CN1552650A - Lacte glass - Google Patents

Lacte glass Download PDF

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Publication number
CN1552650A
CN1552650A CNA031288391A CN03128839A CN1552650A CN 1552650 A CN1552650 A CN 1552650A CN A031288391 A CNA031288391 A CN A031288391A CN 03128839 A CN03128839 A CN 03128839A CN 1552650 A CN1552650 A CN 1552650A
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glass
weight
content
opacity
opal
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莲沼一雄
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SHANGHAI GAOYA GLASS CO Ltd
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SHANGHAI GAOYA GLASS CO Ltd
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Priority to CNA031288391A priority Critical patent/CN1552650A/en
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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
    • 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
    • C03C10/0036—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 SiO2, Al2O3 and a divalent metal oxide as main constituents

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)

Abstract

A milky glass without fluoride is prepared from SiO2 (35-60 wt.%), P2O5 (3.5-10), Al2O3 (5.5-15) and CaO (3.0-15). Its advantages are pure milk white, low smelting temp, and no environmental pollution.

Description

A kind of novel opal glass
Technical field
The present invention relates to the opal glass prescription, fluoride not can make production safety consciously, and opacity increases, and is a kind of opal glass prescription of watery fusion.
Background technology
In transparent glass, sneak into the different particle of optical index, make glass produce scattering of light.Perhaps in raw material, add some opaque microparticals, stir well evenly, reduce the light transmission rate of glass.The glass that two kinds of methods are produced is creamy white, and is referred to as opal glass.Opal glass has elegant in appearance, preserves characteristics such as stable, is widely used in fields such as container, tableware, material of construction.
Opal glass generally is divided into fluorochemical class opal glass, borosilicic acid salt opal glass, phosphoric acid salt opal glass.
The prescription of fluorochemical class opal glass records on Japanese kokai publication sho 62-52140 communique:
SiO 270 ~ 73 weight %
Fluorochemical 4 ~ 6 weight % (mainly from NaF, introducing fluorochemical).
Yet, under the situation of commercial scale production, fluorite (CaF 2), Sodium Silicofluoride (Na 2SiF 6), sodium fluoroaluminate (Na 3AlF 6) as raw material, when glass melting, have 10 ~ 50% waste gas containing fluoride to enter in the atmosphere approximately, atmosphere is polluted, be detrimental to health, harm the crops, lack security.
In addition, NaF and CaF 2Crystal formation speed, speed of separating out is very fast, under the situation with molten glass chilling, though also can form oyster white.But, because crystal formation speed, speed of separating out are too fast, being difficult to control, crystal is excessive, and crystallization phases is different with the coefficient of thermal expansion between the glassy phase, produces stress, easily causes glass fragmentation faced.
In addition, when glass cools, heavy-gravity molten glass is separated out NaF, CaF in a large number 2, in the glass structure, the network-like structure of silicon-oxy tetrahedron becomes big and the cavity.Thereby it is transparent that glass is lost, and causes opacity to change SiO 2Self also becomes and separates out easily, causes the physical strength of glass to descend.In other words, SiO 2Separate out, the crystal of separating out is different with the coefficient of thermal expansion of glassy phase on every side, separates out crystal and can crack on every side, and crackle is a critical defect concerning glasswork.
The prescription of borosilicic acid salt opal glass opens as the spy that clear 50-55611, spy open clear 61-247642, the spy opens shown in clear 63-265841 number, general SiO 2, B 2O 3Content higher, P 2O 5, CaO content less, each composition forms opal glass by certain per distribution ratio.
Yet, in the borosilicic acid salt opal glass composition, Al 2O 3Content because of being difficult to control, always produce some problems, as opacity is not high, opacity is inhomogeneous etc.
For example, the spy open clear 50-55611 communique the above, Al 2O 3Content when surpassing 5 weight %, can hinder glass to generate oyster white, it is not high just to form opacity yet.And the spy opens in the above prescription of clear 61-247642 communique, Al 2O 3Content when surpassing 2.7 weight %, with the temperature below 1380 ℃, the fusion difficulty, because of glass viscosity is too high, difficulty is produced in moulding.
