CN113135668A - High-dielectric low-loss glass fiber and preparation method thereof - Google Patents
High-dielectric low-loss glass fiber and preparation method thereof Download PDFInfo
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- CN113135668A CN113135668A CN202110468795.9A CN202110468795A CN113135668A CN 113135668 A CN113135668 A CN 113135668A CN 202110468795 A CN202110468795 A CN 202110468795A CN 113135668 A CN113135668 A CN 113135668A
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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
- C03C13/00—Fibre or filament compositions
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
Abstract
The invention relates to a high-dielectric low-loss glass fiber and a preparation method thereof, wherein the high-dielectric low-loss glass fiber comprises the following components: 33.0 to 46.0 parts by mass of silicon oxide; 1.5 to 5.0 parts by mass of alumina; titanium oxide, 5.0 to 10.0 parts by mass; 0.5 to 4.0 parts by mass of zirconia; neodymium oxide of less than or equal to 2.5 parts by mass; iron oxide, less than or equal to 1.2 parts by mass; 31.0 to 53.0 parts by mass of alkaline earth metal oxide, the glass fiber produced by the raw materials realizes high dielectric constant of more than 9.0 and dielectric loss of less than 0.0035 under the high frequency of 1 to 7GHz, lowers the crystallization temperature of the glass fiber, lowers the crystallization capacity, ensures the transparency of the glass fiber, lowers the density of the glass fiber, and is beneficial to the miniaturization and portable application of products.
Description
Technical Field
The invention belongs to the technical field of glass fiber materials, and particularly relates to a high-dielectric low-loss glass fiber and a preparation method thereof.
Background
In order to meet the market demand, the development of electronic devices with miniaturization and high capacity is realized, and the electronic devices are convenient to carry, so that the development of dielectric materials with high energy storage density and low loss is required. The glass fiber used in the industry at present is E glass generally, the dielectric constant of the E glass is 6.5 generally, and the application development requirements of electronic equipment cannot be met.
In the current research on the high-dielectric glass fiber, on one hand, most experimental researches are tested and researched under the low frequency of 1MHz, and the dielectric constant can be changed along with the change of the frequency, and the dielectric loss can be correspondingly influenced, so that the glass fiber is not suitable for use under the high frequency; on the other hand, in the production process of glass fiber, it is required to avoid the generation of crystals and to improve the transparency of the glass fiber, so that it is necessary to conduct intensive research on how to reduce the crystallization temperature and reduce the crystallization ability.
Disclosure of Invention
The present invention is directed to solving at least one of the above problems
Therefore, the first purpose of the invention is to provide a glass fiber which has high dielectric constant, low dielectric loss and high transparency at high frequency of 1-7 GHz.
The second purpose of the invention is to provide a preparation method of the high-dielectric low-loss glass fiber.
In order to achieve the first object of the present invention, the present invention adopts a technical solution of providing a high dielectric low loss glass fiber, comprising: 33.0 to 46.0 parts by mass of silicon oxide; 1.5 to 5.0 parts by mass of alumina; titanium oxide, 5.0 to 10.0 parts by mass; 0.5 to 4.0 parts by mass of zirconia; neodymium oxide of less than or equal to 2.5 parts by mass; iron oxide, less than or equal to 1.2 parts by mass; 31.0 to 53.0 parts by mass of an alkaline earth metal oxide.
In addition, the technical scheme provided by the invention can also have the following additional technical characteristics:
in the technical scheme, the high-dielectric low-loss glass fiber comprises 38.0 to 43.0 parts by mass of silicon oxide; 2.0 to 3.0 parts by mass of alumina; titanium oxide, 5.0 to 10.0 parts by mass; 1.0 to 2.5 parts by mass of zirconia; 1.0 to 2.5 parts by mass of neodymium oxide; iron oxide, less than or equal to 1.2 parts by mass; 35.5 to 47.0 parts by mass of an alkaline earth metal oxide.
