CN114790312B - Composition for simulating viscosity characteristics of glass and application thereof - Google Patents
Composition for simulating viscosity characteristics of glass and application thereof Download PDFInfo
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- CN114790312B CN114790312B CN202210512599.1A CN202210512599A CN114790312B CN 114790312 B CN114790312 B CN 114790312B CN 202210512599 A CN202210512599 A CN 202210512599A CN 114790312 B CN114790312 B CN 114790312B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The invention relates to the technical field of combined materials, in particular to a composition for simulating glass viscosity characteristics and application thereof. The composition for simulating the viscosity characteristics of the glass comprises the following components in parts by weight: 50-70 parts of ethylene-vinyl acetate copolymer, 26-42 parts of petroleum resin and 4-10 parts of dibutyl phthalate. According to the composition for simulating the glass viscosity characteristics, provided by the invention, by reasonably matching the weight parts of the raw materials and adding the petroleum resin and the dibutyl phthalate on the basis of the ethylene-vinyl acetate copolymer, the components are mutually coordinated, so that the composition obtains a wider viscosity change range and a proper viscosity change rate, and meanwhile, the embrittlement characteristic of a composite material in a cooling process is reduced, and the composition with high consistency with the temperature-viscosity change trend of an actual glass product is obtained, so that the composition can be used for physical model research of design and production of glass melting furnace processing equipment.
Description
Technical Field
The invention relates to the technical field of combined materials, in particular to a composition for simulating glass viscosity characteristics and application thereof.
Background
The molten glass flow has very important significance in researching the thermal motion of the molten glass in the glass melting furnace, the operating characteristics of the melting furnace, the operation and the design of the melting furnace. However, since glass melting is usually carried out at a high temperature of 1500 to 1700 ℃, the flow of molten glass is in a high Wen Gongre state, which is inconvenient to observe, and effective observation and evaluation can be carried out only after glass molding is carried out under cooling conditions, serious evaluation deviation is caused, even misleading is caused to the design of kiln equipment, and huge economic loss is generated. The physical simulation method using the low-temperature simulator can solve the problem well. The low-temperature simulant is usually melted in the range of tens to hundreds of degrees, can replace high-temperature molten glass, avoids the phenomenon of high Wen Gongre, and is beneficial to observing and identifying the conditions of fluid movement, temperature field distribution, bubble removal and the like.
Traditional cryo-simulants mainly include water, vegetable oil, liquid paraffin, glycerol, and the like, which are mainly in liquid form at room temperature. However, these low temperature simulators have a narrow temperature-viscosity variation range, and cannot achieve a viscosity variation range during glass melting and refining and feeding, so that the obtained physical phenomenon is greatly distorted. Therefore, the low-temperature simulators cannot replace molten glass liquid to perform effective and reasonable physical simulation exploration, and cannot effectively guide the structural design of a glass melting furnace and the glass production process.
Disclosure of Invention
Based on this, the present invention provides a composition having a high consistency with the actual temperature-viscosity variation trend of glass.
In a first aspect of the present invention, there is provided a composition for simulating the viscosity characteristics of glass, wherein the raw materials for preparing the composite material comprise, in parts by weight: 50-70 parts of ethylene-vinyl acetate copolymer, 26-42 parts of petroleum resin and 4-10 parts of dibutyl phthalate.
In one embodiment, the composition for simulating glass viscosity characteristics comprises the following raw materials in parts by weight: 50-65 parts of ethylene-vinyl acetate copolymer, 30-42 parts of petroleum resin and 5-10 parts of dibutyl phthalate.
In one embodiment, the composition for simulating glass viscosity characteristics comprises the following raw materials in parts by weight: 50-60 parts of ethylene-vinyl acetate copolymer, 30-40 parts of petroleum resin and 8-10 parts of dibutyl phthalate.
In one embodiment, the ethylene vinyl acetate copolymer has a molar ethylene acetic acid content of 10% to 18% in the composition simulating glass viscosity characteristics.
In one embodiment, the composition simulates the viscosity characteristics of glass and the ethylene vinyl acetate copolymer has a relative molecular mass of 2000 to 4000.
