CN111268906A

CN111268906A - Application of glass composition with low magnesium oxide content

Info

Publication number: CN111268906A
Application number: CN201911361919.2A
Authority: CN
Inventors: 杨德宁
Original assignee: Individual
Current assignee: Shenzhen Qianhai Fawei New Material Technology Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-06-12

Abstract

The invention discloses the application of a glass composition with low content of magnesium oxide, which comprises the components of silicon oxide, calcium oxide, magnesium oxide and aluminum oxide, wherein the content of magnesium oxide is 4-6.99 percent and the content of aluminum oxide is 6-40 percent in percentage by weight, the content of silicon oxide is 1.6-9.5 times of the content of calcium oxide, and the content of calcium oxide is 0.8-2.5 times of the content of magnesium oxide. The softening point of the glass composition is 771-1080 ℃. The glass composition has a temperature of 1300 ℃ to 1600 ℃ at a log viscosity of 2.0.

Description

Application of glass composition with low magnesium oxide content

Technical Field

The invention relates to an application of a glass composition with low magnesium oxide content, belonging to the fields of high-temperature resistant glassware and high-temperature resistant glass fiber of engine cylinder body and cylinder cover glass with high strength and high softening point, high-temperature resistant explosion-proof glass, building fireproof glass, daily and industrial products (such as glass pots, glass tubes, micro glass furnace plates, kitchen range plates) and the like in the prior art.

Background

1. In the prior art (201110060944.4), the invention of the flat glass with high annealing point, environmental protection, energy saving, emission reduction, high strength, high flatness and low viscosity characteristics and related parts has the advantages that (the original magnesium oxide is in the range of 7-22.2%), the glass also has certain glass (breaking strength) and has the lower viscosity of the glass.

In addition to this, the various prior art solutions have not been found and disclosed, which simultaneously produce: the softening point of the glass composition is 771-1080 ℃ C. 2. the [ exclusive eutectic of silico-calcium-magnesium-aluminum ] properties of a new advanced glass material having [ melting and degassing bubble, homogenizing, fining ] temperatures of 1300 ℃ C. to 1600 ℃ C. at the same time the glass has a viscosity of (2.0) Viscosity (LogP) ].

2. The cast iron, aluminum alloy and precise ceramics of the prior engine (an engine cylinder body and a cylinder cover) have the following difficulties: material cost and cost of automobile cylinder processing are too high; aluminum alloys (engine cylinder and cylinder cover) cannot withstand higher temperatures and are easy to deform; (3) cast iron, aluminum alloy and precise ceramic cylinder body materials, the aluminum alloy has large integral mass under the same volume, and is not beneficial to reducing oil consumption; [ 4 ] oxidation reaction brought by the cast iron cylinder body material and the antifreeze solution has poor corrosion resistance and durability and is easy to rust; [ 5 ] aluminum alloy and precision ceramic cylinder materials, the strength is not high. (6) the melting temperature of the precision ceramic cylinder body material is too high, and the manufacturing process and the cost are too high. High-temperature glass with a softening point as high as 850 ℃ represented by the prior German Schottky company has a melting and air bubble exhaust temperature as high as 1620-; the difficulty and cost for researching and manufacturing the die-casting forming machine with the temperature as high as 1620-. The prior common glass can not meet the requirements of materials of engine cylinder bodies and cylinder covers in softening point and strength.

3. The prior art is high temperature resistant building (high softening point fireproof glass) represented by a product of German Schottky company, and the softening point is as high as 850 ℃. The product only contains 0-2 percent of calcium oxide or magnesium oxide and 3-5 percent of alumina, the temperature of [ melting and air bubble discharging, homogenizing and clarifying ] of the glass at the viscosity of (2.0) Viscosity (LogP) is more than 1650-1680 ℃, 1300-1600 ℃ of the glass and 50-380 ℃ lower; the embodiments of the invention are all at 1300 ℃ and 1460 ℃, and the embodiments of the invention are lower than 220 ℃ and 380 ℃. The prior art has difficulty in manufacturing the adhesive because the viscosity temperature is too high.

But German Schottky company adopts the patent technologies of high-temperature vacuumizing and platinum rod stirring for bubble removal, homogenization and clarification to overcome the production difficulty. In the field of high-temperature resistant buildings (high-softening-point fireproof glass) in the prior art, the glass is the only technical enterprise which can produce high-softening-point (850 ℃) level (with high qualification rate) all over the world.

In the daily and industrial glassware and fields of high temperature resistance (such as glass pots, glass tubes, micro-glass furnace plates, kitchen range plates) and the like in the prior art: the product of Corning company in America is representative, the manufacturing process is very difficult, the product only contains 0-2% of calcium oxide or magnesium oxide and 3-5% of alumina, and the temperature of [ melting and air bubble exhausting, homogenizing and clarifying ] of the glass at the viscosity of (2.0) Viscosity (LogP) is above 1630-. The temperature of the glass of the invention is 1300-1600 ℃ lower than that of the glass of the invention by 50-380 ℃; the embodiments of the invention are all at 1300 ℃ and 1460 ℃, and the embodiments of the invention are lower than 220 ℃ and 380 ℃. The prior art has difficulty in manufacturing the adhesive because the viscosity temperature is too high.

