding glass, greatly alleviate buildings deadweight, and can fireproofing function be played, high temperature insulation matrix material of the present invention substitutes traditional lagging material, heat-energy losses can be greatly reduced, improve heat utilization rate, the high temperature of this goods ability 2000 DEG C, thermal conductivity under normal temperature is 0.01W/mk, thermal conductivity at 800 DEG C is 0.04W/mk, density is 380kg/m
3.
Example 2
First the vermiculite of 450g is got, putting it into mass concentration by solid-to-liquid ratio 1:2 is in the nitric acid of 0.7mol/L, immersion 2.5h is carried out at 65 DEG C, taking-up is filtered after immersion, put into retort furnace again, calcining 25min is carried out at the temperature of 525 DEG C, afterwards vermiculite is cooled to room temperature to take out, again the ethanolic soln that vermiculite puts into massfraction 80% by solid-to-liquid ratio 1:3 is soaked 2.5h, filter to obtain solid after immersion, put it into dry 2.5h in the baking oven of 65 DEG C, put into sand mill after drying and carry out sand milling, with 375 object screen cloth screenings, obtain vermiculite powder; According to the mass fraction, choose 23 parts of Resorcinols respectively, 47 parts of formaldehyde, 15 parts of propylene oxide, 15 parts of water join in there-necked flask, put into the water-bath of 65 DEG C, dissolve completely to solid by magnetic stirrer, put into afterwards in glass test tube, leave standstill 22h at normal temperatures, can colloidal sol be obtained; Get 110g to obtain vermiculite powder and join in above-mentioned colloidal sol by solid-to-liquid ratio 1.1, put it into after mixing in water-bath, under 53 DEG C of bath temperatures, be incubated 23h, make the aging one-tenth gel of colloidal sol, bath temperature is heated up 93 DEG C afterwards, continue aging 2.5 days, obtain the expanded vermiculite of gel modification; By the expanded vermiculite of obtained gel modification first by the alcohol solution dipping 15h of solid-to-liquid ratio 1:3 with massfraction 85%, take out afterwards and at 57 DEG C, soak 33h with the ethanolic soln of the tetraethoxy of solid-to-liquid ratio 1:4 again, soak and filter, filter residue is cleaned 2 times with distilled water and acetone respectively, after cleaning, puts into the dry 21h of thermostat container of 67 DEG C; Dried solid is put in charring furnace, first it is vacuumized, then be filled with nitrogen wherein, in a nitrogen atmosphere, be warming up to 275 DEG C with the heat-up rate of 3 DEG C/min, be incubated 1.5h at this temperature, naturally cool to room temperature afterwards, from charring furnace, take out solid; Obtained solid is added water glass bonding agent by solid-to-liquid ratio 6:1, after abundant mixing, fast compound is poured in stainless mould, put into hydropress, in the pressure compression moulding of 0.25Mpa, then the sample suppressed is put into the dry 4h of loft drier of 105 DEG C, high temperature insulation matrix material can be obtained.
High temperature insulation matrix material the present invention obtained can be applied in pipeline, stove and other Thermal Equipment, be applied in building material industry, can as a kind of New Building Materials, traditional mineral wool can be substituted, make house not only heat insulation but also warming, use it for Highrise buildings, then can replace general cladding glass, greatly alleviate buildings deadweight, and can fireproofing function be played, high temperature insulation matrix material of the present invention substitutes traditional lagging material, heat-energy losses can be greatly reduced, improve heat utilization rate, the high temperature of this goods ability 2000 DEG C, thermal conductivity under normal temperature is 0.02W/mk, thermal conductivity at 800 DEG C is 0.045W/mk, density is 400kg/m
3.
