Low-melting glass containing nano zinc oxide and preparation thereof

Abstract

The invention discloses a glass binder containing nanometer zinc oxide and a preparation method thereof. The glass binder is characterized in that the weight percentages of raw materials are as follows: Bi2O3 is 50-80 percent; B2O3 is 5-40 percent; ZnO is 5-30 percent; Al2O3 is 0.1-10 percent; SiO2 is 0.1-10 percent; MgO is 0.1-10 perent; CaO is 0.1-10 percent; and CuO is 0.1-10 percent. The preparation method comprises the following steps: the raw materials are fully mixed, wherein, the nanometer zinc oxide is finally added and mixed for producing a mixture; a crucible is put into an electric furnace at the temperature of 1100-1400 DEG C for preheating for 12-18 minutes; the mixture is added into a quartz crucible for melting at the melting temperature of 1100-1400 DEG C and heat-preserving for 5-40 minutes; the melted glass slurry is poured into water, or is milled into powder by a ball mill after tabletting, or is casted into powder, slurry, rods, powder pressed billets and the like, all of which are required when sealing is carried out; and then the detection and the package are carried out. The invention has the advantages that the application forms can be the powder, the slurry, the rods, the powder pressed billets, and the like; the cost performance is high; and the market development prospect is wide.

Description

【Technical field】 [0001] The invention relates to the technical field of lead-free electronic glass, in particular to a low-melting-point glass containing nanometer zinc oxide and a preparation method thereof. 【Background technique】 [0002] Low melting glass is an advanced welding material. The material has low melting temperature and sealing temperature (<600°C), good heat resistance and chemical stability, high mechanical strength, and is widely used in electric vacuum and microelectronics technology, laser and infrared technology, High-energy physics, energy, aerospace, automobiles and many other fields. The mutual sealing between glass, ceramics, metal and semiconductor is realized. Applied products include cathode ray tube displays, vacuum fluorescent displays, plasma displays, vacuum glass, solar collector tubes, lasers, magnetic material heads and magnetic material films, etc. [0003] With the increasing awareness of human environmental protection, lead has be...

AI Technical Summary

Problems solved by technology

[0005] The currently used low-melt sealing glass often contains heavy metals such as Pb, Cd, Hg, etc., especially metal Pb. For example, the content of PbO in the current color picture tube screen and cone sealing glass powder is as high as 70%. Heavy metals can cause serious harm to the environment and the human body. On the one hand, glass with high lead content has poor chemical stability. When the discarded glass encounters water, acid rain, and atmospheric erosion, lead ions will gradually dissolve, which will easily lead to serious pollution of groundwater quality. , which poses a serious threat to human life, especially to children's brain development

On the other hand, in the production of lead glass, due to the dust in the batching process and the volatilization of lead in the glass melting process often cause harm to production workers and the environment, a large amount of manpower, material and financial resources are needed for comprehensive treatment.