CN101948291A - Preparation process of heat insulation coating - Google Patents
Preparation process of heat insulation coating Download PDFInfo
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- CN101948291A CN101948291A CN2010102961556A CN201010296155A CN101948291A CN 101948291 A CN101948291 A CN 101948291A CN 2010102961556 A CN2010102961556 A CN 2010102961556A CN 201010296155 A CN201010296155 A CN 201010296155A CN 101948291 A CN101948291 A CN 101948291A
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Abstract
The invention discloses a preparation process of a heat insulation coating, comprising the following steps: adding sodium silicate into rare earth zirconium with the molar ratio of 2 to 8%, foaming, roasting and shaping to form vitrified balls, and steeping in base for latter use; finely grinding perlite, heating and roasting in stage to prepare hollow ceramic balls with closed pores for latter use; heating the sodium silicate to the temperature of 80 to 90 DEG C, adding the modifying agent with the molar ratio of 12 to 18% for modification, and preparing aqueous inorganic high temperature adhesive for latter use; processing metal titanium chloride under certain conditions to prepare hollow balls coated by active rare earth titanium; adding water into inorganic fiber and hydroxycellulose, dispersing at high speed to prepare the slurry for latter use; mixing 8 to 12 parts of the material obtained in step (1), 10 to 15 parts of the material obtained in step (2), 45 to 52 parts of the material obtained in step (3), 28 to 38 parts of the material obtained in step (4), and 5 to 8 parts of the material obtained in step (5) by weight part under room temperature, and adding 0.5 to 1 part of dispersing agent, 0.5 to 1 part of thickening agent and 0.2 to 0.4 part of defoamer to reach the certain viscosity to finally obtain the finished product.
Description
Technical field
The present invention relates to a kind of preparation technology of thermal insulation coatings, especially a kind of high temperature active rare earth, nanometer titanium coat the preparation technology of porcelain glass hollow beads thermal insulation coatings.
Background technology
Thermal insulation coatings is suitable for being applied in heat insulation, the insulation of thermal medium storage tank of large oil tank, basic, normal, high pressure steam and thermal medium pipeline, reactor, the insulation of heating unit and the outer insulation of high-temperature furnace body etc.
At present this field at home and abroad develops rapidly, concerning traditional various heat preserving modes, from result of use, take up space, many aspects such as energy-conserving and environment-protective all are revolutionary development.
But the major defect that this field exists at present is:
So 1, thermal insulation coatings can only use under 150 ℃ of following envrionment conditionss owing to use the organic binder bond heatproof relatively poor, coating deliquescing and accelerated deterioration during overtemperature, thermal conductivity increases sharply;
2, big industry institute press in widely used above steam, thermal oil, etc. the hot material of companion, its use temperature is the blind area of thermal insulation coatings at present exactly from 160 ℃ of-450 ℃ of intervals;
3, at present the high-temperature coatings reason that is difficult to promote also have that cost is higher, construction technology difficult (need to heat up and solidify) etc.
4, this field is in element combinations, and new element (rare earth) uses, and nanotechnology many aspects such as incorporates and exists development space, such as improving the thermal resistance effect, improves paint adhesion and surface strength, strengthens the wide in range property of construction technology, or the like.
Summary of the invention
A kind of thermal insulation coatings preparation technology comprises the steps:
1, the ratio of 2-8% adds rare earth zirconium and foaming in molar ratio, glass bead is made in the roasting typing with water glass, and alkali soaks, standby;
2, closed pore hollow porcelain microballon is made in perlite is in small, broken bits, zone heating (material is in the temperature of space dehydration, expansion, vitreous, cooling, the required control of finalizing the design, come out of the stove) roasting, and is standby;
3, water glass is heated to 80-90 ℃ and in molar ratio 12-18% add modifier modification, make the aqueous inorganic high-temperature agglomerant, standby;
4, with metal titanium villaumite 4-9% adding in molar ratio pure water, be made into mciro emulsifying nano granules preparation environment, add the material 3-7mol that step (1) obtains under heating, stirring, the HF oscillation condition, regulate the control pH value, generate the coated hollow beads of titanium, aging 2-4h; Washing, filtration at temperature 80-90 ℃, pressure 0.2-0, under 4Mpa, the mixing speed 300-500 commentaries on classics/min prerequisite, add rare earth element nitrate, regulate the control pH value, make the coated hollow beads of active rare earth titanium;
5, inorganic fibre and hydroxylated cellulose are added the water high speed dispersion, it is standby to make slurry;
6, by weight, material 8-12 part that step (1) is obtained, material 10-15 part that step (2) obtains, material 45-52 part that step (3) obtains, material 28-38 part that step (4) obtains, material 5-8 part that step (5) obtains are mixed at normal temperatures, add 0.5-1 part dispersion agent, 0.5-1 part thickening material and 0.2-0.4 part defoamer simultaneously, reach certain viscosity, promptly obtain finished product.
Two, the inventive point of this scheme
(1) addition element zirconium, yttrium (rare earth) when bead forms strengthen the surface strength of bead greatly;
(2) the utilization nanotechnology is at the rare earth element of bead surface coated titanium and activation titanium, to strengthen the heat-insulation and heat-preservation ability;
(3) with compounding technology the aqueous inorganic binding agent is made in the water glass modification, strengthened coating thermotolerance and cohesiveness and surface strength.
