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Low specific resistance glass and preparation thereof

A low-resistivity, glass-based technology, applied in the field of special performance glass, can solve the problems of glass volume resistivity reduction and other problems, and achieve the effects of environmental protection, high mechanical strength and good processability

Active Publication Date: 2009-07-08
TSINGHUA UNIV +1
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  • Description
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AI Technical Summary

Problems solved by technology

When the glass contains transition metal oxides, two or more valence metal ions coexist, so the glass has semiconductor behavior, and as a result, the volume resistivity of the glass decreases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1-6

[0025] Examples 1-6 composition formula and operating conditions are shown in Table 1 and Table 2 respectively.

[0026] The product properties of examples 1-6 are shown in Table 3.

[0027] Table 1 composition formula

[0028] Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 SiO 2 50 47 45 0 0 0 P 2 o 5 0 0 0 58 56 55 Fe 2 o 3 14 15 16 30 32.5 35 Na 2 o 30 29 28 0 0 0 BaO 0 0 0 3 3.5 4 AL 2 o 3 6 4 1 4 2 0 Bi 2 o 3 0 0 0 0 3 6 CaO 0 0 0 5 3 0 MnO 2 0 5 10 0 0 0

[0029] Table 2 Operating Conditions

[0030] Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Feeding temperature ℃ 1250 1230 1220 1050 1060 1080 Melting temperature °C 1450 1420 1400 1320 1325 1330 Annealing temperature ℃ 480 480 480 450 450 450

[0031] Table 3 product performance

[0032] ...

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PUM

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Abstract

The invention relates to a method for preparing low-resistivity glass, belongs to special glass technology and in particular relates to the technical field of detector glass. The method is characterized in that the low-resistivity glass is silicate-type low-resistivity glass mainly with SiO2 and phosphate-type low-resistivity glass mainly with P2O5; and the other compositions are Fe2O3, Al2O3, Na2O, MnO2 or BaO, Bi2O3 and CaO. The invention also provides a corresponding preparation method. At room temperature, the invention is the low-resistivity glass with volume resistivity of 10 omega.cm in order of magnitude. The particle counting rate of an MRPC detector made from the glass can reach 20kHz / cm; and the detector is widely applied to certain large-scale physical experiments.

Description

technical field [0001] The present invention relates to special performance glass, specifically a kind of volume resistivity (normal temperature) in 10 10 Low resistivity glass on the order of Ω-cm. Background technique [0002] Flat glass (that is, float glass) has a wide range of applications in various fields of the national economy and people's lives. With the development of science and technology, the application of flat glass in the field of scientific research is becoming more and more common. For example, the resistive plate chamber detector (RPC) and multi-gap resistive plate chamber (MRPC) detector developed in the 1990s both use flat glass as the main material. The volume resistivity (room temperature) of conventional glass is 10 12 ~10 13 Between Ω·cm, it can be considered as a semiconductor, and its conduction mechanism lies in the weak ionic conduction generated by the migration of monovalent alkali metal ions in the glass. The particle count rate of MRPC ...

Claims

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Application Information

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IPC IPC(8): C03C3/083
Inventor 王义李元景程建平赵宝福葛云程吕文雄
Owner TSINGHUA UNIV
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