4. The United states Corning company adopts the patent technology of bubble removal, homogenization and clarification of a platinum channel to overcome the production difficulty. In the fields of high-temperature resistant glassware and the like in daily use and industry (such as glass pots, glass tubes, micro-glass furnace plates, kitchen range plates), and the like, the glass is a globally important (high-qualification-rate-capable) technical enterprise with the level of producing high softening point (770 plus 820 ℃).

In addition, in the production, the enterprises in various countries do not adopt the patent technologies of high-temperature vacuumizing and platinum rod stirring for bubble discharging, homogenization and clarification and the patent technologies of bubble discharging, homogenization and clarification of a platinum channel, and the enterprises in various countries have the following advantages that the softening point is difficult to reach (770-: 【2】 Or the viscosity temperature is too high in the production, so that the raw materials are not fully dissolved (serious defects of slag points occur), and the product is unqualified. 【3】 Or the viscosity temperature is too high in production, (so that air bubbles are not sufficiently removed), serious defects are generated, and products are formed to be unqualified. 【4】 Or the viscosity temperature is too high in production, so that serious defects (unqualified glass ribs) are generated in the forming process stage, and the formed product is unqualified.

Disclosure of Invention

The use of a glass composition with a low magnesia content, the glass comprising the components of, by weight percent, 4-6.99% magnesia, 6-40% alumina, 1.6-9.5 times the silica content and 0.8-2.5 times the magnesia content, in the glass, characterized in that:

the softening point of the glass composition is 771-1080 ℃;

the glass composition has a temperature of 1300 ℃ to 1600 ℃ at a log viscosity of 2.0.

Wherein the temperature of the glass is 1300-1430 ℃ when the viscosity logarithm value is 2.0.

Wherein the glass composition has a softening point of 820-.

Wherein the glass composition has a flexural strength of 191 to 380 MPa.

An engine block or cylinder head of high softening point glass made from glass using the glass composition of low magnesia content.

A high softening point fire and explosion resistant architectural glass characterized in that it is made from a flat glass using the glass composition with low magnesium oxide content.

A liquid crystal display panel, comprising:

an array substrate comprising a substrate and a pixel structure on the substrate, the substrate being made of flat glass for applications of the glass composition with a low content of magnesium oxide;

a color filter substrate including a substrate and a color filter layer on the substrate, the applied plate glass being manufactured;

a liquid crystal layer sandwiched between the array substrate and the color filter substrate; and

a backlight system.

A high softening point decorative glass article made from glass using said low magnesia content glass composition, wherein the glass has a colored glaze printed thereon.

A photovoltaic solar device comprising solar cells and a glass substrate or superstrate made from the glass of the use of a low magnesia content glass composition.

A method for preparing the application of the glass composition with low magnesium oxide content, which is characterized in that:

step 1, preparing raw materials according to an application glass formula of the glass composition with low magnesium oxide content, mixing and stirring the raw materials, melting the mixture to form molten glass with preset viscosity, homogenizing the molten glass, clarifying the molten glass, and discharging bubbles to form a flowable molten mass;

step 2, one of the following steps is selected: forming the glass by adopting a float process, a horizontal drawing process, a lattice process, a rolling process or an overflow process to prepare plate glass; or

Selecting two: forming the glass by adopting a blow forming process, a pressing or casting or die-casting forming process or a tube drawing forming process to prepare a glass product; or

Selecting the third: and (3) preparing a glass fiber product by adopting a glass drawing process.

Drawings

FIG. 1 is a schematic plan view of a flat glass article incorporating the use of a low magnesia content glass composition of the present invention.

FIG. 2 is a schematic view of a float process for forming a glass composition having a low magnesium oxide content according to the present invention.

FIG. 3 is a schematic side sectional view of a state where the glass composition with a low magnesium oxide content of the present invention is formed by a float process.

FIG. 4 is a schematic cross-sectional view of a glass tube article made from an embodiment of the low magnesia glass composition of the present invention formed by a tube drawing process.

FIG. 5 is a schematic cross-sectional view of a glass fiber product made from an embodiment of a low magnesia glass composition of the present invention formed by a drawing process.

Description of the reference numerals

1: flat glass for applications of glass compositions with a low magnesium oxide content, 2: feed inlet of stock bin, 3: a stock bin, 4: mixed raw materials with preset preparation, 5: raw materials enter a melting bath mouth of a melting bath, 6: pool furnace, 7: guiding gutter, 8: tin bath, 9: transition roll table, 10: annealing kiln, 11: cutting and subpackaging table, 12: float line substrate.

Detailed Description

The following examples of the present invention are described in detail (in this specification, unless otherwise specified, the contents of the various components in the glass are in weight percent).

In the embodiment of the invention, a rotational high-temperature viscometer of American THTA is adopted for measuring the viscosity.

In the embodiment of the invention, the softening point performance is measured by adopting ASTMC-338 standard.

The strength properties in the examples of the invention were measured in accordance with GB/T3810.4-2006.

The samples were measured by cutting them into small strips of 50mm by 5mm according to standard GB/T3810.4-2006. The strength described in our previous patents is generally determined without cutting the sample into small strips of 50mm x 5 mm. But because the cutting can cause pores and cracks or crazes on the glass strip, the strength data of the glass can generate large errors; only a comparison of the strength data of different glasses after the same cutting can be made. Except that the electronic touch screen glass has the standard of the devitrification strength, the devitrification strength is measured after chemical strengthening and physical polishing, and the conventional flat glass products have the standard of the devitrification strength which is only the standard of a measuring method.

