CN104446335A - Nanometer composite non-asbestos heat insulation felt and production method thereof - Google Patents
Nanometer composite non-asbestos heat insulation felt and production method thereof Download PDFInfo
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Abstract
The invention provides a nanometer composite non-asbestos heat insulation felt which is an elastic composite material enriched in a nanoscale closed porous meshed structure. The nanometer composite non-asbestos heat insulation felt comprises the following components in percentage by weight: 6-8.5wt% of nanometer silicon, 34-42wt% of brucite, 18-34wt% of sepiolite, 12-27wt% of aluminum silicate, 6-8wt% of inorganic active soil, 1.6-2wt% of debonding agent, 0.7-0.9wt% of modified dispersing agent, 0.01-0.02wt% of complexing agent and the balance of water. According to the nanometer composite non-asbestos heat insulation felt, the content of soluble chloride ions is less than or equal to 100mg/kg, and the sum of the content of soluble silicate and sodium ions is more than 10000mg/kg. The product is good in thermal insulation properties, high in service temperature and high in rebound rate, and an asbestos component does not exist in the product.
Description
Technical field
The present invention relates to a kind of nano combined without asbestos felt insulation and production method thereof.
Background technology
For the development of China's lagging material, experienced by from mechanically resistant material to soft material, then have soft material to poromerics.The insulation market in the whole nation more than 90% is now occupied by the large product of pure aluminium silicate, silicate and glass wool three.Pure aluminium silicate and glass wool have heatproof, advantage that moisture resistance properties is good, but its fiber stimulates human body, contaminate environment, particularly endanger workmen's healthy problem during installation and maintenance, do not solve so far.Silicate product solves these problems well, obtains the accreditation of domestic nuclear industry and shipbuilding, also ensures market demand at that time.2009 when International Maritime Organizaton (IMO) with the form of resolving by being just used as further revision containing asbestos products making aboard ship, require from 1 day January in 2011, for all boats and ships, should forbid that new clothes contain the material of asbestos, China Classification Society (CCS) also promulgates No. 30 circular, require shipowner, shipyard and marine product manufactory perform above-mentioned pact, the requirement of circular, whether third party's airworthiness compliance is carried out containing asbestos component in marine product, forbid that new clothes contain the requirement of asbestos material to meet boats and ships in the SOLAS pact revised through MSC.282 (86), owing to containing chrysotile in silicate product, this product has also exited the insulation of equipment field to shipbuilding comprehensively in 2011.
The particularly nuclear power plant high temperature service of China and heat distribution pipeline lagging material, entrust from early eighties country machinery in last century and just hereafter require to improve or development, late nineteen nineties has developed nuclear grade composite silicate material and has filled up this blank headed by Chinese Nuclear Power Design Academy.Owing to containing chrysotile in nuclear grade composite silicate material, China's shipbuilding and naval vessel device appoint the lagging material so can not electing high temperature service and heat distribution pipeline as.In recent years, China's Nuclear Electricity was flourish, and the demand of lagging material is also increasing, also more and more difficult to the selection of lagging material, selected pure aluminium silicate and glass wool, and large to environmental influence, particularly site operation personnel are unwilling; Select silicate, the report of asbestos-free related detection can not proposed again by manufacturer.Therefore, China's nuclear power plant equipment and shipbuilding need the lagging material that a kind of good heat insulating, use temperature are high, rebound degree good, austenitic stainless steel do not produced to burn into radioprotective, do not contain asbestos component.