In one embodiment, the composition that simulates the viscosity characteristics of glass, the melting point of the ethylene-vinyl acetate copolymer is less than 160 ℃; and/or the ethylene-vinyl acetate copolymer has a viscosity of 60 poise to 50000 poise.
In one embodiment, the temperature-viscosity curve of the composition conforms to the Fulcher equation lgη=A+B/(T-T) 0 ) A is-1.19 to 0.41; b is 86.85-699.00; t (T) 0 Is-57.67 to 55.00; t is the temperature in degrees Celsius; η is the viscosity at temperature T in poise.
In one embodiment, the composition has a viscosity ranging from 21 poise to 88346 poise at a temperature ranging from 75 ℃ to 150 ℃.
In a second aspect of the invention there is provided the use of a composition as described for simulating the viscosity characteristics of glass.
In one embodiment, the glass is suitable for use in a range of soda lime glass, borosilicate glass, and aluminosilicate glass.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the composition for simulating the glass viscosity characteristics, provided by the invention, by reasonably matching the weight parts of the raw materials and adding petroleum resin and dibutyl phthalate on the basis of the ethylene-vinyl acetate copolymer, the components are mutually cooperated, so that the temperature-viscosity change trend of the composition and an actual glass product is highly consistent.
Drawings
FIG. 1 is an equivalent temperature-viscosity curve of the compositions for simulating glass viscosity characteristics of examples 1-3 and comparative glass.
Detailed Description
In order that the invention may be understood more fully, the invention will be described with reference to the accompanying drawings. Preferred embodiments of the present invention are given below. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In the present invention, the numerical ranges are referred to as continuous, and include the minimum and maximum values of the ranges, and each value between the minimum and maximum values, unless otherwise specified. Further, when a range refers to an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range description features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to include any and all subranges subsumed therein.
The temperature parameter in the present invention is not particularly limited, and may be a constant temperature treatment or a treatment within a predetermined temperature range. The constant temperature process allows the temperature to fluctuate within the accuracy of the instrument control.
The preparation of glass comprises a series of physicochemical processes including carbonate decomposition, silicate reaction, glass liquid appearance, glass liquid clarification and homogenization, glass liquid cooling and the like, wherein a glass melting furnace is the most important thermal equipment in the glass production process. The high-temperature glass liquid in the glass melting furnace has forced flow and natural convection, and the flow field of the molten glass liquid has very important significance in researching the thermal motion of the glass liquid in the tank furnace, the operation characteristics of the melting furnace, the operation and the design.
However, glass melting often requires a high temperature of 1500-1700 ℃, glass melt is in a high Wen Gongre state, and the conditions inside the glass cannot be observed, such as whether bubbles in the glass melt are sufficiently removed, whether the glass melt is uniform, whether stones which are not melted exist, and the like, and only after glass forming, the glass can be effectively observed and evaluated under a cooling condition, so that serious evaluation errors are generated, even misleading is caused to the design of kiln equipment, and huge economic loss is generated.
The physical simulation method using the low-temperature simulator can solve the problem well. The low-temperature simulant is usually melted in the range of tens to hundreds of degrees, can replace high-temperature molten glass, avoids the phenomenon of high Wen Gongre, and is beneficial to observing and identifying the conditions of fluid movement, temperature field distribution, bubble removal and the like.
Over the past hundred years, researchers in many areas have used cryogenic simulators to simulate the kiln production run or to further guide kiln design. For example, in 1932, flint and lyol used water, vegetable oil, and paraffin as a simulation liquid, and the convection effect of the simulation liquid density with temperature was observed. They made a simple furnace model from metal, designed a glass window on the model to observe the flow field, and displayed the flow movement with colored tracers and measured the surface temperature, obtaining qualitative knowledge of the flow law under thermally driven conditions. In 1933 schill, a simulation experiment was performed using glycerol as a simulation fluid, taking into account the effects of reynolds number (Re), glas-kov number (Gr), ston number (St) and pluronic number (Pr). The furnace wall used in the experiment was flat glass, an electric heating element was fitted above the liquid level, and the simulation results were compared with photographs of the relevant streams given by furnace cold repair. In 1957 Kruszewks model, the flow of glass liquid was studied using glycerol as a simulated liquid and Galileo number (Ga) as a similar condition in a 1:20 ratio. In 1969, a Czech scholars Jarosslave Stan ě k established a physical model of an electric melting glass melting furnace, and colloidal lithium chloride conductive medium was added into glycerol to prepare a model liquid, so that the rule of the conductivity of the model liquid along with the change of temperature was highly similar to that of an actual glass liquid.
