Cangzhou Four Stars Glass Co., Ltd. |
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Chemical Resistance Neutral Glass Tube Good Electrical Performance
High mechanical strength. The relative molecular weight of plexiglass is about 2 million. It is a long-chain polymer compound, and the chains that form the molecules are very soft. Therefore, the strength of plexiglass is relatively high, and its tensile and impact resistance are 7~higher than ordinary glass. 18 times. There is a kind of plexiglass that has been heated and stretched, in which the molecular chains are arranged in a very orderly manner, which significantly improves the toughness of the material. Use nails to penetrate this plexiglass, even if the nail penetrates, there will be no cracks on the plexiglass. This kind of plexiglass will not break into pieces after being penetrated by a bullet. Therefore, the stretched plexiglass can be used as bulletproof glass, and also used as a cockpit cover on military aircraft.
1, rotation speed: in a centrifuge tube expansion process, the
rotational speed and diameter determined centrifugal force. When
the pipe diameter is constant, the higher the speed, the greater
the centrifugal force. Under the action of centrifugal force, the
larger the pipe diameter, the slower the speed. Thus, during the
pipe expansion rate should be used as the basis to the diameter of
the glass tube
2, the wall thickness is determined, and the corresponding
temperature. Heating and softening the pressure in the pipe
expansion process, the control diameter sizing device mainly
depends on a set of synchronous rotation of the glass tube, it
requires a wider range of speeds.
Material | COE 3.3 borosilicate glass | |
Main Composition | SiO2 | 80±0.5% |
B2O3 | 2.4±0.2% | |
Na2O+K2O | 4.3±0.2% | |
Chemical and Physical property | Coefficient of thermal expansion(20°C/300°C) | 3.3±0.1(10–6K–1) |
Softening point | 820±10°C | |
Melting point | 1260±20°C | |
heat resistance temperature | 525±15°C | |
Hydrolytic resistance at 98°C | ISO719-HGB1 | |
Hydrolytic resistance at 121°C | ISO720-HGA1 | |
Density at 20°C | 2.23g/cm3 | |
Acid resistance | ISO1776-1 | |
Alkali resistance | ISO695-A2 |