Therefore, in the measuring process of the embodiment of the patent, a sample is cut into small strips of 50mm multiplied by 5mm, and then physical or chemical polishing is carried out, so that the defects of pores, cracks or cracks on the surface of the glass can be completely removed after cutting, the error of the real intensity data of the glass is small, and more accurate data can be obtained.

Use of a glass composition of the invention with a low magnesia content example 1:

the content of alumina in the glass is 19 percent and the content of magnesia in the glass is 4.3 percent in percentage by weight; the content of silicon oxide is 60%; the content of calcium oxide is 6.6 percent; 10.1% of boron oxide; the content of the silicon oxide is 9.1 times of that of the calcium oxide; the content of calcium oxide is 1.5 times of the content of magnesium oxide, and the method is characterized in that:

the softening point of the glass composition was 860 ℃.

The temperature of the glass at [ melting and degassing bubble, homogenisation, fining ] at a viscosity of (2.0) viscocity (logp) is 1530 ℃;

example 1 of the use of a low magnesia glass composition as described above:

step 1, preparing various required raw materials with components in a predetermined indispensable special range and components with a predetermined special proportion relation among silicon oxide, calcium oxide and magnesium oxide according to the glass formula, mixing and stirring the raw materials, melting the raw materials at a melting temperature corresponding to each glass formula to form glass liquid with a predetermined viscosity, homogenizing, clarifying and discharging bubbles to form a flowable molten mass;

step 2, one of the following steps: forming the glass by adopting a float process, a horizontal drawing process, a lattice process, a rolling process or an overflow process to prepare plate glass;

selecting two:

forming the glass by adopting a blow forming process, a pressing or casting or die-casting forming process or a tube drawing forming process to prepare a glass product;

a third option:

and (3) preparing a glass fiber product by adopting a glass drawing process.

Use of a glass composition of the invention with a low magnesia content example 2:

the content of alumina in the glass is 25 percent and the content of magnesia in the glass is 6.5 percent in percentage by weight; the content of silicon oxide is 34.5%; the content of calcium oxide is 5.5 percent; 15% of boron oxide; 12% of sodium oxide; 1.5 percent of potassium oxide; the content of the silicon oxide is 6.25 times of that of the calcium oxide, and the content of the calcium oxide is 0.85 times of that of the magnesium oxide, and the method is characterized in that:

the softening point is 830 ℃;

the temperature of the glass at a viscosity of (2.0) Viscosity (LogP) [ melting and degassing bubble, homogenization, clarification ] is 1320 ℃.

Example 2 of the use of a low magnesia glass composition as described:

selecting two:

a third option:

and (3) preparing a glass fiber product by adopting a glass drawing process.

Use of a glass composition of the invention with a low magnesia content example 3:

the glass comprises 8 percent of alumina and 6 percent of magnesia by weight percent; the content of silicon oxide is 60%; the content of calcium oxide is 14 percent; the boron oxide content is 12%; the content of the silicon oxide is 4.3 times of that of the calcium oxide; the content of calcium oxide is 2.3 times of that of magnesium oxide; the method is characterized in that:

the softening point of the glass composition is 800 ℃;

the temperature of the glass at a viscosity of (2.0) viscocity (logp) [ melting and degassing bubble, homogenizing, fining ] is 1460 ℃;

example 3 of the use of a low magnesia glass composition as described herein, the method of preparation:

selecting two:

a third option:

and (3) preparing a glass fiber product by adopting a glass drawing process.

Use of a glass composition of the invention with a low magnesia content example 4:

the content of alumina in the glass is 18.4 percent and the content of magnesia in the glass is 6.6 percent in percentage by weight; the content of silicon oxide is 27%; the content of calcium oxide is 15 percent; 15% of boron oxide; 13% of sodium oxide; 5% of potassium oxide; the content of silicon oxide is 1.8 times of the content of calcium oxide; the content of calcium oxide is 2.3 times of that of magnesium oxide; the method is characterized in that:

the softening point of the glass composition is 810 ℃;

the temperature of the glass at a viscosity of (2.0) viscocity (logp) [ melting and degassing bubble, homogenisation, fining ] is 1490 ℃;

example 4 of the use of a low magnesia glass composition as described in the preparation of:

selecting two:

a third option:

and (3) preparing a glass fiber product by adopting a glass drawing process.

Use of a glass composition of the invention with a low magnesia content example 5:

the content of alumina in the glass is 38.5 percent by weight; the content of magnesium oxide is 6.5%; the content of silicon oxide was 38%; the content of calcium oxide is 10 percent; the boron oxide content is 7%; the content of silicon oxide is 3.8 times of that of calcium oxide; the content of calcium oxide is 1.5 times of that of magnesium oxide; the method is characterized in that:

the flexural strength of the glass composition was 355 MPa;

the softening point was 1060 ℃.

The temperature of the glass at a viscosity of (2.0) Viscosity (LogP) [ melting and degassing bubble, homogenizing, clarifying ] is 1490 ℃.