The traditional low-temperature simulants mainly comprise water, vegetable oil, liquid paraffin, glycerol and the like, and are mainly in liquid state at room temperature. But these low temperature simulants have a narrower temperature-viscosity variation region. Wherein the viscosity of the water and the vegetable oil is less than 5 poise; the viscosity change of paraffin does not exceed 100 poise; the viscosity of glycerol is only 30 poise-40 poise at room temperature to 90 ℃, and the viscosity of glass during melting, clarifying and feeding ranges from 100 poise-30000 poise. Therefore, the low-temperature simulators cannot replace molten glass to perform effective and reasonable physical simulation exploration, so that the obtained physical phenomenon is greatly distorted, and the structural design and the production process of the glass melting furnace cannot be effectively guided. Based on this, it is necessary to provide an ethylene-vinyl acetate copolymer composite material having a high consistency with the temperature-viscosity variation tendency of an actual glass product.
The invention provides a composition for simulating glass viscosity characteristics, which comprises the following raw materials in parts by weight: 50-70 parts of ethylene-vinyl acetate copolymer, 26-42 parts of petroleum resin and 4-10 parts of dibutyl phthalate.
In the above composition simulating glass viscosity characteristics, the weight part of the ethylene-vinyl acetate copolymer is 50-70 parts, specifically, the weight part of the ethylene-vinyl acetate copolymer includes but is not limited to: 50 parts, 51 parts, 52 parts, 53 parts, 54 parts, 55 parts, 56 parts, 57 parts, 58 parts, 59 parts, 60 parts, 61 parts, 62 parts, 63 parts, 64 parts, 65 parts, 66 parts, 67 parts, 68 parts, 69 parts, 70 parts.
In the above composition simulating glass viscosity characteristics, the weight parts of petroleum resin are 26-42 parts, specifically, the weight parts of petroleum resin include, but are not limited to: 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts, 41 parts, 42 parts.
In the composition for simulating the viscosity characteristics of glass, the weight part of dibutyl phthalate is 4-10 parts, specifically, the weight part of dibutyl phthalate includes, but is not limited to, 4 parts, 4.2 parts, 4.4 parts, 4.6 parts, 4.8 parts, 5 parts, 5.2 parts, 5.4 parts, 5.6 parts, 5.8 parts, 6 parts, 6.2 parts, 6.4 parts, 6.6 parts, 6.8 parts, 7 parts, 7.2 parts, 7.4 parts, 7.6 parts, 7.8 parts, 8 parts, 8.2 parts, 8.4 parts, 8.6 parts, 8.8 parts, 9 parts, 9.2 parts, 9.4 parts, 9.6 parts, 9.8 parts and 10 parts.
In one example, the composition simulating the viscosity characteristics of glass comprises the following raw materials in parts by weight: 50-65 parts of ethylene-vinyl acetate copolymer, 30-42 parts of petroleum resin and 5-10 parts of dibutyl phthalate.
In one example, the composition simulating the viscosity characteristics of glass comprises the following raw materials in parts by weight: 50-60 parts of ethylene-vinyl acetate copolymer, 30-40 parts of petroleum resin and 8-10 parts of dibutyl phthalate.
In one example, the ethylene vinyl acetate copolymer has a molar ethylene acetic acid content of 10% to 18%. Specifically, the ethylene-vinyl acetate copolymer has a molar ethylene-acetic acid content including, but not limited to, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%.
In one example, the ethylene vinyl acetate copolymer has a relative molecular mass of 2000 to 4000. In particular, the relative molecular masses of the ethylene-vinyl acetate copolymers include, but are not limited to, 2000, 2200, 2400, 2600, 2800, 3000, 3200, 3400, 3600, 3800, 4000.
