CN101891441A - Production process for hydrophobic expansion pearlite thermal insulation product - Google Patents
Production process for hydrophobic expansion pearlite thermal insulation product Download PDFInfo
- Publication number
- CN101891441A CN101891441A CN 200910098861 CN200910098861A CN101891441A CN 101891441 A CN101891441 A CN 101891441A CN 200910098861 CN200910098861 CN 200910098861 CN 200910098861 A CN200910098861 A CN 200910098861A CN 101891441 A CN101891441 A CN 101891441A
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- production technique
- thermal insulation
- product
- water
- calcium silicate
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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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
- C04B2111/26—Corrosion of reinforcement resistance
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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
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- 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
Abstract
The invention relates to a production process for a hydrophobic expansion pearlite thermal insulation product. Expansion pearlite, microporous calcium silicate granules, short-wave fibers, a binder, a water repellent and water are taken as raw materials, mixed according to weight percentage, and stirred, molded and dried to prepare the product at one time. The product has the characteristics of light weight, thermal insulation, water resistance, incombustibility, high extrusion prevention, good corrosion resistance, safety for people and livestock, and the like.
Description
One, technical field
The present invention relates to a kind of production technique of hydrophobic expansion pearlite thermal insulation product.
Two, background technology
Common expansion pearlite thermal insulation product mainly contains cement expanded perlite goods, water glass expanded perlite product, phosphoric acid salt expanded perlite product etc. at present, the maximum characteristics of these goods all are to adopt the inorganic glue matrix material, make that the goods thermal conductivity is higher, ultimate compression strength is also not ideal enough.At present, make the production hydrophobic expansion pearlite thermal insulation product 3 kinds of methods generally arranged:
(1) dip coating: the normal expanded perlite product surface spraying one deck hydrophober with preparing forms one deck hydrophobic film on the surface.Though this technology is simple, goods in construction then will be lost hydrophobic nature if break the surface.
(2) osmose process:, make goods inside have certain hydrophobic nature with carrying out osmotic treated in the normal expanded perlite goods immersion hydrophober for preparing.But this arts demand redrying, calcining, complex process, product surface is easy to damage, and production cost is higher, and easily causes and soak not saturating phenomenon, makes goods lose inside and outside full hydrophobicity performance.
(3) mixing method: various starting material are mixed and stirred in a certain order, once finish through moulding, drying, sintering again.This technology is simple relatively, because of the starting material particle surface all is wrapped to form hydrophobic film by hydrophober, also has good hydrophobic nature at section, so mixing method is a kind of full hydrophobic goods technology.The gordian technique of mixing method technology is to develop the formulation of suitable prescription and processing parameter.The development prescription must guarantee that product has excellent performance, selects most economical composition of raw materials and technical process simultaneously.
In addition, the production of hydrophobic expansion pearlite thermal insulation product at present, feeding manner adopts hand feed more.This feeding manner exists the big and actual inlet amount of labour intensity to be difficult to the accurately defective of control.That is to say,,, also can't produce the product of stable performance if in actual production, can not accurately control ratio of components even develop the optimised process prescription.
Three, summary of the invention
The defective higher at above-mentioned expansion pearlite thermal insulation product thermal conductivity, that ultimate compression strength is on the low side, the present invention adopts mixing method technology, adding broken size range in each raw material again is the microporous calcium silicate particle of 0.4～2mm, once finishes through stirring, moulding, drying; The present invention also adopts automatic feed system, and the various material feeding amounts of use traffic controller accurate measurement, at perlite material outlet, Calucium Silicate powder material outlet, shortwave fiber material outlet with store simple import and export flow quantity control instrument is installed respectively, thereby avoided artificial factor.
The present invention adopts following technical scheme:
(1) material choice
1. pearlstone: unit weight=60kg/m
3(± 5kg/m
3); Granularity (mass percent) 0.425mm accounts for more than 85% to the 2.0mm particle, greater than 2mm≤2%, less than 0.25mm≤8%; Water ratio≤2%;
2. microporous calcium silicate particle; Particle diameter is 0.4～2mm, water ratio≤2%;
3. shortwave fiber; Length 15～30mm, water ratio＜1%;
4. hydrophober; The self-control methyl-silicone oil;
5. binding agent; Bubble flower alkali (having another name called water glass), modulus 3.1～3.6, density 〉=1.31;
6. water.
(2) production technique
The production process of the hydrophobic expansion pearlite thermal insulation product that the present invention relates to is as follows:
1. prepare the microporous calcium silicate particle earlier: the microporous calcium silicate products waste product is smashed,, chosen particle diameter and be the microporous calcium silicate particle of 0.4～2mm through screening, standby.