Example 5 of the use of a low magnesia glass composition as described above:

step 2, one of the following steps: forming the glass by adopting a float process, a horizontal drawing process, a lattice process, a rolling process or an overflow process to prepare plate glass; then, printing colored glaze on the glass, and sintering to prepare decorative plate glass with the colored glaze;

selecting two:

forming the glass by adopting a blow forming process, a pressing or casting or die-casting forming process or a tube drawing forming process to prepare a glass product; then the glass is printed with the colored glaze, and the glass is sintered to prepare the decorative glass product with the colored glaze

A third option:

and (3) preparing a glass fiber product by adopting a glass drawing process.

Use of a glass composition of the invention with a low magnesia content example 6:

the content of alumina in the glass is 34 percent and the content of magnesia in the glass is 6 percent in percentage by weight; the content of silicon oxide is 42%; the content of calcium oxide is 10 percent; the content of boron oxide is 8%; the content of the silicon oxide is 4.2 times of that of the calcium oxide, and the content of the calcium oxide is 1.7 times of that of the magnesium oxide, and the method is characterized in that:

the flexural strength of the glass composition is 273 MPa;

the softening point is 1010 ℃.

The glass has a [ melting and degassing bubble, homogenizing, clarifying ] temperature of 1440 ℃ at a viscosity of (2.0) Viscosity (LogP).

Example 6 of the use of a low magnesia glass composition as described herein:

selecting two:

a third option:

and (3) preparing a glass fiber product by adopting a glass drawing process.

Description of the Prior Art

1. The prior art (201110060944.4) -the application of plate glass with high annealing point, environmental protection, energy saving, emission reduction, high strength, high flatness and low viscosity characteristics and related parts ] is the invention (magnesium oxide is 7-23%); the invention also provides a technical concept and the inventor's prior art (201110060944.4-application and related parts of plate glass with high annealing point, high strength, high flatness and low viscosity characteristics of environmental protection, energy saving and emission reduction) (7-23% of magnesium oxide) wherein the glass has lower viscosity property.

In the technical scheme of the invention, the content of the magnesium oxide is different and is 4-6.99%. The branch effect of the invention can basically reach the existing top-level technical level; and can also greatly exceed the state of the art at the top level.

The various prior art solutions are not found and disclosed, under the conditions of [ technical solution with glass composition of the present invention ], simultaneously producing: 1. the softening point is [ 771-1080 ℃ C ], 2. the [ exclusive eutectic of Si-Ca-Mg-Al ] properties of the new advanced glass material with [ melting and degassing bubble, homogenizing, clarifying ] temperature of 1300-1600 ℃ C at the same time the glass has viscosity of (2.0) Viscosity (LogP).

3. The prior art is high temperature resistant building (high softening point fireproof glass) represented by a product of German Schottky company, and the softening point is as high as 850 ℃. The product has only 0-2% calcium oxide or magnesium oxide content and 3-5% aluminum oxide content, and the glass has a viscosity (2.0) Viscosity (LogP) ([ melting and degassing bubble, homogenizing, clarifying ]) temperature of 1650-1680 deg.C or above. The temperature of the glass of the invention is 1300-1600 ℃ lower than that of the glass of the invention by 50-380 ℃; the embodiments of the invention are all at 1300 ℃ and 1460 ℃, and the embodiments of the invention are lower than 220 ℃ and 380 ℃. The prior art has difficulty in manufacturing the adhesive because the viscosity temperature is too high.

4. In the daily and industrial glassware and fields of high temperature resistance (such as glass pots, glass tubes, micro-glass furnace plates, kitchen range plates) and the like in the prior art: the product of Corning company in America is representative, the manufacturing process is very difficult, the product only contains 0-2% of calcium oxide or magnesium oxide and 3-5% of alumina, and the temperature of [ melting and air bubble exhausting, homogenizing and clarifying ] of the glass at the viscosity of (2.0) Viscosity (LogP) is above 1630-. The temperature of the glass of the invention is 1300-1600 ℃ lower than that of the glass of the invention by 50-380 ℃; the embodiments of the invention are all at 1300 ℃ and 1460 ℃, and the embodiments of the invention are lower than 220 ℃ and 380 ℃. The prior art has difficulty in manufacturing the adhesive because the viscosity temperature is too high.

The United states Corning company adopts the patent technology of bubble removal, homogenization and clarification of a platinum channel to overcome the production difficulty. In the fields of high-temperature resistant glassware and the like in daily use and industry (such as glass pots, glass tubes, micro-glass furnace plates, kitchen range plates), and the like, the glass is a globally important (high-qualification-rate-capable) technical enterprise with the level of producing high softening point (770 plus 820 ℃).

5. In addition, when the above [ patent technologies for high-temperature vacuum pumping and platinum bar stirring for bubble discharging, homogenization and clarification ] and [ patent technologies for bubble discharging, homogenization and clarification of a platinum channel ] are not adopted by enterprises in various countries, the softening point is [ 1 ] or is difficult to reach (770-: 【2】 Or the raw materials are not fully melted because the viscosity temperature is too high in the production (serious defects of slag points occur), and the product is unqualified. 【3】 Or the product is unqualified because the viscosity temperature is too high (bubbles cannot be fully removed) in the production process, and serious defects are generated. 【4】 Or the viscosity temperature is too high in production, so that serious defects (unqualified glass ribs) are generated in the forming process stage, and the formed product is unqualified.

