CN101520121B - Method for producing nano-pore heat insulating materials - Google Patents
Method for producing nano-pore heat insulating materials Download PDFInfo
- Publication number
- CN101520121B CN101520121B CN 200910102502 CN200910102502A CN101520121B CN 101520121 B CN101520121 B CN 101520121B CN 200910102502 CN200910102502 CN 200910102502 CN 200910102502 A CN200910102502 A CN 200910102502A CN 101520121 B CN101520121 B CN 101520121B
- Authority
- CN
- China
- Prior art keywords
- mixing tank
- powder
- closely knit
- vacuum
- heat insulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Thermal Insulation (AREA)
Abstract
The invention discloses a method for producing nano-pore heat insulating materials, which comprises the following steps that nanometer metallic oxide passes through an unpacking sucker (7) equipped wiThe invention discloses a method for producing nano-pore heat insulating materials, which comprises the following steps that nanometer metallic oxide passes through an unpacking sucker (7) equipped with secondary air, is sucked into a raw material silo (2) by a vacuum conveyer A (1) with a blower A4, densified and conveyed by a powder densifier (5) for gas displacement and enters a main mixing tanth secondary air, is sucked into a raw material silo (2) by a vacuum conveyer A (1) with a blower A4, densified and conveyed by a powder densifier (5) for gas displacement and enters a main mixing tank (8) through a middle weighting hopper (6); the primary mixing of additive is carried out in an auxiliary mixing tank (9), and even mixture is sucked into an auxiliary material silo (12) and then entk (8) through a middle weighting hopper (6); the primary mixing of additive is carried out in an auxiliary mixing tank (9), and even mixture is sucked into an auxiliary material silo (12) and then enters the main mixing tank (8); the secondary mixing of all materials is carried out in the main mixing tank (8), and multi-micropore particle heat insulating materials after being evenly mixed are suckers the main mixing tank (8); the secondary mixing of all materials is carried out in the main mixing tank (8), and multi-micropore particle heat insulating materials after being evenly mixed are sucked into a clinker silo (16) for storage by a conveyer B (15) with a blower B (18) and conveyed through a screw conveyer (17), enter into a vacuum packing and shaping device (11) and are conveyed into ed into a clinker silo (16) for storage by a conveyer B (15) with a blower B (18) and conveyed through a screw conveyer (17), enter into a vacuum packing and shaping device (11) and are conveyed into a pressing device (14) through a conveying device (13) and pressed to obtain finished products. The invention can improve the production efficiency and the mechanical strength of products and solve tha pressing device (14) through a conveying device (13) and pressed to obtain finished products. The invention can improve the production efficiency and the mechanical strength of products and solve the environment pollution problem. e environment pollution problem.
Description
Technical field
The present invention relates to the material technology field, particularly the production method of nano-pore heat insulating materials.
Background technique
The progress of energy-conserving and emission-cutting technology is the key subjects that human kind sustainable development faces.Energy in reduction production of employing high-performance thermoinsulation material and the life scatters and disappears, and is the mode the most direct, effective, that cost is the cheapest.Nano-porous super thermal insulation material is a kind of newly-developed, mainly towards the high and low temperature engineering thermal insulation, the novel heat insulation material that adopts nanometer technology to make, the network structure of its nano-pore (less than 100nm) and can effectively suppress solid, gaseous state transmission of heat, gaseous exchange and radiative heat transfer to the infrared radiation of industrial wavelength and scattering properties.Compare with traditional insulation materials, nano-porous super thermal insulation material can reduce thermal-protective coating thickness 3/4 usually, and fractional energy savings generally reaches 25-30%, not only can significantly reduce the energy consumption in production and the use, and the also corresponding size of equipment and the weight of making is significantly reduced.
