CN106673460A - Method for increasing brightness and refractive index of lead-free crystalline glass - Google Patents
Method for increasing brightness and refractive index of lead-free crystalline glass Download PDFInfo
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- CN106673460A CN106673460A CN201710033919.4A CN201710033919A CN106673460A CN 106673460 A CN106673460 A CN 106673460A CN 201710033919 A CN201710033919 A CN 201710033919A CN 106673460 A CN106673460 A CN 106673460A
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- crystal glass
- refractive index
- brightness
- glass
- leadless
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
- C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0009—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing silica as main constituent
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
The invention discloses a method for increasing the brightness and refractive index of lead-free crystalline glass, belonging to the technical field of the research and development of the lead-free crystalline glass. The method comprises the steps of soaking finished lead-free crystalline glass into high-temperature fused salt containing K and Li in the later preparation period of the lead-free crystalline glass, and exchanging Na ions on a surface layer of the lead-free crystalline glass with K ions and Li ions which have high refractive indexes and are capable of increasing the luster of the glass to change surface components of the glass, so as to increase the brightness and refractive index of the lead-free crystalline glass. By utilizing the method for increasing the brightness and refractive index of the lead-free crystalline glass, the luster and the brightness of the glass can be effectively increased by 10%-20%, and the refractive index of the lead-free crystalline glass can be effectively increased by 0.05-0.1, so that the brightness and refractive index of the lead-free crystalline glass can be effectively increased without increasing the raw material coat of the glass.
Description
Technical field
The invention belongs to leadless crystal glass research and development technology field, leadless crystal glass brightness and folding are specifically improved
The method for penetrating rate.
Background technology
General crystal glass is all the lead tolerance just excellent optical property of acquisition higher, substantial amounts of for decorating and tableware device
Ware, its feature is have preferable matter double infection, and the refractive index of light is high, and dispersion is big, and fusion temperature is low, and due to oxidation lead content
Height, its fusion temperature is low, and the content of usual PbO is by mass percentage between 24-40%.
But containing lead crystal glass due to there is lead tolerance higher, and dissolution problem occurs in use, have impact on
Health, additionally, lead crystal glass in melting process be volatized into air after caused various in human body suction body
Disease.
Leadless crystal glass is will to be replaced by other yuan pollution-free, without dissolution problem containing the lead element in lead crystal glass
Element, makes the glass being made in addition to all characteristics for possessing lead crystal glass, the harmful element such as not leaded, arsenic, in making production process
The health of workman is ensured.
At present, the method for improving the brightness of leadless crystal glass gloss and refractive index is mainly utilized in being added in glass ingredient
The oxide of glass refraction, such as Li can be improved2O、TiO2、BaO、SrO、ZnO、ZrO2Deng, and can to improve glassy lustre bright
The K of degree2The oxides such as O, BaO, SrO.But this kind of method needs to add more oxide content, cost of material in glass ingredient
Increase, and improve BaO, TiO2Deng more serious to kiln refractory material and erosion of electrode, glass quality is caused to be deteriorated, TiO2Easily
Cause glass to produce and yellow is presented, the problems such as have impact on whiteness.
Therefore, seek a kind of abandoning and as above add the mode of refraction oxide that can improve in glass ingredient, it is unleaded to improve
The method of crystal glass brightness and refractive index turns into the active demand of this area.
The content of the invention
The present invention devises the method for improving leadless crystal glass brightness and refractive index to solve the above problems, and passes through
Improve glass surface, raising or supplement can improve the brightness of leadless crystal glass gloss and refractive index K ions and Li ion exchanges
Na ions, can make that the gloss brightness of glass effectively improves 10-20% and refractive index value effectively improves 0.05-0.1, while of the invention
Method can also improve the damage resistant index on crystal glass surface, and certain protective effect is played to crystal glass, can also reduce
Production cost, improves glass quality and quality.
The technical solution adopted by the present invention is：A kind of method for improving leadless crystal glass brightness and refractive index, key exists
In：A kind of method for improving leadless crystal glass brightness and refractive index, it is critical only that：This method is to by leadless crystal glass
The post processing that the leadless crystal glass finished product after cutting grinding and polishing operation in production technology is carried out, the post processing includes following step
Suddenly：
A, by leadless crystal glass finished product be immersed in 400 DEG C of -480 DEG C of fused salts containing K and Li process.
