CN103087558A - Heat-insulation anticorrosive paint for boiler rear smoke channel, preparation method of paint, and paint composition - Google Patents
Heat-insulation anticorrosive paint for boiler rear smoke channel, preparation method of paint, and paint composition Download PDFInfo
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- CN103087558A CN103087558A CN2012105623601A CN201210562360A CN103087558A CN 103087558 A CN103087558 A CN 103087558A CN 2012105623601 A CN2012105623601 A CN 2012105623601A CN 201210562360 A CN201210562360 A CN 201210562360A CN 103087558 A CN103087558 A CN 103087558A
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- end ductwork
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Abstract
The invention relates to heat-insulation anticorrosive paint for a boiler rear smoke channel, a preparation method of the paint, and a paint composition. The heat-insulation anticorrosive paint for the boiler rear smoke channel comprises the following materials according to weight percentage: 20%-30% of ceramic microbeads, 20%-30% of carborundum, 20%-30% of boron nitride, 1%-5% of fine grain alumina, 1%-5% of superfine zinc oxide, 5%-10% of titanium oxide and 1%-3% of yttria. The heat-insulation anticorrosive paint composition for the boiler rear smoke channel provided by the invention is configured as a basement membrane substance and the paint composed of a supermicro fine powder material, wherein the basement membrane substance contains a plurality of OH active groups which fast react with active components of the supermicro fine powder material and an active surface of steel to generate an inorganic polymer with a three-dimensional structure, and a coating comprising the paint composition is integrated with a steel matrix to form a polymer anticorrosive coating with effects of electrochemical protection and physical shielding.
Description
Technical field
The present invention relates to a kind of boiler back end ductwork coating and preparation method thereof and coating composition, relate in particular to a kind of boiler back end ductwork heat-insulating anti-corrosive coating and preparation method thereof and coating composition.
Background technology
Traditional grate furnace back-end ductwork is generally Plate Welding and forms, and the steel plate outside is lagging material.More than the exhanst gas outlet temperature was controlled at 100 degree, the too low formation that causes acid of temperature can be corroded flue, causes blowing out; If excess Temperature can be wasted the waste heat in flue gas.Solve at present Anticorrosion and adopt stainless steel or glass steel material more, perhaps use laying fireproof bricks.The too many manpower, material resources and financial resources of application waste of these means, and safeguard inconvenient.In order to overcome the above problems, can adopt heat-insulating anti-corrosive coating to be covered in the flue inwall, really accomplish heat insulating and corrosion.
Summary of the invention
The present invention is directed to existing process furnace above shortcomings, a kind of boiler back end ductwork heat-insulating anti-corrosive coating and preparation method thereof and coating composition are provided.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of boiler back end ductwork heat-insulating anti-corrosive coating comprises ceramic fine bead 20%～30% by its weight percent meter, silicon carbide 20%～30%, boron nitride 20%～30%, fine-grained alumina 1%～5%, super fine zinc oxide 1%～5%, titanium oxide 5%-10% and yttrium oxide 1%～3%.
On the basis of technique scheme, the present invention can also do following improvement.
Further, the particle size range of described boiler back end ductwork heat-insulating anti-corrosive coating is 8～40 μ m.
Further, the particle diameter of described ceramic fine bead is 80 μ m～100 μ m.
Further, the size distribution of described silicon carbide and boron nitride is 18～100 μ m.
Further, the particle diameter of described fine-grained alumina is less than 5 μ m.
Further, the particle diameter of described super fine zinc oxide is 5～10 μ m.
The present invention also provides a kind of technical scheme that solves the problems of the technologies described above as follows: a kind of preparation method of boiler back end ductwork heat-insulating anti-corrosive coating, mix ceramic fine bead, silicon carbide, boron nitride, fine-grained alumina, super fine zinc oxide, titanium oxide and yttrium oxide.
The present invention also provides a kind of technical scheme that solves the problems of the technologies described above as follows: a kind of coating composition, described coating composition comprises coating and Ranvier's membrane material, weight ratio between described coating and Ranvier's membrane material is 15:1, and described Ranvier's membrane comprises the aqueous dispersions of the colloid silica of 50%～85.5% alkali metal silicate aqueous solution and 14.5%～50% by its weight percent.
The invention has the beneficial effects as follows: the coating that boiler back end ductwork heat-insulating anti-corrosive coating composition configuration of the present invention consists of the Ranvier's membrane material and is made of super-fine powder material; wherein contain a large amount of OH active groups in the Ranvier's membrane material; active ingredient and the rapid reaction of iron and steel active surface of it and super-fine powder material; the inorganic polymer of generating three-dimensional structure; the coating that will comprise coating composition is connected with steel substrate, forms the polymkeric substance corrosion protection coating with electro-chemical protection and physical shielding effect.
Embodiment
Below principle of the present invention and feature are described, example only be used for to be explained the present invention, is not be used to limiting scope of the present invention.