Summary of the invention
the problem that invention will solve
The object of the invention is to provide one without Determination of Asbestos, good heat insulating, use temperature is high, rebound degree good, do not produce the resistance to irradiation of burn into metal (such as austenitic stainless steel) e-quipment and pipe, is specially adapted to the nano level heat insulating felt of nuclear reactor power plant shipbuilding high temperature service and heat distribution pipeline.The object of the invention is also to provide one without Determination of Asbestos, good heat insulating, use temperature is high, rebound degree good, do not produce corrosion to austenitic steel equipment and pipeline, resistance to irradiation, is particularly suitable for the production method of the nano level heat insulating felt of nuclear reactor power plant and shipbuilding high temperature service and heat distribution pipeline.
for the scheme of dealing with problems
A kind of nano combined without asbestos felt insulation, it is for being rich in the cancellated elastic composite of nano level closed porosity, be grouped into by the one-tenth of following weight percents: nano-silicon 6 ~ 8.5wt%, brucite 34 ~ 42wt%, sepiolite 18 ~ 34wt%, pure aluminium silicate 12 ~ 27wt%, inorganic active soil 6 ~ 8wt%, debonding agent 1.6 ~ 2wt%, modifiers dispersants 0.7 ~ 0.9wt%, complexing agent 0.01 ~ 0.02wt%, surplus is water; Wherein, described nano combined without asbestos felt insulation, its soluble chlorine ion content≤100 mg/kg, soluble silicon acid group and sodium ions content sum >=10000 mg/kg.Preferably, described debonding agent is made up of succsinic acid dibutyl ester sodium sulfonate, Sodium hexametaphosphate 99.
A kind of nano combined production method without asbestos felt insulation, comprise the following steps: slurrying: aluminosilicate fiber cotton, debonding agent and water are stirred, then add brucite fiber, sepiolite cashmere, inorganic active soil and debonding agent to continue to stir, then add modifiers dispersants to continue to stir, finally add nano-silicon and complexing agent, make slurry; Saw lumber: by described slurry 50 ~ 95 DEG C of bakings, dehydration forming.
Preferably, further comprising the steps of before pulping stage: brucite fiber process: brucite fiber to be dipped in water and to clean, until chloride ion content is less than 95 mg/kg in water, take out brucite fiber for subsequent use.
Preferably, the nano combined production method without asbestos felt insulation, order number>=15000 of described nano-silicon, density≤25Kg/m
3the impurity < 1% of described brucite fiber, maximum operation (service) temperature>=1200 of described aluminosilicate fiber cotton DEG C and impurity < 1%, the sepiolite content > 95% of described sepiolite cashmere and impurity < 1%, the colloid index of described inorganic active soil is 90 ~ 100, pH value is 9 ~ 10, and described water is the industrial pure water that at 25 DEG C, specific conductivity is less than 10 μ S/cm.
Preferably, the nano combined production method without asbestos felt insulation, described pulping stage is specially: aluminosilicate fiber cotton, succsinic acid dibutyl ester sodium sulfonate and industrial pure water are stirred 3 ~ 6 minutes in agitated pool, then add the brucite fiber after process, Sodium hexametaphosphate 99, sepiolite cashmere and inorganic active soil to stir 30 ~ 40 minutes, then add modifiers dispersants to stir 10 ~ 20 minutes, finally add nano-silicon and complexing agent.
Preferably, the nano combined production method without asbestos felt insulation, described pulping stage is specially: aluminosilicate fiber cotton, succsinic acid dibutyl ester sodium sulfonate and industrial pure water are stirred 5 minutes in agitated pool, then add the brucite fiber after process, Sodium hexametaphosphate 99, sepiolite cashmere and inorganic active soil to stir 35 minutes, then add modifiers dispersants and stir 15 minutes, finally add nano-silicon and complexing agent.
Preferably, the nano combined production method without asbestos felt insulation, described saw lumber step is specially: built by slurry in a mold, within 8 ~ 10 hours, then toasts 8 ~ 10 hours at 70 ~ 85 DEG C 50 ~ 70 DEG C of bakings, finally 85 ~ 95 DEG C of bakings 8 ~ 10 hours.