Wherein, described fused salt is arranged in fused salt groove, and the fused salt groove is located at the annealing that leadless crystal glass cuts grinding and polishing
Area, based on this, soak time is 5-15min in step A.
Further, also include in described post-processing step：
B, by the leadless crystal glass after step A carry out again cooling annealing be cleaned by ultrasonic.
Wherein, containing K and Li 400 DEG C of described -480 DEG C of fused salts include：LiCl、KCl、KNO3And NaCl, wherein
LiCl+KCl+KNO3Weight/mass percentage composition for 80-100%, NaCl weight/mass percentage composition be 0-20%.
Preferably, described LiCl+KCl+KNO3Weight/mass percentage composition be 85%-95%.
Preferably, described KCl+KNO3Weight/mass percentage composition be 50-70%.
Wherein, the weight/mass percentage composition composition of described leadless crystal glass is SiO240-60%, Al2O30-2%,
CaO 1-3%, Na2O 9-12.5%, K2O 1-3%, TiO25-15%, BaO 15-20%, ZnO3-5%, Sb2O3 0.2-
1%.
Preferably, the weight/mass percentage composition composition of described leadless crystal glass is：SiO251%th, Al2O30.5%th,
CaO 2.2%, MgO 0.5%, Na2O 10.5%, K2O 3%, TiO212%th, BaO 15%, ZnO 5%, Sb2O30.8%.
The beneficial effects of the present invention are：
1st, the present invention produces rear end in leadless crystal glass, i.e., after cutting grinding and polishing is completed.Setting fills high temeperature chemistry and melts
Salt slot device, after finished product leadless crystal glass enters the high temeperature chemistry fused salt slot device, the high temeperature chemistry fused salt slot device
The high temperature that will be melted contains Li+Fused salt and K+Fused salt is heated to suitable temperature, high temperature is contained Li+Li in fused salt+And K+In fused salt
K+The Na on displacement leadless crystal glass surface+, leadless crystal glass layer is formed on crystal glass surface；Annealed through supercooling again
It is cleaned by ultrasonic, as final leadless crystal glass product.The present invention and using other raising crystal glass brightness and refraction
Method is compared, it is not necessary to improve the application cost of glass raw material and expensive oxide, you can the gloss brightness of glass is effectively carried
10-20% high and refractive index value effectively improve 0.05-0.1, while against expectation, this method can also improve crystal glass table
The damage resistant index in face, certain protective effect is played to crystal glass, it is seen then that of the invention while production cost is reduced,
Improve glass quality and quality.
It is in thermal cycle ion and application for a patent for invention CN1410376A describes a kind of lens material of graded index
In stove of exchanging, thallium ion in carrying out glass at a temperature of 500-600 degree with sylvite mutually diffuses to form refraction with potassium ion
Gradient, swap time is for 60-120h.This has larger difference with the present invention, and the present invention is after leadless crystal glass preparation
Phase, the leadless crystal glass of finished product is immersed in the high-temperature molten salt containing K and Li, in temperature of molten salt be 400 DEG C -480 DEG C, when
Between 5-15min complete.Purpose is the K ions and Li ion exchange Na ions that use can improve glass brightness and refractive index, it is seen then that this
Application is different from the principle of application for a patent for invention CN1410376A.
2nd, leadless crystal glass composition of the invention is (wt%)：SiO240-60%, Al2O30-2%, CaO 1-3%,
Na2O 9-12.5%, K2O 1-3%, TiO25-15%, BaO 15-20%, ZnO3-5%, Sb2O30.2-1%.Glass Transition
Temperature Tg be 520 DEG C of points, glass transition temperature Ts be 600 DEG C, the present invention in, can glass transition point temperature below realize from
Son is exchanged, so the temperature of molten salt required for the invention is between 400 DEG C -480 DEG C.
Specific embodiment
With reference to embodiment, the present invention is described in detail.
