CN109399937A - A kind of glass with low dielectric constant powder and preparation method thereof - Google Patents

Abstract

The present invention discloses a kind of glass with low dielectric constant powder, by weight percentage includes: 62~72% SiO₂, 0.1~10% Al₂O₃, 23~32% B₂O₃, 0~1% Li₂O, 0~0.5% Na₂O, 0~1.5% K₂O, 0~2% CaO, 0~2% MgO, 0~2% BaO, 0~2% TiO₂, 0.5~3% CaF₂And 0.1~4% NaCl or SnO；Wherein Li₂O、Na₂O and K₂O adds up to weight percent 0~3%, and CaO, MgO and BaO add up to weight percent 0~3%；It can be prepared by glass powder of the present invention by the method for ingredient, melted, water quenching and ball milling；Glass powder of the present invention has the characteristics that dielectric constant is low, dielectric loss is small, thermal stability is high, meets electronics industry requirement, and preparation method is simple, at low cost, is suitble to large-scale industrial production.

Description

A kind of glass with low dielectric constant powder and preparation method thereof

Technical field

The present invention relates to electronic glass technical field, specifically a kind of glass with low dielectric constant powder and preparation method thereof.

Background technique

With the high speed development of electronic industrial technology, the miniaturization of electronic equipment is miniaturized into as one of trend of development, Wave frequency used in transmission process can achieve MHz and GHz level, the smaller then signal of the dielectric constant of material Propagation rate it is faster；Smaller then its propagation loss under fixed frequencies of propagation of the dielectric tangent value of material is with regard to smaller.Therefore, Just need seal glass that there is lower dielectric constant and dielectric loss.

Low dielectric glass has lower dielectric constant and dielectric loss, they are basically unchanged with test temperature and frequency. Low dielectric glass is often used as high voltage insulating materials, has good high voltagehigh frequency insulating properties.In recent years, integrated circuit is integrated Degree improves rapidly, and the operating frequency ranges such as radio frequency connector, microwave device also greatly improve, in order to reduce thus bring impedance Delay and power loss, other than using low resistivity metal, it is important that reduce the parasitic capacitance of dielectric layer.Capacitor C and Jie Electric constant ε is directly proportional, and advanced low-k materials can be used and make connected medium, reduces impedance delay, to meet integrated circuit hair The needs of exhibition.

Low dielectric glass is exactly a kind of highly desirable candidate material, has commercioganic demand property and following tendency.Tool For body, glass with low dielectric constant is played in Electronic Packaging such as protection circuit, isolated insulation and the effects of prevent distorted signals. The low-k seal glass used under the conditions of high-frequency microwave is mainly used for module, the microwave signal of component and control letter Number input and output, therefore it is required that this glass requires low dielectric constant and low dielectric loss.Low dielectric constant It is the relaxation and cross jamming in order to reduce signal, and low dielectric loss is to reduce the heat consumption under high frequency and big resistivity Excessively, necessary to preferably radiating.

Summary of the invention

The purpose of the present invention is to provide a kind of glass with low dielectric constant powder and preparation method thereof, which has dielectric The features such as constant is low, dielectric loss is small, thermal stability is high meets electronics industry requirement, and preparation method is simple, cost It is low, it is suitble to large-scale industrial production.

The technical solution adopted by the present invention to solve the technical problems is:

A kind of glass with low dielectric constant powder, the glass powder include: 62~72% SiO by weight percentage₂, 0.1~10% Al₂O₃, 23~32% B₂O₃, 0~1% Li₂O, 0~0.5% Na₂O, 0~1.5% K₂O, 0~2% CaO, 0~2% MgO, 0~2% BaO, 0~2% TiO₂, 0.5~3% CaF₂And 0.1~4% NaCl or SnO；Wherein Li₂O、Na₂O with K₂O adds up to weight percent 0~3%, and CaO, MgO and BaO add up to weight percent 0~3%.

Also a kind of preparation method of glass with low dielectric constant powder of the present invention, comprising the following steps:

S1, according to the above scheme described in weight percent prepare batch, batch is uniformly mixed；

S2, uniformly mixed batch is melted, obtains fining glass liquid；

S3, it will be taken out after glass metal in deionized water water quenching, it is dry, obtain vitreum；

S4, by vitreum ball milling powdering, and cross 300 meshes, obtain glass with low dielectric constant powder.