2. prepare burden: by weight percentage, pearlstone 45%～55%, microporous calcium silicate particle 7%～15%, shortwave fiber 1.2%～1.8%, hydrophober 5.8%～7.2%, binding agent 23%～32%, water 3.5%～6%.Hydrophober, binding agent and water are mixed in storage cylinder, standby.
3. charging: adopt automatic feed system, expanded perlite granule and microporous calcium silicate particle are transported to perlite feed bin and Calucium Silicate powder feed bin respectively with lift; Dispersed preferably for guaranteeing the shortwave fiber, use oscillating feeder to the fiber magazine feed;
4. stir: the shortwave fiber of pearlstone, microporous calcium silicate particle and favorable dispersity is added the mixing drum stirring, simultaneously the mixture of the hydrophober, binding agent and the water that the mix form with spraying is added in the mixing drum, fully stir, make it to become uniform compound with pearlstone, microporous calcium silicate particle and shortwave blending in of fibers;
5. moulding: will be sent to shaper compression moulding from the mixing bulk cargo that mixing drum comes out.Be to suppress at 3: 1 according to bulk cargo/finished-product volume ratio in the pressing process, used pressure is 5～10MPa;
6. dry: as the hydrophobic pearlite insulating product of compression moulding to be placed 90～110 ℃ drying in oven;
7. inspection after construction, packing warehouse-in.
The optimised process prescription of this production technique is: by weight percentage, and pearlstone 49.8%, microporous calcium silicate particle 10%, shortwave fiber 1.4%, hydrophober 6.5%, binding agent 27.7%, water 4.6%.
Advantage of the present invention and positively effect
The first, as a kind of raw material, not only improved the waste product utilization ratio with the microporous calcium silicate products waste product, and its adding can effectively reduce the thermal conductivity of hydrophobic expansion pearlite thermal insulation product, increase ultimate compression strength.
The second, in order accurately to control various material feeding amounts, the present invention adopts automatic feed system, and computer is monitored in real time, metering has accurately been avoided artificial factor, has not only guaranteed the stable of product performance, and saved manpower, and reduced wastage of material, reduced cost.In addition, the present invention's charging, blowing in process of production carries out continuously, thereby improved production efficiency.Product of the present invention has light weight, insulation, waterproof, does not fire, anti-high extruding, good erosion resistance and to characteristics such as people and animals' toxicological harmlesss.Its main performance index is better than national standard, the technic index that reaches: unit weight≤200Kg/m
3Ultimate compression strength 〉=0.7Mpa; Folding strength 〉=0.6Mpa; Thermal conductivity 0.062W/m.K; Linear shrinkage ratio≤2%; Hydrophobic rate 〉=98%.
Four, description of drawings
Fig. 1 is the process flow diagram that the present invention produces hydrophobic expansion pearlite thermal insulation product.
Five, embodiment
Contrast Fig. 1, the specific implementation process of the present invention being produced hydrophobic expansion pearlite thermal insulation product is described as follows:
The first step, standby: the microporous calcium silicate products waste product is smashed,, chosen particle diameter and be the microporous calcium silicate particle of 0.4～2mm through screening, standby.
Second step, batching: transport 49.8% pearlstone and 10% microporous calcium silicate particle respectively to perlite feed bin and Calucium Silicate powder feed bin with lift, give the fiber feed bin with dispersive 1.4% shortwave fiber feed with oscillating feeder; Enter with flow quantity control instrument, the amount of the hydrophober of storage cylinder, water glass and water accounts for 6.5%, 27.7% and 4.6% of gross weight respectively.
In the 3rd step, stir: pearlstone, microporous calcium silicate particle and shortwave fiber are added in the mixing drum mix, stir, be added in the mixture of the hydrophober, water and the water glass that mix in the storage cylinder while stirring with the form of spraying, fully stir.
The 4th step, moulding: the mixing bulk cargo that stirs is come out from the mixing drum discharge port, be sent to shaper compression moulding.In the pressing process, be to suppress at 3: 1 according to bulk cargo/finished-product volume ratio, used pressure is 5～10MPa.
The 5th step, oven dry: the goods of compression moulding are put into 90～110 ℃ of baking ovens dry, promptly obtain having the insulating product of certain intensity.
The 6th step, inspection after construction, packing warehouse-in.
Performance in order to ensure hydrophobic expansion pearlite thermal insulation product, according to the optimised process prescription, export the weight percent that the flow instrument control that is provided with enters pearlstone, microporous calcium silicate particle, shortwave fiber and the mixture (hydrophober, water and water glass) of mixing drum with material outlet and storage cylinder, be respectively 49.8%, 10%, 1.4% and 38.8%.
Product of the present invention and usual production and national standard physical performance index comparison sheet:
As can be known from the above table: product of the present invention has the advantage that tangible unit weight is light, thermal conductivity is little, pressure-proof and snap-resistent intensity is high.
