443 results about "Lead glass" patented technology

The invention discloses electric conductive silver paste and a manufacturing method of the electric conductive silver paste. The electric conductive silver paste comprises, by mass percentage, 35 - 65 % of micron-sized silver powder, 1-10 % of nanometer-sized silver powder of or 1-20 % of nanometer-sized silver and other metal alloy powder, and 1-10 % of an organic carrier; for ceramics, solar cell silver paste comprises 2-15 % of unleaded glass powder, each component is manufactured in parts, weighed, mixed and stirred or mixed and rapidly scattered, and ultrasonic-vibrated or fine adjusted of viscosity of solvent, and therefore the electric conductive silver paste is obtained. Due to the fact that the nanometer-sized silver powder or the nanometer-sized silver alloy powder is mixed with the micron-sized silver powder, intensity of conductivity and a circuit is improved, adhesive force of crushing resistance and a base plate is improved, at the same time unleaded slurry good in thixotropy, low in contacting resistance and low in piece-needed slurry amount replaces lead slurry materials, the electric conductive silver paste is used for manufacturing crystalline silicon solar cells, improves photoelectric conversion efficiency, accords with environmental-protection ideas, and can be produced in large scales continuously.

The invention provides a lead-free silver conductive paste used for positive electrode of solar battery and a preparation technique thereof. The paste comprises the following materials by weight percentage: 65 to 85 percent of silver powder, 2 to 8 percent of lead-free glass powder, 10 to 25 percent of organic carrier and 0.1 to 3 percent of additive. The paste adopts the lead-free glass powder of Si-B-Bi-Al-Ti-Zn-O series to replace the traditional lead-bearing glass powder; and the series glass powder has lower softening point, can lead the silver electrode to have good adhesive force after sintering, and ensures the silver electrode to be well contacted with a silicon substrate. In addition, zinc resinate is used as the additive in the invention, not only can well improve the printing performance of the paste, but also can improve the electrical property of the electrode.

The present invention aims at providing a lead-free glass composition that can be soften and flowed at a firing temperature that is equal to or lower than that of conventional low melting point lead glass. Furthermore, the present invention aims at providing a lead-free glass composition having fine thermal stability and fine chemical stability in addition to that property. The lead-free glass composition according to the present invention is characterized by comprising at least Ag₂O, V₂O₅ and TeO₂ when the components are represented by oxides, wherein the total content ratio of Ag₂O, V₂O₅ and TeO₂ is 75 mass % or more. Preferably, the lead-free glass composition comprises 10 to 60 mass % of Ag₂O, 5 to 65 mass % of V₂O₅, and 15 to 50 mass % of TeO₂.

Non-lead glass consisting essentially of, as represented by mol %, from 20 to 50% of B₂O₃, from 5 to 35% of SiO₂, from 10 to 30% of ZnO, from 0 to 10% of Al₂O₃, from 0 to 10% of SrO, from 6 to 16% of BaO, from 2 to 16% of Li₂O, from 0 to 10% of Na₂O+K₂O, from 0 to 9% of Bi₂O₃, and from 0 to 2% of CuO+CeO₂, wherein (B₂O₃+SiO₂+Al₂O₃)/(Bi₂O₃+BaO) is at least 3.25, and MgO+CaO is at most 8 mol %. Further, a plasma display device wherein transparent electrodes formed on a glass substrate constituting a front substrate, or electrodes formed on a glass substrate constituting a rear substrate, are covered by the non-lead glass.

Disclosed is a Pb-free glass composition for barrier ribs of a PDP, which includes from 20 to 70 wt % of ZnO; from 10 to 50 wt % of BaO; from 10 to 40 wt % of B₂O₃; from 0 to 20 wt % of P₂O₅; from 0 to 20 Wt % of SiO₂; from 0 to 20 wt % of Bi₂O₃; from 0 to 30 wt % of V₂O₅; from 0 to 10 wt % of one or more oxides selected from the group consisting of Na₂O, Li₂O, and K₂O; from 0 to 10 wt % of CaO; from 0 to 10 wt % of MgO; from 0 to 30 wt % of SrO; from 0 to 20 wt % of MoO₃; from 0 to 10 wt % of Al₂O₃; from 0 to 10 wt % of one or more oxides selected from the group consisting of Sb₂O₃, CuO, Cr₂O₃, As₂O₃, CoO, and NiO; and from 0 to 10 wt % of TiO₂, and a plasma display panel comprising the Pb-free glass barrier ribs prepared therefrom.

