CN101723596A - Lead-free glass powder for high-temperature resistant coating and preparation method thereof - Google Patents
Lead-free glass powder for high-temperature resistant coating and preparation method thereof Download PDFInfo
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- CN101723596A CN101723596A CN200810218863A CN200810218863A CN101723596A CN 101723596 A CN101723596 A CN 101723596A CN 200810218863 A CN200810218863 A CN 200810218863A CN 200810218863 A CN200810218863 A CN 200810218863A CN 101723596 A CN101723596 A CN 101723596A
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- lead
- glass powder
- free glass
- resistant coating
- temperature resistant
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Abstract
The invention discloses a lead-free glass powder for a high-temperature resistant coating, which comprises the following components by weight percent: 35-45% of phosphorus pentoxide, 7-15% of boron oxide, 20-30% of aluminium oxide and 10-35% of alkali metal oxide. The method for preparing the lead-free glass powder for the high-temperature resistant coating comprises the following steps: a) weighing all the raw materials according to the weight percents of the components, and fully and evenly mixing the raw materials; b) placing the mixed materials in the step a) into a quartz crucible, using an electric furnace for heating to 1000-1200 DEG C, keeping the temperature for 30-90min, and obtaining glass liquid; c) pouring the glass liquid into a sheeting machine for pressing into thin sheet-like glass; and d) arranging the thin sheet-like glass into a ball mill for ball milling, and screening by a 400-mesh sieve, thereby obtaining the lead-free glass powder. The invention aims at overcoming the shortcomings of the prior art and providing the lead-free glass powder for the high-temperature resistant coating, which has the advantages of low softening temperature, good adhesion, good chemical stability, low manufacturing cost and strong deliquescence resistance.
Description
Technical field
The present invention relates to a kind of lead-free glass powder that is used for high-temperature resistant coating, the invention still further relates to a kind of method for preparing this lead-free glass powder.
Background technology
Often need in the existing high-temperature resistant coating to add a certain amount of glass powder with low melting point, play the hardness that strengthens coating, increase coating sticking power, the effect that improves the freedom from cracking performance of coating.In glass powder with low melting point, leaded seal glass has series of characteristics such as softening temperature is low, thermal expansivity suitable, chemical stability is good, the sealing-in resistance to air loss is good, is having a wide range of applications aspect the eutectic sealing-in.The leaded seal glass of preparation is often selected PbO-ZnO-B for use both at home and abroad
2O
3System, PbO quality percentage composition is about 75% in most of low-melting point sealing glass, because lead is toxic substance, the heavy metal lead that contains in this series products can cause serious harm to environment and human body, in the manufacturing processed of lead glass powder, the problem that has the healthy aspect of labor safety, simultaneously, use back depleted glass to meet the erosion of water, acid rain and atmosphere etc., lead ion stripping gradually, the severe contamination that causes groundwater quality can bring serious threat to ecotope and mankind itself's safety.
Making the component of the low fusibleness of glass can be some heavy metal ion, contains the ion of 18 or more electron rich outermost electronic shell, also has yielding heavy ion and with the positively charged ion of little electric charge, so people use As
2O
3, Bi
2O
3, V
2O
5, SnO, P
2O
5Replace PbO in the glass Deng oxide compound, along with the mankind's environmental consciousness is more and more stronger, nuisanceless low-melting-point glass such as unleaded and products thereof will obtain more and more human consumers' favor.Simultaneously, according to the specified requirement of the RoHS of European Union, will ban use of the material of heavy metals such as containing Pb, Hg, Cd in 2008, national governments all encourage the research and development of heavy metal free (as Pb) low melting glass powder material.
Under this background, press for to develop and to substitute general in the past leaded low melting glass powder material, can satisfy the service requirements in high-temperature resistant coating at aspects such as low softening temperature, thermal expansivity, outward appearance light, binding property, chemical stability, anti-deliquescence, and have cheaper manufacturing cost.
Summary of the invention
The objective of the invention is provides a kind of softening temperature low in order to overcome weak point of the prior art, and binding property is good, and chemical stability is good, low cost of manufacture, the lead-free glass powder that is used for high-temperature resistant coating that anti-deliquescence is strong;
Another object of the present invention provides a kind of method for preparing above-mentioned lead-free glass powder.