Chinese patent notice of authorization CN1329333C discloses " preparation method of a kind of calcium silicate composite Nano hole super insulating material " on 07 13rd, 2005, be to utilize xonotlite fiber to carry out compound as skeleton and aerosil, then through gel and ageing, by the autoclave supercritical drying, prepare the compound nano-porous super thermal insulation material of calcium silicate.Although this method can obtain required heat-insulating property and requirement of mechanical strength, but angle from preparation technology, its Point of Strength mainly has been placed in the ageing and drying of aerosil, this preparation process not only is difficult to control, and quite complicated, inefficiency (digestion time of gel just needs a couple of days), obtain high-quality aerogel, must use supercritical technology, cause cost higher, be difficult to realize industrialization.
Chinese patent publication number CN101302091A discloses " a kind of nano-hole silica composite heat insulation material and preparation method thereof " on November 12nd, 2008, its utilize the nano-hole silica powder for base material, aluminum silicate fiber as strengthen skeleton, crystal whisker of hexa potassium titanate as infrared external reflection agent make nano-pore heat insulating materials.Its preparation technology is that said components and binder thereof are prepared into slurry, injects mould, at high temperature dries then.Although technology is comparatively simple, but in making the process of slurry, the siliceous powder with nano-pore can contact the surface tension that produces in the subsequent drying process with water or organic solvent, nano-pore structure can be destroyed, cause the heat-insulating property of product not reach requirement, and heat treatment process not only energy consumption is higher since steam deviate from also very easily to cause finished product embrittlement, in the heat treatment simultaneously, there is temperature gradient in the goods section, causes in the drying process, and goods can be distorted, be out of shape.
Summary of the invention
A kind of production efficiency of products and the mechanical strength of improving that the objective of the invention is to overcome above-mentioned shortcoming and provide, and can solve the method for producing nano-pore heat insulating materials of environmental pollution problem.
Method for producing nano-pore heat insulating materials of the present invention comprises the steps:
A, mixing:
Nanosize metal oxide is by being furnished with the suction nozzle that unpacks of auxiliary wind, vacuum feeder A suction raw material silo by band blower fan A, the material of being stored in the raw material silo, stir by ribbon in negative pressure, the raw material silo, real by the closely knit secret of powder, carry and carry out gas displacement, the closely knit machine of powder is finished density and is promoted one times, enters main mixing tank through middle weighing hopper;
Opacifier, fiber and other performance-enhancing additive thereof are carried out mixed once in auxiliary the mixing, mixing speed is 3000-6000 rev/min, stir 30-60 second, mix obtain after finishing evenly, in the mixture suction auxiliary material storehouse that disperses, enter main mixing tank then;
The various materials that constitute the nano super thermoinsulation material carry out secondary in main mixing tank mixes, and mixing speed is 1500-6000 rev/min, stirs 30-180 second, the many micropores particle thermoinsulation material after being uniformly mixed;
B, unpack and mass transport:
Even mixed many micropores particle thermoinsulation material is deposited by the feeder B suction grog storage of band blower fan B, adopted helical stir to add dilute phase negative pressure transportation mode; When unpacking suction nozzle when degree of vacuum is arranged, auxiliary wind circulates naturally, and when secondary wind speed drifted about speed greater than rising of powder, material hiked up, and is taken away by negative pressure, aspirates material with this;
C, vacuum-packed shaping:
The material that comes out from the grog storehouse is carried by screw conveyor, behind the electronic scale weighing, enters vacuum-packed apparatus for shaping and is pre-formed into required form, is sent to press device through transfer equipment, gets finished product after the compacting.
Above-mentioned method for producing nano-pore heat insulating materials, wherein: the closely knit machine of powder adopts and is provided with the closely knit conveyor of spiral that ammonia adds pore, the air of carrying secretly originally with the ammonia displacement in closely knit powder.