Preferably, the nano combined production method without asbestos felt insulation, in pulping stage, be 100% calculating with slurry weight, obtained slurry is grouped into by the one-tenth of following weight percents: nano-silicon 5 ~ 10wt%, brucite fiber 38 ~ 55wt%, sepiolite cashmere 20 ~ 35wt%, aluminosilicate fiber cotton 12 ~ 17wt%, inorganic active soil 3 ~ 7wt%, debonding agent 0.7 ~ 1.2wt%, modifiers dispersants 0.8 ~ 1.0wt%, complexing agent 0.07 ~ 0.12wt%, and surplus is water; Wherein, soluble chlorine ion content≤100 mg/kg in described slurry, soluble silicon acid group and sodium ions content sum >=10000 mg/kg;
Be 100% calculating with slurry weight, obtained slurry is preferably grouped into by the one-tenth of following weight percents: nano-silicon 5 ~ 9wt%, brucite fiber 46 ~ 55wt%, sepiolite cashmere 20 ~ 25wt%, aluminosilicate fiber cotton 12 ~ 15wt%, inorganic active soil 4 ~ 7wt%, debonding agent 1.0 ~ 1.2wt%, modifiers dispersants 0.8 ~ 1.0wt%, complexing agent 0.10 ~ 0.12wt%, and surplus is water; Wherein, soluble chlorine ion content≤100 mg/kg in described slurry, soluble silicon acid group and sodium ions content sum >=10000 mg/kg;
Be 100% calculating with slurry weight, obtained slurry is preferably grouped into by the one-tenth of following weight percents: nano-silicon 7 ~ 10wt%, brucite fiber 38 ~ 45wt%, sepiolite cashmere 30 ~ 35wt%, aluminum silicate fiber 13 ~ 17wt%, inorganic active soil 3 ~ 6wt%, debonding agent 0.7 ~ 1.1wt%, modifiers dispersants 0.8 ~ 1.0wt%, complexing agent 0.07 ~ 0.08wt%, and surplus is water; Wherein, soluble chlorine ion content≤100 mg/kg in described slurry, soluble silicon acid group and sodium ion sum >=10000 mg/kg.
It is nano combined without asbestos felt insulation that the present invention produced according to the invention described above method relates to, be a kind of without Determination of Asbestos, good heat insulating, use temperature are high, rebound degree good, chloride ion content is low, be specially adapted to the soft felted heat preserving and insulating material of the nano level of nuclear reactor power plant and shipbuilding high temperature service and heat distribution pipeline white.
the effect of invention
The nano combined over-all properties without asbestos felt insulation that the present invention relates to, is better than the lagging material of other kinds on the market.Of the present invention nano combined without asbestos felt insulation, normal temperature thermal conductivity low (0.031w/mK), use temperature, up to 800 DEG C, thus has excellent thermal and insulating performance.Particularly wherein without Determination of Asbestos and chloride ion content low (being less than 100mg/kg), corrosion can not be produced to austenitic stainless steel, be applicable to take austenitic stainless steel as the nuclear reactor power plant shipbuilding high temperature service of agent structure material and the heat preserving and insulating material of heat distribution pipeline thereof.Nano combined without asbestos felt insulation, because unit weight is little, without the need to any mechanical means and suspension device in construction.This product can also be reused.Therefore, be of the present inventionly nano combinedly particularly suitable for some without asbestos felt insulation and need the high temperature service of routine preventive maintenance and maintenance and the heat insulating of heat distribution pipeline.
Embodiment
Various exemplary embodiment of the present invention, characteristic sum aspect is described in detail below with reference to embodiment.In order to better the present invention is described, in embodiment hereafter, give numerous details.It will be appreciated by those skilled in the art that do not have these details, the present invention can implement equally.In other example, known method, means, material are not described in detail, so that highlight purport of the present invention.