In order to achieve the above object, the present invention adopts following scheme:
A kind of lead-free glass powder that is used for high-temperature resistant coating comprises following component by weight percentage:
Vanadium Pentoxide in FLAKES 35-45%
Boron oxide 7-15%
Aluminium sesquioxide 20-30%
Alkalimetal oxide 10-35%.
Aforesaid a kind of lead-free glass powder that is used for high-temperature resistant coating, wherein said alkalimetal oxide are two kinds or two or more compositions in Lithium Oxide 98min, sodium oxide, the potassium oxide.
Aforesaid a kind of lead-free glass powder that is used for high-temperature resistant coating, it comprises that also weight percent is that silicon-dioxide and the weight percent of 0-5% is the calcium oxide of 0-1%.
Aforesaid a kind of lead-free glass powder that is used for high-temperature resistant coating, the thermal expansivity of this lead-free glass powder is 130-180 * 10
-7/ ℃, sintering temperature is 450-550 ℃.
A kind ofly prepare the above-mentioned method that is used for the lead-free glass powder of high-temperature resistant coating, it may further comprise the steps:
A, take by weighing each raw material according to the weight percent of each component, thorough mixing is even;
B, the compound among the step a is put into quartz crucible, use electric furnace to be warmed to 1000-1200 ℃ after, insulation 30～90min obtains glass metal;
C, glass metal is poured into tabletting machine be pressed into flake glass;
D, with the flake glass ball mill ball milling of packing into, cross 400 mesh sieves, promptly get lead-free glass powder of the present invention.
Aforesaid method, wherein the sieve described in the steps d is the stainless steel testing sieve.
In sum, beneficial effect of the present invention:
Do not contain the material that can pollute and endanger environment in each component of the present invention, do not contain noble metal yet.Simultaneously, this phosphate low-melting-point point glass chemistry good stability, softening point temperature are low, the preparation complete processing is simple, the scope of application is wider, has good anti-deliquescence.
Embodiment
Below in conjunction with embodiment the present invention is described further:
Embodiment 1
Comprise in the lead-free glass powder of the present invention:
1, Vanadium Pentoxide in FLAKES 35%
2, boron oxide 7%
3, aluminium sesquioxide 28%
4, sodium oxide 20%
5, Lithium Oxide 98min 10%
Above-mentioned component materials thorough mixing is even; Put into quartz crucible then, after the use electric furnace was warmed to 1000-1200 ℃, insulation 30～90min obtained glass metal; Described glass metal is poured into tabletting machine be pressed into flake glass; With the flake glass ball mill ball milling of packing into, cross 400 purpose testing sieves, promptly get lead-free glass powder of the present invention.
Embodiment 2
Comprise in the lead-free glass powder of the present invention:
1, Vanadium Pentoxide in FLAKES 39%
2, boron oxide 7.5%
3, aluminium sesquioxide 27.1%
4, Lithium Oxide 98min 5.9%
5, silicon-dioxide 2.8%
6, sodium oxide 6.8%
7, potassium oxide 10.9%
Above-mentioned component materials thorough mixing is even; Put into quartz crucible then, after the use electric furnace was warmed to 1000-1200 ℃, insulation 30～90min obtained glass metal; Described glass metal is poured into tabletting machine be pressed into flake glass; With the flake glass ball mill ball milling of packing into, cross 400 purpose testing sieves, promptly get lead-free glass powder of the present invention.
Embodiment 3
Comprise in the lead-free glass powder of the present invention:
1, Vanadium Pentoxide in FLAKES 40%
2, boron oxide 7%
3, aluminium sesquioxide 25%
4, calcium oxide 0.7%
5, silicon-dioxide 3.3%
6, sodium oxide 10%
7, potassium oxide 14%
Above-mentioned component materials thorough mixing is even; Put into quartz crucible then, after the use electric furnace was warmed to 1000-1200 ℃, insulation 30～90min obtained glass metal; Described glass metal is poured into tabletting machine be pressed into flake glass; With the flake glass ball mill ball milling of packing into, cross 400 purpose testing sieves, promptly get lead-free glass powder of the present invention.
Embodiment 4
Comprise in the lead-free glass powder of the present invention:
1, Vanadium Pentoxide in FLAKES 42%
2, boron oxide 8%
3, aluminium sesquioxide 20%
4, Lithium Oxide 98min 7%
5, silicon-dioxide 2.5%
6, sodium oxide 9%
7, potassium oxide 11.5%
Above-mentioned component materials thorough mixing is even; Put into quartz crucible then, after the use electric furnace was warmed to 1000-1200 ℃, insulation 30～90min obtained glass metal; Described glass metal is poured into tabletting machine be pressed into flake glass; With the flake glass ball mill ball milling of packing into, cross 400 purpose testing sieves, promptly get lead-free glass powder of the present invention.
