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Glass beads are fired by glass sand
2017/8/15 10:05:18 النقرات:

Glass beads are fired by glass sand. Depending on the size of the glass beads can be divided into glass beads (glass beads is a kind of glass beads, refers to the size of 1 mm below the solid sphere) and glass beads. By the use of punishment can be divided into reflective glass beads for sandblasting, shot peening with glass beads, glass bead, filled with glass beads. The reflective glass beads can be divided into protective screen with reflective glass beads and glass beads; according to the index points, can be divided into general and high refractive index the rate of glass beads. General refractive index is between 1.5-1.64, high refractive index is generally in 1.8-2.2. It is assumed that the refractive index of the glass beads, which is the most suitable for reflection, is the refractive index of 1.93, so that the refractive index can be satisfactorily refracted back to the parallel light, so the higher the refractive index, the better the effect of reflection. It can be divided into regular glass beads and irregular glass beads according to the shape. According to the color can be divided into colorful glass beads and colorless clear glass beads. Let's talk about the road reflection glass beads first.

Reflective glass beads for road use

It is a kind of reflective glass beads with glass sand (glass) is a kind of fine glass bead material by high temperature melting after which, under the microscope as spherical, colorless, transparent, refractive index is between 1.50-1.64, diameter from 75 microns to 1400 microns. So also called micro mirror glass beads. Now, the first domestic consumer routes for reflective glass beads are flame levitation and electrothermal melting.

As a reflective material in road marking (paint), road reflective glass beads can improve the anti reflection function of pavement marking paint and advance the safety of night driving, which has been given by the traffic departments of various countries. When the car is traveling at night, the lamp is on the symbolic line of a glass bead, and the light of the lamp can be reflected back in parallel so that the driver can see clearly the direction of the Trek and advance the safety of the night driving. Now, reflective glass beads used to be a substitute for reflective materials in road safety products

The road with reflective glass beads, first used in normal temperature, hot melt road marking paint guess, as a pre mixed material, can guarantee the marking period in his long time reflection; a surface spreading in marking construction, can play the role of immediate reflection.

Coated glass beads are divided into two types, one is a highway reflector, as the screen with reflective coated glass beads. The organic material is the use of a high function of glass beads to stop handling, weaken the dust phenomenon makes the surface of glass beads adsorption in the air. Because the micro beads coated rich specific coupling agent improved the micro adhesion beads and coating can prevent the part of fine glass beads coated stacked to guess. Because of the floatability of its function, it floats on the surface of paint when it is used. It has the largest surface area and can add more than 30%. Glass micro beads coating, the function is more excellent. In the often rain, fog, humid environment, has a very good reflection function

technical parameter

Appearance: colorless, transparent sphere, bright round, no significant bubbles or impurities.

Circle rate: circle rate is greater than or equal to 80% density: 2.4-2.6g/cm3 refractive index: Nd = 1.50

Ingredients: sodium calcium glass, SiO2 content > 70%

Some national standards:

Chinese standard GB/T 24722--2009 No.1, 2, 3;

Korean standard KSL 2521 No.1 and 2;

British standard BS6088, Class, A, and, B;

American Standard AASHTO M247 type 1 and type 2;

European standard EN1423 and EN1424;

Turkey standard TS EN1423;

New Zealand Standard NZS2009: 2002;

Taiwan standard CNS;

Japanese standard JIS R3301;

Australian standards Australian, Standard, A, B, C, D.

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