Low-temperature fired lead-free glass frit, paste, and vacuum glass assembly using same
A glass frit and calcination technology, which is applied in the field of lead-free glass frit and paste, can solve the problems of tempered glass reinforcement disappearance, thermal expansion coefficient mismatch, and durability cannot be guaranteed, so as to achieve low crystallization tendency and ensure crystallization tendentious effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment
[0061] Manufacturing of glass frit
[0062] Glass frits having the composition ratios shown in Table 1 below were produced. The raw materials of each component were thoroughly mixed in a V-blender for 3 hours. Here, barium carbonate (BaCO 3 ) as a raw material for BaO, ammonium dihydrogen phosphate (NH 4 h 2 PO 4 ) used as P 2 o 5 raw materials. The rest of the ingredients used to make the frits are listed in Table 1. The mixed material is fully melted at 800-1000°C for one hour, and rapidly cooled in a chill roll to obtain cullet.
[0063] A ball mill is used to control the initial particle size of the cullet obtained through the above process, and then a jet mill is used to pulverize it for about one hour, and then the glass powder is passed through a 325-mesh sieve (ASTM C285-88) to control the particle size of the glass powder so that the remaining Less than 1 g of glass frit powder.
[0064] In Examples 1 to 3, only cullet was used to produce frit, and in Exam...
experiment example
[0072] Properties of the glass frits, pastes, and samples produced in Examples and Comparative Examples were measured, and the measurement results are listed in Table 2 below.
[0073] 1. Glass transition temperature (Tg)
[0074]The glass transition point was measured using a TMA instrument (TMA-Q400 TA instrument) at a heating rate of 10°C / min.
[0075] 2. Coefficient of thermal expansion (CTE(×10 -7 / °C))
[0076] The coefficient of thermal expansion was measured using a TMA instrument (TMA-Q400 TA instrument) at a temperature increase rate of 10°C / min.
[0077] 3. Hemisphere temperature
[0078] The temperature at which the powdery frit shrinks to the maximum and has a hemispherical shape is measured using a high temperature microscope at a temperature increase rate of 10°C / min.
[0079] 4. Water resistance
[0080] The sample was placed in a constant temperature bath filled with distilled water at 90° C., and when the sample was placed in the constant temperature bat...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More