Provided by the invention nano combined without asbestos felt insulation, it is for being rich in the cancellated elastic composite of nano level closed porosity, be grouped into by the one-tenth of following weight percents: nano-silicon 6 ~ 8.5wt%, brucite 34 ~ 42wt%, sepiolite 18 ~ 34wt%, pure aluminium silicate 12 ~ 27wt%, inorganic active soil 6 ~ 8wt%, debonding agent 1.6 ~ 2wt%, modifiers dispersants 0.7 ~ 0.9wt%, complexing agent 0.01 ~ 0.02wt%, surplus is water; Wherein, described nano combined without asbestos felt insulation, its soluble chlorine ion content≤100 mg/kg, soluble silicon acid group and sodium ions content sum >=10000 mg/kg.
The nano combined production method without asbestos felt insulation, comprise the following steps: slurrying: aluminosilicate fiber cotton, debonding agent and water are stirred, then add brucite fiber, sepiolite cashmere, inorganic active soil and debonding agent to continue to stir, then add modifiers dispersants to continue to stir, finally add nano-silicon and complexing agent, make slurry; Saw lumber: by described slurry 50 ~ 95 DEG C of bakings, dehydration forming.
Preferably, the nano combined production method without asbestos felt insulation, further comprising the steps of before pulping stage: brucite fiber process: brucite fiber to be dipped in water and to clean, until chloride ion content is less than 95 mg/kg in water, take out brucite fiber for subsequent use.
In one embodiment, nano-silicon choosing surface is through modifying, and order number is greater than more than 15000, density≤25Kg/m
3.
Brucite fiber (below sometimes brief note make brucite) optimum fiber is long and loosen, and dust and granule foreign are less than 1%.Such as quality grade is parity with or superiority over level Four product (the level Four product that such as South Africa, Shan Metal mining company produces).
Sepiolite cashmere (below sometimes brief note make sepiolite), the product (select quality that such as Neixiang County, Henan Province county east wind sepiolite factory produces) that preferred sepiolite content is greater than 95%, dust impurities is less than 1%.
Aluminosilicate fiber cotton (below sometimes brief note make pure aluminium silicate), preferred maximum operation (service) temperature is not less than 1200 DEG C, the granule foreign product (the special quality product that such as Luyang, Shandong group produces) that is less than 1%.
Inorganic active soil preferred gums valency 90 ~ 100, meta-alkalescence (pH value is 9 ~ 10), lily inorganic soil.
Quick debonding agent (succsinic acid dibutyl ester sodium sulfonate, Sodium hexametaphosphate 99), preferably uses wherein solid content to be not less than the tasteless product of 48%..
Modifiers dispersants, solid content is more than 30%, and modest viscosity, such as, viscosity is about 60S.Modifiers dispersants, can adopt the polyvinyl acetate emulsion that Chongqing Jiangbei workers and peasants chemical industry limited liability company produces, and preferably uses the polyvinyl acetate emulsion (G--1) that Chongqing Jiangbei workers and peasants chemical industry limited liability company produces.This polyvinyl acetate emulsion is a kind of colloidal liquid synthesized on the basis that VAE emulsion carries out modification, and solid content is more than 45%, and viscosity is about 60S.
Industrial pure water preferably at 25 DEG C specific conductivity be less than the industrial pure water of 10us/cm.
In one embodiment, the nano combined production method without asbestos felt insulation, the brucite fiber of aequum is placed in raw material disposal device, add appropriate industrial pure water first to soak, then clean and discharge rinse water, cleaning and drain operation repeat to chloride ion content in rinse water is less than 95 mg/kg.
Aluminosilicate fiber cotton, debonding agent succsinic acid dibutyl ester sodium sulfonate and industrial pure water are added in agitated pool and stirs; Again treated water magnesite fiber and modifiers dispersants, sepiolite cashmere and debonding agent (Sodium hexametaphosphate 99) are added agitated pool to continue to stir; Finally add nano-silicon and complexing agent, make it fully disperse and mix.