In any of the above technical solutions, the alkaline earth metal oxide is: 1.0 to 4.0 parts by mass of calcium oxide; 4.0 to 9.0 parts by mass of strontium oxide; 26.0 to 40.0 parts by mass of barium oxide.
In any of the above embodiments, the alkaline earth metal oxide is: 1.5 to 3.0 parts by mass of calcium oxide; 4.0 to 9.0 parts by mass of strontium oxide; 30.0 to 35.0 parts by mass of barium oxide.
In any one of the above embodiments, the sum of the addition amount of strontium oxide and the addition amount of barium oxide is 38.0 parts by mass to 44.0 parts by mass.
In any of the above embodiments, the ratio of the amount of iron oxide added to the amount of titanium oxide added is in the range of 0.16 or less.
In order to achieve the second object of the present invention, the present invention provides a method for preparing a high dielectric low loss glass fiber, comprising:
weighing and mixing the raw materials according to the mass parts of the raw materials of the high-dielectric low-loss glass fiber in any scheme; putting the raw materials into a platinum crucible, and melting at 1350-1450 ℃ to obtain glass liquid; and drawing the molten glass at 1150-1200 ℃ to obtain the glass fiber.
Compared with the prior art, the invention has the advantages and beneficial effects that:
the glass fiber produced by the raw materials in parts by mass has the advantages that the high dielectric constant is larger than 9.0 and the dielectric loss is less than 0.0035 under the high frequency of 1-7GHz, the crystallization temperature of the glass fiber is reduced, the crystallization capacity is reduced, the transparency of the glass fiber is ensured, the density of the glass fiber is reduced, and the miniaturization and portable application of products are facilitated.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is one of a flow chart of steps in some embodiments of the invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail with reference to specific embodiments. It should be noted that the technical solutions and features in the technical solutions of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific techniques disclosed below.
The technical solutions of the present invention will be described below with reference to specific embodiments, and the described embodiments are only a part of embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person skilled in the art on the basis of the present invention shall fall within the scope of protection of the present invention without making any creative effort.
The technical scheme of the invention provides a high-dielectric low-loss glass fiber, which comprises the following components: 33.0 to 46.0 parts by mass of silicon oxide; 1.5 to 5.0 parts by mass of alumina; titanium oxide, 5.0 to 10.0 parts by mass; 0.5 to 4.0 parts by mass of zirconia; neodymium oxide of less than or equal to 2.5 parts by mass; iron oxide, less than or equal to 1.2 parts by mass; 31.0 to 53.0 parts by mass of an alkaline earth metal oxide.
By limiting the mass parts of the raw materials, the produced glass fiber has the properties of high dielectric constant and low dielectric loss at a high frequency of 1-7GHz, the crystallization temperature of the glass fiber is reduced, the crystallization capacity is reduced, the transparency of the glass fiber is ensured, the density of the glass fiber is reduced, and the miniaturization and portable application of the product are facilitated.
Specifically, the silica is included in the technical solution as a network forming body for forming glass, and it can be understood that the silica in the technical solution is silica, and the silica in the technical solution forms an irregular continuous network structure with a silicon-oxygen tetrahedron structure, and the structure has a high bond strength, is not easy to polarize under the action of an external electric field, is not easy to generate losses such as conductance and relaxation, and has a direct influence on factors such as dielectric constant, dielectric loss, thermal expansion coefficient, and the like of the glass fiber.
The technical scheme further limits the content of the silicon oxide to be 33.0 parts by mass to 46.0 parts by mass, when the content of the silicon oxide is lower than 33.0 parts by mass, the glass is not beneficial to forming, the viscosity is too low, the glass is easy to devitrify, and when the content of the silicon oxide is higher than 46.0 parts by mass, the dielectric constant of the glass fiber is reduced.