In one example, the ethylene vinyl acetate copolymer has a melting point of less than 160 ℃ and/or the ethylene vinyl acetate copolymer has a viscosity of 60 poise to 50000 poise. Specifically, the viscosity of the ethylene-vinyl acetate copolymer includes, but is not limited to, 60 poise, 5000 poise, 10000 poise, 15000 poise, 20000 poise, 25000 poise, 30000 poise, 35000 poise, 40000 poise, 45000 poise, 50000 poise.
Further, the melting point of the ethylene-vinyl acetate copolymer is 70-160 ℃. Specifically, the melting point of the ethylene-vinyl acetate copolymer includes, but is not limited to, 70 ℃, 80 ℃, 90 ℃, 100 ℃, 110 ℃, 120 ℃, 130 ℃, 140 ℃, 150 ℃, 160 ℃.
In one example, the viscosity (η) versus temperature (T) of the composition simulating glass viscosity characteristics corresponds to the Fulcher equation lgη=a+b/(T-T) 0 ) Wherein A is-1.19 to 0.41; b is 86.85-699.00; t (T) 0 Is-57.67 to 55.00; t is the temperature in degrees Celsius; η is the viscosity at temperature T in poise.
In one example, the composition simulating the viscosity characteristics of glass has a viscosity ranging from 21 poise to 88346 poise at a temperature ranging from 75 to 150 ℃.
In one example, the composition does not include other resins.
In one example, the composition does not include antioxidants, silicon, and/or other inorganic components.
By reasonably matching the weight parts of the raw materials and adding petroleum resin and dibutyl phthalate on the basis of ethylene-vinyl acetate copolymer, the components are mutually coordinated, so that the composition obtains a wider viscosity change range and proper viscosity change rate, and simultaneously reduces the embrittlement characteristic of the composite material in the cooling process, thus obtaining the composition with high consistency with the temperature-viscosity change trend of an actual glass product.
The invention also provides application of the composition for simulating the viscosity characteristics of glass.
In one example, the composition that simulates the viscosity characteristics of glass is used as a mimic of glass at low temperature conditions, which are 75 ℃ to 150 ℃.
In one example, the method of application includes the steps of:
and heating the ethylene-vinyl acetate copolymer, petroleum resin and dibutyl phthalate to be molten, stirring, preparing mixed liquid and cooling.
In one example, the heating temperature is 170 ℃ to 190 ℃.
In one example, the stirring time is 1 to 2 hours.
In one example, the glass is suitable for use in soda lime glass, borosilicate glass, and aluminosilicate glass.
Soda-lime silicate glass, for short soda-lime glass, refers to glass with silica as the primary material and approximately 15% sodium oxide and 16% calcium oxide. The glass has low cost and easy molding, is suitable for large-scale production, and has the yield accounting for 90 percent of that of practical glass, such as common flat glass, bottles, cans, bulbs and the like, belonging to soda lime glass. Sodium oxide increases the thermal expansion coefficient of the glass and decreases the thermal stability, chemical stability and mechanical strength of the glass, so that the proportion cannot be excessively introduced, generally not more than 18%. Sodium oxide is generally introduced as soda ash in the production of glass. The main function of calcium oxide in glass is to increase the chemical stability and mechanical strength of glass, but when the content is higher, the crystallization tendency of glass is increased and the glass becomes brittle. The content of calcium oxide in the glass is generally not more than 12.5%. Typically introduced by calcite, limestone, chalk, precipitated calcium carbonate and like materials.
Borosilicate glass is a special glass material with low expansion rate, high temperature resistance, high strength, high hardness, high light transmittance, high thermal stability and high chemical stability, and the thermal expansion coefficient (0-300 ℃) is about 3.3+/-0.1 multiplied by 10 -6 The softening point reaches 820 ℃, and the temperature difference between cold and hot resistance reaches 150 ℃. Borosilicate glass can be made thin and transparent, the cup body and the cup bottom are integrally formed, the risk of explosion is avoided, and a heat-resistant glass water cup, a glass tea set and the like used in the household daily necessities industry belong to the borosilicate glass. The high borosilicate glass has good fire resistance, high physical strength, no toxic or side effect, high thermal stability, alkali resistance and acid resistance compared with common glass, thus being widely used in various fields of chemical industry, aerospace, military, families, hospitals and the like, being capable of being made into various products such as lamps, tableware, marking discs, telescope sheets, washing machine observation holes, microwave oven discs, solar water heaters and the like, and having good popularization value and social benefit.