The invention discloses a heat treatment enhanced glass air cushion bed device, comprising an upper blowing device and an air cushion bed; wherein the upper blowing device and the inner part of the air cushion bed are hollow, and upper blowing device and the air cushion bed are respectively provided with at least one air inlet which is connected with an air duct of a blower, the upper blowing device and the air cushion bed are arranged up and down in parallel, the bottom surface of the upper blowing device is opposite to the top surface of the air cushion bed, and a plurality of air outlets are uniformly distributed on the top surface and the bottom surface, and a space for leading glass o pass through is kept between the top surface and the bottom surface. The device can eliminate all disadvantages of the glass with a transmission type cooling way, the purpose of realizing super-flat and spotless horizontal tempering glass is realized, and the surface quality of the tempering glass isgreatly improved.

The invention belongs to the technical field of an inorganic amorphous material, and particularly relates to a leadless, cadmium-free and strontium-free transparent colored glass component and a manufacture process thereof. The transparent colored glass component is characterized by only containing conventional oxides, such as SiO2, B2O3, ZnO, CaO, BaO, Na2O, K2O and the like without containing lead, cadmium or strontium which has great toxic effect. The invention has the advantages that: a decolorizing agent is added into the leadless, cadmium-free and strontium-free basic component to prepare a colorless transparent glass product; various coloring agents are added into the leadless, cadmium-free and strontium-free basic component to obtain the colored glass. Equipment or investment is not additionally increased, the glass product with good color, low softening point and long material property can be produced only by adopting existing raw material treatment, melting furnaces, hot melting furnaces, annealing furnaces, cold machining and other equipment, and the cost of the transparent colored glass is reduced by 2 to 4 times than that of conventional medium-lead and high-lead glass. The invention has wide application prospect.

The invention relates to a tellurium-containing glass material and a preparation method and an application thereof. The tellurium-containing glass material comprises, by molar percentage, 30% to 70% of TeO2, 2% to 25% of ZnO, 0% to 30% of Nb2O5, 0% to 25% of Bi2O3, 0% to 20% of BaO, 0% to 30% of WO3, 0% to 20% of MoO3 and 0% to 25% of SiO2. According to the tellurium-containing glass material, tellurite glass of a low melting temperature replaces traditional tellurium-containing glass, the stability of the glass material is enhanced by introducing a plurality of network outside bodies and network intermediates to form three-dimensional network frameworks simultaneously, and the obtained glass material is free of lead, low in melting and good in stability.

A spark plug having a glass seal formed from a first glass material and a second glass material. The first glass material has a glass transition temperature/softening point that is greater than the glass transition temperature/softening point of the second glass material. The first glass material and second glass material form a matrix and when combined with a filler have thermal expansion rates and properties the approximate leaded glass.

The invention discloses a leadless electrode silver paste for lightning protection ZnO piezoresistor and a preparation method thereof. The leadless electrode silver paste is mainly prepared by mixing and grinding conductive silver micropowder, inorganic additive, leadless glass powder and organic carrier according to a certain mass ratio. Strong interface binding force is formed by using Bi2O3-B2O3-Co2O3-ZnO-V2O5 system glass and lightning protection ZnO piezoresistor base body so as to realize lead free material. Adhesion force and weldability of the base body and the electrode are improved by adding inorganic bonder to the silver paste, so that the problem that silver film glass of below 30um overflows from electrode surface is solved. The preparation method is simple, and the product has the advantages of strong adhesion force, good weldability, high conductivity and stable electric performance and the like.

The invention discloses a method for preparing a high-radioactivity nuclear waste glass solidified base material. For a high-radioactivity waste liquid containing high concentration of sulfate radicals, the dissolubility of sulfur in a borosilicate melt is low, and as a result, sulfur is always a limiting factor for waste loading quantity. A separated yellow phase can be generated during founding and consequently the nuclide loading and isolating functions of a glass solidified body are damaged seriously. The method comprises the steps of: adjusting the chemical components of waste lead-containing glass; evenly mixing the components, melting the components for 2-4 hours at the temperature of 980-1100 DEG C so as to completely melt the components to form molten glass; pouring the molten glass in a mould for shaping at the temperature of 700-850 DEG C; and placing the shaped glass in an annealing furnace at the temperature of 400-550 DEG C and preserving heat for 1-3 hours, thereby obtaining the high-radioactivity nuclear waste glass solidified base material. According to the method, the novel radioactivewaste glass solidified base material is prepared from the waste lead-containing glass as a main raw material by adjusting the chemical components of the glass, so that the waste is turned to be profitable, the resource utilization of the lead-containing glass is realized, and the glass solidified body is good in stability and does not generate the yellow phase easily during founding.

