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Lead-free low-melting-point tinted glass and preparation process thereof

A technology of colored glass and preparation process, applied in glass manufacturing equipment, manufacturing tools, glass molding, etc., can solve the problems of exacerbating lead resource mining environment and human body harm, avoid pollution and bacterial reproduction, and improve chemical stability Sexuality and thermal stability, the effect of increasing stability

Pending Publication Date: 2018-01-12
安徽鑫民玻璃股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lead is a highly toxic substance. The poisoning dose of lead is only 1mg, and the lethal dose is 1g. The PbO content in most commercial low-melting glass is as high as 60%. harm

Method used

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  • Lead-free low-melting-point tinted glass and preparation process thereof
  • Lead-free low-melting-point tinted glass and preparation process thereof
  • Lead-free low-melting-point tinted glass and preparation process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A preparation process for lead-free low-melting colored glass, comprising the following steps:

[0030] 1) Ingredients: Weigh the raw materials according to the following composition proportions:

[0031] SiO 2 55g;Al 2 o 3 1.5g; B 2 o 3 2g; CaO 7g; BaO 1.2g; MgO 3g; 2 O 14g; K 2 O 3g; CuO 0.5g.

[0032] 2) Mixing: Put the weighed raw materials into a grinder for mixing and grinding until they are evenly mixed, then add 35mL hydrochloric acid aqueous solution to obtain a slurry; dry the slurry at 50°C to obtain a batch; wherein, the hydrochloric acid aqueous solution The mass concentration is 10%.

[0033] 3) Melting: Put the batch material into a platinum crucible, and then put the platinum crucible with the batch material into a resistance furnace for heating. The heating process is: from room temperature to 400°C, with a heating rate of 1.6°C / min , heat preservation for 1h; from 400°C to 700°C, the heating rate is 1.6°C / min, and heat preservation for 30mi...

Embodiment 2

[0038] A preparation process for lead-free low-melting colored glass, comprising the following steps:

[0039] 1) Ingredients: Weigh the raw materials according to the following composition proportions:

[0040] SiO 2 45g;Al 2 o 3 2g; B 2 o 3 3g; CaO 8g; BaO 2g; MgO 4g; 2 O 13g; K 2 O 5g; Co 2 o3 0.4g.

[0041] 2) Mixing: Put the weighed raw materials into a grinder for mixing and grinding until they are evenly mixed, then add 30mL hydrochloric acid aqueous solution to obtain a slurry; then dry the slurry at 40°C to obtain a batch; among them, hydrochloric acid The mass concentration of the aqueous solution is 10%.

[0042] 3) Melting: Put the batch material into a platinum crucible, and then put the platinum crucible with the batch material into a resistance furnace for heating. The heating process is: from room temperature to 400°C, with a heating rate of 1.6°C / min , heat preservation for 1h; from 400°C to 700°C, the heating rate is 1.6°C / min, and heat preservat...

Embodiment 3

[0047] A preparation process for lead-free low-melting colored glass, comprising the following steps:

[0048] 1) Ingredients: Weigh the raw materials according to the following composition proportions:

[0049] SiO 2 63g;Al 2 o 3 3g; B 2 o 3 4.5g; CaO 7g; BaO 4g; MgO 5g; 2 O 15g; K 2 O 4g; Co 2 o 3 0.4g.

[0050] 2) Mixing: Put the weighed raw materials into a grinder for mixing and grinding until they are evenly mixed, then add 40mL of hydrochloric acid aqueous solution to obtain a slurry; then dry the slurry at 40°C to obtain a batch; among them, hydrochloric acid The mass concentration of the aqueous solution is 10%.

[0051] 3) Melting: Put the batch material into a platinum crucible, and then put the platinum crucible with the batch material into a resistance furnace for heating. The heating process is: from room temperature to 400°C, with a heating rate of 1.7°C / min , keep warm for 1.5h; from 400°C to 700°C, the heating rate is 1.7°C / min, and keep warm for...

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Abstract

The invention provides lead-free low-melting-point tinted glass and a preparation process thereof. The lead-free low-melting-point tinted glass is prepared from the following components in parts by weight: 40 to 70 parts of SiO2, 0.8 to 5 parts of Al2O3, 1 to 6.5 parts of B2O3, 8 to 17 parts of CaO, BaO and MgO and 13 to 22 parts of Li2O, Na2O and K2O. The glass prepared by the preparation processof the invention is free of lead so as to avoid lead poisoning to a human body, contains glass forming bodies such as B2O3, Al2O3, SiO2 and the like, thereby promoting the formation of the glass andkeeping stability of the structure, contains a large amount of Li2O, Na2O or K2O to improve the solubility of the glass and lower the softening point, and contains CaO, BaO and MgO to improve the acidresistance of the glass.

Description

technical field [0001] The invention relates to the technical field of glass preparation, and specifically discloses a lead-free low melting point colored glass and a preparation process thereof. Background technique [0002] Glass products are environmentally friendly, pollution-free and recyclable packaging and daily-use materials. The energy consumption in the production process is huge, and the difficulty of melting is a bottleneck restricting the development of the industry. With the development of daily-use glass technology, various methods to reduce energy consumption are one of the foundations for the survival of enterprises. Therefore, how to reduce the melting point of glass has become the main research direction of enterprises. Pb0-SiO2, PbO-B2O3, PbO-B2O3-SiO2, PbO-ZnO-B2O3 and other series are often used in the preparation of lead-containing low-melting glass at home and abroad. Lead is a highly toxic substance. The poisoning dose of lead is only 1mg, and the l...

Claims

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Application Information

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IPC IPC(8): C03C4/02C03C3/091C03C6/04C03C1/04C03B5/02C03B19/02C03B25/00
Inventor 成战强陈君华郭雨孙桂平
Owner 安徽鑫民玻璃股份有限公司
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