In one embodiment, the nano combined production method without asbestos felt insulation, in pulping stage, aluminosilicate fiber cotton, debonding agent (succsinic acid dibutyl ester sodium sulfonate) and industrial pure water are stirred 5 minutes in agitated pool, then add the brucite fiber after process, fast debonding agent Sodium hexametaphosphate 99, sepiolite cashmere and inorganic active soil and continue stirring 35 minutes, then add modifiers dispersants and stir 15 minutes again, finally add nano-silicon and complexing agent; Whole churning time is about 60 minutes altogether.Suitably should control stirring velocity in stirring, principle makes not interrupted by fiber because speed is too high, also can not fully not disperse because speed is too low.
In one embodiment, the nano combined production method without asbestos felt insulation, in saw lumber step, pours into a mould the slurry obtained in pulping stage in a mold, is placed in 50 ~ 95 DEG C, drying room inherence and toasts, form section bar after the moisture in slurry is evaporated gradually.A baking preferably point three phases is carried out: approximately carry out baking 8 ~ 10 hours at 50 ~ 70 DEG C of temperature, approximately carry out baking 8 ~ 10 hours at 70 ~ 85 DEG C of temperature, and approximately carry out baking 8 ~ 10 hours at 85 ~ 95 DEG C of temperature.Such moisture that can make evaporates gradually, can avoid causing because moisture sharply evaporates the structure forming section bar inside uneven, the heat-insulating property of material be reduced, affects the plasticity of section bar, do not cause baking time to drag yet long reduction productivity.
Below enumerate embodiment and further describe the present invention.
Embodiment 1
Brucite fiber (the level Four product that South Africa, Shan Metal mining company produces) 22 kilograms is placed in raw material disposal device, add appropriate industrial pure water (industrial pure water that chloride ion content is less than 5 mg/kg, specific conductivity (25 DEG C) is less than 10 μ S/cm), soak 20 ~ 30 minutes, then use industrial pure water clear, to drain rinse water, till in rinse water, chloride ion content is less than 95 mg/kg so repeatedly.
Aluminosilicate fiber cotton 10 kilograms, debonding agent (succsinic acid dibutyl ester sodium sulfonate) 3.8 kilograms and industrial pure water 540 kilograms are added in agitated pool; Start shooting after 5 minutes and will add agitated pool through above-mentioned steps treated water magnesite fiber 22 kilograms and modifiers dispersants 1.8 kilograms, 4 kilograms, inorganic active soil, sepiolite cashmere 16 kilograms and debonding agent (Sodium hexametaphosphate 99) 0.9 kilogram again; Continue stirring and after 35 minutes, add nano-silicon 4 kilograms and complexing agent 0.2 kilogram, continue to be stirred to total churning time and be no less than 60 minutes, make slurry.
The slurry made is transferred in mould, puts into a drying room point three phases and toast: approximately carry out 8 ~ 10 hours at 50 ~ 70 DEG C of temperature, at 70 ~ 85 DEG C of temperature, approximately carry out 8 ~ 10 hours, and approximately carry out 8 ~ 10 hours at 85 ~ 95 DEG C of temperature.Obtain the dry material formed, after pruning, obtain finished-product material--the super composite thermal insulation felt of nano-silicon.
In the material obtained, various Feedstock Component content (% by weight) is: nano-silicon 7, brucite fiber 37, aluminosilicate fiber cotton 17, sepiolite cashmere 26, inorganic active soil 6, fast debonding agent 2 (wherein succsinic acid dibutyl ester sodium sulfonate 1.6, hexa metaphosphoric acid, 0.4), modifiers dispersants 0.8 and excess water.This product detects through national correlation department, and its main performance index is shown among table 1.
Table 1: the main performance index of embodiment 1 product
| Project | Index |
| Outward appearance | The soft felt of white |
| Unit weight (kg/m 3) | 60 |
| Maximum operation (service) temperature (DEG C) | 800 |
| Thermal conductivity (W/m.k) | 0.034 |
| Compression rebound rate (%) | 91 |
| Solubility C1 -Content (mg/kg) | 97 |
Embodiment 2 ~ 10
Using the starting material as listed in following table 2 and consumption, adopting and carrying out similarly to Example 1 processing (wherein brucite fiber treatment process is identical with the treatment process of brucite fiber in embodiment 1), obtaining product 2 ~ 10.The complexing dosage used in each embodiment is 0.2 kilogram.