In addition, borosilicate glass as the spy open clear 50-55611 communique described, in general water tolerance is relatively poor, reduces SiO again 2It is unrealistic that content just seems, net result is that the solvent temperature of glass is up to 1450 ~ 1580 ℃.The glass dissolving needs a large amount of energy, causes production cost to improve.Also have, glass solvent temperature height, glass metal strengthens the erosion of kiln refractory brick, influences the work-ing life of kiln.
The spy opens the phosphoric acid salt opal glass that is proposed on the clear 50-51513 communique, just reduces B 2O 3Content, improve P 2O 5Content, with this opal glass that forms.Yet the opacity of this opal glass is low, because (wavelength 340 ~ 700nm), it is low more good more to require as the light transmission rate of one of oyster white characteristic index.And in the phosphoric acid salt opal glass, Al 2O 3, B 2O 3Content low, the light transmission rate of wavelength 340 ~ 700nm proves that up to 4 ~ 13% its opacity is low.The phosphoric acid salt opal glass also exists poor chemical stability in addition, problems such as coefficient of thermal expansion height.
Summary of the invention
The opal glass prescription that the present invention proposes is exactly a fluoride not consciously, makes production safety convenient, and is pollution-free to atmosphere, and human body, farm crop are not had harm, glass opacity height, and can dissolution in low temperature, be a kind of opal glass of environment-friendly type.
Opal glass prescription of the present invention: SiO 235 ~ 60 weight %, P 2O 53.5 ~ 10 weight %, Al 2O 35.5 ~ 15 weight %, CaO 3.0 ~ 15 weight %.
Embodiment
By the prescription of above proportioning, can solve the variety of issue of the existence in the traditional mode of production.
Below just in the prescription each major ingredient describe.
SiO 2
SiO 2Be the major ingredient of glass network shape structure, the non-crystalline state of glass structure, the characteristic that some of glass are very valuable: transparent etc. as, physical strength, conformability, gloss all is SiO 2Bringing into play important effect.
Thereby SiO 2Content must be controlled in 35 ~ 65 weight % scopes.If SiO 2Contain quantity not sufficient 35 weight %, the conformability of glass and water resistance just obviously descend so.And SiO 2Content surpass 65 weight %, the solvent temperature of glass is just high so, needs the high temperature more than 1400 ℃, one of purpose of the present invention, dissolution in low temperature just can't reach.
Take all factors into consideration SiO from the characteristics such as conformability of glass, all respects such as solvent temperature of glass 2Content be controlled in 40 ~ 60 weight % (the not containing 60 weight %) scope to be comparatively ideal, to be controlled in 45 ~ 55 weight % (the not containing 55 weight %) scope then even more ideal.
Generally from the conformability that prevents glass, the viewpoint that water resistance descends, think SiO 2Content at least will be in 60 ~ 65 weight % scopes.But the present invention by with prescription in the mutual combination of other compositions, can avoid the conformability of glass to descend.Reduce SiO 2The meaning of content can be described as and enlarged SiO 2The span of control of content.
P 2O 5With SiO 2Phase-splitting promotes the glass opacification.But only depend on P 2O 5With SiO 2Phase-splitting, opacity is not enough, even increase P again 2O 5Content, can not improve opacity.
P 2O 5Match with other compositions of prescription, with SiO 2Effectively phase-splitting, it is different to form optical index, and the uniform phase that distributes can obtain the quality milk white glass like this.
In the prescription of the present invention, P 2O 5Content must be controlled in 3.5 ~ 10 weight % scopes.As P 2O 5Contain quantity not sufficient 3.5 weight %, the opacity of glass is not high.As P 2O 5Content surpass 10 weight %, can cause the oyster white inequality, influence the attractive in appearance of glass.
Take all factors into consideration P from opacity and outward appearance two aspects 2O 5Content be controlled in 4 ~ 10 weight % scopes to be comparatively ideal, to be controlled in 4.5 ~ 8 weight % scopes then even more ideal.