In some embodiments of the present disclosure, the content of the silicon oxide may also be 34.0 parts by mass, 39.7 parts by mass, 41.9 parts by mass, 42.1 parts by mass, 42.8 parts by mass, 43.9 parts by mass, 45.3 parts by mass, or the like.
The glass fiber in the technical scheme also comprises alumina, and understandably, the alumina in the technical scheme can be alumina which is used as a network intermediate, plays an important role in the stability of the glass fiber, improves the difference between the fiber forming temperature and the crystallization temperature, effectively reduces the crystallization tendency of the glass fiber, and improves the transparency of the glass fiber.
The technical scheme further limits the content of the alumina to be 1.5 to 5.0 parts by mass, when the content of the alumina is lower than 1.5 parts by mass, the chemical stability of the glass fiber is reduced, the use performance of the glass fiber is influenced, when the content of the alumina is higher than 5.0 parts by mass, the viscosity of the glass fiber is increased, and the crystallization tendency is increased.
In some embodiments of the present disclosure, the content of the alumina may also be 1.8 parts by mass, 2.0 parts by mass, 2.5 parts by mass, 2.6 parts by mass, 3.2 parts by mass, 3.8 parts by mass, 4.7 parts by mass, or the like.
In the technical scheme, the glass fiber also comprises zirconium oxide, and understandably, the zirconium oxide in the technical scheme is zirconium dioxide which is used as a network outer body and has low solubility in silicate glass, so that the viscosity of the glass can be remarkably increased, and the glass fiber is favorably formed.
The technical scheme further limits that the content of the zirconium oxide is 0.5 to 4.0 parts by mass, when the content of the zirconium oxide is lower than 0.5 part by mass, the viscosity of the glass fiber is reduced, and the glass fiber cannot be formed, and when the content of the zirconium oxide is higher than 4.0 parts by mass, the glass crystallization tendency and the crystallization temperature are increased, so that the viscosity of the glass fiber is too high, and the fiber is difficult to form.
In some embodiments of the present disclosure, the content of zirconia may also be 0.7 parts by mass, 0.9 parts by mass, 1.2 parts by mass, 2.3 parts by mass, 2.5 parts by mass, 3.2 parts by mass, 3.5 parts by mass, or the like.
In the technical scheme, the glass fiber also comprises alkaline earth metal oxide, and understandably, the alkaline earth metal oxide is calcium oxide, strontium oxide and barium oxide, on one hand, the alkaline earth metal oxide is taken as a network external oxide and plays a role in filling network gaps in a glass structure and has a good adjusting effect on the density of the glass fiber, on the other hand, the dielectric constant of the glass fiber is mainly related to ion polarization and ion mobility, and more free oxygen is provided by adding the alkaline earth metal oxide, so that oxygen ions greatly change electron clouds on an outer layer of cations, the polarization rate of the electron clouds is increased, and the dielectric constant is further improved.
Specifically, the content of calcium oxide is further limited to be 1.0 part by mass to 4.0 parts by mass, when the content of calcium oxide is less than 1.0, the density of the glass fiber is low, the usability of the glass fiber is reduced, and when the content of calcium oxide is more than 4.0 parts by mass, the dielectric constant is not favorably improved.
In some embodiments of the present disclosure, the content of calcium oxide may also be 1.2 parts by mass, 1.5 parts by mass, 1.6 parts by mass, 2.1 parts by mass, 2.2 parts by mass, 2.6 parts by mass, 3.2 parts by mass, or the like.
According to the technical scheme, the content of strontium oxide is further limited to be 4.0-9.0 parts by mass, when the content of strontium oxide is lower than 4.0 parts by mass, the repelling capability of negative divalent oxygen ions to electron clouds of positive divalent strontium ions is weaker, so that the influence of the negative divalent oxygen ions to the outer layer electron clouds of the positive divalent strontium ions is not large, the polarizability is lower, the dielectric constant is small, and when the content of strontium oxide is higher than 9.0 parts by mass, the dielectric constant is reduced, and meanwhile, the glass fiber generates a devitrification phenomenon and the density is increased.