An environmental protection lead free type of surface layer silver size used on PTC ceramic is mainly prepared by silver micro powder, lead free glass powder and organic carrier. The lead free glass powder is mainly composed of Bi2 O3 ,B2O3, ZnO, SiO2 , AI2 O3 and CuO.

The invention relates to conductive silver paste for a ceramic filter and a preparation method of the conductive silver paste. The conductive silver paste comprises the following components in parts by weight: 50-80 parts of metal silver powder, 2-5 parts of glass powder, 10-30 parts of an organic carrier, 1-3 parts of an organic additive and 1-10 parts of an organic solvent, wherein the glass powder is lead-free glass powder, the coefficient of thermal expansion is 110-120*10<-7>/DEG C, and the sintering temperature is 550-750 DEG C. The preparation method comprises the following steps: adding the organic carrier and the organic solvent into a mixer, adding the metal silver powder, the glass powder and the organic additive, fully mixing, transferring a mixture into a high-speed dispersionmachine, and uniformly dispersing at a high speed to obtain a conductive silver paste; and grinding the prepared conductive silver paste in a three-roller mill, and finely adjusting a roller to enable the fineness of the conductive silver paste to be less than 10mu m and the viscosity to be 30-50Pa.S, thereby obtaining the conductive silver paste for the ceramic filter. The conductive silver paste for the filter can form a conductive silver layer which is high in compactness, high in adhesive force, high in conductivity, good in weldability and stable in performance.

A non-lead glass for forming a dielectric, which consists essentially of, as represented by mol %, from 20 to 39% of SiO₂, from 5 to 35% of B₂O₃, from 2 to 15% of Al₂O₃, from 1 to 25% of CaO+SrO, from 5 to 25% of BaO, from 0 to 35% of ZnO, and from 0 to 10% of TiO₂+ZrO₂+SnO₂, provided that B₂O₃+ZnO is from 15 to 45%, and which does not contain alkali metal oxides, or contains such oxides in a total amount within a range of less than 1%. Further, a glass ceramic composition for forming a dielectric, which consists essentially of a Ba-containing compound powder and a powder of the above mentioned non-lead glass for forming a dielectric. Further, a dielectric obtained by firing the above glass ceramic composition for forming a dielectric.

The present invention relates to one kind of no-lead sealing glass powder for electrode coating and its preparation process. The no-lead sealing glass powder consists of Bi2O3 40-70 wt%, B2O3 0-30 wt%, Al2O3 0-15 wt%, ZnO 0-40 wt%, SiO2 0-15 wt%, MgO 0-20 wt%, and Li2O 0-5 wt%. Its preparation process includes the following steps: 1. compounding mixed material; 2. preheating the mixed material in an electric furnace and smelting in a quartz crucible; 3. tabletting the smelted glass liquid and grinding into powder in a ball mill; and 4. measuring thermal expansion coefficient and sealing temperature. It is used in coating electrodes in plasma display device, and may be also used in sealing glass, ceramic and metal parts.

The invention discloses vacuum fire-resistant glass. A glass original film in the vacuum fire-resistant glass is one of high-boron plate glass, high-boron toughened glass, caesium potassium fire-resistant glass, twin polishing wired glass, sodium calcium plate glass, sodium calcium toughened glass, Low-E plate glass and Low-E toughened glass, the vacuum fire-resistant glass is formed by compounding two kinds of the glass original film, a vacuum layer is formed between two sheets of glass, supporting objects fixed on the glass original film are evenly distributed in the vacuum layer, the thickness of the vacuum layer is 0.15-0.3mm, a ring of melting sealing layer formed by melting low-melting-point lead glass at the high temperature is arranged between glass, an air exhausting hole is arranged on the melting sealing layer, getter is arranged in the vacuum layer, and the getter is placed in grooves or holes arranged on the glass original film. The vacuum fire-resistant glass has functions of fireproofing, heat insulation and energy saving.

