阅读说明：本技术 一种纳米硅改性岩棉废弃物的玄武岩防锈颜料及其制备工艺 (Basalt antirust pigment prepared from nano-silicon modified rock wool waste and preparation process of basalt antirust pigment ) 是由 汪培庆 黄承暄 于 2020-07-04 设计创作，主要内容包括：本发明公开了一种纳米硅改性岩棉废弃物的玄武岩防锈颜料及其制备工艺,本发明利用纳米材料,对岩棉加工过程中得到的含有酚醛树脂残留的废弃物进行处理,得到具有很好流动性的玄武岩短纤维和粉体组成的防锈颜料。将岩棉加工废弃物和纳米改性液体按照一定配比进行混合,在常温下球磨8～20h,形成重量固含量为50～75％的浆料,进行喷雾干燥,得到的防锈颜料具有很好的流动性,可用于水性环氧、水性聚氨酯、氨基树脂、水性醇酸树脂、水性丙烯酸树脂涂料的防锈颜料。本发明涉及到的原料便宜易得,合成过程易控,无须特设条件和设备,产率较高,防锈效果显著,不仅解决了岩棉废弃物污染环境的问题,还在环境友好型耐腐蚀涂料领域有重要的应用前景。(The invention discloses a basalt antirust pigment of nano silicon modified rock wool waste and a preparation process thereof. Mixing rock wool processing waste and nano modified liquid according to a certain proportion, ball-milling for 8-20 h at normal temperature to form slurry with the solid content of 50-75%, and spray-drying to obtain the antirust pigment with good fluidity, which can be used as the antirust pigment of waterborne epoxy, waterborne polyurethane, amino resin, waterborne alkyd resin and waterborne acrylic resin coating. The raw materials related by the invention are cheap and easy to obtain, the synthesis process is easy to control, special conditions and equipment are not needed, the yield is high, the antirust effect is obvious, the problem that the rock wool waste pollutes the environment is solved, and the antirust paint has an important application prospect in the field of environment-friendly corrosion-resistant paint.)

1. A preparation process of a basalt antirust pigment prepared from nano-silicon modified rock wool waste is characterized by comprising the following steps:

1) mechanically crushing the collected basalt waste containing residual phenolic resin in the production process of rock wool to obtain a basalt mixed material;

2) screening the obtained basalt mixed material to obtain basalt short fibers and basalt fine powder;

3) preparing the required nano modified liquid;

4) mixing the prepared nano modified liquid, basalt fiber, basalt fine powder and a dispersing agent in proportion, and then performing ball milling at normal temperature to obtain slurry;

5) and (4) testing the solid content of the obtained slurry, and performing spray drying after the slurry reaches the standard.

2. The preparation process according to claim 1, wherein the diameter of the basalt fiber monofilament is 1 to 7 μm, and the particle size of the basalt fine powder is 10 to 80 μm.

3. The process according to claim 1, wherein the nano-modification liquid consists of an amino resin: alkaline silica sol: water: KH570 ═ 10: 20-50: 200-500: 3-10 parts by weight of the components are mixed and stirred for 3 hours at the temperature of 20-40 ℃.

4. The process of claim 1, wherein the slurry comprises, by weight: 20-70 parts of nano modified liquid; 10-60% of basalt fibers; 20-50 parts of basalt fine powder; 2-5 parts of a dispersing agent.

5. The process of claim 1, wherein the dispersant comprises one or more of polyacrylic acids, fatty acid derivatives, lecithin, and oxidized fish oil products.

6. The preparation process according to claim 1, wherein the ball milling time is 8 to 20 hours.

7. The process of claim 1, wherein the slurry has a solids content of 50 to 75%.

8. The process of claim 1, wherein the spray drying temperature is: 105 to 150 ℃.

9. The basalt antirust pigment prepared from nano-silicon modified rock wool waste is characterized by comprising the following components in parts by weight:

20-70 parts of nano modified liquid; 10-60% of basalt fibers; 20-50 parts of basalt fine powder; 2-5 parts of a dispersing agent, wherein the nano modified liquid is prepared from amino resin: alkaline silica sol: water: KH570 ═ 10: 20-50: 200-500: 3-10 parts by weight.