The spy opens clear 63-265841 number record, P 2O 5Content can only be controlled at about 2.5 weight % P 2O 5Content too much, can quicken the erosion of glass to kiln refractory brick, shorten kiln work-ing life.But in the prescription of the present invention, P 2O 5Even content surpass 2.5 weight %, do not find the problems referred to above yet.
Al 2O 3
In prescription of the present invention, Al 2O 3Content must be controlled in 5.5 ~ 15 weight % scopes.Al 2O 3In the chemical stability that reduces glass, coefficient of thermal expansion, also greatly improved SiO 2With the dispersion stabilization of other compositions, make the weave construction of glass balanced more.The present invention can improve the opacity of opal glass, and makes opacity more even.
Al 2O 3Content must be controlled in 5.5 ~ 15 weight % scopes.As Al 2O 3Contain quantity not sufficient 5.5 weight %, then can't improve SiO 2Dispersion stabilization with other compositions.And Al 2O 3Content surpass 15 weight %, it is very high that the solvent temperature of glass will become, opacity descends on the contrary.
Take all factors into consideration Al from each side such as dispersion stabilization and glass solvent temperatures 2O 3Content be controlled in 5.7 ~ 10 weight % scopes to be comparatively ideal, to be controlled in 6 ~ 9 weight % scopes then even more ideal.
In the prescription of the present invention, Al 2O 3Even content surpass 5 weight %, can not occur the spy yet and hold that said serious obstruction glass generates oyster white on the clear 50-55611 communique.The spy opens that said 1380 ℃ of following temperature are difficult to situations such as dissolving, viscosity height, operations for forming difficulty on the clear 61-247642 communique.
CaO
In prescription of the present invention, the content of CaO must be controlled in 3 ~ 15 weight ranges.CaO can reduce the viscosity of molten glass, can improve opacity again.
In the present invention, the content of CaO such as less than 3 weight %, the opacity of glass is low.And the content of CaO surpasses 15 weight %, and the solvent temperature of glass can uprise, and it is big that thermal expansivity becomes.
Take all factors into consideration from each side such as opacity and glass solvent temperatures, it is comparatively ideal that the content of CaO is controlled in 5 ~ 14 weight % scopes, is controlled in 6 ~ 13 weight % scopes then even more ideal.
The spy opens on the clear 63-265841 communique existing the record, and the content of CaO can only be controlled at about 1.5 weight %, and the content of CaO is too much, can increase the erosion of glass metal to kiln refractory brick, shortens kiln work-ing life.But in the present invention, the glass solvent temperature is low, even the content of CaO surpasses 1.5 weight %, does not also find the problems referred to above.But if the material of kiln refractory brick own is not good enough, prescription of the present invention also can cause erosion to refractory brick.
Other compositions of glass
In the prescription of the present invention, also should comprise following composition.
Na 2O
Na 2The content of O preferably is controlled in 4 ~ 15 weight % scopes.Na 2What of O addition should be decided according to reducing the required amount of glass solubleness.
Na 2The content of O is as less than 4 weight %, no additive effect.And Na 2The content of O surpasses 15 weight %, can cause the glass conformability low, and it is big that thermal expansivity becomes.
Take all factors into consideration Na from the each side such as conformability of additive effect and glass 2The content of O is controlled in 5 ~ 10 weight % scopes the most desirable.
K 2O
K 2The content of O preferably is controlled in 1 ~ 10 weight % scope.K 2O can increase the opacity of glass, makes glass solvent temperature curve become soft, enlarges range of working temperature.And because K 2O is basic oxide, can suppress the activity of sodium ion in the glass.
K 2The content of O is as less than 1 weight %, no additive effect.And K 2The content of O surpasses 10 weight %, and the glass solvent temperature uprises.
Take all factors into consideration Na from the each side such as conformability of additive effect and glass 2O content is controlled in 2 ~ 5 weight % scopes the most desirable.
ZnO
The content of ZnO preferably is controlled in 2 ~ 10 weight % scopes.Add a spot of ZnO, can bring into play the effect of fluxing, increase the solvability of glass, improve opacity, reduce coefficient of thermal expansion, can also improve the conformability of glass.