Table 2: the starting material quantity (unit: kilogram) used in embodiment 2 ~ 10
In product 2 ~ 10, each component concentration and performance index thereof are as shown in following table 3 and table 4.
Table 3: each component concentration (% by weight) table in the finished product of embodiment 2 ~ 10
Table 4: the performance index table of the product 2 ~ 10 of embodiment 2 ~ 10
The thermal and insulating performance of product of the present invention is far superior to common heat insulating felt, its salient features and common heat insulating felt salient features comparative data, as shown in table 5.
The Specifeca tion speeification table of table 5 nano-silicon heat insulating felt
Table 6 nano level composite thermal insulation felt and common performance of heat protective material comparison sheet
Although describe the present invention with reference to above embodiment, it should be understood that and the invention is not restricted to disclosed embodiment.The scope of appended claims should make an explanation in the most wide in range scope, to contain all modification, equivalent structure and function.
Claims (9)
1. nano combined without an asbestos felt insulation, it, for being rich in the cancellated elastic composite of nano level closed porosity, is characterized in that, be grouped into by the one-tenth of following weight percents:
Nano-silicon 6 ~ 8.5wt%, brucite 34 ~ 42wt%, sepiolite 18 ~ 34wt%, pure aluminium silicate 12 ~ 27wt%, inorganic active soil 6 ~ 8wt%, debonding agent 1.6 ~ 2wt%, modifiers dispersants 0.7 ~ 0.9wt%, complexing agent 0.01 ~ 0.02wt%, surplus is water;
Wherein, described nano combined without asbestos felt insulation, its soluble chlorine ion content≤100 mg/kg, soluble silicon acid group and sodium ions content sum >=10000 mg/kg.
2. nano combinedly according to claim 1 it is characterized in that without asbestos felt insulation, described debonding agent is by being succsinic acid dibutyl ester sodium sulfonate and/or Sodium hexametaphosphate 99.
3. the nano combined production method without asbestos felt insulation in claim 1 ~ 2 described in any one, is characterized in that, comprise the following steps:
Slurrying: aluminosilicate fiber cotton, debonding agent and water are stirred, then adds brucite fiber, sepiolite cashmere, inorganic active soil and debonding agent and continues to stir, then add modifiers dispersants and continue to stir, finally add nano-silicon and complexing agent, make slurry;
Saw lumber: by described slurry 50 ~ 95 DEG C of bakings, dehydration forming.
4. the nano combined production method without asbestos felt insulation according to claim 3, is characterized in that, further comprising the steps of before pulping stage:
Brucite fiber process: be dipped in water by brucite fiber and clean, until chloride ion content is less than 95 mg/kg in water, takes out brucite fiber for subsequent use.
5., according to the arbitrary described nano combined production method without asbestos felt insulation of claim 3 or 4, it is characterized in that, order number>=15000 of described nano-silicon, density≤25Kg/m
3the impurity < 1% of described brucite fiber, maximum operation (service) temperature>=1200 of described aluminosilicate fiber cotton DEG C and impurity < 1%, the sepiolite content > 95% of described sepiolite cashmere and impurity < 1%, the colloid index of described inorganic active soil is 90 ~ 100, pH value is 9 ~ 10, and described water is the industrial pure water that at 25 DEG C, specific conductivity is less than 10 μ S/cm.
6. the nano combined production method without asbestos felt insulation according to claim 5, it is characterized in that, described pulping stage is specially:
Aluminosilicate fiber cotton, succsinic acid dibutyl ester sodium sulfonate and industrial pure water are stirred 3 ~ 6 minutes in agitated pool, then add the brucite fiber after process, Sodium hexametaphosphate 99, sepiolite cashmere and inorganic active soil to stir 30 ~ 40 minutes, then add modifiers dispersants to stir 10 ~ 20 minutes, finally add nano-silicon and complexing agent.