Embodiment 1
Leadless crystal glass chemical composition is by percentage to the quality：SiO251%th, Al2O30.5%th, CaO 2.2%, MgO
0.5%th, Na2O 10.5%, K2O 3%, TiO212%, BaO 15%, ZnO 5%, Sb2O30.8%.The forming of glass cuts
It is that in 400 DEG C of high temeperature chemistry fused salt grooves, chemical fused salt mass percent is K to enter temperature after grinding and polishing+：Li+=7:3, soak time
Insulation 15min, is cleaned by ultrasonic subsequently into annealing, and its performance indications is as shown in embodiment 1 in table 1.
Embodiment 2
Leadless crystal glass chemical composition is by percentage to the quality：SiO251%th, Al2O30.5%th, CaO 2.2%, MgO
0.5%th, Na2O 10.5%, K2O 3%, TiO212%, BaO 15%, ZnO 5%, Sb2O30.8%.The forming of glass cuts
It is that in 430 DEG C of high temeperature chemistry fused salt grooves, chemical fused salt mass percent is K to enter temperature after grinding and polishing+：Li+=6:4, soak time
Insulation 8min, is cleaned by ultrasonic subsequently into annealing, and its performance indications is as shown in embodiment 2 in table 1.
Embodiment 3
Leadless crystal glass chemical composition is by percentage to the quality：SiO251%th, Al2O30.5%th, CaO 2.2%, MgO
0.5%th, Na2O 10.5%, K2O 3%, TiO212%, BaO 15%, ZnO 5%, Sb2O30.8%.The forming of glass cuts
It is that in 480 DEG C of high temeperature chemistry fused salt grooves, chemical fused salt mass percent is K to enter temperature after grinding and polishing+：Li+=7:3, soak time
Insulation 5min, is cleaned by ultrasonic subsequently into annealing, and its performance indications is as shown in embodiment 3 in table 1.
Embodiment 4
Leadless crystal glass chemical composition is by percentage to the quality：SiO251%th, Al2O30.5%th, CaO 2.2%, MgO
0.5%th, Na2O 10.5%, K2O 3%, TiO212%, BaO 15%, ZnO 5%, Sb2O30.8%.The forming of glass cuts
It is that in 400 DEG C of high temeperature chemistry fused salt grooves, chemical fused salt mass percent is K to enter temperature after grinding and polishing+：Li+=5:5, soak time
Insulation 15min, is cleaned by ultrasonic subsequently into annealing, and its performance indications is as shown in embodiment 4 in table 1.
Embodiment 5
Leadless crystal glass chemical composition is by percentage to the quality：SiO251%th, Al2O30.5%th, CaO 2.2%, MgO
0.5%th, Na2O 10.5%, K2O 3%, TiO212%, BaO 15%, ZnO 5%, Sb2O30.8%.The forming of glass cuts
It is that in 450 DEG C of high temeperature chemistry fused salt devices, chemical fused salt mass percent is K to enter temperature after grinding and polishing+：Li+=7:3, during immersion
Between be incubated 12min, subsequently into annealing be cleaned by ultrasonic, its performance indications is as shown in embodiment 5 in table 1.
Embodiment 6
Leadless crystal glass chemical composition is by percentage to the quality：SiO251%th, Al2O30.5%th, CaO 2.2%, MgO
0.5%th, Na2O 10.5%, K2O 3%, TiO212%, BaO 15%, ZnO 5%, Sb2O30.8%.The forming of glass cuts
It is that in 450 DEG C of high temeperature chemistry fused salt devices, chemical fused salt mass percent is K to enter temperature after grinding and polishing+：Li+：Na+=6:3:1,
Soak time is incubated 12min, is cleaned by ultrasonic subsequently into annealing, and its performance indications is as shown in embodiment 6 in table 1.
Comparative example
Leadless crystal glass chemical composition is by percentage to the quality：SiO251%th, Al2O30.5%th, CaO 2.2%, MgO
0.5%th, Na2O 10.5%, K2O 3%, TiO212%, BaO 15%, ZnO 5%, Sb2O30.8%.Glass profit routine
Prepared by leadless crystal glass production technology, got product after shaping cutting grinding and polishing, and its performance indications is as shown in table 1.