Boiler back end ductwork heat-insulating anti-corrosive coating composition configuration consists of the Ranvier's membrane material, and (the Ranvier's membrane material mainly contains two kinds of coating that are respectively alkali metal silicate aqueous solution (50wt%～85.5wt%) and the aqueous dispersions of colloid silica (14.5wt%～50wt%)) and are made of super-fine powder material.Contain a large amount of OH active groups in the Ranvier's membrane material; active ingredient and the rapid reaction of iron and steel active surface of it and super-fine powder material; the inorganic polymer of generating three-dimensional structure; the coating that will comprise coating composition is connected with steel substrate, forms the polymkeric substance corrosion protection coating with electro-chemical protection and physical shielding effect.The composition of super-fine powder material and ratio are: ceramic fine bead 20%～30%, silicon carbide 20%～30%, boron nitride 20%～30%, fine-grained alumina 1%～5%, super fine zinc oxide 1%～5%, titanium oxide 5%～10% and yttrium oxide 1%～3%.
(OH), metallic matrix provides positive ion, can form chemical bonds, and the coupling agent in coating (being yttrium oxide) is even realized the combination of covalency chain under helping to contain hydroxyl in coating composition.Under the space reticulated structure maintained, the metal that contains in coating composition, metal oxide nano-material and yttrium oxide can help the interface transition layer of a densification of coating formation, made its Thermal Synthetic mechanical property and matrix phase coupling.When 25 ℃ of envrionment temperatures, relative humidity is less than 85% the time, and surface drying 15min does solid work 2h, can guarantee the high-level efficiency construction.Can realize excellent salt fog resistance, ageing-resistant individual layer application system, the coating of individual layer is applicable to very rugged environment.Coating has self-repair, and the local cut that external force causes still can be protected.Coating is not cut and welding damage, and the band coating welding does not affect welding quality.
Technical indicator:
Embodiment 1
Ceramic fine bead: 28%, silicon carbide: 30%, boron nitride: 25%, fine-grained alumina: 4%, super fine zinc oxide: 3%, titanium oxide: 7%, yttrium oxide: 3%.
The application step: coating and the Ranvier's membrane material of above-mentioned preparation are mixed and made into coating composition with weight ratio 15:1, and wherein the Ranvier's membrane material comprises the aqueous dispersions of the colloid silica of 50% alkali metal silicate aqueous solution and 50% by its weight percent.When application, coating composition and solidifying agent (organic resin solidifying agent) are pressed the 10:1(weight ratio) mix, should constantly stir coating during mixing and slowly mix solidifying agent.Then make coating be in suspended state after the coating that mixes being filtered with 40 eye mesh screens, application needs to complete in 4 hours, thereby completes the preparation of coating.
For the coating that embodiment 1 makes, carry out following performance test:
Embodiment 2:
Ceramic fine bead: 28%, silicon carbide: 23%, boron nitride: 30%, fine-grained alumina: 5%, super fine zinc oxide: 5%, titanium oxide: 8%, yttrium oxide: 1%.
The application step: coating and the Ranvier's membrane material of above-mentioned preparation are mixed and made into coating composition with weight ratio 15:1, and wherein the Ranvier's membrane material comprises the aqueous dispersions of the colloid silica of 85.5% alkali metal silicate aqueous solution and 14.5% by its weight percent.When application, coating composition and solidifying agent (organic resin solidifying agent) are pressed the 10:1(weight ratio) mix, should constantly stir coating during mixing and slowly mix solidifying agent.Then make coating be in suspended state after the coating that mixes being filtered with 40 eye mesh screens, application needs to complete in 4 hours, thereby completes the preparation of coating.
For the coating that embodiment 2 makes, carry out following performance test:
Dust Capacity in flue gas is larger, and flue gas flow rate is larger, causes tail flue gas that flue is washed away when heavier, ceramic fine bead, and silicon carbide, the particle diameter of boron nitride is larger, and large percentage can wear prevention; Sulfur sesquioxide equal size in flue gas is more, and temperature is when the acid dew point left and right, fine-grained alumina, and the super fine zinc oxide equal size is more, and particle diameter is less, can prevent preferably like this corrosion.
The above is only preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a boiler back end ductwork heat-insulating anti-corrosive coating, is characterized in that, comprises ceramic fine bead 20%～30% by its weight percent meter, silicon carbide 20%～30%, boron nitride 20%～30%, fine-grained alumina 1%～5%, super fine zinc oxide 1%～5%, titanium oxide 5%～10% and yttrium oxide 1%～3%.
2. boiler back end ductwork heat-insulating anti-corrosive coating according to claim 1, is characterized in that, the particle size range of described boiler back end ductwork heat-insulating anti-corrosive coating is 8～40 μ m.
3. boiler back end ductwork heat-insulating anti-corrosive coating according to claim 1, is characterized in that, the particle diameter of described ceramic fine bead is 80 μ m～100 μ m.