Example 3
First the vermiculite of 500g is got, putting it into mass concentration by solid-to-liquid ratio 1:2 is in the nitric acid of 0.8mol/L, immersion 3h is carried out at 70 DEG C, taking-up is filtered after immersion, put into retort furnace again, calcining 30min is carried out at the temperature of 550 DEG C, afterwards vermiculite is cooled to room temperature to take out, again the ethanolic soln that vermiculite puts into massfraction 80% by solid-to-liquid ratio 1:3 is soaked 3h, filter to obtain solid after immersion, put it into dry 3h in the baking oven of 70 DEG C, put into sand mill after drying and carry out sand milling, with 400 object screen cloth screenings, obtain vermiculite powder; According to the mass fraction, choose 25 parts of Resorcinols respectively, 40 parts of formaldehyde, 15 parts of propylene oxide, 20 parts of water join in there-necked flask, put into the water-bath of 70 DEG C, dissolve completely to solid by magnetic stirrer, put into afterwards in glass test tube, leave standstill 24h at normal temperatures, can colloidal sol be obtained; Get 120g to obtain vermiculite powder and join in above-mentioned colloidal sol by solid-to-liquid ratio 1.1, put it into after mixing in water-bath, under 55 DEG C of bath temperatures, be incubated 24h, make the aging one-tenth gel of colloidal sol, bath temperature is heated up 95 DEG C afterwards, continue aging 3 days, obtain the expanded vermiculite of gel modification; By the expanded vermiculite of obtained gel modification first by the alcohol solution dipping 20h of solid-to-liquid ratio 1:3 with massfraction 85%, take out afterwards and at 60 DEG C, soak 36h with the ethanolic soln of the tetraethoxy of solid-to-liquid ratio 1:4 again, soak and filter, filter residue is cleaned 3 times with distilled water and acetone respectively, after cleaning, puts into the dry 22h of thermostat container of 70 DEG C; Dried solid is put in charring furnace, first it is vacuumized, then be filled with nitrogen wherein, in a nitrogen atmosphere, be warming up to 300 DEG C with the heat-up rate of 4 DEG C/min, be incubated 2h at this temperature, naturally cool to room temperature afterwards, from charring furnace, take out solid; Obtained solid is added water glass bonding agent by solid-to-liquid ratio 6:1, after abundant mixing, fast compound is poured in stainless mould, put into hydropress, in the pressure compression moulding of 0.3Mpa, then the sample suppressed is put into the dry 5h of loft drier of 110 DEG C, high temperature insulation matrix material can be obtained.
High temperature insulation matrix material the present invention obtained can be applied in pipeline, stove and other Thermal Equipment, be applied in building material industry, can as a kind of New Building Materials, traditional mineral wool can be substituted, make house not only heat insulation but also warming, use it for Highrise buildings, then can replace general cladding glass, greatly alleviate buildings deadweight, and can fireproofing function be played, high temperature insulation matrix material of the present invention substitutes traditional lagging material, heat-energy losses can be greatly reduced, improve heat utilization rate, the high temperature of this goods ability 2000 DEG C, thermal conductivity under normal temperature is 0.03W/mk, thermal conductivity at 800 DEG C is 0.05W/mk, density is 420kg/m
3.
Claims (1)
1. a preparation method for high temperature insulation matrix material, is characterized in that concrete steps are:
(1) vermiculite of 400 ~ 500g is got, putting it into mass concentration by solid-to-liquid ratio 1:2 is in the nitric acid of 0.6 ~ 0.8mol/L, immersion 2 ~ 3h is carried out at 60 ~ 70 DEG C, taking-up is filtered after immersion, put into retort furnace again, calcining 20 ~ 30min is carried out at the temperature of 500 ~ 550 DEG C, afterwards vermiculite is cooled to room temperature to take out, again the ethanolic soln that vermiculite puts into massfraction 80% by solid-to-liquid ratio 1:3 is soaked 2 ~ 3h, solid is filtered to obtain after immersion, put it into dry 2 ~ 3h in the baking oven of 60 ~ 70 DEG C, put into sand mill after drying and carry out sand milling, with 350 ~ 400 object screen cloth screenings, obtain vermiculite powder,