The content of ZnO is as less than 1 weight %, no additive effect.And the content of ZnO surpasses 10 weight %, and glass can lose slipperiness, becomes coarse.
Take all factors into consideration from the each side such as solvability of additive effect and glass, the content of ZnO preferably is controlled in 2 ~ 7 weight % scopes.
B 2O 3
B 2O 3Content, preferably be controlled in 1 ~ 15 weight % scope.Add a spot of B 2O 3, can bring into play the effect of fluxing, increase the solvability of glass, improve opacity, reduce coefficient of thermal expansion, can also improve the conformability of glass.
B 2O 3Content, as less than 1 weight %, no additive effect.And surpass 15 weight %, can reduce the conformability of glass.
Take all factors into consideration B from the each side such as conformability of additive effect and glass 2O 3Content preferably be controlled in 3 ~ 10 weight % scopes.
TiO 2
TiO 2Content, preferably be controlled in 0 ~ 7 weight % (the not containing 0 weight %) scope.
Add a spot of TiO 2, can improve the opacity of glass, increase the solvability of glass, reduce coefficient of thermal expansion, can also improve the conformability of glass.
TiO 2Can also strengthen Al 2O 3Dissemination, improve dispersion effect.
TiO 2Content, preferably be controlled in 0 ~ 7 weight % (the not containing 0 weight %) scope.This is because TiO 2Content as surpassing 7 weight %, glass can be colored, and is yellow.
Take all factors into consideration TiO from the each side such as solvability of additive effect and glass 2Content be controlled in 1 ~ 5 weight % scope ideal.
Other glass compositions
Can be from MgO, BaO, SrO, Li 2O, ZrO 2, Sb 2O 3, CS 2O, SnO 2, select among the PbO a kind ofly at least, several at most oxide compounds join in the prescription of the present invention.
MgO can reduce the coefficient of thermal expansion of glass, and BaO, SrO can improve the solvability of glass, and more satisfactory addition is in 0 ~ 10 weight % (the not containing 0 weight %) scope.
Surpass 10 weight % as content, MgO can reduce the solvability of glass, and BaO, SrO then can make the coefficient of thermal expansion of glass significantly raise.As MgO and BaO or SrO merging use, then effect is preferable, can improve the solvability of glass, can reduce the coefficient of thermal expansion of glass again, is very suitable to the present invention.
Li 2The fluxing action of O is best, and it is also very suitable to join in the prescription of the present invention, and addition preferably is controlled in 0 ~ 2 weight % (the not containing 0 weight %) scope.Li 2The content of O can reduce the opacity of glass as surpassing 2 weight %.
ZrO 2Can significantly improve the oyster white of glass, improve the chemical stability of glass, it is also very suitable to join in the prescription of the present invention, and addition preferably is controlled in 0 ~ 5 weight % (the not containing 0 weight %) scope.ZrO 2Content as surpassing 5 weight %, can reduce the opacity of glass on the contrary.
Sb 2O 3The energy froth breaking, CS 2O, SnO 2, PbO can improve the opacity of glass, improves the chemical stability of glass.
The optimum range of addition is Sb respectively 2O 3At 0 ~ 1 weight % (not containing 0 weight %), CS 2O is at 0 ~ 10 weight % (not containing 0 weight %), SnO 2At 0 ~ 10 weight % (not containing 0 weight %), PbO is in 0 ~ 10 weight % (not containing 0 weight %) scope.
Sb 2O 3Content as surpassing 1 weight %, can reduce defoaming effect.SnO 2Content as surpassing 10 weight %, the softening temperature of glass can significantly rise.CS 2The content of O, PbO can cause that as surpassing 10 weight % coefficient of thermal expansion rises, and opacity descends, degradation problem under the conformability.
Except that above-mentioned oxide compound, also can contain Nb in the prescription 5+, Ta 5+, W 6+, Mo 6+Etc. the multivalence oxide compound, can obtain the better properties effect like this.Can also in the glass composition, add tinting material, to reach required various tones.
For example, in the glass composition, add CO 2+, Cu 2+, Ni 2+, CO 3+, Cr 3+, Fe 3+, Mn 3+, Nb 3+, Pr 3+, Cr 6+Deng tinting material, the color of glass can be adjusted to needed color.