7. the nano combined production method without asbestos felt insulation according to claim 5, it is characterized in that, described pulping stage is specially:
Aluminosilicate fiber cotton, succsinic acid dibutyl ester sodium sulfonate and industrial pure water are stirred 5 minutes in agitated pool, then add the brucite fiber after process, Sodium hexametaphosphate 99, sepiolite cashmere and inorganic active soil to stir 35 minutes, then add modifiers dispersants and stir 15 minutes, finally add nano-silicon and complexing agent.
8. the nano combined production method without asbestos felt insulation according to claim 5, is characterized in that, described saw lumber step is specially:
Slurry is built in a mold, 50 ~ 70 DEG C of bakings 8 ~ 10 hours, then 70 ~ 90 DEG C of bakings 8 ~ 10 hours, finally 90 ~ 110 DEG C of bakings 8 ~ 10 hours.
9., according to the arbitrary described nano combined production method without asbestos felt insulation of claim 3 or 4, it is characterized in that, in pulping stage, be 100% calculating with slurry weight, obtained slurry is grouped into by the one-tenth of following weight percents:
Nano-silicon 5 ~ 10wt%, brucite fiber 38 ~ 55wt%, sepiolite cashmere 20 ~ 35wt%, aluminosilicate fiber cotton 12 ~ 17wt%, inorganic active soil 3 ~ 7wt%, debonding agent 0.7 ~ 1.2wt%, modifiers dispersants 0.8 ~ 1.0wt%, complexing agent 0.07 ~ 0.12wt%, surplus is water; Wherein, soluble chlorine ion content≤100 mg/kg in described slurry, soluble silicon acid group and sodium ions content sum >=10000 mg/kg;
Be 100% calculating with slurry weight, obtained slurry is preferably grouped into by the one-tenth of following weight percents:
Nano-silicon 5 ~ 9wt%, brucite fiber 46 ~ 55wt%, sepiolite cashmere 20 ~ 25wt%, aluminosilicate fiber cotton 12 ~ 15wt%, inorganic active soil 4 ~ 7wt%, debonding agent 1.0 ~ 1.2wt%, modifiers dispersants 0.8 ~ 1.0wt%, complexing agent 0.10 ~ 0.12wt%, surplus is water; Wherein, soluble chlorine ion content≤100 mg/kg in described slurry, soluble silicon acid group and sodium ions content sum >=10000 mg/kg;
Be 100% calculating with slurry weight, obtained slurry is preferably grouped into by the one-tenth of following weight percents:
Nano-silicon 7 ~ 10wt%, brucite fiber 38 ~ 45wt%, sepiolite cashmere 30 ~ 35wt%, aluminum silicate fiber 13 ~ 17wt%, inorganic active soil 3 ~ 6wt%, debonding agent 0.7 ~ 1.1wt%, modifiers dispersants 0.8 ~ 1.0wt%, complexing agent 0.07 ~ 0.08wt%, surplus is water; Wherein, soluble chlorine ion content≤100 mg/kg in described slurry, soluble silicon acid group and sodium ion sum >=10000 mg/kg.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107216062A (en) * | 2016-04-15 | 2017-09-29 | 安徽金刚节能科技有限公司 | Environmental protection type asbestos less silicate composite fibrofelt and preparation technology |
| CN110645445A (en) * | 2019-09-20 | 2020-01-03 | 铁科创恒新材料科技有限公司 | Inorganic nano powder composite heat insulation felt and preparation method thereof |
| KR102326873B1 (en) * | 2021-06-09 | 2021-11-16 | 이휘범 | Porous ceramic insulation material using waste aluminum dross powder and method for manufacturing same |
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| KR102326873B1 (en) * | 2021-06-09 | 2021-11-16 | 이휘범 | Porous ceramic insulation material using waste aluminum dross powder and method for manufacturing same |
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Application publication date: 20150325 |