The aluminosilicate glass is glass with silicon dioxide and aluminum oxide as main components, wherein the aluminum oxide content can reach more than 20%. The coordination number of the aluminum ion depends on the content of the alkali metal oxide. The aluminosilicate glass has better chemical stability, electrical insulation, mechanical strength and lower thermal expansion coefficient, but has high-temperature viscosity and correspondingly high melting temperature. The aluminosilicate glass has low expansion coefficient and good water resistance, and the viscosity of glass melt is increased sharply along with the temperature reduction, so that the aluminosilicate glass is suitable for forming glass fibers by spraying. The softening point is very high (about 900 c) compared to other glasses. Is suitable for manufacturing alkali-free glass fiber, chemical glass pipeline, water meter glass and the like. When the content of alumina is up to above 20%, the glass has high melting temperature, bubbles and stripes in the glass are not easy to be removed, mechanical stirring is preferably adopted during melting, surface active auxiliary agents such as sodium antimonate, jiao Liu sodium antimonate and the like are usually added, and platinum-rhodium alloy is selected as the materialIs a crucible material. Aluminum anomalies are present in aluminosilicate glasses, the structural state of aluminum oxide varying with the relative amounts of aluminum oxide and alkali metal oxide, and are commonly used to tailor the performance of such glasses. The aluminosilicate glass has heat resistance and low thermal expansion coefficient (30-60 multiplied by 10) -7 High temperature), electrical insulation, good mechanical properties, good water resistance and the like. The glass fiber can be used for manufacturing chemical pipe fittings, bottles, liquid level meters, bulletproof and explosion-proof glass, microcrystals, fluorescent screens, heat-resistant glass and the like, is suitable for being sprayed to manufacture glass fibers, and is widely applied to the fields of chemical industry, electronics, aviation, aerospace and the like.
In one example, the chemical raw material composition of the aluminosilicate glass comprises SiO in parts by mass 2 59 parts to 62 parts, B 2 O 3 1 to 3 parts of Al 2 O 3 19-20 parts, li 2 O4-5 parts, na 2 O9-10 parts, K 2 0 to 1.5 parts of O, 1 to 3 parts of MgO and ZrO 2 0-2 parts.
In one example, the viscosity change trend of the simulant at 75 ℃ to 150 ℃ is consistent with the viscosity change trend of the alkali aluminosilicate glass at 900 ℃ to 1450 ℃.
The temperature-viscosity change trend of the composition obtained by the method has high consistency with that of an actual glass product, and can be used for physical model research of design and production of glass melting furnace processing equipment.
The following are specific examples.
Example 1
The present example provides a composition for simulating glass viscosity characteristics, comprising: 50 parts of ethylene-vinyl acetate resin, 42 parts of petroleum resin and 8 parts of dibutyl phthalate.
The simulation method of the composition for simulating the viscosity characteristics of the glass is as follows:
50 parts of ethylene-vinyl acetate resin, 42 parts of petroleum resin and 8 parts of dibutyl phthalate are respectively weighed, placed in a heating furnace, heated to 180 ℃, continuously stirred, kept at constant temperature for 60 minutes, and then uniform liquid is obtained and cooled. During cooling, the viscosity values of the compositions were measured using an NDJ-8S rotational viscometer at a temperature range of 75 ℃ to 150 ℃ and the results are shown in table 1. And (3) performing Fulcher equation fitting according to the temperature and the corresponding viscosity value, wherein the fitting result is as follows:
lgη＝0.287+108.00/(T-51.82)。
TABLE 1
| Temperature/. Degree.C | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 |
| Viscosity/poise | 88346 | 13168 | 3483 | 1305 | 614 | 338 | 208 | 139 |
Table 1 (subsequent)
| Temperature/. Degree.C | 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 |
| Viscosity/poise | 99 | 74 | 58 | 47 | 38 | 32 | 28 | 24 |
Example 2
The present example provides a composition for simulating glass viscosity characteristics, comprising: 60 parts of ethylene-vinyl acetate resin, 30 parts of petroleum resin and 10 parts of dibutyl phthalate.