Below, the present invention is specified by example.
[example 1]
The glass formula of example 1 is shown in the 1st hurdle in the table 1.After each raw material blending, in dry mixer, to mix, mixing time is 1 hour, compound amounts to 200g.
At this moment, the form of alkalimetal oxide, alkaline earth metal oxide, carbonate compound preferably, P 2O 5The raw material form, CaHPO preferably 4, Ca (PO 3) 2, Ca 3(PO 4) 2, NaHPO 4
The admixtion that mixing is finished is packed in the platinum kettle, and in thermoelectric steam stove, with 1350 ~ 1400 ℃ of solvent temperatures, 1 ~ 2 hour condition of dissolution time is fused.During dissolving, glass is repeatedly stirred, glass is evenly melted with the platinum scoop.After this fining glass is poured on glass with on the stainless steel plate that heats again, sends into 550 ~ 600 ℃ annealing furnace cooling.
The opal glass that obtains after the glass formula fusion of the present invention, visual means is used in the judgement of glass opacity, carries out with following benchmark.
Excellent: the opacity height, glass is attractive in appearance.
In: in the opacity, inequality is arranged slightly.
Difference: opacity is low, and the transparency height is obviously uneven.
Opal glass after the annealing, sampling is carried out mirror ultrafinish, is carried out frosting, carries out observation analysis with portable type electron microscope (SEM) and analytical electron microscope, can see the 1st pattern P in the glass structure 2O 5-CaO particle distributes in a large number, the about 0.4 μ m of median size.
In glass structure, can also observe a large amount of TiO of the 2nd pattern 2-Al 2O 3Particle is evenly distributed, closely, the about 0.1 μ m of median size.
The 3rd pattern is at P 2O 5In-CaO the structure, non-crystalline material is distributing.The photo that portable electron microscope is captured is clearly illustrating the phase separation structure of opal glass of the present invention, arranges very closely neat.This did not have in the past, was by regulating SiO 2, P 2O 5, Al 2O 3, CaO content obtain.
Example 2 ~ 11
The same with example 1, the prescription of example 2 ~ 11 sees Table 1.Glass dissolving methods etc. are also the same with example 1.Produce the opal glass of example 2 ~ 11, and make opacity and judge.
Example 4,6,9,11, the softening point measurement standard is according to JISR-3104, and the bioassay standard of annealing point and stress point is according to JISR-3103, and the beam split rate is that the 150-20 type spectrophotometer that adopts Hitachi, Ltd. to produce records.The opal glass sample is the square of long 30mm * wide 30mm, and thickness is 5.0mm.
Wherein, example 6 is different with other example, is the liquid temperature of tested glass, in example 6, opal glass is further pulverized in the agate alms bowl, is ground into particle diameter glass powder between 0.2 ~ 0.6 μ m.Get the such powder of 3g and be placed on the platinum plate, in 750 ℃, 800 ℃, 850 ℃, 900 ℃, 950 ℃ electric stove, placed 20 hours respectively, the result shows that the crystallized temperature of the opal glass of example 6 is below 900 ℃.Can confirm the opal glass of example 6 thus, its liquid temperature bit is opened and is put down in writing on the clear 63-265841 communique, and the liquid temperature of opal glass is low in the past.
Comparative example 1 ~ 4
As shown in table 2, the prescription of comparative example 1 ~ 4 is different with prescription of the present invention, but the production method of opal glass is the same with example 1, and has carried out the judgement of opacity.Result of determination is also as shown in table 2, the opal glass of comparative example 1 ~ 4, and its transparency height, opacity is low, and is obviously uneven, poor performance attractive in appearance.