The differences between the prior art and the present invention

The invention relates to an application of a glass composition with low magnesium oxide content, belonging to the fields of engine cylinder body and cylinder cover glass, high-temperature-resistant explosion-proof glass, building fireproof glass, special glass, daily-use and industrial glassware (such as glass pots, glass tubes, and the like) and glass fiber in the prior art.

The invention discloses the application of a glass composition with low content of magnesium oxide, which comprises the components of silicon oxide, calcium oxide, magnesium oxide and aluminum oxide, wherein the content of magnesium oxide is 4-6.99 percent, the content of aluminum oxide is 6-40 percent, the content of magnesium oxide is 4-6.99 percent, the content of silicon oxide is 1.6-9.5 times of the content of calcium oxide, and the content of calcium oxide is 0.8-2.5 times of the content of magnesium oxide, which is characterized in that:

the softening point of the glass composition is 771-1080 ℃;

and the unique eutectic of silico-calciummagnesium-aluminium properties of new advanced glass materials having a temperature of 1300-1600 ℃ at a viscosity of (2.0) viscocity (logp) [ melting and degassing bubble, homogenisation, fining ] of the glass.

The invention is different from the inventor's prior art (201110060944.4-application and related parts of plate glass with high annealing point, environmental protection, energy saving, emission reduction, high strength, high flatness and low viscosity characteristics) (magnesium oxide is 7-23%). However, the prior art (201110060944.4) does not find that the softening point of the glass composition of the present invention is [ 771-1080 ℃ ] new properties, and the new properties cannot be utilized to produce unexpected technical effects.

The content of magnesium oxide in the technical scheme of the invention is 4-6.99%, and the effect of the branch operation can basically reach the level of the prior top-level technology; and can also greatly exceed the state of the art at the top level.

The invention is also the invention of the use of chemical products, which is based on the discovery that the products are new: the softening point of the glass composition is 771-1080 ℃; and the unique eutectic of silico-calciummagnesium-aluminium properties of new advanced glass materials having a temperature of 1300-1600 ℃ at a viscosity of (2.0) viscocity (logp) [ melting and degassing bubble, homogenisation, fining ] of the glass.

And the invention is made by utilizing this property. Whether new or known, the properties are inherent in the product itself, and the essence of the invention lies not in the product itself, but in the application of the properties of the product.

In the prior knowledge and at education books and the known technology, no disclosure is available: the invention relates to the application of a glass composition with low content of magnesium oxide, which comprises the components of silicon oxide, calcium oxide, magnesium oxide and aluminum oxide, wherein the content of magnesium oxide is 4-6.99 percent, the content of aluminum oxide is 6-40 percent, the content of magnesium oxide is 5-23 percent, the content of silicon oxide is 1.6-9.5 times of the content of calcium oxide, and the content of calcium oxide is 0.8-2.5 times of the content of magnesium oxide, and the invention is characterized in that:

the softening point of the glass composition was [ 771-1080 ℃.

And the expression [ exclusive eutectic of silico-calciummagnesium-aluminium ] properties of the new advanced glass material with a temperature of 1300-1600 ℃ together with [ melting and degassing bubble, homogenisation, fining ] of the glass at a viscosity of (2.0) viscocity (logp).

The invention is also a change invention of the technical key relation, because of the effect of different new technical schemes of the invention, the invention can basically reach the prior art level; and can also greatly exceed the existing top-level technology level. Therefore, the technical scheme of the invention also has remarkable progress and creativity.

The application and use of the aluminoborosilicate building glass, the special glass, the daily-use and industrial glass (such as glass ware and glass fiber fields like glass pots, glass tubes, etc.) find that the softening point of the glass composition is 771-1080 ℃ and the unique eutectic of silicon, calcium, magnesium and aluminum (Si-Ca-Mg-Al) property of the new advanced glass material with 1300-1600 ℃ of the [ melting and air bubble discharging, homogenizing and clarifying ] temperature of the glass when the viscosity is (2.0) Viscosity (LogP) is simultaneously possessed.

The invention also relates to the application of the chemical product, which is invented based on the discovery of new properties of the product and the utilization of the properties.

The technical scheme of the invention does not influence the advancement and the creativity of the invention if the technical scheme is overlapped or crossed with the content of a certain prior art scheme.

Because of the invention, the invention is in the new use of the building glass of the prior art, special glass, and the high-temperature explosion-proof glass of the prior art in the fields of daily and industrial glassware (such as glass pots, glass tubes, and the like), building fireproof glass, daily and industrial glassware (such as glass pots, glass tubes, micro glass furnace plates, kitchen range plates), and the like, and the application in the fields:

the prior art is not able to derive or appreciate the above properties of the new advanced materials produced from the variations in the content of magnesium oxide from 7-23% down to 4-6.99%, the intrinsic properties of magnesium oxide, their own structure, composition, molecular weight, known physicochemical properties, and the existing uses of the product; the prior art has failed to recognize that the use of newly discovered product properties can produce the following unexpected technical effects:

the invention comprises the following steps:

1. the invention is advanced material glass, which can overcome the problems of the prior cast iron, aluminum alloy and precise ceramics