(2) according to the mass fraction, choose 20 ~ 25 parts of Resorcinols respectively, 40 ~ 50 parts of formaldehyde, 10 ~ 15 parts of propylene oxide, 15 ~ 20 parts of water join in there-necked flask, put into the water-bath of 60 ~ 70 DEG C, dissolve completely to solid by magnetic stirrer, put into afterwards in glass test tube, leave standstill 20 ~ 24h at normal temperatures, can colloidal sol be obtained;
(3) get 100 ~ 120g step (1) to obtain vermiculite powder and join in above-mentioned colloidal sol by solid-to-liquid ratio 1.1, put it into after mixing in water-bath, 22 ~ 24h is incubated under 50 ~ 55 DEG C of bath temperatures, make the aging one-tenth gel of colloidal sol, afterwards bath temperature is heated up 90 ~ 95 DEG C, continue aging 2 ~ 3 days, obtain the expanded vermiculite of gel modification;
(4) expanded vermiculite of above-mentioned obtained gel modification is first pressed the alcohol solution dipping 10 ~ 20h of solid-to-liquid ratio 1:3 massfraction 85%, take out afterwards and at 55 ~ 60 DEG C, soak 30 ~ 36h with the ethanolic soln of the tetraethoxy of solid-to-liquid ratio 1:4 again, soak and filter, filter residue is cleaned 1 ~ 3 time with distilled water and acetone respectively, after cleaning, puts into the dry 20 ~ 22h of thermostat container of 65 ~ 70 DEG C;
(5) above-mentioned dried solid is put in charring furnace, first it is vacuumized, be filled with nitrogen wherein again, in a nitrogen atmosphere, 250 ~ 300 DEG C are warming up to the heat-up rate of 2 ~ 4 DEG C/min, be incubated 1 ~ 2h at this temperature, naturally cool to room temperature afterwards, from charring furnace, take out solid;
(6) above-mentioned obtained solid is added water glass bonding agent by solid-to-liquid ratio 6:1, after abundant mixing, fast compound is poured in stainless mould, put into hydropress, in the pressure compression moulding of 0.2 ~ 0.3Mpa, then the sample suppressed is put into the dry 3 ~ 5h of loft drier of 100 ~ 110 DEG C, high temperature insulation matrix material can be obtained.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106366860A (en) * | 2016-09-03 | 2017-02-01 | 奥龙汽车有限公司 | Novel nano ceramic thermal insulation material |
| CN111848106A (en) * | 2020-07-30 | 2020-10-30 | 福建省中能泰丰节能环保科技有限公司 | High-temperature-resistant heat-insulating material and preparation method thereof |
| CN115650632A (en) * | 2022-10-26 | 2023-01-31 | 河北慈宏新材料科技有限公司 | High-temperature-resistant vermiculite-based composite sealing gasket and preparation method thereof |
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| CN102503202A (en) * | 2011-11-03 | 2012-06-20 | 武汉科技大学 | Al2O3 intercalated expanded vermiculite heat-insulating material and preparation method thereof |
| CN102503482A (en) * | 2011-11-03 | 2012-06-20 | 武汉科技大学 | Low-thermal conductivity modified vermiculite composite thermal insulation material and preparation method thereof |
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| CN102503202A (en) * | 2011-11-03 | 2012-06-20 | 武汉科技大学 | Al2O3 intercalated expanded vermiculite heat-insulating material and preparation method thereof |
| CN102503482A (en) * | 2011-11-03 | 2012-06-20 | 武汉科技大学 | Low-thermal conductivity modified vermiculite composite thermal insulation material and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106366860A (en) * | 2016-09-03 | 2017-02-01 | 奥龙汽车有限公司 | Novel nano ceramic thermal insulation material |
| CN106366860B (en) * | 2016-09-03 | 2018-11-06 | 奥龙汽车有限公司 | A kind of nano ceramics heat-insulating heat-preserving material |
| CN111848106A (en) * | 2020-07-30 | 2020-10-30 | 福建省中能泰丰节能环保科技有限公司 | High-temperature-resistant heat-insulating material and preparation method thereof |
| CN111848106B (en) * | 2020-07-30 | 2022-01-25 | 福建省中能泰丰节能环保科技有限公司 | High-temperature-resistant heat-insulating material and preparation method thereof |
| CN115650632A (en) * | 2022-10-26 | 2023-01-31 | 河北慈宏新材料科技有限公司 | High-temperature-resistant vermiculite-based composite sealing gasket and preparation method thereof |
| CN115650632B (en) * | 2022-10-26 | 2023-10-31 | 河北慈宏新材料科技有限公司 | High-resistance Wen Zhidan-based composite sealing gasket and preparation method thereof |
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| CN105384453B (en) | 2017-06-30 |
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