阅读说明：本技术 一种环保高耐酸汽车玻璃浆料用玻璃粉及其制备方法 (Glass powder for environment-friendly high-acid-resistance automobile glass slurry and preparation method thereof ) 是由 朱盟盟 葛配配 郁加良 于 2019-11-15 设计创作，主要内容包括：本发明公开了一种环保高耐酸汽车玻璃浆料用玻璃粉及其制备方法,其玻璃粉基料的组分和质量百分比为：SiO<Sub>2</Sub> 25-35％,Bi<Sub>2</Sub>O<Sub>3</Sub> 30-50％,Al<Sub>2</Sub>O<Sub>3</Sub> 0-2％,ZnO 2-10％,BaO 2-5％,TiO<Sub>2</Sub> 1-8％,Na<Sub>2</Sub>O 2-10％,K<Sub>2</Sub>O 1-8％,Li<Sub>2</Sub>O 3-10％,Fe<Sub>2</Sub>O<Sub>3</Sub> 0-2％。本发明所制备的玻璃粉性能优异,完全满足环保要求及欧盟RoHS标准,且使用该玻璃粉制成的玻璃浆料具有黑度好、遮盖力良好等优异性能。(The invention discloses glass powder for environment-friendly high-acid-resistance automobile glass slurry and a preparation method thereof, wherein the glass powder base material comprises the following components in percentage by mass: SiO 2 2 25‑35％，Bi 2 O 3 30‑50％，Al 2 O 3 0‑2％，ZnO 2‑10％，BaO 2‑5％，TiO 2 1‑8％，Na 2 O 2‑10％，K 2 O 1‑8％，Li 2 O 3‑10％，Fe 2 O 3 0 to 2 percent. The glass powder prepared by the invention has excellent performance, completely meets the environmental protection requirement and the European Union RoHS standard, and the glass slurry prepared by the glass powder has excellent performances of good blackness, good covering power and the like.)

1. The glass powder for the environment-friendly high-acid-resistance automobile glass slurry is characterized by comprising the following raw materials in percentage by mass: SiO 2₂25-35％，Bi₂O₃30-50％，Al₂O₃0-2％，ZnO 2-10％，BaO2-5％，TiO₂1-8％，Na₂O 2-10％，K₂O 1-8％，Li₂O3-10％，Fe₂O₃0-2％。

2. The glass powder for the environment-friendly high-acid-resistance automobile glass slurry as claimed in claim 1, wherein the glass powder comprises the following raw materials in percentage by mass: SiO 2₂28％，Bi₂O₃45％，ZnO 8％，BaO2％，TiO₂1％，Na₂O2％，K₂O 8％，Li₂O 4％，Fe₂O₃2％。

3. The method for preparing the glass powder for the environment-friendly high acid resistance automobile glass paste as claimed in claim 1 or 2, which is characterized by comprising the following steps:

(1) weighing the raw materials in sequence, and fully mixing the raw materials to obtain a mixture;

(2) melting the mixture obtained in the step (1) to obtain molten glass;

(3) performing water quenching on the glass liquid obtained in the step (2) and cooling to obtain a glass cullet block;

(4) transferring the broken glass blocks obtained in the step (3) into a ball mill for ball milling to obtain glass powder;

(5) and (4) drying the glass powder obtained in the step (4), and sieving the dried glass powder by using a screen to obtain finished glass powder for later use.

4. The method for preparing the glass powder for the environment-friendly high-acid-resistance automobile glass slurry according to claim 3, wherein the melting temperature in the step (2) is 1000-1200 ℃.

5. The method for preparing the glass powder for the environment-friendly high-acid-resistance automobile glass slurry according to claim 4, wherein the melting time in the step (2) is 30-50 min.

6. The method for preparing the glass powder for the environment-friendly high-acid-resistance automobile glass slurry according to claim 5, wherein the particle size and distribution of the glass powder in the step (4) are as follows: d50 is 1-2 μm, D90 is 2-4 μm, and D99 is 3-5 μm.

7. The method for preparing glass powder for environment-friendly high acid resistance automobile glass slurry according to claim 6, wherein the mesh number of the screen used in the step (4) is 250 meshes.

Technical Field

The invention relates to glass powder for environment-friendly high-acid-resistance automobile glass slurry and a preparation method thereof, belonging to the technical field of environment-friendly high-acid-resistance glass powder.