The technical difficulties of the engine cylinder body and the cylinder cover are as follows: the advanced material glass is used for engine cylinder bodies and cylinder covers, and is lighter than cast iron by more than 3 times and lighter than aluminum alloy when the volume of the glass is equal, so that the glass material has small integral mass and the cylinder bodies have the advantages that: A. the generated heat load capacity is stronger, B. can bear larger horsepower, C. is favorable for reducing oil consumption and the like, and has 3 technical effects which cannot be expected. The strength of the advanced material glass used for engine cylinder bodies and cylinder covers can reach 380MPa which is about 50 percent higher than the 250-strength of aluminum alloy 150; 20-50% lower than that of cast iron 250-500 MPa, but if the volume is increased by 20%, the strength of the cast iron can be achieved, and the cast iron is 2 times lighter than that of the cast iron, so that the engine cylinder body and the cylinder cover have the advantages of wear resistance, durability and capability of bearing large horsepower. The cost of the advanced material glass used for the engine cylinder body and the cylinder cover is about 2500 yuan per ton, which is 7 times lower than that of the aluminum alloy 18000 yuan per ton; compared with 3500 Yuan-ren-Min-Bi-ton cast iron engine cylinder and cylinder cover, the cost is 40% lower, so that the economic bottleneck that the cost is too high and the application range is small due to the aluminum alloy (aluminum alloy) can be overcome.

Therefore, the advanced material glass is used for engine cylinder bodies and cylinder covers, and has the following advantages compared with cast iron and aluminum alloy: the lighter A. generates stronger heat load capacity, B. can bear larger horsepower, C. is favorable for reducing oil consumption and other 3 technical effects which cannot be expected. Can simultaneously have the following functions: due to its higher strength [ engine block and cylinder head ], the technical effect of being unsuited for wear resistance and durability and being more able to withstand large horsepower. Can simultaneously have the following functions: the characteristics of 7 times lower cost than cast iron and aluminum alloy can be used, and the technical effect that the material cannot be fed is achieved, and the material is lighter than aluminum alloy (engine cylinder body and cylinder cover).

High-temperature glass with a softening point as high as 850 ℃ represented by the prior German Schottky company, a melting temperature as high as 1620 ℃ and 1680 ℃, and the engine cylinder body and the cylinder cover cannot be produced on a mature die-casting forming machine at about 1400 ℃; the difficulty and cost for researching and manufacturing the die-casting forming machine with the temperature as high as 1620-. The melting temperature of the glass can reach 1300-1400 ℃, and the glass can be produced on a mature die-casting forming machine (an engine cylinder body and a cylinder cover) at about 1300-1400 ℃, and has the technical effect of no material supply. And [ 5 ] in the limit temperature resistance and deformation points of the engine cylinder body and the cylinder cover, because the change value of the thermal expansion of the aluminum alloy material and the cast iron is very large when the temperature rises by 100 ℃, the deformation degree is also very large, in the limit temperature resistance and deformation points of the engine cylinder body and the cylinder cover, the aluminum alloy material is about 350 ℃, and the cast iron is 450 ℃. The softening point of the glass can reach 850-1080 ℃, and the deformation point can also reach 700-900 ℃. And because the change value of the thermal expansion of the glass of the invention is very small (within 2-4 ppm) when the temperature rises by 100 ℃, and the deformation degree is very small, the glass of the invention can resist the extreme temperature of an engine cylinder body and a cylinder cover and can also reach 700-900 ℃. This helps [ engine block and cylinder head ] withstand higher temperatures without modification. Can also help to overcome the problem that the glass material has inferior thermal conductivity to cast iron and aluminum alloy, and has the technical effect of being not pre-dosed. And [ 6 ] because the glass material of the invention has lower viscosity but higher softening point, when the cylinder body of the engine is produced by adopting the pressing or casting or die-casting forming process, the cost is lower than that of cast iron, aluminum alloy and precise ceramic, the qualification rate is higher, and the invention has the technical effect of europium which cannot be pre-dosed. [ 7 ] the existing traditional glass has low softening point, and is not suitable for being made into a cylinder body and a cylinder cover of an engine, which can bear higher temperature and is not easy to deform. Aluminum alloys (engine cylinder and cylinder cover) are made of materials, oxidation reaction brought by antifreeze is poor in corrosion resistance and durability, and oxidation reaction brought by iron castings (engine cylinder and cylinder cover) is poor in corrosion resistance and durability and easy to rust; as known to persons skilled in the art, the glass material of the invention has the characteristics of overcoming the difficulties of oxidation reaction, poor corrosion resistance and durability and easy rusting caused by cast iron and aluminum alloy cylinder body materials and antifreeze, and having the technical effect of no material supply. Glass is inferior to cast iron and aluminum alloys in thermal conductivity, but this problem can be solved by improvements in cooling water systems [ engine block and cylinder head ]. Cast iron and aluminum alloys [ engine cylinder and cylinder head ], are inferior to the glass material of the present invention in hardness, so the present invention [ engine cylinder and cylinder head ] is more advantageous in wear resistance and durability and has technical effects that the materials cannot be expected. Precision ceramic materials, as known to those skilled in the art, are usually manufactured by high-temperature ceramic powder solid vacuum pumping and high-pressure process, and have extremely high manufacturing process and cost, and are used as large-scale automobiles (engine cylinders and cylinder covers). The glass material of the invention adopts a liquid glass die-casting manufacturing process, so the cost is many times lower, and the glass material has the technical effect that the material cannot be pre-fed.