4. boiler back end ductwork heat-insulating anti-corrosive coating according to claim 1, is characterized in that, the size distribution of described silicon carbide and boron nitride is 18～100 μ m.
5. boiler back end ductwork heat-insulating anti-corrosive coating according to claim 1, is characterized in that, the particle diameter of described fine-grained alumina is less than 5 μ m.
6. boiler back end ductwork heat-insulating anti-corrosive coating according to claim 1, is characterized in that, the particle diameter of described super fine zinc oxide is 5～10 μ m.
7. the preparation method of a described boiler back end ductwork heat-insulating anti-corrosive coating as arbitrary in claim 1 to 6, it is characterized in that, ceramic fine bead, silicon carbide, boron nitride, fine-grained alumina, super fine zinc oxide, titanium oxide and yttrium oxide weight percent as claimed in claim 1 is mixed.
8. coating composition, described coating composition comprises described coating as arbitrary in claim 1 to 6 and Ranvier's membrane material, weight ratio between described coating and Ranvier's membrane material is 15:1, and described Ranvier's membrane comprises the aqueous dispersions of the colloid silica of 50%～85.5% alkali metal silicate aqueous solution and 14.5%～50% by its weight percent.
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| CN201210562360.1A CN103087558B (en) | 2012-12-21 | 2012-12-21 | Boiler back end ductwork heat-insulating anti-corrosive coating and preparation method thereof and coating composition |
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| CN201210562360.1A CN103087558B (en) | 2012-12-21 | 2012-12-21 | Boiler back end ductwork heat-insulating anti-corrosive coating and preparation method thereof and coating composition |
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| CN103087558A true CN103087558A (en) | 2013-05-08 |
| CN103087558B CN103087558B (en) | 2016-04-20 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103965666A (en) * | 2014-05-20 | 2014-08-06 | 辽宁艾特电力节能科技有限公司 | Nanocomposite and nanocomposite furnace tube |
| CN104530779A (en) * | 2014-12-23 | 2015-04-22 | 江苏宇昊新能源科技有限公司 | Corrosion-resistant pipeline coating |
| CN105623501A (en) * | 2016-03-23 | 2016-06-01 | 常州耀辉新材料科技有限公司 | Environment-friendly acid-resistant high-temperature-resistant polymerized coating |
| CN106147460A (en) * | 2016-09-29 | 2016-11-23 | 中国科学院重庆绿色智能技术研究院 | A kind of heat insulating coatings |
| CN107189506A (en) * | 2017-07-05 | 2017-09-22 | 蚌埠市风驰滤清器有限公司 | Filter casing high adhesion force metallic paint and preparation method thereof |
| CN107325731A (en) * | 2017-07-05 | 2017-11-07 | 蚌埠市风驰滤清器有限公司 | Filter casing water resistance metallic paint and preparation method thereof |
| CN107641342A (en) * | 2017-08-30 | 2018-01-30 | 王珩 | One kind heat absorption anti-corrosion energy-saving coatings and preparation method thereof and application method |
| CN107880609A (en) * | 2017-11-11 | 2018-04-06 | 安徽国电能源设备工程有限公司 | A kind of boilers heated electrically pipeline coating |
| CN112724713A (en) * | 2020-12-03 | 2021-04-30 | 湖南格仑新材股份有限公司 | Preparation method of antibacterial anticorrosive paint |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103965666A (en) * | 2014-05-20 | 2014-08-06 | 辽宁艾特电力节能科技有限公司 | Nanocomposite and nanocomposite furnace tube |
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| CN104530779A (en) * | 2014-12-23 | 2015-04-22 | 江苏宇昊新能源科技有限公司 | Corrosion-resistant pipeline coating |
| CN105623501A (en) * | 2016-03-23 | 2016-06-01 | 常州耀辉新材料科技有限公司 | Environment-friendly acid-resistant high-temperature-resistant polymerized coating |
| CN106147460A (en) * | 2016-09-29 | 2016-11-23 | 中国科学院重庆绿色智能技术研究院 | A kind of heat insulating coatings |
| CN107189506A (en) * | 2017-07-05 | 2017-09-22 | 蚌埠市风驰滤清器有限公司 | Filter casing high adhesion force metallic paint and preparation method thereof |
| CN107325731A (en) * | 2017-07-05 | 2017-11-07 | 蚌埠市风驰滤清器有限公司 | Filter casing water resistance metallic paint and preparation method thereof |
| CN107641342A (en) * | 2017-08-30 | 2018-01-30 | 王珩 | One kind heat absorption anti-corrosion energy-saving coatings and preparation method thereof and application method |
| CN107880609A (en) * | 2017-11-11 | 2018-04-06 | 安徽国电能源设备工程有限公司 | A kind of boilers heated electrically pipeline coating |
| CN112724713A (en) * | 2020-12-03 | 2021-04-30 | 湖南格仑新材股份有限公司 | Preparation method of antibacterial anticorrosive paint |
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| CN103087558B (en) | 2016-04-20 |
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