Background

The automobile glass paste is a black glass paste printed on the edge of an automobile windshield or the surface of the whole windshield, and is mainly formed by uniformly grinding glass powder, inorganic pigment, ink mixing oil and an auxiliary agent. The flux in the paste is an important component in the automotive glass paste, and the properties of the glass powder determine various properties of the paste, such as expansion coefficient, sintering degree, strength, chemical corrosion resistance, adhesion resistance and the like. For example, the softening temperature of the glass frit determines the sintering temperature and time of the slurry; the compactness of a glass network formed after the glass powder is sintered and the reasonable proportion of the glass powder determine the acid and alkali resistance degree of the slurry. The use of lead-free black glazes is required by automotive glass manufacturers, a measure which is implemented according to environmental requirements. Acid rain caused by industrial pollution can corrode black glaze, and therefore, a more global acid resistance standard is established.

Chinese patent 201210137341.4 discloses an environment-friendly black glaze for automobile glass and a preparation method thereof, wherein the bismuth system glass powder is Bi₂O₃-SiO₂-ZnO-B₂O₃System containing rare metal oxide V₂O₅And therefore the glass cost is high.

Chinese patent 201610105601.8 discloses an acid and alkali resistant environment-friendly slurry for automobile windshields and a preparation method thereof, wherein glass powder is Bi₂O₃-B₂O₃-SiO₂Glass-containing powder and Nb₂O₅-ZnO-B₂O₃-SiO₂Glass powder is prepared by the following steps of: 1, has excellent acid and alkali resistance, still contains high boron content, and has a complex preparation method.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides the glass powder for the environment-friendly high-acid-resistance automobile glass paste and the preparation method thereof, the prepared glass powder has excellent performance and completely meets the environment-friendly requirement and the European Union RoHS standard, and the glass paste prepared by using the glass powder has excellent performances of good blackness, good covering power and the like.

In order to achieve the purpose, the invention adopts the following technical scheme:

1. the glass powder for the environment-friendly high-acid-resistance automobile glass slurry and the preparation method thereof are disclosed, wherein the glass powder base material comprises the following components in percentage by mass: SiO 2₂25-35％，Bi₂O₃30-50％，Al₂O₃0-2％，ZnO 2-10％，BaO2-5％，TiO₂1-8％，Na₂O 2-10％，K₂O 1-8％，Li₂O3-10％，Fe₂O₃0-2％。

As a further improvement of the invention, the glass powder comprises the following raw materials in percentage by mass: SiO 2₂28％，Bi₂O₃45％，ZnO 8％，BaO2％，TiO₂1％，Na₂O 2％，K₂O 8％，Li₂O 4％，Fe₂O₃2％。

2. The invention also provides a preparation method of the glass powder for the environment-friendly high-acid-resistance automobile glass slurry, which comprises the following steps:

(1) weighing the raw materials in sequence, and fully mixing the raw materials to obtain a mixture;

(2) melting the mixture obtained in the step (1) to obtain molten glass;

(3) performing water quenching on the glass liquid obtained in the step (2) and cooling to obtain a glass cullet block;

(4) transferring the broken glass blocks obtained in the step (3) into a ball mill for ball milling to obtain glass powder;

(5) and (4) drying the glass powder obtained in the step (4), and sieving the dried glass powder by using a screen to obtain finished glass powder for later use.

As a further improvement of the invention, the melting temperature in the step (2) is 1000-1200 ℃.

As a further improvement of the invention, the melting time in the step (2) is 30-50 min.

As a further improvement of the invention, the particle size and distribution of the glass powder in the step (4) are as follows: d50 is 1-2 μm, D90 is 2-4 μm, and D99 is 3-5 μm.

As a further improvement of the invention, the mesh number of the screen used in the step (4) is 250 meshes.

Compared with the prior art, the invention has the following advantages:

1. the glass powder for the automobile glass slurry prepared by the invention does not contain lead, boron and halogen, and completely meets the environmental protection requirement and the European Union RoHS standard.

2. The glass powder for the automobile glass slurry prepared by the invention has the performances of low softening temperature, high acid resistance and low expansion coefficient.

3. The automobile glass slurry prepared from the glass powder for the automobile glass slurry has excellent performances of good blackness and good covering power.

Detailed Description

The present invention is described in detail below with reference to examples, but it should be understood that the scope of the present invention is not limited by the examples.