The simulation method of the composition for simulating the viscosity characteristics of the glass is as follows:
respectively weighing 60 parts of ethylene-vinyl acetate resin, 30 parts of petroleum resin and 10 parts of dibutyl phthalate, placing in a heating furnace, heating to 180 ℃, continuously stirring, keeping the temperature for 60 minutes, obtaining uniform liquid, and cooling. During the cooling process, the viscosity values of the composite material at 75-150 ℃ were measured using an NDJ-8S rotational viscometer, and the results are shown in table 2. And (3) performing Fulcher equation fitting according to the temperature and the corresponding viscosity value, wherein the fitting result is as follows:
lgη＝-1.19+699.00/(T+57.67)。
TABLE 2
| Temperature/. Degree.C | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 |
| Viscosity/poise | 11987 | 7715 | 5122 | 3496 | 2446 | 1751 | 1280 | 953 |
Table 2 (subsequent)
| Temperature/. Degree.C | 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 |
| Viscosity/poise | 721 | 555 | 433 | 342 | 274 | 222 | 182 | 150 |
Example 3
The present example provides a composition for simulating glass viscosity characteristics, comprising: 70 parts of ethylene-vinyl acetate resin, 26 parts of petroleum resin and 4 parts of dibutyl phthalate.
The simulation method of the composition for simulating the viscosity characteristics of the glass is as follows:
70 parts of ethylene-vinyl acetate resin, 26 parts of petroleum resin and 4 parts of dibutyl phthalate are respectively weighed, placed in a heating furnace, heated to 180 ℃, continuously stirred, kept at constant temperature for 60 minutes, and then uniform liquid is obtained and cooled. During the cooling process, the viscosity values of the composite material at 75-150 ℃ were measured using an NDJ-8S rotational viscometer, and the results are shown in table 3. And (3) performing Fulcher equation fitting according to the temperature and the corresponding viscosity value, wherein the fitting result is as follows:
lgη＝0.41+86.85/(T-55.00)。
TABLE 3 Table 3
| Temperature/. Degree.C | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 |
| Viscosity/poise | 56559 | 7656 | 2018 | 779 | 381 | 219 | 140 | 98 |
Table 3 (subsequent)
Comparative example
In order to verify the consistency of the composition for simulating the glass viscosity characteristics provided by the invention and the temperature-viscosity variation trend of an actual glass product, a developed alkali aluminosilicate glass product is selected and named as a comparative example. The chemical raw material composition of the physical glass of the comparative example comprises the following components in parts by mass 2 59 parts to 62 parts, B 2 O 3 1 to 3 parts of Al 2 O 3 19-20 parts, li 2 O4-5 parts, na 2 O 9Parts to 10 parts, K 2 0 to 1.5 parts of O, 1 to 3 parts of MgO and ZrO 2 0-2 parts. And (3) carrying out high-temperature viscosity measurement on the comparative example by adopting an HTV-1600 type high-temperature rotational viscometer to obtain a temperature-viscosity change curve of the glass. To better compare the consistency of the compositions simulating the viscosity characteristics of the glasses prepared in examples 1-3 with the temperature-viscosity variation trend of the alkali aluminosilicate glass products of the comparative examples, the temperature-viscosity variation curves were equivalently processed. Taking example 2 as an example, when the viscosity of the comparative glass is 100 poise, the corresponding temperature is 1424 ℃, when the viscosity of example 2 is 100 poise, the corresponding temperature is 110 ℃, and the temperature multiplying power of the two is 12.945. And multiplying the temperature values corresponding to the different viscosities of the embodiment 2 by multiplying the multiplying power to obtain equivalent temperature values corresponding to the different viscosities of the embodiment 2. The equivalent treatment was also performed in this way for examples 1 and 3, and then the equivalent temperature-viscosity curves for examples 1 to 3 were compared with those for the comparative glass, and the results are shown in FIG. 1. As can be seen from the comparison, examples 1-2 are suitable as low temperature simulants for the comparative glass. Although the temperature-viscosity curve of example 3 and that of the comparative glass deviate greatly, example 3 has a wide range of viscosity variation and can be used as a low-temperature simulator for other glasses.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. A composition for simulating the viscosity characteristics of glass, comprising, in parts by weight: 50-70 parts of ethylene-vinyl acetate copolymer, 26-42 parts of petroleum resin and 4-10 parts of dibutyl phthalate;
the temperature-viscosity curve of the composition conforms to the Fulcher equation lgη=A+B/(T-T) 0 ) A is-1.19 to 0.41; b is 86.85-699.00; t (T) 0 -57.67-55.00; t is the temperature in degrees Celsius; η is the viscosity at temperature T in poise.