Claims (8)
1. the production technique of a hydrophobic expansion pearlite thermal insulation product, it is characterized in that: it comprises following 5 steps: prepare burden according to weight percent (1), and raw material comprises pearlstone, microporous calcium silicate particle, hydrophober, water, shortwave fiber and binding agent; (2) above-mentioned raw materials is mixed to evenly; (3) be to be pressed at 3: 1 according to bulk cargo/finished-product volume ratio, used pressure is 5～10MPa; (4) in 90～110 ℃ of baking ovens, dry; (5) inspection after construction.
2. production technique according to claim 1 is characterized in that described pearlstone specification: unit weight=60kg/m
3(± 5kg/m
3), size range: 0.25mm～2mm is greater than 2mm≤2%, less than 0.25mm≤8%.
3. production technique according to claim 1 is characterized in that described microporous calcium silicate particle, and its particle diameter is 0.4～2mm, water ratio≤2%.
4. production technique according to claim 1 is characterized in that described hydrophober is homemade methyl-silicone oil.
5. production technique according to claim 1 is characterized in that described shortwave staple length is 15～30mm, water ratio＜1%.
6. production technique according to claim 1 is characterized in that described binding agent is bubble flower alkali, and modulus is 3.1～3.6, density 〉=1.31.
7. production technique according to claim 1 is characterized in that described technical recipe is: pearlstone 45%～55%, microporous calcium silicate particle 7%～15%, shortwave fiber 1.2%～1.8%, hydrophober 5.8%～7.2%, binding agent 23%～32%, water 3.5%～6%.
8. the production technique that is used for hydrophobic expansion pearlite thermal insulation product, accurately the various material feeding amounts of control is characterized in that at perlite bin outlet, Calucium Silicate powder bin outlet, shortwave fiber bin outlet and storage cylinder import and export flow quantity control instrument being installed respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910098861 CN101891441A (en) | 2009-05-21 | 2009-05-21 | Production process for hydrophobic expansion pearlite thermal insulation product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910098861 CN101891441A (en) | 2009-05-21 | 2009-05-21 | Production process for hydrophobic expansion pearlite thermal insulation product |
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| CN101891441A true CN101891441A (en) | 2010-11-24 |
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|---|---|---|---|
| CN 200910098861 Pending CN101891441A (en) | 2009-05-21 | 2009-05-21 | Production process for hydrophobic expansion pearlite thermal insulation product |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226498A (en) * | 2011-05-31 | 2011-10-26 | 上海交通大学 | Expanded perlite hydrophobic system for liquefied natural gas (LNG) carrier |
| CN102304948A (en) * | 2011-09-19 | 2012-01-04 | 李金峰 | Method for processing light fireproof insulation board |
| CN102701703A (en) * | 2012-05-25 | 2012-10-03 | 太仓市新星轻工助剂厂 | Inorganic waterproof glue |
| CN102808459A (en) * | 2012-08-16 | 2012-12-05 | 青岛煜志机械科技有限公司 | Fireproof thermal-insulating plate and preparation process thereof |
| CN107986733A (en) * | 2017-11-29 | 2018-05-04 | 滨州学院 | Flame-retardant thermal insulation material comprising the modified expanded vermiculite of ceramic fibre and preparation method thereof |
-
2009
- 2009-05-21 CN CN 200910098861 patent/CN101891441A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226498A (en) * | 2011-05-31 | 2011-10-26 | 上海交通大学 | Expanded perlite hydrophobic system for liquefied natural gas (LNG) carrier |
| CN102226498B (en) * | 2011-05-31 | 2012-07-25 | 上海交通大学 | Expanded perlite hydrophobic system for liquefied natural gas (LNG) carrier |
| CN102304948A (en) * | 2011-09-19 | 2012-01-04 | 李金峰 | Method for processing light fireproof insulation board |
| CN102304948B (en) * | 2011-09-19 | 2013-06-19 | 青岛文创科技有限公司 | Method for processing light fireproof insulation board |
| CN102701703A (en) * | 2012-05-25 | 2012-10-03 | 太仓市新星轻工助剂厂 | Inorganic waterproof glue |
| CN102808459A (en) * | 2012-08-16 | 2012-12-05 | 青岛煜志机械科技有限公司 | Fireproof thermal-insulating plate and preparation process thereof |
| CN107986733A (en) * | 2017-11-29 | 2018-05-04 | 滨州学院 | Flame-retardant thermal insulation material comprising the modified expanded vermiculite of ceramic fibre and preparation method thereof |
| CN107986733B (en) * | 2017-11-29 | 2020-07-28 | 山东建筑大学 | Flame-retardant heat-insulating material containing ceramic fiber modified expanded vermiculite and preparation method thereof |
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Application publication date: 20101124 |