The present invention compares with prior art, as can be known from the above technical solutions, the nanosize metal oxide powder of formation nano-porous super thermal insulation material main body composition and the mixing of various performance-enhancing additive are adopted the secondary mixing method, promptly at first additives such as opacifier, reinforcing fiber, binder being carried out one-level mixes, to form the homogeneous mixture of performance-enhancing additive, and then carry out secondary with the nanosize metal oxide powder and mix, with the full and uniform thermoinsulation material particles mixture of final formation; Utilizing negative pressure of vacuum to realize the efficient conveying between each cell cube of manufacturing mechanism of nanometer grade powder and composite material thereof, avoid the excessive befouling environment of powder simultaneously on the production technology in conjunction with the ribbon alr mode; Adopt the closely knit equipment of powder before mixing, in advance the bulk density of nanosize metal oxide powder to be enhanced about more than once, to increase the output of single high-speed mixing, corresponding boosting productivity more than one times is ammonia with the mechanical strength of final products after improving press forming and reduces elastic after effect in the air displacement of the nanosize metal oxide powder being carried out carry secretly in powder in closely knit; Adopt vacuum package machine and shaping mould, be pre-formed into required form after making nanocomposite fill big envelope, to satisfy the requirement of density uniformity everywhere after the product compacting.
Below, further specify beneficial effect of the present invention by embodiment.
Description of drawings
Accompanying drawing is a process flow diagram of the present invention.
Mark among the figure:
1, vacuum feeder A; 2, raw material silo; 3, ribbon; 4, blower fan A; 5, the closely knit machine of powder; 6, middle weighing hopper; 7, unpack suction nozzle; 8, main mixing tank; 9, auxiliary material mixing tank; 10, electronic scale; 11, vacuum-packed apparatus for shaping; 12, auxiliary material storehouse; 13, transfer equipment; 14, press device; 15, vacuum feeder B; 16, grog storehouse; 17, screw conveyor; 18, blower fan B.
Embodiment
Method for producing nano-pore heat insulating materials comprises the steps:
A, mixing:
Nanosize metal oxide unpacks suction nozzle 7 by what be furnished with auxiliary wind, vacuum feeder A1 suction raw material silo 2 by band blower fan A4, the material of being stored in the raw material silo, stir by ribbon 3 in negative pressure, the raw material silo 2, the closely knit machine 5 of powder adopts and is provided with the closely knit conveyor of spiral that ammonia adds pore, originally the air of carrying secretly with ammonia displacement in closely knit powder is with the elastic after effect that reduces material and increase mechanical strength and stability.5 closely knit by the closely knit machine of powder, carry and carry out gas displacement, the closely knit machine 5 of powder is finished density and is promoted one times, enters main mixing tank 8 through middle weighing hopper 6;
Opacifier, fiber and other performance-enhancing additive thereof are carried out mixed once in auxiliary mixing tank 9, mixing speed is 3000 rev/mins, stir 60 seconds, mix obtain after finishing evenly, in the mixture suction auxiliary material storehouse 12 that disperses, enter main mixing tank 8 then;
The various materials that constitute the nano super thermoinsulation material carry out secondary in main mixing tank mixes, and mixing speed is 3800 rev/mins, stirs 90 seconds, gets evenly mixed many micropores particle thermoinsulation material;
B, unpack and mass transport:
With evenly feeder B15 suction grog storehouse 16 storages of mixed many micropores particle thermoinsulation material, adopt helical stir to add dilute phase negative pressure transportation mode by being with blower fan B18; When unpacking suction nozzle when degree of vacuum is arranged, auxiliary wind circulates naturally, and when secondary wind speed drifted about speed greater than rising of powder, material hiked up, and is taken away by negative pressure, aspirates material with this;
C, vacuum-packed shaping:
The material that comes out from grog storehouse 16, carry by screw conveyor 17, behind the electronic scale weighing 10, enter vacuum-packed apparatus for shaping 11 and be pre-formed into required form (to satisfy end article behind follow-up pressing process, the requirement of density uniformity everywhere), be sent to press device 14 through transfer equipment 13, get finished product after the compacting.