In some embodiments of the present disclosure, the content of strontium oxide may also be 5.5 parts by mass, 6.8 parts by mass, 7.2 parts by mass, 7.7 parts by mass, 8.4 parts by mass, 8.8 parts by mass, 9.0 parts by mass, or the like.
The technical scheme further limits that the content of the barium oxide is 26.0 to 40.0 parts by mass, when the content of the barium oxide is lower than 26.0 parts by mass, the negative divalent oxygen ions have little influence on outer layer electron clouds of the positive divalent barium ions, the polarizability is lower, the dielectric constant is small, and when the content of the barium oxide is higher than 40.0 parts by mass, the mobility of the positive divalent barium ions is reduced, so that the dielectric constant is reduced.
In some embodiments of the present disclosure, the content of barium oxide may also be 29.5 parts by mass, 32.3 parts by mass, 33.5 parts by mass, 34.6 parts by mass, 34.8 parts by mass, 35.0 parts by mass, 36.1 parts by mass, or the like.
In the technical scheme, the sum of the addition amount of strontium oxide and the addition amount of barium oxide is further limited to be 38.0 parts by mass to 44.0 parts by mass, the addition amount of strontium oxide and barium oxide has a great influence on the dielectric constant and the density of the glass fiber, so that the sum of the addition amounts of strontium oxide and barium oxide needs to be limited, when the sum of the addition amounts of strontium oxide and barium oxide is less than 38.0 parts by mass, the dielectric constant is small, and when the sum of the addition amounts of strontium oxide and barium oxide is more than 44.0 parts by mass, the glass fiber is devitrified and the density is increased.
According to the technical scheme, through limiting the content of the alkaline earth metal oxide, the glass fiber is ensured to keep low density, meanwhile, the dielectric constant and the dielectric loss are high, especially, the sum of the addition amounts of strontium oxide and barium oxide is limited, under the condition of providing sufficient free oxygen, as the radius of the positive divalent barium ions is large, the interaction force between the excessive positive charges on the electron cores of the positive divalent barium ions and the electron cloud of the negative divalent oxygen ions is strong, the outer electron cloud of the positive divalent barium ions is greatly changed, the polarizability of the positive divalent barium ions is increased, the dielectric constant increase amount is high, and therefore the reduction of the dielectric constant caused by the reduction of the density of the glass fiber can be compensated.
The glass fiber in the technical scheme also comprises titanium oxide, and understandably, the titanium oxide in the technical scheme can be titanium dioxide which is used as a transition metal oxide, has a very high polarization effect and is used for improving the dielectric constant of the glass fiber.
The technical scheme further limits that the content of the titanium oxide is 5.0 to 10.0 parts by mass, when the content of the titanium oxide is lower than 5.0 parts by mass, the chemical stability of the glass fiber is reduced, and the dielectric constant is reduced, and when the content of the titanium oxide is higher than 10.0 parts by mass, the crystallization temperature is increased, so that the fiber is difficult to form.
In some embodiments of the present disclosure, the content of titanium oxide may also be 5.9 parts by mass, 7.5 parts by mass, 7.8 parts by mass, 8.1 parts by mass, 8.8 parts by mass, 9.2 parts by mass, 9.5 parts by mass, or the like.
In the technical scheme, the glass fiber further comprises ferric oxide, and understandably, the ferric oxide in the technical scheme is ferric oxide which is used as a crystal nucleating agent, so that the generation of a main crystal phase is promoted, the crystallization temperature is reduced, the crystallization capacity is reduced, in addition, ferric ions enter the glass fiber to modify the glass fiber, the dielectric constant is improved, and the dielectric loss is reduced.
The technical scheme further limits that the content of the ferric oxide is less than or equal to 1.2 parts by mass, and when the content of the ferric oxide is more than 1.2 parts by mass, part of ferric ions exist in tetrahedral coordination and are supplemented into a network structure as a network body ion structure, so that the glass fiber has a compact structure, the relaxation polarization is weakened, the displacement polarization is enhanced, and the dielectric constant is reduced.