10. The pigment of claim 9, wherein: the dispersant is one or more selected from polyacrylic acids, fatty acid derivatives, lecithin and oxidized fish oil products.

Technical Field

The invention belongs to the technical field of material science, and particularly relates to a basalt antirust pigment prepared from nano-silicon modified rock wool waste and a preparation process thereof.

Background

The rock wool production process can generate a large amount of solid wastes, if the wastes are not properly treated, the long-time production and waste accumulation can cause huge pollution to the natural environment, and the people are hurt, so the demand of rock wool waste recycling technology is urgent.

The basalt mainly comprises silicon dioxide, aluminum oxide, ferric oxide, calcium oxide and magnesium oxide (small amount of potassium oxide and sodium oxide), wherein the content of the silicon dioxide is the maximum, and the silicon dioxide accounts for about forty-five to fifty percent. The basalt continuous fiber has high strength, and also has various excellent performances of electrical insulation, corrosion resistance, high temperature resistance and the like, and is an excellent material used as an anti-corrosion coating.

Disclosure of Invention

In view of the above, the invention aims to provide a basalt antirust pigment prepared from nano-silicon modified rock wool waste and a preparation process thereof. In order to achieve the above object, the present invention provides the following technical solutions:

a preparation process of a basalt antirust pigment prepared from nano-silicon modified rock wool waste is characterized by comprising the following steps:

1) mechanically crushing the collected basalt waste containing residual phenolic resin in the production process of rock wool to obtain a basalt mixed material;

2) screening the obtained basalt mixed material to obtain basalt short fibers and basalt fine powder;

3) preparing the required nano modified liquid;

4) mixing the prepared nano modified liquid, basalt fiber, basalt fine powder and a dispersing agent in proportion, and then performing ball milling at normal temperature to obtain slurry;

5) and (4) testing the solid content of the obtained slurry, and performing spray drying after the slurry reaches the standard.

The invention has the beneficial effects that:

the rock wool processing waste and the nano modified liquid are mixed according to a certain proportion, ball milling is carried out for 8-20 h at normal temperature, slurry with the solid content of 50-75% is formed, and spray drying is carried out. The obtained antirust pigment has good fluidity and can be used as the antirust pigment of waterborne epoxy, waterborne polyurethane, amino resin, waterborne alkyd resin and waterborne acrylic resin paint. Wherein the nano modified liquid comprises the following components: amino resin, alkaline silica sol, water, KH570, according to 10: (20-50): (200-500): (3-10) mixing the components in proportion, and stirring the mixture for 3 hours at the temperature of 20-40 ℃ for use. The raw materials related by the invention are cheap and easy to obtain, the synthesis process is easy to control, special conditions and equipment are not needed, the yield is high, the antirust effect is obvious, the problem that the rock wool waste pollutes the environment is solved, and the antirust paint has an important application prospect in the field of environment-friendly anticorrosive paint.

Furthermore, the basalt fiber monofilament is 1-7 microns, and the particle size of the basalt fine powder is 10-80 microns.

Further, the nano modified liquid comprises the following components in percentage by weight: alkaline silica sol: water: KH570 ═ 10: 20-50: 200-500: 3-10 parts by weight of the components are mixed and stirred for 3 hours at the temperature of 20-40 ℃.

Further, the slurry comprises the following components in percentage by weight: 20-70 parts of nano modified liquid; 10-60% of basalt fibers; 20-50 parts of basalt fine powder; 2-5 parts of a dispersing agent.

Further, the dispersing agent comprises one or more of polyacrylic acids, fatty acid derivatives, lecithin and oxidized fish oil products.

Further, the ball milling time is 8-20 h.

Further, the solid content of the slurry is 50-75%.

Further, the spray drying temperature is as follows: 105 to 150 ℃.

The invention also provides a basalt antirust pigment prepared from the nano-silicon modified rock wool waste, which is characterized by comprising the following components in parts by weight:

20-70 parts of nano modified liquid; 10-60% of basalt fibers; 20-50 parts of basalt fine powder; 2-5 parts of a dispersing agent, wherein the nano modified liquid is prepared from amino resin: alkaline silica sol: water: KH570 ═ 10: 20-50: 200-500: 3-10 parts by weight.

Further, the dispersing agent is one or more of polyacrylic acids, fatty acid derivatives, lecithin and oxidized fish oil products.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.