阅读说明：本技术 一种可以调节反光率的彩色泡沫玻璃制备方法 (Preparation method of colored foam glass with adjustable light reflection rate ) 是由 许勇根 许腾飞 田英良 余文品 于 2020-03-25 设计创作，主要内容包括：本发明涉及一种可以调节反光率的彩色泡沫玻璃制备方法,包括下述步骤：(1)将废玻璃洗净,烘干,磨碎得废玻璃粉；(2)将废玻璃粉、炉渣、碳化硅、玻璃纤维、石英石、碳酸钙、色料置于球磨罐中球磨至粒径为100～200目,形成配合料；(3)将配合料装入模具,放入炉中烧结,调节温度,加工得到彩色泡沫玻璃；(4)在彩色泡沫玻璃的表面镀上一层纳米二氧化硅溶胶层即得成品。本发明制备工艺简单,成本低,制备得到的彩色泡沫玻璃不仅具有很好的机械强度,而且可以有效改善玻璃反光,可以对反光率进行一定调节,可以有效防止光线的反射所造成的影响。(The invention relates to a preparation method of colored foam glass capable of adjusting the light reflection rate, which comprises the following steps: (1) cleaning waste glass, drying and grinding to obtain waste glass powder; (2) placing waste glass powder, furnace slag, silicon carbide, glass fiber, quartz stone, calcium carbonate and pigment in a ball milling tank, and ball milling until the particle size is 100-200 meshes to form a batch; (3) loading the batch mixture into a mold, sintering in a furnace, adjusting the temperature, and processing to obtain colored foam glass; (4) plating a layer of nano silica sol layer on the surface of the colored foam glass to obtain a finished product. The preparation process is simple, the cost is low, the prepared colored foam glass not only has good mechanical strength, but also can effectively improve the light reflection of the glass, can carry out certain adjustment on the light reflection rate, and can effectively prevent the influence caused by the light reflection.)

1. A preparation method of colored foam glass capable of adjusting the light reflection rate is characterized by comprising the following steps:

(1) cleaning waste glass, drying and grinding to obtain waste glass powder;

(2) placing waste glass powder, furnace slag, silicon carbide, glass fiber, quartz stone, calcium carbonate and pigment in a ball milling tank, and ball milling until the particle size is 100-200 meshes to form a batch;

(3) loading the batch mixture into a mold, sintering in a furnace, adjusting the temperature, and processing to obtain colored foam glass;

(4) plating a layer of nano silica sol layer on the surface of the colored foam glass to obtain a finished product.

2. The method for preparing colored foam glass with adjustable light reflection rate according to claim 1, wherein the method comprises the following steps: the weight parts of the raw materials are as follows: 70-90 parts of waste glass powder, 3-6 parts of furnace slag, 2-10 parts of glass fiber, 2-8 parts of quartz stone, 2-8 parts of calcium carbonate and 0.5-2 parts of pigment.

3. The method for preparing colored foam glass with adjustable light reflection rate according to claim 1, wherein the method comprises the following steps: in the step (3), the temperature regulation is divided into a heating preheating stage, a foaming heat preservation stage, an annealing heat preservation stage and a slow annealing stage.

4. The method for preparing colored foam glass with adjustable light reflection rate according to claim 3, wherein the method comprises the following steps: the temperature in the temperature rising and preheating stage is raised from room temperature to 700 ℃ at the temperature rising rate of 3-10 ℃/min, and the temperature is kept for 10-30 min; the temperature in the foaming heat preservation stage is increased to 850-950 ℃ at the heating rate of 2-8 ℃/min for sintering, and the heat preservation is carried out for 10-30 min; the temperature in the annealing heat preservation stage is reduced to 750 ℃ at a cooling rate of 8-13 ℃/min, and then is kept for 10-30 min; the temperature of the slow annealing stage is cooled to room temperature along with the furnace.

5. The method for preparing colored foam glass with adjustable light reflection rate according to claim 1, wherein the method comprises the following steps: in the step (4), the film coating process comprises the steps of sol pretreatment, color foam glass cleaning and film coating pulling.

6. The method for preparing colored foam glass with adjustable light reflection rate according to claim 5, wherein the pretreatment process of the sol comprises the following steps: ethyl orthosilicate, a silane coupling agent, deionized water, ammonia water and absolute ethyl alcohol are mixed according to the weight ratio of 1: 0.5-3: 4-8: 0.5-3: 20-50, uniformly mixing and stirring, standing and aging for 5-10 d, and refluxing the aged alkaline sol for 8-12 h to obtain sol serving as coating mother liquor.

