Semitransparent high haze opal glass for LED and preparation method thereof

An opalescent glass and translucent technology, applied in the field of translucent opalescent glass for LED and its preparation, can solve the problems of overflow, dazzling blue light, etc., and achieve the effects of long material property, improved production efficiency, and not easy to crystallize

CN105036551AInactive Publication Date: 2015-11-11DONGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-11-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides semitransparent high haze opal glass for an LED and a preparation method thereof. The semitransparent opal glass for the LED provided by the invention is characterized by comprising the following components by weight percent: 60-68% of SiO2, 0-4% of Al2O3, 6-10% of B2O3, 1-5% of ZnO, 0-3% of CaO, 0-2% of MgO, 6-13% of alkali metal oxide, 2-5% of fluoride and 1-5% of P2O5. The preparation method comprises the following steps: mixing all the components according to the proportion to prepare glass batch; fusing at 1450-1550 DEG C; casting for formation or drawing for formation; naturally cooling or naturally cooling after annealing, so as to obtain the semitransparent opal glass for the LED. According to the semitransparent opal glass series prepared through the preparation method, the light transmittance is guaranteed, and the problems that the LED light is dazzling and blue ray overflows are avoided; for a glass sheet with the thickness of 3 mm, the light transmittance is 2-10%, the haze value is 30-95, and the brightness is 60-80.
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Description

technical field

[0001] The invention belongs to the field of translucent opalescent glass tubes and the preparation thereof, in particular to a translucent opalescent glass for LEDs and a preparation method thereof. Background technique

[0002] Opalescent glass refers to the glass in which a large number of particles with a refractive index different from that of the main glass are dispersed in the glass. When light passes through the glass, it is opaque due to refraction or reflection of the particles. When the particle size is reduced to the order of magnitude of the incident visible light wavelength, diffraction opacification is also produced. These highly dispersed particles can be droplet phase produced by glass phase separation, precipitated crystals, unexhausted tiny bubbles, or even unmelted oxide particles. When the particle size is larger than the wavelength of the incident light, it produces Mie scattering and appears milky white. Opalescent glass is a kind of o...

Examples

Embodiment 1

[0026] A translucent opalescent glass for LEDs, consisting of the following components by mass percentage: SiO 2 64%, Al 2 o 3 2%, B 2 o 3 10%, ZnO4%, CaO1%, MgO1%, K 2 O2%, Na 2 O8%, Li2O1%, Na2SiF64%, P 2 o 5 3%.

[0027] The preparation method of the above-mentioned translucent opal glass for LED is as follows: mix the components in proportion to make a glass batch, melt at 1500°C for 3 hours, pull down at 1080°C to make a translucent opal glass tube, and anneal at 500°C 180min, natural cooling, that is, translucent opalescent glass for LED.

[0028] Such as figure 1 Shown is the SEM figure of the microscopic morphology of the translucent opalescent glass obtained in Example 1; figure 2 It is the XRD crystal phase spectrum of the translucent opalescent glass tube obtained in Example 1, which shows that it is phase-separated opalescent glass without devitrification. image 3 It is the photo of the translucent milky white glass tube obtained in Example 1.

[0029...

Embodiment 2

[0031] A translucent opalescent glass for LEDs, consisting of the following components by mass percentage: SiO 2 68%, Al 2 o 3 2%, B 2 o 3 8%, ZnO2%, CaO3%, MgO1%, alkali metal oxide K 2 O1%, Na 2 O7.5%, Li 2 O0.5, Na 2 SiF 6 3%, P 2 o 5 4%.

[0032] The preparation method of the above-mentioned translucent opalescent glass for LED is as follows: mix the components in proportion to make a glass batch, melt at 1550°C for 4 hours, pull down at 1100°C to make a translucent opalescent glass tube, and anneal at 550°C 120min, natural cooling, that is, translucent opalescent glass for LED.

[0033] The obtained translucent milky glass for LEDs has a thickness of 3 mm, a transmittance of 10%, a haze value of 30, and a whiteness of 60.