CN106590072A - Wear-resisting and chromium-free bionic self-cleaning phosphate group high-temperature anticorrosive paint and preparation method thereof - Google Patents

Abstract

The invention discloses wear-resisting and chromium-free bionic self-cleaning phosphate group high-temperature anticorrosive paint. The wear-resisting and chromium-free bionic self-cleaning phosphate group high-temperature anticorrosive paint is prepared from the following raw materials in parts by weight: 2-2.2 parts of ferric citrate, 3-3.3 parts of basic nickel carbonate, a proper amount of water, a proper amount of ammonia water, 10-11 parts of TiC, 0.7-0.9 part of perfluorooctanoic acid, 1-1.3 parts of nano carbon, 1.3-1.5 parts of nano tungsten disulfide, 28-30 parts of 85%-88% phosphoric acid, 68-70 parts of phosphorus pentoxide, 0.5-0.6 part of polystyrene microspheres with the size of 500nm-800nm, 4-5 parts of aluminum hydroxide, 2-3 parts of magnesium oxide, 4-4.3 parts of zinc phosphomolybdate and 1-1.3 parts of triethanolamine. According to the wear-resisting and chromium-free bionic self-cleaning phosphate group high-temperature anticorrosive paint, the nano carbon is modified by utilizing perfluorooctanoic acid, so that the water resistance and dispersibility of the nano carbon are improved and nano carbon and nano tungsten disulfide can be uniformly dispersed into the paint, and furthermore, the wearing resistance of a coating is improved; and the polystyrene microspheres are removed after being heated, and small and uniform concave pits are formed, so that the coating has a self-cleaning performance and the corrosion of the coating is alleviated.

Description

Bionical automatically cleaning phosphate high-temperature anticorrosion paint of a kind of wear-resisting Chrome-free and preparation method thereof

Technical field

The present invention relates to technical field of coatings, more particularly to a kind of bionical automatically cleaning phosphate high-temperature anticorrosion painting of wear-resisting Chrome-free Material and preparation method thereof.

Background technology

《Chromium-free environment-friendly phosphate base high-temperature anticorrosion paint》With water-soluble poly-phosphate as main film forming matter, CuO is one text Firming agent, using Chrome-free system neutralization technology, adds the metal powder of different types of reactivity, functional filler and different melting points End, is prepared for chromium-free environment-friendly phosphate base high-temperature anticorrosion paint.Have studied P₂O₅Content, CuO, Chrome-free corrosion inhibiter HJ, feature are filled out Material and impact of the metal dust to chromium-free environment-friendly phosphate base high-temperature anticorrosion paint performance.As a result show, the bonding of coating is strong Degree is high, can resistance to 900 DEG C of temperatures above for a long time, and with performances such as excellent anticorrosion, resistance to thermal shock;Chrome-free system slow release method should With solving Cr⁶⁺Pollution problem, adapt to requirement of the development of modern industry to environmental conservation.

But anticorrosive paint easily gets wet, so as to corrode, service life and attractive in appearance is affected, it is possible to use bionics are former Surface is made rough coating, reaches the purpose of automatically cleaning and waterproof by reason, extends protection life-span of coating and attractive in appearance Property, in addition it is also necessary to improve the wearability of coating.

The content of the invention

The object of the invention is exactly for the defect for making up prior art, there is provided a kind of bionical automatically cleaning phosphate of wear-resisting Chrome-free High-temperature anticorrosion paint and preparation method thereof.

The present invention is achieved by the following technical solutions：

A kind of bionical automatically cleaning phosphate high-temperature anticorrosion paint of wear-resisting Chrome-free, is prepared by the raw materials in：Ferric citrate 2-2.2, basic nickel carbonate 3-3.3, appropriate amount of water, appropriate ammonia, TiC10-11, perfluoro caprylic acid 0.7-0.9, nano-sized carbon 1-1.3, receive Rice tungsten disulfide 1.3-1.5,85-88% phosphoric acid 28-30, phosphorus pentoxide 68-70,500-800nm polystyrene microsphere 0.5- 0.6th, aluminium hydroxide 4-5, magnesium oxide 2-3, phosphomolybdic acid zinc 4-4.3, triethanolamine 1-1.3.

The preparation method of the bionical automatically cleaning phosphate high-temperature anticorrosion paint of described wear-resisting Chrome-free, comprises the following steps：

（1）In nitrogen atmosphere by ferric citrate add 25-30 weight portions water in, be heated to 60-80 DEG C, 90-120 turn/ Stirring 1.5-1.8 hours under point, add TiC, stir 1-1.5 hours, add basic nickel carbonate stirring 3-4 hours, use ammonia PH value is adjusted to 6-6.5,90-130 DEG C is heated to and is kept the temperature to continue stirring 2-3 hours, obtain gel, be atomized, Then in hydrogen atmosphere at 500-520 DEG C roasting 2-2.3 hours, obtain powder；

（2）Perfluoro caprylic acid, nano-sized carbon are mixed, 85-90 DEG C is heated to, is stirred, be dried, then ground with nano tungsten disulfide Uniformly, obtain modified Nano tungsten disulfide；

（3）85-88% phosphoric acid and phosphorus pentoxide are reacted into 1-1.2h at 140-145 DEG C, aluminium hydroxide is added, in 118-122 React at DEG C to transparent, add the water of 45-50 weight portions, stir, add other residual componentss, stir, adjust PH value is 3-4, is cooled to room temperature, obtains base material；

（4）By the powder, modified Nano tungsten disulfide, base material mix homogeneously, obtain final product.