2. The glass viscosity characterization modeling composition of claim 1, wherein the composition comprises, in parts by weight: 50-65 parts of ethylene-vinyl acetate copolymer, 30-42 parts of petroleum resin and 5-10 parts of dibutyl phthalate.
3. The glass viscosity characterization modeling composition of claim 1, wherein the composition comprises, in parts by weight: 50-60 parts of ethylene-vinyl acetate copolymer, 30-40 parts of petroleum resin and 8-10 parts of dibutyl phthalate.
4. The glass viscosity characterization modeling composition of claim 1, wherein the molar content of vinyl acetate in the ethylene vinyl acetate copolymer is between 10% and 18%.
5. The glass viscosity characterization modeling composition of claim 1, wherein the ethylene vinyl acetate copolymer has a relative molecular mass of 2000 to 4000.
6. The glass viscosity characterization modeling composition of claim 1, wherein the ethylene vinyl acetate copolymer has a melting point of less than 160 ℃; and/or the ethylene-vinyl acetate copolymer has a viscosity of 60 poise to 50000 poise.
7. The composition for simulating glass viscosity characteristics according to any one of claims 1-6, wherein the composition has a viscosity ranging from 21 poise to 88346 poise at a temperature ranging from 75 ℃ to 150 ℃.
8. Use of a composition for simulating the viscosity properties of glass according to any one of claims 1 to 7 as a simulator for glass.
9. The use according to claim 8, wherein the glass has a range of applications such as soda lime glass, borosilicate glass and aluminosilicate glass.
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| CN1146462A (en) * | 1996-07-12 | 1997-04-02 | 中国石油天然气总公司石油勘探开发科学研究院 | Ternary copolymer containing polar group and composition thereof |
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| CN107418493A (en) * | 2017-04-26 | 2017-12-01 | 温州市富诚建设工程有限公司 | Repair a kind of glass fiber point position |
| CN107771196A (en) * | 2015-06-19 | 2018-03-06 | Hg3有限责任公司 | Based on the polymer with 35 DEG C of 40 DEG C of Tg and the film of the composition of plasticizer, the element comprising the film, its manufacture method and application thereof |
| CN111018346A (en) * | 2019-12-31 | 2020-04-17 | 咸宁南玻光电玻璃有限公司 | Low-viscosity high-alumina glass and preparation method and application thereof |
| CN114395261A (en) * | 2022-02-25 | 2022-04-26 | 北京工业大学 | Organic simulant meeting high-temperature viscosity gradient characteristic in inorganic glass |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101524588B1 (en) * | 2013-12-04 | 2015-06-01 | 한국수력원자력 주식회사 | Vitrification compositions and vitrification method of low-level radioactive wastes |
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| CN1146462A (en) * | 1996-07-12 | 1997-04-02 | 中国石油天然气总公司石油勘探开发科学研究院 | Ternary copolymer containing polar group and composition thereof |
| CN107771196A (en) * | 2015-06-19 | 2018-03-06 | Hg3有限责任公司 | Based on the polymer with 35 DEG C of 40 DEG C of Tg and the film of the composition of plasticizer, the element comprising the film, its manufacture method and application thereof |
| CN106753057A (en) * | 2016-12-05 | 2017-05-31 | 林进柱 | A kind of method of footwear material waste recovery Hot-melt adhesives for shoemaking |
| CN107418493A (en) * | 2017-04-26 | 2017-12-01 | 温州市富诚建设工程有限公司 | Repair a kind of glass fiber point position |
| CN111018346A (en) * | 2019-12-31 | 2020-04-17 | 咸宁南玻光电玻璃有限公司 | Low-viscosity high-alumina glass and preparation method and application thereof |
| CN114395261A (en) * | 2022-02-25 | 2022-04-26 | 北京工业大学 | Organic simulant meeting high-temperature viscosity gradient characteristic in inorganic glass |
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