Method for producing nano-pore heat insulating materials comprises the steps:
A, mixing:
Nanosize metal oxide unpacks suction nozzle 7 by what be furnished with auxiliary wind, vacuum feeder A1 suction raw material silo 2 by band blower fan A4, the material of being stored in the raw material silo, stir by ribbon 3 in negative pressure, the raw material silo 2, the closely knit machine 5 of powder adopts and is provided with the closely knit conveyor of spiral that ammonia adds pore, originally the air of carrying secretly with ammonia displacement in closely knit powder is with the elastic after effect that reduces material and increase mechanical strength and stability.5 closely knit by the closely knit machine of powder, carry and carry out gas displacement, the closely knit machine 5 of powder is finished density and is promoted one times, enters main mixing tank 8 through middle weighing hopper 6;
Opacifier, fiber and other performance-enhancing additive thereof are carried out mixed once in auxiliary mixing tank 9, mixing speed is 6000 rev/mins, stir 30 seconds, mix obtain after finishing evenly, in the mixture suction auxiliary material storehouse 12 that disperses, enter main mixing tank 8 then;
The various materials that constitute the nano super thermoinsulation material carry out secondary in main mixing tank mixes, and mixing speed is 1500 rev/mins, stirs 180 seconds, gets the adiabatic material of evenly mixed many micropores particle;
All the other are with embodiment 1.
Method for producing nano-pore heat insulating materials comprises the steps:
A, mixing:
Nanosize metal oxide unpacks suction nozzle 7 by what be furnished with auxiliary wind, vacuum feeder A1 suction raw material silo 2 by band blower fan A4, the material of being stored in the raw material silo, stir by ribbon 3 in negative pressure, the raw material silo 2, the closely knit machine 5 of powder adopts and is provided with the closely knit conveyor of spiral that ammonia adds pore, originally the air of carrying secretly with ammonia displacement in closely knit powder is with the elastic after effect that reduces material and increase mechanical strength and stability.5 closely knit by the closely knit machine of powder, carry and carry out gas displacement, the closely knit machine 5 of powder is finished density and is promoted one times, enters main mixing tank 8 through middle weighing hopper 6;
Opacifier, fiber and other performance-enhancing additive thereof are carried out mixed once in auxiliary mixing tank 9, mixing speed is 5000 rev/mins, stir 40 seconds, mix obtain after finishing evenly, in the mixture suction auxiliary material storehouse 12 that disperses, enter main mixing tank 8 then;
The various materials that constitute the nano super thermoinsulation material carry out secondary in main mixing tank mixes, and mixing speed is 6000 rev/mins, stirs 30 seconds, gets the adiabatic material of evenly mixed many micropores particle;
All the other are with embodiment 1.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, any technical solution of the present invention content that do not break away from,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (1)
1. a method for producing nano-pore heat insulating materials comprises the steps:
A, mixing:
Nanosize metal oxide unpacks suction nozzle (7) by what be furnished with auxiliary wind, vacuum feeder A (1) suction raw material silo (2) by band blower fan A (4), the material of being stored in the raw material silo, stir by negative pressure, the interior ribbon of raw material silo (2) (3), closely knit by the closely knit machine of powder (5), carry the promoting the circulation of qi body displacement of going forward side by side, the closely knit machine of powder (5) is finished density and is promoted one times, enters main mixing tank (8) through middle weighing hopper (6);
Opacifier, fiber and other performance-enhancing additive thereof are carried out mixed once in auxiliary mixing tank (9), mixing speed is 3000-6000 rev/min, stir 30-60 second, mix obtain after finishing evenly, in the mixture suction auxiliary material storehouse (12) that disperses, enter main mixing tank (8) then;
The various materials that constitute the nano super thermoinsulation material carry out secondary in main mixing tank (8) mixes, and mixing speed is 1500-6000 rev/min, stirs 30-180 second, the many micropores particle thermoinsulation material after being uniformly mixed;
B, unpack and mass transport:
Evenly mixed many micropores particle thermoinsulation material stores by feeder B (15) the suction grog storehouse (16) of band blower fan B (18), adopts helical stir to add dilute phase negative pressure transportation mode; When unpacking suction nozzle when degree of vacuum is arranged, auxiliary wind circulates naturally, and when secondary wind speed drifted about speed greater than rising of powder, material hiked up, and is taken away by negative pressure, aspirates material with this;