Table 1
| Refractive index raising value | Glossiness (reflection) is relative to improve (%) | |
| Embodiment 1 | 0.064 | 12 |
| Embodiment 2 | 0.08 | 16 |
| Embodiment 3 | 0.1 | 20 |
| Embodiment 4 | 0.05 | 10 |
| Embodiment 5 | 0.085 | 15 |
| Embodiment 6 | 0.08 | 14 |
| Comparative example | Refractive index 1.62 | 8% |
By upper table, it is apparent that the present invention can improve unleaded crystalloid by improving glass surface, raising or supplement
Glassy lustre brightness and refractive index K ions and Li ion exchange Na ions, can make the gloss brightness of glass effectively improve 10-20%
And refractive index value effectively improves 0.05-0.1.At the same time, the leadless crystal glass that we also prepare to the inventive method is scratch-resistant
Hinder degree to be tested, experiment shows that this method plays crystal glass certain protective effect, it is seen then that the present invention is being reduced
While production cost, glass quality and quality are improved.
Claims (8)
1. a kind of method for improving leadless crystal glass brightness and refractive index, it is characterised in that：This method is to by unleaded crystalline substance
The post processing that the leadless crystal glass finished product after cutting grinding and polishing operation in matter process of glass is carried out, the post processing is included such as
Lower step：
A, by leadless crystal glass finished product be immersed in 400 DEG C of -480 DEG C of fused salts containing K and Li process.
2. a kind of method for improving leadless crystal glass brightness and refractive index according to claim 1, it is characterised in that：Institute
The fused salt stated is arranged in fused salt groove, the fused salt groove be located at leadless crystal glass cut grinding and polishing annealed zone, based on this, step A
Middle soak time is 5-15min.
3. a kind of method for improving leadless crystal glass brightness and refractive index according to claim 1, it is characterised in that：Institute
Also include in the post-processing step stated：
B, by the leadless crystal glass after step A carry out again cooling annealing be cleaned by ultrasonic.
4. a kind of method for improving leadless crystal glass brightness and refractive index according to claim 1, it is characterised in that：Institute
Containing K and Li 400 DEG C of -480 DEG C of fused salts stated include：LiCl、KCl、KNO3And NaCl, wherein LiCl+KCl+KNO3Matter
Amount percentage composition is 0-20% for the weight/mass percentage composition of 80-100%, NaCl.
5. a kind of method for improving leadless crystal glass brightness and refractive index according to claim 4, it is characterised in that：Institute
The LiCl+KCl+KNO for stating3Weight/mass percentage composition be 85%-95%.
6. a kind of method for improving leadless crystal glass brightness and refractive index according to claim 4, it is characterised in that：Institute
The KCl+KNO for stating3Weight/mass percentage composition be 50-70%.
7. a kind of method for improving leadless crystal glass brightness and refractive index according to claim 1, it is characterised in that：Institute
The weight/mass percentage composition composition of the leadless crystal glass stated is SiO240-60%, Al2O30-2%, CaO 1-3%, Na2O 9-
12.5%th, K2O 1-3%, TiO25-15%, BaO 15-20%, ZnO3-5%, Sb2O30.2-1%.
8. a kind of method for improving leadless crystal glass brightness and refractive index according to claim 1, it is characterised in that：Institute
The weight/mass percentage composition of the leadless crystal glass stated is constituted：SiO251%th, Al2O30.5%th, CaO 2.2%, MgO
0.5%th, Na2O 10.5%, K2O 3%, TiO212%th, BaO 15%, ZnO 5%, Sb2O30.8%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710033919.4A CN106673460A (en) | 2017-01-18 | 2017-01-18 | Method for increasing brightness and refractive index of lead-free crystalline glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710033919.4A CN106673460A (en) | 2017-01-18 | 2017-01-18 | Method for increasing brightness and refractive index of lead-free crystalline glass |
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| CN106673460A true CN106673460A (en) | 2017-05-17 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103524042A (en) * | 2013-09-24 | 2014-01-22 | 河北省沙河玻璃技术研究院 | Environment-friendly type high-transmission high-refractivity crystalline glass and preparation method thereof |
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2017
- 2017-01-18 CN CN201710033919.4A patent/CN106673460A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103524042A (en) * | 2013-09-24 | 2014-01-22 | 河北省沙河玻璃技术研究院 | Environment-friendly type high-transmission high-refractivity crystalline glass and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李修建编著: "《光计算技术基础》", 31 August 2013 * |
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