Description of drawings
Fig. 1: high temperature active rare earth, nanometer titanium coat porcelain glass hollow beads thermal insulation coatings process flow sheet
Embodiment
The coating gordian technique that is used for heat insulating is 1, diameter is less than the vacuum porcelain microballon of 0.1mm, but the microballon in this field is because material cause causes its intensity very low at present, in case the microballon fragmentation, the performance of coating promptly reduces.Adopt the rare earth zirconium to add the microballon element, strengthened the toughness of material, the probability of microballon fragmentation reduces more than one times.2, titanium is isolated ultraviolet ray and ultrared best element, and is with nanotechnology that titanium is coated on microballon, with rare earth element titanium elements activated simultaneously, and the heat-insulation and heat-preservation rate of coating obviously improves.3, the application of aqueous inorganic binding agent makes the Applicable temperature of coating rise to 650 degree from 150 degree, and surface strength also is doubled.
1, the ratio of 2-8% adds rare earth zirconium and foaming in molar ratio, glass bead is made in the roasting typing with water glass, and alkali soaks, standby;
2, closed pore hollow porcelain microballon is made in perlite is in small, broken bits, zone heating (material is in the temperature of space dehydration, expansion, vitreous, cooling, the required control of finalizing the design, come out of the stove) roasting, and is standby;
3, water glass is heated to 80-90 ℃ and in molar ratio 12-18% add modifier modification, make the aqueous inorganic high-temperature agglomerant, standby;
4, with metal titanium villaumite 4-9% adding in molar ratio pure water, be made into mciro emulsifying nano granules preparation environment, add the material 3-7mol that step (1) obtains under heating, stirring, the HF oscillation condition, regulate the control pH value, generate the coated hollow beads of titanium, aging 2-4h; Washing, filtration at temperature 80-90 ℃, pressure 0.2-0, under 4Mpa, the mixing speed 300-500 commentaries on classics/min prerequisite, add rare earth element nitrate, regulate the control pH value, make the coated hollow beads of active rare earth titanium;
5, inorganic fibre and hydroxylated cellulose are added the water high speed dispersion, it is standby to make slurry;
6, by weight, material 8-12 part that step (1) is obtained, material 10-15 part that step (2) obtains, material 45-52 part that step (3) obtains, material 28-38 part that step (4) obtains, material 5-8 part that step (5) obtains are mixed at normal temperatures, add 0.5-1 part dispersion agent, 0.5-1 part thickening material and 0.2-0.4 part defoamer simultaneously, reach certain viscosity, promptly obtain finished product.
Claims (1)
1. thermal insulation coatings preparation technology is characterized in that comprising the steps: that (1) ratio of 2-8% adds rare earth zirconium and foaming in molar ratio, glass bead is made in the roasting typing with water glass, and alkali soaks, standby;
(2) closed pore hollow porcelain microballon is made in perlite is in small, broken bits, zone heating, roasting, and is standby;
(3) water glass is heated to 80-90 ℃ and in molar ratio 12-18% add modifier modification, make the aqueous inorganic high-temperature agglomerant, standby;
(4) with metal titanium villaumite 4-9% adding in molar ratio pure water, be made into mciro emulsifying nano granules preparation environment, add the material 3-7mol that step (1) obtains under heating, stirring, the HF oscillation condition, regulate the control pH value, generate the coated hollow beads of titanium, aging 2-4h; Washing, filtration at temperature 80-90 ℃, pressure 0.2-0, under 4Mpa, the mixing speed 300-500 commentaries on classics/min prerequisite, add rare earth element nitrate, regulate the control pH value, make the coated hollow beads of active rare earth titanium;
(5) inorganic fibre and hydroxylated cellulose are added the water high speed dispersion, it is standby to make slurry;
(6) by weight, material 8-12 part that step (1) is obtained, material 10-15 part that step (2) obtains, material 45-52 part that step (3) obtains, material 28-38 part that step (4) obtains, material 5-8 part that step (5) obtains are mixed at normal temperatures, add 0.5-1 part dispersion agent, 0.5-1 part thickening material and 0.2-0.4 part defoamer simultaneously, reach certain viscosity, promptly obtain finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102961556A CN101948291A (en) | 2010-09-29 | 2010-09-29 | Preparation process of heat insulation coating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102961556A CN101948291A (en) | 2010-09-29 | 2010-09-29 | Preparation process of heat insulation coating |
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| CN101948291A true CN101948291A (en) | 2011-01-19 |
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| CN2010102961556A Pending CN101948291A (en) | 2010-09-29 | 2010-09-29 | Preparation process of heat insulation coating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226042A (en) * | 2011-04-20 | 2011-10-26 | 天津恒实通工程技术发展有限公司 | Method for coating hollow microbeads with titanium-lanthanum oxides |
| CN105693189A (en) * | 2015-11-28 | 2016-06-22 | 惠州卫生职业技术学院 | Preparation technology of heat insulation coating |
-
2010
- 2010-09-29 CN CN2010102961556A patent/CN101948291A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226042A (en) * | 2011-04-20 | 2011-10-26 | 天津恒实通工程技术发展有限公司 | Method for coating hollow microbeads with titanium-lanthanum oxides |
| CN102226042B (en) * | 2011-04-20 | 2013-05-22 | 天津恒实通工程技术发展有限公司 | Method for coating hollow microbeads with titanium-lanthanum oxides |
| CN105693189A (en) * | 2015-11-28 | 2016-06-22 | 惠州卫生职业技术学院 | Preparation technology of heat insulation coating |
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Application publication date: 20110119 |