2. The present invention can yield over [ top prior art german schottky and american corning ]: (1) softening point [ 770-820-850 ℃ C ]. The invention achieves the properties of the advanced glass material with the softening point of 771-. Can reach the softening point at 770-820-850 ℃ in production; can also reach the higher technical level of softening point [ 851-. And the technical effect of building fire prevention which cannot be expected is generated. Also produced are levels at viscosity (2.0) viscocity (logp) in excess of [ top prior art german schottky and american corning ], and lower advanced [ melting and debubbling, homogenizing, clarifying ] temperatures of 1280 ℃ to 1600 ℃; or 1300 ℃ to 1520 ℃; or the unique eutectic body of silicon, calcium, magnesium and aluminum in the new advanced glass material at 1300-1430 ℃.

3. 1650-; the temperature 1630 @ melting and de-bubbling, homogenizing, clarifying @ from corning, usa @ temperature 1640 ℃. Compared with the glass of the invention at 1300-1600 ℃ and 50-380 ℃ in the prior art; the inventive examples are all at 1300 ℃ and 1460 ℃, and the prior art is higher than the inventive examples by 220 ℃ and 380 ℃.

The invention comprises the following steps: 1. can overcome the defects of the prior art in the production (in order to reach 770-850℃)

High softening point, and a viscosity that results in a viscosity of (2.0) viscocity (logp) [ melting and degassing bubble, homogenization, clarification ] is a technical bottleneck and difficulty with too high a viscosity temperature). The method overcomes the serious defect that the raw material is not fully dissolved because the viscosity temperature is too high in the prior art and slag points are not fully dissolved, thereby forming the difficulty of product unqualified. 2. Can overcome the technical bottleneck and difficulty of the prior art (the viscosity temperature of melting and degassing bubble, homogenization and clarification is too high when the viscosity is (2.0) Viscosity (LogP) in order to achieve the high softening point of 770-850 ℃). The problem that the product is unqualified due to serious defects caused by too high viscosity temperature (bubbles are not fully eliminated) in the prior art is overcome. 3. Can overcome the technical bottleneck and difficulty of too high viscosity temperature of melting and degassing bubbles, homogenizing and clarifying when the viscosity is (2.0) Viscosity (LogP) in the production (in order to achieve the high softening point of 770-850 ℃) in the prior art). 4. Can overcome the difficulty of serious defects of the prior art in the forming process stage (generating unqualified bubbles and glass ribs) due to too high viscosity temperature. 5. The invention can overcome the technical difficulties of the prior cast iron, aluminum alloy and precise ceramics (engine cylinder body and cylinder cover).

The invention is characterized in that the temperature of [ melting and air bubble discharging, homogenizing and clarifying ] is 1280-1640 ℃ when the viscosity is (2.0) Viscosity (LogP); 1300 ℃ to 1520 ℃; the unique eutectic body of silicon, calcium, magnesium and aluminum in the new advanced glass material at 1300-1430 ℃. Compared with the prior world top grade CN technology, Germany Schottky company and American Corning company, the temperature is lower by 100-. Because the temperature of the melt viscosity is lower than 120-300 ℃ in the prior art and the energy consumption is mainly in a high-temperature region, the invention has the technical effects that the invention can not feed materials (can save the energy consumption by 30-40 percent and reduce the carbon dioxide emission by 30-40 percent).

Due to the existing world top grade, CN technology German Schottky company and American Corning company, products in high-temperature resistant glassware and fields such as high-temperature resistant high-softening point glass, fireproof and explosion-proof glass and prior daily and industrial glass and industry types (such as glass pots, glass tubes, micro glass furnace plates, kitchen burning range plates) and the like have high viscosity, only 3-6% of alumina is contained, otherwise the viscosity is higher and more difficult to produce. Viscosity temperature at viscosity (2.0) viscocity (logp) [ melting and degassing bubble, homogenization, clarification ] from 1280 ℃ to 1640 ℃; 1300 ℃ to 1520 ℃; the unique eutectic body of silicon, calcium, magnesium and aluminum in the new advanced glass material at 1300-1430 ℃. The viscosity temperature of the invention (melting, bubble discharge, homogenization and clarification) is lower than 100-380 ℃. As the aluminum oxide can be contained by 20-35 percent, the strength can be 2-3 times higher than that of Germany Schottky company and American Corning company (see the examples in the specification). Therefore, when the glass is roasted at 850 ℃ according to the standards of high-temperature glass and fireproof glass, the technical effects that the glass can bear large stress change due to higher strength, bear longer roasting time of flame and greatly improve the fireproof and explosion-proof capability cannot be achieved are achieved.

In the prior knowledge and at education books and the prior art, the technical scheme of the invention discloses the expression of the properties and the low-viscosity temperature properties of the new advanced glass material with the softening reaching 770-. There is also no disclosure of a viscosity temperature of 1280 ℃ to 1640 ℃ of [ melting and degassing bubbles, homogenization, clarification ] at a viscosity of (2.0) viscocity (logp); 1300 ℃ to 1520 ℃; the expression of the [ unique eutectic of calcium, silicon, magnesium and aluminum ] property of the new advanced glass material at 1300-1430 ℃.