[table 1]
Embodiment
(forming unit weight %)
Form ??1 ??2 ??3 ??4 ??5 ??6 ??7 ??8 ??9 ??10 ??11
SiO 2 ??50.8 ??51.2 ??52.5 ??51.2 ??50.7 ??54.2 ??50.7 ??51.3 ??49.5 ??56.4 ??53.4
CaO ??14.0 ??10.4 ??10.7 ??10.4 ??10.3 ??6.1 ??10.3 ??10.4 ??10.0 ??5.2 ??6.0
MgO ??- ??3.7 ??3.8 ??3.7 ??- ??- ??- ??3.7 ??3.6 ??3.7 ??3.9
BaO ??- ??- ??- ??- ??3.9 ??3.9 ??- ??- ??- ??- ??-
SrO ??- ??- ??- ??- ??- ??- ??3.7 ??- ??- ??- ??-
Na 2O ??5.1 ??6.6 ??6.8 ??6.6 ??6.6 ??7.1 ??6.6 ??6.7 ??6.5 ??6.7 ??6.9
K 2O ??0.7 ??2.2 ??2.4 ??2.2 ??2.2 ??2.4 ??2.2 ??2.2 ??2.2 ??2.2 ??2.3
LiO 2 ??- ??- ??0.5 ??0.5 ??1.0 ??1.1 ??1.0 ??1.0 ??1.0 ??1.1 ??1.1
Al 2O 3 ??8.8 ??7.0 ??7.2 ??7.0 ??7.0 ??6.3 ??7.0 ??5.9 ??5.7 ??5.9 ??6.2
ZnO ??5.1 ??5.2 ??2.7 ??5.2 ??5.1 ??5.5 ??5.1 ??5.2 ??5.0 ??5.2 ??5.4
P 2O 5 ??4.4 ??5.2 ??5.3 ??5.2 ??5.1 ??5.2 ??5.1 ??5.9 ??5.7 ??6.0 ??6.2
B 2O 3 ??3.0 ??5.0 ??5.1 ??5.0 ??4.9 ??8.2 ??4.9 ??7.7 ??7.5 ??7.7 ??8.1
TiO 2 ??2.9 ??3.0 ??3.0 ??3.0 ??2.9 ??- ??2.9 ??- ??2.8 ??- ??-
ZrO 2 ??2.2 ??- ??- ??- ??- ??- ??- ??- ??- ??- ??-
Sb 2O 3 ??- ??0.5 ??- ??- ??0.5 ??- ??0.5 ??- ??0.5 ??- ??0.5
Opacity ??○ ??○ ??○ ??○ ??○ ??○ ??○ ??○ ??○ ??○ ??○
Softening temperature (℃) ??745 ??710 ??706 ??703
Annealing point (℃) ??560 ??528 ??534 ??525
Stress point (℃) ??519 ??496 ??492 ??484
Beam split is saturating ??0.18 ??0.02 ??0.06 ??0.05
Transmitance (%)
[table 2]
Comparative example
Form ????1 ????2 ????3 ????4 (forming unit weight %)
SiO 2 ????52.7 ????53.1 ????54.8 ????53
CaO ????14.5 ????14.6 ????15.1 ????14.7
MgO ????- ????- ????- ????-
BaO ????- ????- ????- ????-
Sro ????- ????- ????- ????-
Na 2O ????5.3 ????4.6 ????6.3 ????9.4
K 2O ????3.8 ????4.6 ????3.2 ????-
LiO 2 ????- ????- ????- ????-
Al 2O 3 ????5.3 ????9.2 ????9.5 ????9.3
ZnO ????5.3 ????5.4 ????5.6 ????5.4
P 2O 5 ????4.6 ????3.1 ????- ????2.3
B 2O 3 ????3.1 ????- ????- ????-
TiO 2 ????3.1 ????3.1 ????3.2 ????3.1
ZrO 2 ????2.3 ????2.3 ????2.3 ????2.3
S 2O 3 ????- ????- ????- ????-
Opacity ????× ????× ????× ????×
[invention effect]
Opal glass prescription of the present invention can reach not fluoride, and production safety is pollution-free to atmosphere, and the human body farm crop are not had harm, and glass opacity height, and energy dissolution in low temperature are a kind of opal glasses of environment-friendly type.
The opal glass that the application of the invention prescription is produced, to wavelength at the light permeable rate of light between 350～700nm in 0.02～0.18% scope, and the special opal glass of opening record produced in conventional processes on the clear 50-51513 communique, to wavelength at the transmittance of light between 350～700nm at least in 1～5% scope.Can confirm that thus opal glass of the present invention has splendid blocking effect to light such as ultraviolet rays.