7. The method for preparing colored foam glass with adjustable light reflection rate as claimed in claim 6, wherein the cleaning process of the colored foam glass comprises: cleaning liquid is put into the cleaning tank, then the colored foam glass is put into the cleaning tank for cleaning, and ultrasonic cleaning is carried out by utilizing ultrasonic waves; then transporting the cleaned glass to a vacuum cleaning chamber for further ultrasonic cleaning, wherein the water used in the cleaning process is deionized water; and (4) drying the cleaned glass in a vacuum drying oven.

8. The method for preparing colored foam glass with adjustable light reflection rate according to claim 7, wherein the process of drawing and coating is as follows: soaking the cleaned color foam glass in the coating mother solution, then lifting at the speed of 15-20 mm/s by a pulling method, and drying after lifting to obtain the color foam glass with the film.

9. The method for preparing colored foam glass with adjustable light reflection rate according to claim 1, wherein the method comprises the following steps: the waste glass is one or a mixture of more of waste flat glass, waste patterned glass, waste bottle glass or waste cathode ray tube glass.

Technical Field

The invention relates to a preparation method of foam glass, in particular to a preparation method of colored foam glass with adjustable light reflection rate.

Background

Building energy conservation is an extremely important policy of the country, and is a system engineering which benefits the nation and the people and benefits descendants. The functions of strengthening the heat preservation and heat insulation of buildings on improving the working and living environmental conditions of people and saving energy are direct and practical, in the heat preservation and heat insulation engineering of buildings in China, the high water absorption rate and the poor durability of heat preservation materials are two major problems, the heat preservation performance of the materials is greatly reduced, the heat preservation and heat insulation effect is influenced, and the energy consumption of an air conditioning system is increased. And after absorbing water, the heat-insulating layer becomes a water storage layer, so that the waterproof layer is bulged and damaged, leakage is caused, and water leakage still occurs for a long time after rain. In the structure of the external wall, because of the requirement of heat preservation and heat insulation, the wall body needs to be thickened to meet the requirement of use function, because no heat preservation material can replace the original red brick as the wall body material at present, and only the external heat preservation material can be adopted for heat preservation and heat insulation, the material which has light weight, good heat preservation performance, aging resistance, no water absorption and easy bonding is needed, and the foam glass is the most ideal heat preservation material. The foam glass is an excellent heat-insulating material for roofing or external wall.

The foam glass is prepared by adding auxiliary raw materials such as a foaming agent, a modifier, an accelerant and the like into cullet, and performing processes such as fine grinding, uniform mixing, roasting, foaming and the like. The foam glass has a large amount of uniform bubbles with the diameter of 1-2 mm inside, and the density of the bubbles is only 150-300 kg/m³1/7-1/15 of common glass. The structural and material properties of foam glass determine its many advantageous properties such as: light weight, heat insulation, sound absorption, chemical corrosion resistance, no oxidation, no combustion, no aging and the like, and is an excellent heat-insulating material. The foam glass is used for wall heat preservation and insulation, replaces red bricks, reduces the thickness of the wall, saves energy, indirectly enlarges the using area of a building and reduces the self weight of the building. Ordinary cement sand for constructionThe paste or polymer cement mortar is pasted, and the pasting force is strong. If the coating is used as an external wall coating surface layer, a layer of cement mortar is only needed to be smeared outside the foam glass layer for leveling.

The current foam glass product has single color, and the foam glass with rich color can be produced to have higher application value and double the value of the product.

The glass curtain wall is mainly formed by combining glass and a supporting structure, is a derivative of the effective combination of structure and aesthetics, and can cause certain light pollution while improving the building image for the glass curtain wall.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a preparation method of colored foam glass with adjustable light reflection rate.

The technical scheme adopted by the invention is as follows:

a preparation method of colored foam glass capable of adjusting the light reflection rate comprises the following steps:

(1) cleaning waste glass, drying and grinding to obtain waste glass powder;

(2) placing waste glass powder, furnace slag, silicon carbide, glass fiber, quartz stone, calcium carbonate and pigment in a ball milling tank, and ball milling until the particle size is 100-200 meshes to form a batch;

(3) loading the batch mixture into a mold, sintering in a furnace, adjusting the temperature, and processing to obtain colored foam glass;

(4) plating a layer of nano silica sol layer on the surface of the colored foam glass to obtain a finished product.