In some embodiments of the present disclosure, the content of the iron oxide may also be 0.3 parts by mass, 0.5 parts by mass, 0.7 parts by mass, 0.8 parts by mass, 0.9 parts by mass, 1.1 parts by mass, 1.2 parts by mass, or the like.
The technical scheme further limits the proportion range of the addition amount of the iron oxide to the addition amount of the titanium oxide to be less than or equal to 0.16, and can ensure that the iron oxide and the titanium oxide can be used as crystal nucleating agents, and the addition ratio of the iron oxide to the titanium oxide can further limit the addition ratio of the iron oxide to the titanium oxide, so that the iron oxide and the titanium oxide can have good synergistic effect when being used as the crystal nucleating agents, the effective reduction of crystallization temperature is ensured, the crystallization capacity is reduced, and the dielectric constant is improved.
The glass fiber in the technical scheme further comprises neodymium oxide, understandably, the neodymium oxide in the technical scheme can be neodymium trioxide, the neodymium trioxide is added as a doping agent, under the condition that sufficient free oxygen exists, positive trivalent neodymium ions replace positive quadrivalent titanium ions with strong activity to enter the glass fiber, the internal structure of the glass fiber is modified, the chemical stability of the glass fiber is improved, the refractive index of the glass fiber is improved, the dielectric constant is improved, and the dielectric loss is reduced.
In the technical scheme, the content of the neodymium oxide is further limited to be less than or equal to 2.5 parts by mass, and when the content of the neodymium oxide is higher than 2.5 parts by mass, the addition of the neodymium oxide has small influence on the increase of the dielectric constant at the frequency of 1-7GHz, so that the dielectric constant is not favorably improved.
In some embodiments of the present disclosure, the content of neodymium oxide may also be 0.5 parts by mass, 0.8 parts by mass, 1.0 parts by mass, 1.4 parts by mass, 1.5 parts by mass, 2.1 parts by mass, 2.2 parts by mass, or the like.
In order to achieve the second object of the present invention, the present invention provides a method for preparing a high dielectric low loss glass fiber, comprising:
step S101: weighing and mixing the raw materials according to the mass parts of the raw materials of the high-dielectric low-loss glass fiber in any scheme;
step S102: putting the raw materials into a platinum crucible, and melting at 1350-1450 ℃ to obtain glass liquid;
step S103: and drawing the molten glass at 1150-1200 ℃ to obtain the glass fiber.
The preparation scheme of the high-dielectric low-loss glass fiber in the technical scheme is that raw materials are weighed and mixed according to the mass parts of the raw materials of the high-dielectric low-loss glass fiber in any scheme; putting the raw materials into a platinum crucible, and melting at 1350-1450 ℃ to obtain glass liquid; and drawing the molten glass at 1150-1200 ℃ to obtain the glass fiber, so that the glass fiber has all the beneficial effects of any one of the technical schemes, and the description is omitted.
Example 1
Weighing 43.9 parts by mass of silicon oxide, 2.6 parts by mass of aluminum oxide, 8.1 parts by mass of titanium oxide, 2.2 parts by mass of calcium oxide, 6.8 parts by mass of strontium oxide, 33.5 parts by mass of barium oxide, 1.2 parts by mass of zirconium oxide, 0.8 part by mass of neodymium oxide and 0.9 part by mass of iron oxide, uniformly mixing the materials, putting the materials into a platinum crucible, melting the materials at the temperature of 1350-.
Specifically, the glass fiber material mixed and melted according to the mass parts of the raw materials has the density of 3.39 g/cubic centimeter, the dielectric constant of 9.55 and the dielectric loss of 0.0035.