It is an advantage of the invention that：The present invention carries out coating modification to TiC using ferric citrate, basic nickel carbonate, in ceramics Phase surface has first coated ferrum and nickel so that TiC granules easily carry out reaction with base material and combine, and reduce interfacial effect so that apply The intensity and toughness of layer is greatly improved, and the use of nickel also reduces coating corrosivity；By using perfluoro caprylic acid pair Nano-sized carbon is modified, and improves resistance to water, the dispersibility of nano-sized carbon, can be dispersed in coating with nano tungsten disulfide In, improve the wearability of coating；Polystyrene microsphere is removed after being heated, and defines small uniform pit so that applied Layer has self-cleaning performance, slows down coating corrosion.

Specific embodiment

The bionical automatically cleaning phosphate high-temperature anticorrosion paint of a kind of wear-resisting Chrome-free, by the raw material system of following weight portion (kilogram) Into：Ferric citrate 2, basic nickel carbonate 3, appropriate amount of water, appropriate ammonia, TiC10, perfluoro caprylic acid 0.7, nano-sized carbon 1, nanometer curing Tungsten 1.3,85% phosphoric acid 28, phosphorus pentoxide 68,500nm polystyrene microspheres 0.5, aluminium hydroxide 4, magnesium oxide 2, phosphomolybdic acid zinc 4th, triethanolamine 1.

The preparation method of the bionical automatically cleaning phosphate high-temperature anticorrosion paint of described wear-resisting Chrome-free, comprises the following steps：

（1）During ferric citrate to be added in nitrogen atmosphere the water of 25 weight portions, 60 DEG C are heated to, 1.5 are stirred under 90 revs/min Hour, TiC is added, is stirred 1 hour, added basic nickel carbonate and stir 3 hours, pH value is adjusted to 6 with ammonia, be heated to 90 DEG C And keep the temperature to continue stirring 2 hours, and gel is obtained, is atomized, then in hydrogen atmosphere, at 500 DEG C, roasting 2 is little When, obtain powder；

（2）Perfluoro caprylic acid, nano-sized carbon are mixed, 85 DEG C is heated to, is stirred, be dried, then it is equal with nano tungsten disulfide grinding It is even, obtain modified Nano tungsten disulfide；

（3）85% phosphoric acid and phosphorus pentoxide are reacted into 1h at 140 DEG C, aluminium hydroxide is added, are reacted at 118 DEG C to transparent, The water of 45 weight portions is added, is stirred, added other residual componentss, stir, it is 3 to adjust pH value, is cooled to room temperature, Obtain base material；

（4）By the powder, modified Nano tungsten disulfide, base material mix homogeneously, obtain final product.

Experimental data：

The embodiment coating is sprayed, and is dried 2 hours at 200 DEG C, observes appearance of film smooth, under the microscope after being dried There is uniform pit, it is 158 ° that adhesive force is 26.8MPa contact angles；Lower temperature resistance：10h is processed at -45 DEG C, paint film is intact； Heat-resisting quantity：10h is processed at 900 DEG C, paint film is intact, adhesive force is 32.8MPa；Resistance to heat shocks：1000-5 DEG C is processed repeatedly In 10 cycles, paint film is intact；Resistance to synthetic lubricant fluid：150 DEG C of process 24h, paint film are unchanged；Hydraulic pressure resistant oiliness：150 DEG C of process 24h, paint film are unchanged；Resistance to diesel oil：Room temperature processes 72h, and paint film is unchanged；Resistance to water：Room temperature processes 500h, and paint film is without change Change；Salt fog resistance：2000h paint films are unchanged；Humidity resistance：1000h paint films are unchanged.

Claims (2)

1. the bionical automatically cleaning phosphate high-temperature anticorrosion paint of a kind of wear-resisting Chrome-free, it is characterised in that by the raw material system of following weight portion Into：Ferric citrate 2-2.2, basic nickel carbonate 3-3.3, appropriate amount of water, appropriate ammonia, TiC10-11, perfluoro caprylic acid 0.7-0.9, receive Rice carbon 1-1.3, nano tungsten disulfide 1.3-1.5,85-88% phosphoric acid 28-30, phosphorus pentoxide 68-70,500-800nm polyphenyl second Alkene microsphere 0.5-0.6, aluminium hydroxide 4-5, magnesium oxide 2-3, phosphomolybdic acid zinc 4-4.3, triethanolamine 1-1.3.

2. the preparation method of the bionical automatically cleaning phosphate high-temperature anticorrosion paint of wear-resisting Chrome-free according to claim 1, which is special Levy is to comprise the following steps：

（1）In nitrogen atmosphere by ferric citrate add 25-30 weight portions water in, be heated to 60-80 DEG C, 90-120 turn/ Stirring 1.5-1.8 hours under point, add TiC, stir 1-1.5 hours, add basic nickel carbonate stirring 3-4 hours, use ammonia PH value is adjusted to 6-6.5,90-130 DEG C is heated to and is kept the temperature to continue stirring 2-3 hours, obtain gel, be atomized, Then in hydrogen atmosphere at 500-520 DEG C roasting 2-2.3 hours, obtain powder；

（2）Perfluoro caprylic acid, nano-sized carbon are mixed, 85-90 DEG C is heated to, is stirred, be dried, then ground with nano tungsten disulfide Uniformly, obtain modified Nano tungsten disulfide；

（3）85-88% phosphoric acid and phosphorus pentoxide are reacted into 1-1.2h at 140-145 DEG C, aluminium hydroxide is added, in 118-122 React at DEG C to transparent, add the water of 45-50 weight portions, stir, add other residual componentss, stir, adjust PH value is 3-4, is cooled to room temperature, obtains base material；

（4）By the powder, modified Nano tungsten disulfide, base material mix homogeneously, obtain final product.