The opal glass that the application of the invention prescription is produced, the softening temperature of glass, annealing point, the temperature of stress point is identical with soda-lime glass or lowly slightly a bit be fit to industrialized mass equally, and glass is suppressed, and the condition of molding of blowing is also simple and convenient.
The solubleness of opal glass of the present invention is low, below 1400 ℃, can solve the erosion problem of glass furnace.
Though Al among the present invention 2O 3Content higher, but the coefficient of thermal expansion of opal glass of the present invention is than soda-lime glass (about 90 * 10 -7/ ℃) low, and the resistance toheat height of glass, annealing time is short.
The present invention also has following effect unique.
The present invention has wide range of applications as a kind of novel environment-friendly opal glass, for example can be used for sheet glass, bottle for cosmetics, medicine bottle, food-bottle, ambetti or the like.
The opacity height of opal glass of the present invention, particularly splendid to light to ultraviolet screening effect, can significantly improve the content preservation effect in the container.
Opal glass of the present invention can fuse by low temperature, and thermotolerance is good, is fit to do the container or the tun of shape complexity.
Opal glass preventing ultraviolet effect of the present invention is splendid, when being used for window glass, can prevent the problem of aging that indoor wallpaper, curtain etc. cause because of uviolizing.
Opal glass of the present invention shows smooth, be ground into powder after, can be used as opal glass particle additive, join in vibrin, acrylic resin, the Resins, epoxy.

Claims (9)

1, a kind of opal glass is characterized in that, its prescription is as follows:
SiO 235 ~ 65 weight %
P 2O 53.5 ~ 10 weight %
Al 2O 35.5 ~ 15 weight %
CaO 3.0 ~ 15 weight %
2, opal glass as claimed in claim 1 is characterized in that, SiO 2Content be controlled in 40 ~ 60 weight % scopes, do not contain 60 weight %.
3, opal glass as claimed in claim 1 is characterized in that, SiO 2Content be controlled in 35 ~ 55 weight % scopes, do not contain 55 weight %.
4, as the described opal glass of one of claim 1 to 3, it is characterized in that, in the above-mentioned prescription, Na 2The content of O is in 4 ~ 15 weight % scopes.
5, as the described opal glass of one of claim 1 to 4, it is characterized in that, in the above-mentioned prescription, K 2The content of O is in 1 ~ 10 weight % scope.
As the described opal glass of one of claim 1 to 5, it is characterized in that 6, in the above-mentioned prescription, the content of ZnO is in 2 ~ 10 weight % scopes.
7, as the described opal glass of one of claim 1 to 6, it is characterized in that, in the above-mentioned prescription, B 2O 3Content in 1 ~ 15 weight % scope.
8, as the described opal glass of one of claim 1 to 7, it is characterized in that, in the above-mentioned prescription, TiO 2Content in 0 ~ 7 weight % scope, do not contain 0 weight %.
9, as the described opal glass of one of claim 1 to 8, it is characterized in that, in the above-mentioned prescription, can be from MgO, BaO, SrO, Li 2O, ZrO 2, Sb 2O 3, CS 2O, SnO 2, choose an oxide compound at least among the PbO.