The beneficial effects of the present invention are: SiO₂It is that glass network generates body, content raising advantageously reduces dielectric constant, but Content is too high to will appear that viscosity of glass metal is big, fusing is difficult；CaO can reduce the high temperature viscosity of glass metal, promote glass metal Fusing and clarification, but dosage excessively will increase the tendency towards devitrification of glass, and lead to the increase of glass dielectric constant, therefore introduce suitable When MgO adjust.By improving B₂O₃Content achieve the purpose that improve fiber dielectric properties, and be good fluxing agent, The high-temperature viscosity of glass, but B can be effectively reduced₂O₃Too high levels, can directly result in glass fibre mechanical property reduce, The problems such as water resistance is deteriorated, so the present invention makes B₂O₃Content control in reasonable range；CaF₂As the fluxing of glass Agent can be improved and fill gap between atom, have strong elecrtonegativity, reduces electronics and ionic polarizability in material, reduces dielectric Constant.Selection NaCl or SnO can achieve the purpose that preferable fining glass.The dielectric of glass with low dielectric constant powder of the invention Constant and dielectric loss are lower, and when frequency is 1MHz, dielectric constant is 3.6 ~ 4.3, and dielectric tangent is 3 × 10^-4~9×10^-4。

Specific embodiment

The present invention provides a kind of glass with low dielectric constant powder, and the glass powder includes: 62~72% by weight percentage SiO₂, 0.1~10% Al₂O₃, 23~32% B₂O₃, 0~1% Li₂O, 0~0.5% Na₂O, 0~1.5% K₂O, 0~2% CaO, 0~2% MgO, 0~2% BaO, 0~2% TiO₂, 0.5~3% CaF₂And 0.1~4% NaCl or SnO；Its Middle Li₂O、Na₂O and K₂O adds up to weight percent 0~3%, and CaO, MgO and BaO add up to weight percent 0~3%.

Also a kind of preparation method of glass with low dielectric constant powder of the present invention, comprising the following steps:

S1, according to the above scheme described in weight percent prepare batch, by batch in batch mixer mixing 2~24 hours, It is sufficiently mixed uniformly；

S2, it uniformly mixed batch is put into crucible is placed in electric furnace, electric furnace is warming up to 1460~1750 DEG C, and keep the temperature 60~180 minutes, batch is melted, obtains clear glass metal；

S3, it will be taken out after glass metal in deionized water water quenching, it is dry, obtain vitreum；

S4, vitreum is put into ball milling 48~72 hours in ball mill, obtains vitreum after 300 meshes by ball milling powdering To glass with low dielectric constant powder.

In order to which more intuitively the present invention is explained, six groups of embodiments are listed in a tabular form below, and The testing result of each group embodiment glass powder.

Table 1

Dielectric constant in table 1 uses ASTM D150 testing standard, obtain measuring under 1MHz frequency the dielectric constant of sample with Dielectric loss.

The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form；Appoint What those skilled in the art, without departing from the scope of the technical proposal of the invention, all using the side of the disclosure above Method and technology contents make many possible changes and modifications to technical solution of the present invention, or are revised as the equivalent reality of equivalent variations Apply example.Therefore, anything that does not depart from the technical scheme of the invention according to the technical essence of the invention do above embodiments Any simple modification, equivalent replacement, equivalence changes and modification, all of which are still within the scope of protection of the technical scheme of the invention.

Claims (2)

1. a kind of glass with low dielectric constant powder, which is characterized in that the glass powder includes: 62~72% by weight percentage SiO₂, 0.1~10% Al₂O₃, 23~32% B₂O₃, 0~1% Li₂O, 0~0.5% Na₂O, 0~1.5% K₂O, 0~2% CaO, 0~2% MgO, 0~2% BaO, 0~2% TiO₂, 0.5~3% CaF₂And 0.1~4% NaCl or SnO；Its Middle Li₂O、Na₂O and K₂O adds up to weight percent 0~3%, and CaO, MgO and BaO add up to weight percent 0~3%.

2. a kind of preparation method of glass with low dielectric constant powder, which comprises the following steps:

S1, prepare batch by weight percent described in claim 1, batch is uniformly mixed；

S2, uniformly mixed batch is melted, obtains fining glass liquid；

S3, it will be taken out after glass metal in deionized water water quenching, it is dry, obtain vitreum；

S4, by vitreum ball milling powdering, and cross 300 meshes, obtain glass with low dielectric constant powder.