C, vacuum-packed shaping:
From the material that come out grog storehouse (16), carry by screw conveyor (17), behind the electronic scale weighing (10), enter vacuum-packed apparatus for shaping (11) and be pre-formed into required form, be sent to press device (14) through transfer equipment (13), get finished product after the compacting;
Wherein: the closely knit machine of powder (5) adopts and is provided with the closely knit conveyor of spiral that ammonia adds pore, the air of carrying secretly originally with the ammonia displacement in closely knit powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910102502 CN101520121B (en) | 2009-04-07 | 2009-04-07 | Method for producing nano-pore heat insulating materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910102502 CN101520121B (en) | 2009-04-07 | 2009-04-07 | Method for producing nano-pore heat insulating materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101520121A CN101520121A (en) | 2009-09-02 |
| CN101520121B true CN101520121B (en) | 2010-09-29 |
Family
ID=41080861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910102502 Expired - Fee Related CN101520121B (en) | 2009-04-07 | 2009-04-07 | Method for producing nano-pore heat insulating materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101520121B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180357B (en) * | 2011-05-04 | 2012-03-14 | 福建龙净环保股份有限公司 | Pneumatic conveying system and method for powder material with low air retention ability |
| CN102582056B (en) * | 2012-01-16 | 2014-03-19 | 佛山市金银河智能装备股份有限公司 | Production line of neutral and acidic stick bands |
| CN105499591B (en) * | 2015-12-24 | 2018-10-09 | 河南颍川新材料股份有限公司 | A kind of oil paint additive making modified technique |
-
2009
- 2009-04-07 CN CN 200910102502 patent/CN101520121B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101520121A (en) | 2009-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101844910B (en) | Thin-wall light-weighted sanitary ceramic body and manufacturing method thereof | |
| CN105130324B (en) | Manufacture method for autoclaved fly-ash aerated concrete block | |
| CN101265073B (en) | Composite silicon brick and preparation method thereof | |
| CN105314999A (en) | Nano porous high-temperature-insulating material taking thixotropic colloid as template agent and preparation method for high-temperature-insulating material | |
| CN102746003B (en) | High-strength alkali-resistant refractory castable | |
| CN101580339A (en) | Method for manufacturing composite multi-stage fused quartz powder ceramic crucible | |
| CN101520121B (en) | Method for producing nano-pore heat insulating materials | |
| CN111253139B (en) | Preparation method of high-performance structural material based on carbonation | |
| CN105541313A (en) | Nano heat-insulating material and preparation method of nano heat-insulating board | |
| CN114507080B (en) | High-toughness ceramic sheet and preparation method thereof | |
| CN103496942B (en) | The preparation method of autoclaved fly ash brick | |
| CN102219465A (en) | Formula design of novel cement-based insulation dry powder | |
| CN104844106A (en) | A3.5 B05 grade autoclaved aerated concrete block made of quartz weathered sand, and making method thereof | |
| CN103833399A (en) | Anorthite light refractory brick and preparation method thereof | |
| CN113956000A (en) | Cement kiln tail gas carbonization building prefabricated product and preparation method thereof | |
| CN101289326A (en) | Process for preparing vapour pressure air-entrained concrete light heat-insulation fireproof bricks by porcelain clay tailings | |
| CN101066875A (en) | Calcining process of synthesizing hollow silica alumina ball | |
| CN104294077B (en) | A kind of SiC/Cu composite and preparation method thereof | |
| CN105272162A (en) | Antibiotic porcelain prepared with silver ore tailings as main material | |
| CN102584260B (en) | Method for preparing cordierite-mullite composite heat-resisting material by utilizing iron tailings | |
| CN102515655B (en) | Expanded and vitrified micro-bead thermal insulation board and manufacturing method thereof | |
| CN105693148B (en) | A kind of light-weight building insulation blocks and preparation method thereof | |
| CN112174605A (en) | Graphite fireproof heat-insulation core material for external wall panel and preparation method thereof | |
| CN102206071A (en) | Formula design for novel fly-ash-based insulating dry powder | |
| CN103224373B (en) | Anti -static decoration plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20180407 |