The invention relates to a method for accurately controlling the viscosity of molten state glass in a platinum channel, which is used for controlling the quality of TFT-LED glass substrate in a production process. The method specifically comprises the following steps: (1) additionally installing electrifying flanges in the platinum channel by areas and sections according to a technical route; (2) determining electric power according to the position of each section of platinum channel and maximum current magnitude needed in an electric heating process; (3) applying the controllable AC voltage to each section of platinum channel by flanges; (4) selecting and matching a current phase sequence which is matched with each common flange; (5) calculating and determining standard temperature value intervals of all the areas and the sections, and the power flow interval of the platinum channel corresponding to the standard temperature interval in the section; (6) setting a management circuit which is used for sampling the on-line temperature of all the sections and conducting the closed loop control on the voltage of the loading areas and sections. The method can ensure the technical target of molten glass which enters a forming procedure, save energy resources and have automatic operation.

It is an object of the present invention to provide an electrochemical sensor which can prevent occurrence of cracks at the welding portion between a support tube made of lead-free glass and a sensitive glass membrane or ceramics, and a method for manufacturing the same. The electrochemical sensor 100 has a configuration such that the sensitive glass membrane 2A is welded to the support tube 1 made of lead-free glass with a lead glass layer 3A between the sensitive glass membrane 2A and the support tube 1. According to the present invention, there is also provided the electrochemical sensor in which the ceramics 2B for a junction is welded to the support tube 1 made of lead-free glass with a lead glass layer 3B between the ceramics 2B and the support tube 1.

The present invention discloses a water injection and drainage full-automatic multisphere neutron spectrometer and a measurement method. A system comprises a water injection and drainage system, multiple layers of annular lead glass spherical shells, a spherical neutron detector and an analyzing and processing system. According to a neutron measurement place, the water injection and drainage full-automatic multisphere neutron spectrometer is installed, at measurement, the water injection and drainage system injects the water in the multiple layers of annular lead glass spherical shells orderly, thereby achieving the purpose of changing the thickness of a neutron moderator, and measuring the neutrons of different energy in an environment. According to the present invention, the water injection and drainage system carries out the full-automatic control on the different parameters of a single spherical detector, thereby achieving the multisphere detection purpose, solving the manufacturing complexity of a plurality of detection systems in a conventional multisphere system, reducing the manufacturing cost, at the same time, effectively avoiding the problems that the detectors in the conventional multisphere system influence each other and are inconsistent, and the overall carrying of the plurality of detectors is tedious.

The invention relates to a glass composite for back surface field aluminum paste of a solar battery, which is Bi-Si-B system glass of non-lead systems and comprises Bi2O3, SiO2, Al2O3, ZnO, B2O3 and CaO, and a modified additive comprises TiO2, ZrO2, V2O5, CaF, etc. The invention also relates to a method for preparing the glass composite for the back surface field aluminum paste of the solar battery. In the technical scheme of the invention, the provided glass composite for the back surface field aluminum paste of the solar battery utilizes the Bi-Si-B system glass of non-lead systems, thereby eliminating lead pollution in the glass composite, meanwhile, the glass composite has low-melting property equivalent to that of lead glass and good immersion property to silicon slices and aluminite powder, so that the prepared back surface field aluminum paste can form excellent ohmic contact with the silicon slices, has good performances of high adhesion force, low wrapping of battery plates and high battery conversion efficiency.

The embodiment of the present invention provides 360-degree transparent LED glass and a preparation method thereof. The 360-degree transparent LED glass comprises transparent conductive glass, a transparent intermediate film and transparent glass, wherein the transparent conductive metal coating layer side of the transparent conductive glass at least has one etching line whose depth is larger than the thickness of a transparent conductive metal coating layer, each of the etching line is at least provided with one LED flip wafer, the anode and cathode access points of the LED flip wafer are arranged at two sides of the etching line respectively, and the transparent intermediate film is arranged between the transparent conductive glass and the transparent glass. According to the 360-degree transparent LED glass provided by the invention, the wire layout and LED placement on a substrate are avoided, the 360-degree fully transparent light emission is truly realized, and the 360-degree transparent LED glass and the preparation method has the advantages of simple manufacture, low cost and environmental-friendliness.