Preferably, the weight parts of the raw materials are as follows: 70-90 parts of waste glass powder, 3-6 parts of furnace slag, 2-10 parts of glass fiber, 2-8 parts of quartz stone, 2-8 parts of calcium carbonate and 0.5-2 parts of pigment.

Preferably, in the step (3), the temperature adjustment is divided into a temperature raising and preheating stage, a foaming and heat preservation stage, an annealing and heat preservation stage and a slow annealing stage.

Preferably, the temperature in the temperature rising and preheating stage is raised to 700 ℃ from room temperature at the temperature rising rate of 3-10 ℃/min, and the temperature is kept for 10-30 min; the temperature in the foaming heat preservation stage is increased to 850-950 ℃ at the heating rate of 2-8 ℃/min for sintering, and the heat preservation is carried out for 10-30 min; the temperature in the annealing heat preservation stage is reduced to 750 ℃ at a cooling rate of 8-13 ℃/min, and then is kept for 10-30 min; the temperature of the slow annealing stage is cooled to room temperature along with the furnace.

Preferably, in the step (4), the coating process comprises pretreatment of sol, cleaning of colored foam glass and pulling coating.

Preferably, the pretreatment process of the sol is as follows: ethyl orthosilicate, a silane coupling agent, deionized water, ammonia water and absolute ethyl alcohol are mixed according to the weight ratio of 1: 0.5-3: 4-8: 0.5-3: 20-50, uniformly mixing and stirring, standing and aging for 5-10 d, and refluxing the aged alkaline sol for 8-12 h to obtain sol serving as coating mother liquor.

The silane coupling agent contains methyl, and because the group is small, a large number of film micropores are formed during heating decomposition to reduce the refractive index, so that the light transmittance of the glass antireflection film is improved.

Preferably, the cleaning process of the colored foam glass comprises the following steps: cleaning liquid is put into the cleaning tank, then the colored foam glass is put into the cleaning tank for cleaning, and ultrasonic cleaning is carried out by utilizing ultrasonic waves; then transporting the cleaned glass to a vacuum cleaning chamber for further ultrasonic cleaning, wherein the water used in the cleaning process is deionized water; and (4) drying the cleaned glass in a vacuum drying oven.

Preferably, the pulling coating process comprises the following steps: soaking the cleaned color foam glass in the coating mother solution, then lifting at the speed of 15-20 mm/s by a pulling method, and drying after lifting to obtain the color foam glass with the film.

The coated film is simultaneously coated with a single-layer anti-reflection film on two sides of the glass by using a dip-coating method, the surface of the coated anti-reflection film is smooth and uniform, the light transmittance is strong, and the light transmission can be well ensured; meanwhile, the coated glass can adjust the light reflection rate to a certain degree, and can effectively prevent the influence caused by the reflection of light.

Preferably, the waste glass is one or a mixture of more of waste flat glass, waste embossed glass, waste bottle glass or waste cathode ray tube glass.

Compared with the prior art, the invention has the following beneficial effects:

(1) the colored foam glass has the excellent performance of the common foam glass, has soft color and beautiful appearance, and has wide application prospect in the fields of heat preservation, heat insulation and sound absorption decoration materials;

(2) the preparation process is simple, the preparation is convenient, the prepared colored foam glass not only has good mechanical strength, but also can effectively improve the light reflection of the glass, the light reflection rate can be adjusted to a certain degree, and the influence caused by the light reflection can be effectively prevented;

(3) the method for preparing the foam glass by using the waste glass as the main raw material not only realizes timely and effective treatment of the glass waste, but also realizes cyclic utilization of the waste glass, reduces the production cost, reduces the pollution to the environment, and obtains higher economic benefit while solving the problem of environmental protection.

Detailed Description

The invention is further illustrated by the following examples, without limiting the scope of the invention.

The chemical components of the waste glass are as follows: SiO 2₂73.6％、Al₂O₃2.2％、CaO 9.7％、MgO 4.3％、Fe₂O₃10.2％。SiO₂The foam glass is a main component of waste glass, is melted into liquid with certain viscosity when heated, is beneficial to storing bubbles generated by a foaming material, and is solidified and wraps the bubbles when cooled, so that the foam glass is formed. Al (Al)₂O₃The high content can improve the strength of the glass body and widen the sintering temperature, so that the glass body can be preparedThe product forming is easy to control; fe₂O₃Phase separation and crystallization of the glass can be induced, and the strength of the glass body can be improved.