CNA031288391A 2003-05-26 2003-05-26 Lacte glass Pending CN1552650A (en)

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Cited By (12)

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CN101875534A (en) * 2010-06-28 2010-11-03 陈立德 High-boron milkglass tableware for daily use, production process and manufacturing method thereof
CN101462825B (en) * 2008-12-30 2011-02-16 中国南玻集团股份有限公司 Ultra-white float glass
CN101565274B (en) * 2009-03-03 2011-10-12 景德镇市焦化工业集团有限责任公司 Glass ceramic and preparation method thereof
CN102690060A (en) * 2012-04-24 2012-09-26 安徽三和乐玻璃有限公司 Low-borosilicate milky heat-resistant glassware
CN103588394A (en) * 2013-09-16 2014-02-19 河北省沙河玻璃技术研究院 White fluoride-free calendering microcrystalline glass and production method thereof
CN104583143A (en) * 2013-05-20 2015-04-29 兴亚硝子株式会社 White glass container, and method for manufacturing white glass container
CN104955780A (en) * 2013-01-29 2015-09-30 旭硝子株式会社 White glass
CN106458351A (en) * 2014-08-05 2017-02-22 兴亚硝子株式会社 White glass container and method for producing same
CN106746626A (en) * 2016-12-27 2017-05-31 钦州市中玻玻璃有限责任公司 A kind of porcelain white glass and preparation method thereof
CN109502967A (en) * 2018-11-22 2019-03-22 东华大学 A kind of acid and alkali-resistance free-floride opal glass and its preparation method and application
CN111039565A (en) * 2020-01-13 2020-04-21 山东晶峰玻璃科技有限公司 Milky white defluorinated glass and preparation method thereof
TWI703104B (en) * 2019-12-24 2020-09-01 大陸商湖州大享玻璃制品有限公司 METHOD OF MANUFACTURING SiO2-CaO-BASED CRYSTALLIZED GLASS

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101462825B (en) * 2008-12-30 2011-02-16 中国南玻集团股份有限公司 Ultra-white float glass
CN101565274B (en) * 2009-03-03 2011-10-12 景德镇市焦化工业集团有限责任公司 Glass ceramic and preparation method thereof
CN101875534A (en) * 2010-06-28 2010-11-03 陈立德 High-boron milkglass tableware for daily use, production process and manufacturing method thereof
CN102690060A (en) * 2012-04-24 2012-09-26 安徽三和乐玻璃有限公司 Low-borosilicate milky heat-resistant glassware
CN104955780A (en) * 2013-01-29 2015-09-30 旭硝子株式会社 White glass
US9458046B1 (en) 2013-05-20 2016-10-04 Koa Glass Co., Ltd. White glass container and method of producing white glass container
CN104583143A (en) * 2013-05-20 2015-04-29 兴亚硝子株式会社 White glass container, and method for manufacturing white glass container
TWI503296B (en) * 2013-05-20 2015-10-11 Koa Glass Co Ltd White glass container and method of producing white glass container
EP2829523A4 (en) * 2013-05-20 2016-03-16 Koa Glass Co Ltd White glass container, and method for manufacturing white glass container
CN104583143B (en) * 2013-05-20 2017-02-22 兴亚硝子株式会社 White glass container, and method for manufacturing white glass container
CN103588394B (en) * 2013-09-16 2016-06-29 河北省沙河玻璃技术研究院 A kind of White fluoride-free calendering devitrified glass and production method thereof
CN103588394A (en) * 2013-09-16 2014-02-19 河北省沙河玻璃技术研究院 White fluoride-free calendering microcrystalline glass and production method thereof
CN106458351A (en) * 2014-08-05 2017-02-22 兴亚硝子株式会社 White glass container and method for producing same
TWI588114B (en) * 2014-08-05 2017-06-21 興亞玻璃股份有限公司 White glass container, and the manufacturing method
CN106746626A (en) * 2016-12-27 2017-05-31 钦州市中玻玻璃有限责任公司 A kind of porcelain white glass and preparation method thereof
CN109502967A (en) * 2018-11-22 2019-03-22 东华大学 A kind of acid and alkali-resistance free-floride opal glass and its preparation method and application
CN109502967B (en) * 2018-11-22 2021-12-07 东华大学 Acid and alkali resistant fluoride-free opal glass and preparation method and application thereof
TWI703104B (en) * 2019-12-24 2020-09-01 大陸商湖州大享玻璃制品有限公司 METHOD OF MANUFACTURING SiO2-CaO-BASED CRYSTALLIZED GLASS
CN111039565A (en) * 2020-01-13 2020-04-21 山东晶峰玻璃科技有限公司 Milky white defluorinated glass and preparation method thereof
CN111039565B (en) * 2020-01-13 2022-07-08 山东晶峰玻璃科技有限公司 Milky white defluorinated glass and preparation method thereof

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