Example 2
Weighing 41.9 parts by mass of silicon oxide, 1.8 parts by mass of aluminum oxide, 7.5 parts by mass of titanium oxide, 1.6 parts by mass of calcium oxide, 7.7 parts by mass of strontium oxide, 35.0 parts by mass of barium oxide, 2.3 parts by mass of zirconium oxide, 1.5 parts by mass of neodymium oxide and 0.7 part by mass of iron oxide, uniformly mixing the materials, putting the materials into a platinum crucible, melting the materials at the temperature of 1350-.
Specifically, the glass fiber material mixed and melted according to the mass parts of the raw materials has the density of 3.44 g/cubic centimeter, the dielectric constant of 9.47 and the dielectric loss of 0.0034.
Example 3
39.7 parts by mass of silicon oxide, 3.2 parts by mass of aluminum oxide, 8.8 parts by mass of titanium oxide, 1.2 parts by mass of calcium oxide, 8.4 parts by mass of strontium oxide, 32.3 parts by mass of barium oxide, 3.2 parts by mass of zirconium oxide, 2.1 parts by mass of neodymium oxide and 1.1 parts by mass of iron oxide are weighed, the materials are uniformly mixed and then placed into a platinum crucible, melting is carried out at the temperature of 1350-.
Specifically, the glass fiber material mixed and melted according to the mass parts of the raw materials has the density of 3.48 g/cubic centimeter, the dielectric constant of 9.41 and the dielectric loss of 0.0033.
Example 4
42.1 parts by mass of silicon oxide, 4.7 parts by mass of aluminum oxide, 9.2 parts by mass of titanium oxide, 2.6 parts by mass of calcium oxide, 9.0 parts by mass of strontium oxide, 29.5 parts by mass of barium oxide, 0.7 part by mass of zirconium oxide, 1.0 part by mass of neodymium oxide and 1.2 parts by mass of iron oxide are weighed, the materials are uniformly mixed and then put into a platinum crucible, melting is carried out at the temperature of 1350-.
Specifically, the glass fiber material mixed and melted according to the mass parts of the raw materials has the density of 3.42 g/cubic centimeter, the dielectric constant of 9.36 and the dielectric loss of 0.0035.
Example 5
Weighing 34.0 parts by mass of silicon oxide, 3.8 parts by mass of aluminum oxide, 9.5 parts by mass of titanium oxide, 3.2 parts by mass of calcium oxide, 7.2 parts by mass of strontium oxide, 36.1 parts by mass of barium oxide, 3.5 parts by mass of zirconium oxide, 2.2 parts by mass of neodymium oxide and 0.5 part by mass of iron oxide, uniformly mixing the materials, putting the materials into a platinum crucible, melting the materials at the temperature of 1350-.
Specifically, the glass fiber material mixed and melted according to the mass parts of the raw materials has the density of 3.46 g/cubic centimeter, the dielectric constant of 9.22 and the dielectric loss of 0.0035.
Example 6
Weighing 45.3 parts by mass of silicon oxide, 2.0 parts by mass of aluminum oxide, 5.9 parts by mass of titanium oxide, 1.5 parts by mass of calcium oxide, 8.8 parts by mass of strontium oxide, 34.8 parts by mass of barium oxide, 0.9 part by mass of zirconium oxide, 0.5 part by mass of neodymium oxide and 0.3 part by mass of iron oxide, uniformly mixing the materials, putting the materials into a platinum crucible, melting the materials at the temperature of 1350-.
Specifically, the glass fiber material mixed and melted according to the mass parts of the raw materials has the density of 3.43 g/cubic centimeter, the dielectric constant of 9.14 and the dielectric loss of 0.0034.
Example 7
42.8 parts by mass of silicon oxide, 2.5 parts by mass of aluminum oxide, 7.8 parts by mass of titanium oxide, 2.1 parts by mass of calcium oxide, 5.5 parts by mass of strontium oxide, 34.6 parts by mass of barium oxide, 2.5 parts by mass of zirconium oxide, 1.4 parts by mass of neodymium oxide and 0.8 part by mass of iron oxide are weighed, the materials are uniformly mixed and then put into a platinum crucible, melting is carried out at the temperature of 1350-.