Embodiment 5
Comprise in the lead-free glass powder of the present invention:
1, Vanadium Pentoxide in FLAKES 45%
2, boron oxide 15%
3, aluminium sesquioxide 28%
4, Lithium Oxide 98min 5%
5, sodium oxide 5%
6, silicon-dioxide 2%
Above-mentioned component materials thorough mixing is even; Put into quartz crucible then, after the use electric furnace was warmed to 1000-1200 ℃, insulation 30～90min obtained glass metal; Described glass metal is poured into tabletting machine be pressed into flake glass; With the flake glass ball mill ball milling of packing into, cross 400 purpose testing sieves, promptly get lead-free glass powder of the present invention.
Lead-free glass powder among the embodiment 1-5 is carried out the mensuration of some routines, and its performance perameter sees Table 1:
Table 1 is the performance perameter of lead-free glass powder among the present invention
Do not contain the material that can pollute and endanger environment in each component in the lead-free glass powder of the present invention, do not contain noble metal yet.Simultaneously, this phosphate low-melting-point point glass chemistry good stability, softening point temperature are low, the preparation complete processing is simple, the scope of application is wider, has good anti-deliquescence.After using lead-free glass powder of the present invention to add in the high-temperature resistant coating, can obviously improve heatproof, the wear resisting property of coating, strengthen hardness, and can improve the freedom from cracking performance of coating as filler.
Claims (6)
1. lead-free glass powder that is used for high-temperature resistant coating comprises following component by weight percentage:
Vanadium Pentoxide in FLAKES 35-45%
Boron oxide 7-15%
Aluminium sesquioxide 20-30%
Alkalimetal oxide 10-35%.
2. a kind of lead-free glass powder that is used for high-temperature resistant coating according to claim 1, wherein said alkalimetal oxide are two kinds or two or more compositions in sodium oxide, potassium oxide, the Lithium Oxide 98min.
3. a kind of lead-free glass powder that is used for high-temperature resistant coating according to claim 1, it comprises that also weight percent is that silicon-dioxide and the weight percent of 0-5% is the calcium oxide of 0-1%.
4. according to claim 1 or 3 described a kind of lead-free glass powders that are used for high-temperature resistant coating, the thermal expansivity of this lead-free glass powder is 130-180 * 10
-7/ ℃, sintering temperature is 450-550 ℃.
5. one kind prepares the described method that is used for the lead-free glass powder of high-temperature resistant coating of claim 1, and it may further comprise the steps:
A, take by weighing each raw material according to the weight percent of each component, thorough mixing is even;
B, the compound among the step a is put into quartz crucible, use electric furnace to be warmed to 1000-1200 ℃ after, insulation 30～90min obtains glass metal;
C, glass metal is poured into tabletting machine be pressed into flake glass;
D, with the flake glass ball mill ball milling of packing into, cross 400 mesh sieves, promptly get lead-free glass powder of the present invention.
6. method according to claim 5, wherein the sieve described in the steps d is the stainless steel testing sieve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102188630A CN101723596B (en) | 2008-10-30 | 2008-10-30 | Lead-free glass powder for high-temperature-resistant coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102188630A CN101723596B (en) | 2008-10-30 | 2008-10-30 | Lead-free glass powder for high-temperature-resistant coating and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101723596A true CN101723596A (en) | 2010-06-09 |
| CN101723596B CN101723596B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102188630A Expired - Fee Related CN101723596B (en) | 2008-10-30 | 2008-10-30 | Lead-free glass powder for high-temperature-resistant coating and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113861838A (en) * | 2021-09-23 | 2021-12-31 | 华南理工大学 | Water-based organic silicon anticorrosive paint and preparation method thereof |
-
2008
- 2008-10-30 CN CN2008102188630A patent/CN101723596B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113861838A (en) * | 2021-09-23 | 2021-12-31 | 华南理工大学 | Water-based organic silicon anticorrosive paint and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN101723596B (en) | 2012-05-23 |
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Granted publication date: 20120523 Termination date: 20171030 |