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A low light transmittance privacy energy-saving float glass composition and preparation method thereof
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A technology of float glass and composition, which is applied in the field of privacy and energy-saving float glass composition and its preparation, which can solve the problems of reducing effect and achieve the effects of improving uniformity, improving absorption and blocking effect, and promoting clarification
Active Publication Date: 2018-04-06
南京安达玻璃技术有限公司
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The existing technology mainly reduces the total iron concentration in the glass to FeO by adding some reducing substances to increase the Fe content in the glass. 2+ content, thereby enhancing the absorption of infrared energy, such as the Chinese patent application with publication number CN 103951186 B "a batch material component for the production of high ferrous glass and its application", by adding a certain amount of simple Si, Si with Fe 2 o 3 The reaction generates FeO, thereby greatly increasing the Fe content in the glass 2+ However, elemental Si is easily oxidized to SiO in the process of float glass preparation 2 , reduce Si and Fe 2 o 3 The effect of the reaction to form FeO
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Embodiment 1 3
[0027] Example 1 Preparation of Ternary Metal Sulfide
[0028] The composition of zinc-tin-sulfur nanoparticles in the ternary metal sulfides of groups A-E is shown in the following table:
[0029] Raw material (m / m, %)
Group A
Group B
Group C
Group D
Group E
Zinc powder
50
45
40
50
50
Tin powder
35
40
40
35
35
Sulfur powder
15
15
20
/
15
[0030] Preparation of Group A Ternary Metal Sulfides:
[0031] (1) Take zinc powder, tin powder and sulfur powder and mix them in a polyurethane ball milling tank. Use absolute ethanol as the ball milling medium. The ratio of absolute ethanol to powder is 1:2. 2 Under the protection of, the ball mill was strengthened at 400r / min for 2h, placed in a vacuum carbon tube furnace, heated to 150℃, reacted for 0.5h, continued to heat up to 400℃, reacted for 0.5h, after the reaction, cooled to room temperature with the furnace to obtain zinc tin Sulfur nanoparticles;
[0032] (2) Take zinc stannate, add oleylamine, heat at 150℃ to dissolve zinc stannate t...
Embodiment 2
[0038] Example 2 Preparation of low light transmittance privacy energy-saving float glass composition:
[0039] (1) Weigh SiO according to the formula 2 , Na 2 O, CaO, MgO, Al 2 O 3 , Fe 2 O 3 , NiO and ternary metal sulfide, and the mixture is obtained after the components are fully mixed;
[0040] (2) Put the mixture obtained in step (1) into the kiln, and heat to 1500°C to melt and clarify to obtain molten glass;
[0041] (3) The molten glass obtained in step (2) is cooled to 1100° C. and then formed in a tin bath, and then annealed by an annealing pit, and cut to obtain a privacy and energy-saving float glass with high ferrous iron and low light transmission.
[0042] Refer to Example 2 for the preparation of Examples 3, 4 and Comparative Examples 1-4 with low light transmittance privacy and energy-saving float glass compositions.
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Abstract
The invention relates to a low-light-transmission privacy energy-saving float glass composition and a preparation method thereof. The glass is prepared from the following raw materials in percentage by weight: 65% to 78% of SiO2, 12% to 17% of Na2O, 7% to 13% of CaO, 0% to 7% of MgO, 0.5% to 2.5% of Al2O3, 0.5% to 1.2% of Fe2O3, 0.01% to 0.3% of NiO and 0.5% to 2% of ternary metal sulfides. The prepared glass has the ferrous content of 40% or more, the visible light transmission rate (LTA) of lower than 50%, the ultraviolet transmission rate (TUV) of lower than 10%, the infrared transmission rate (TIR) of lower than 15% and the sunlight direct transmission rate (TG) of lower than 20% and has relatively good energy-saving performance and anti-mildewing effect.
Description
Technical field [0001] The invention relates to a float glass, in particular to a privacy energy-saving float glass composition with low light transmission and a preparation method thereof. Background technique [0002] At present, new international glass technologies are developing in the five major fields of energy, materials, environmental protection, information, and biology, among which energy conservation is the current research focus. Especially in the automobile and construction industries, various energy-saving glass has gradually replaced traditional ordinary glass and become the mainstream trend. [0003] Privacy glass is a kind of colored glass that transmits gray, green or blue. By adding a certain colorant to the glass material, it reduces the transmission of solar heat through the glass. It is mainly used in the side windows and sunroofs of automotive glass. . Common colorants are mainly composed of Fe, Ti, Co, Cr and Ce. The addition of Fe can adjust the infrared ...
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