Specifically, the glass fiber material mixed and melted according to the mass parts of the raw materials has the density of 3.57 g/cubic centimeter, the dielectric constant of 9.68 and the dielectric loss of 0.0032.
Comparative example 1
Weighing 55.0 parts by mass of silicon oxide, 14.8 parts by mass of aluminum oxide, 0.3 part by mass of titanium oxide, 23.0 parts by mass of calcium oxide, 1.2 parts by mass of magnesium oxide, 5.0 parts by mass of boron oxide and 0.4 part by mass of fluorine, uniformly mixing the materials, putting the materials into a platinum crucible, melting at 1400-1500 ℃, annealing the melted sample at 630 ℃ to eliminate stress, cutting the sample into samples with the length of 2 mm, the width of 2 mm and the height of 35 mm, and testing at 1GHZ by using a network vector analyzer.
Specifically, the glass fiber material mixed and melted in the above raw material parts by mass had a dielectric constant of 6.63 and a dielectric loss of 0.0053.
The above is a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A high dielectric, low loss glass fiber, comprising:
33.0 to 46.0 parts by mass of silicon oxide;
1.5 to 5.0 parts by mass of alumina;
titanium oxide, 5.0 to 10.0 parts by mass;
0.5 to 4.0 parts by mass of zirconia;
neodymium oxide of less than or equal to 2.5 parts by mass;
iron oxide, less than or equal to 1.2 parts by mass;
31.0 to 53.0 parts by mass of an alkaline earth metal oxide.
2. The high dielectric, low loss glass fiber of claim 1, comprising:
38.0 to 43.0 parts by mass of silicon oxide;
2.0 to 3.0 parts by mass of alumina;
titanium oxide, 5.0 to 10.0 parts by mass;
1.0 to 2.5 parts by mass of zirconia;
1.0 to 2.5 parts by mass of neodymium oxide;
iron oxide, less than or equal to 1.2 parts by mass;
35.5 to 47.0 parts by mass of an alkaline earth metal oxide.
3. The high dielectric, low loss glass fiber according to claim 1, wherein the alkaline earth metal oxide is:
1.0 to 4.0 parts by mass of calcium oxide;
4.0 to 9.0 parts by mass of strontium oxide;
26.0 to 40.0 parts by mass of barium oxide.
4. A high dielectric low loss glass fiber as in claim 3, wherein said alkaline earth metal oxide is:
1.5 to 3.0 parts by mass of calcium oxide;
4.0 to 9.0 parts by mass of strontium oxide;
30.0 to 35.0 parts by mass of barium oxide.
5. The high-dielectric low-loss glass fiber according to claim 1, wherein the sum of the addition amount of strontium oxide and the addition amount of barium oxide is 38.0 to 44.0 parts by mass.
6. The high-dielectric low-loss glass fiber according to claim 1, wherein the ratio of the addition amount of iron oxide to the addition amount of titanium oxide is in the range of 0.16 or less.
7. The preparation method of the high-dielectric low-loss glass fiber is characterized by comprising the following steps:
weighing and mixing the raw materials according to the mass parts of the raw materials of the high-dielectric low-loss glass fiber as defined in any one of claims 1 to 6;
putting the raw materials into a platinum crucible, and melting at 1350-1450 ℃ to obtain glass liquid;
and drawing the molten glass at 1150-1200 ℃ to obtain the glass fiber.
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2021
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| CN103172269A (en) * | 2013-04-09 | 2013-06-26 | 中国计量学院 | High-dielectric constant glass fiber and preparation method thereof as well as high-dielectric constant copper-clad laminate |
| CN107382078A (en) * | 2017-09-07 | 2017-11-24 | 中材科技股份有限公司 | A kind of low-loss glass fibre of high-k |
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