In the prior knowledge and at education books and the known technology, the technical scheme of the invention is not available, and the following technical effects which cannot be expected are also generated by the newly found product properties: 【1】 The invention overcomes the major technical difficulties of the industry all over the world, and has the technical effect of greatly improving the yield but not providing materials. 【2】 The invention can reach the higher softening point technical level of [ 851-. 【3】 The invention has the technical effects that the invention can not feed materials (save energy consumption by 30-40 percent and reduce carbon dioxide emission by 30-40 percent). 【4】 The invention has the technical effect that the materials cannot be supplied because the high-strength performance can bear more flame roasting time and greatly improve the fireproof and explosion-proof effects. 【5】 The invention can produce the technical effect that the technical difficulty of the prior cast iron, aluminum alloy and precise ceramics (engine cylinder body and cylinder cover) cannot be expected.

The invention also provides a technical solution (different from the prior art conception) which can basically achieve and exceed the prior art effect.

The technical scheme of the invention does not influence the advancement and the creativity of the invention if the technical scheme is overlapped or crossed with the content of a certain prior art scheme. Because the prior knowledge and the prior art of the invention are not disclosed in the prior art and the prior art:

the invention relates to the application of a glass composition with low content of magnesium oxide, which comprises the components of silicon oxide, calcium oxide, magnesium oxide and aluminum oxide, wherein the content of magnesium oxide is 4-6.99 percent, the content of aluminum oxide is 6-40 percent, the content of magnesium oxide is 5-23 percent, the content of silicon oxide is 1.6-9.5 times of the content of calcium oxide, and the content of calcium oxide is 0.8-2.5 times of the content of magnesium oxide, and the invention is characterized in that:

the softening point of the glass composition is 771-1080 ℃; and the unique eutectic of silico-calciummagnesium-aluminium properties of new advanced glass materials having a temperature of 1300-1600 ℃ at a viscosity of (2.0) viscocity (logp) [ melting and degassing bubble, homogenisation, fining ] of the glass.

In the new application of the high-temperature resistant glassware in the fields of high-temperature explosion-proof glass, building fireproof glass, daily and industrial high-temperature resistant glassware (such as glass pots, glass tubes, micro-glass furnace plates, kitchen range plates) and the like and the application industry in the field, the product (the structure, the composition, the molecular weight and the known physicochemical property and the content of magnesium oxide of the product (7-23 percent) are changed into the content of 4-6.99 percent of the invention) and the existing application can not be obviously obtained or can not be obviously obtained from the properties of new advanced materials, can not be utilized, and can not generate unexpected technical and effects.

Therefore, the technical scheme of the invention does not influence the advancement and the creativity of the invention if the technical scheme is overlapped or crossed with the content of a certain prior art scheme. The use of this known product can be considered inventive. The present invention is therefore a significant advance.

The branch effect of the invention can basically reach the existing top-level technical level; and can also greatly exceed the state of the art at the top level. The use of this known product can be considered inventive. The present invention is therefore a significant advance.

The technical solution of the present invention is not a logical reasoning or simple experiment which is considered later, and especially the unexpected technical progress effect generated by this technical solution is not obvious to those skilled in the art.

While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. It is understood that any simple modification, equivalent changes and modifications of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention, especially the contents of the claims.

Claims

1. The use of a glass composition with a low magnesia content, the glass comprising the components of, by weight percent, 4-6.99% magnesia, 6-40% alumina, 1.6-9.5 times the silica content and 0.8-2.5 times the magnesia content, in the glass, characterized in that:

the softening point of the glass composition is 771-1080 ℃;

2. Use of a low magnesia glass composition in accordance with claim 1, wherein: the glass has a temperature of 1300 ℃ to 1430 ℃ at a logarithmic viscosity number of 2.0.

3. Use of a low magnesia glass composition in accordance with claim 1, wherein: the softening point of the glass composition is 820-.

4. Use of a low magnesia glass composition in accordance with claim 1, wherein: the glass composition has a flexural strength of 191 to 380 MPa.

5. An engine block or cylinder head of high softening point glass, characterised in that it is made of glass for the use according to any one of claims 1 to 4.

6. A high softening point fire and explosion resistant architectural glass characterized by being made from a flat glass using the glass composition of any of claims 1 to 4 having a low magnesia content.

7. A liquid crystal display panel, comprising:

an array substrate comprising a substrate and a pixel structure on the substrate, the substrate being made of a flat glass for application of a glass composition with a low magnesia content according to any one of claims 1 to 4;

a color filter substrate comprising a substrate made of the flat glass for the application of any one of claims 1 to 4 and a color filter layer on the substrate;

a backlight system.

8. A high softening point decorative glass article made of glass having the application of a low magnesia content glass composition according to any one of claims 1 to 4, on which glass a coloured glaze is printed.

9. A photovoltaic solar device comprising a solar cell and a glass substrate or superstrate made from the glass, the glass substrate or superstrate made from the use of the glass composition of any one of claims 1 to 4 having a low magnesium oxide content.

10. A method for preparing a low magnesia glass composition according to any one of claims 1 to 4, characterized in that:

step 1, preparing raw materials according to the application glass formulation of the glass composition with low magnesium oxide content in any one of claims 1 to 4, melting the raw materials after mixing and stirring to form molten glass with a preset viscosity, homogenizing, clarifying and discharging bubbles to form a flowable molten mass;