Smoke-free and tasteless inorganic nano high-temperature resistant anti-corrosive wear-resistant paint and preparation method thereof
Technical field
The invention belongs to the material technology field, particularly a kind of smoke-free and tasteless inorganic nano high-temperature resistant anti-corrosive wear-resistant paint and preparation method thereof.
Background technology
Wear-resistant paint is mainly used in high-temperature anticorrosion and the wear-resistant protection of engineering machinery, automobile exhaust pipe; Anticorrosion, the fire-resisting protection of steel construction; Wear-resisting, fire-retardant, the flameproof protection of subway, tunnel decoration plate; Heat-resisting, the corrosionproof protection of gas and hot water interchanger, boiler heat exchanger; Wear-resisting, anticorrosion, the fire-resisting protection of the burner that contacts with naked light, fireplace, kitchen tools.
CN101503598A discloses a kind of solvent type organosilicon open fire burning-resistant coating, can anti-500~800 degree.Naked light burns and does not smolder, and does the basic nondiscoloration of blackwash, but can't do light color and bright-colored, and the meeting xanthochromia is under the high temperature for a long time, and organic resin still can decompose some pungent poisonous peculiar smell of generation.Improve toughness by mica powder in the coating, prevent the high temperature cracking, wherein the mica powder amount of accounting for is up to 50%, because mica powder will begin slow decomposition when temperature is higher than 450 ℃, thickness swelling can be sharply weightless more than 600 ℃, almost completely decompose during to 900 ℃, so it is high temperature resistant to rely on mica powder, below heatproof 600 is spent for a long time basically, otherwise coating can the efflorescence cracking.
CN100587017C discloses a kind of solvent type organic silicon thermostable paint and production method thereof, can be high temperature resistant 450~500 degree, but the organic resin pyrolytic decomposition still can the pungent poisonous peculiar smell of generating portion, and can variable color.Can only do black and the black few color of silver, can't do light color and bright-colored.
CN102030906A discloses a kind of preparation of high temperature resistant heavy anti-corrosion paint organic-inorganic hybrid resin, the high temperature that ability is certain, but fail to express how much high temperature of ability, can't use at 600~800 degree for a long time.Simultaneously, owing to adopted a large amount of epoxy radicals silicone hydride monomers in the prescription, surpassing 280 xanthochromias very easily when spending.
CN102351497A discloses a kind of fire resistant environment-friendly nano modified inorganic coating and preparation method and application; ability 700~1000 degree high temperature; but thickness must just have preferably high-temperature resistant anti-corrosive performance up to 45~80um; and only the alloy parts have the excellent high preservative effect; to common iron and steel component protection poor effect; simultaneously; make the solidifying agent of potassium silicate coating in the coating by adding aluminium triphosphate and zinc powder; it is extremely short to cause coating to store validity period; when joining Ge coating; must use as early as possible, otherwise will gelling scrap, cause damage.
CN102190940A discloses a kind of high-temperature-resistant corrosion-resistant coating for engineering machinery tail gas pipe, can only heatproof 500 spend, and can only do black, can produce a large amount of pungent peculiar smell under the high temperature.
CN102167570A discloses a kind of composite Nano high-temperature coatings and preparation method thereof and using method, the technique trouble, and the time is long, must ageing just can enter next technique in 7~10 days.And must do High Temperature Pre at 400~500 degree and process 1~2h, consume mass energy, thickness must just have better heatproof effect more than 30~50um simultaneously.
CN101857753A discloses a kind of protective system, coating process and application, is applicable to heat exchanger, below heatproof 600 degree.But make base-material owing to adopt silicone-modified acrylic resin, easy xanthochromia under the high temperature, can only do silver-colored black, coating is to realize that by adding up to 35% aluminium powder rate melting two-step film forming is next anticorrosion under the high temperature simultaneously, because a large amount of aluminium powders at high temperature can soften melting, so this coating is without hot hardness, wear resistance extreme difference under the high temperature, be to adopt special ultrasonic vibration to carry out application simultaneously, compare with common process that the client uses extremely inconvenient.And coating also adopts the poisonous trimethylbenzene of part to make solvent, not environmental protection of the utmost point.
The high-temperature resistant coating of above organic or inorganic, when scumbling, high-temperature resistant anti-corrosive poor effect, and wear-resisting weak effect.
Summary of the invention
For the problem that prior art exists, the present invention aims to provide a kind ofly can not produce that pungent peculiar smell and flue gas, nondiscoloration, wear resistance are good, strong adhesion, have inorganic nano high-temperature resistant anti-corrosive wear-resistant paint of good antiseptic and rustproof function, environmental protection and preparation method thereof.
First aspect present invention provides a kind of smoke-free and tasteless inorganic nano high-temperature resistant anti-corrosive wear-resistant paint, comprise inorganic nano resin and mixed solvent, described inorganic nano resin is respectively silica dispersion 30%-90%, silane 10%-70%, pH value conditioning agent 0.1%-10% and vulkacit H MT0.01%-1% by component and weight proportion and forms; Described mixed solvent is comprised of high temperature resistant environment-protective pigment, filler, ethanol and water.
Further, described silica dispersion is mixed by 10 nanometers-20 nanometer, 30 nanometers-50 nanometer and 60 nanometers-90 nanometer particle size silicon-dioxide, and its weight proportion is respectively 1%-90%, 1%-90%, 1%-50%.
Further, described silane is formed by the silane mixture of one or more different substituents.
Second aspect present invention provides a kind of preparation method of smoke-free and tasteless inorganic nano high-temperature resistant anti-corrosive wear-resistant paint, comprise above-mentioned smoke-free and tasteless inorganic nano high-temperature resistant anti-corrosive wear-resistant paint, it prepares first the inorganic nano resin, again with described inorganic nano resin and mixed solvent mixed grinding, wherein:
The preparation method of inorganic nano resin is as follows: first the nano silicon dispersion of different-grain diameter is mixed, after mixing, add the PH conditioning agent and regulate the pH value of nano silicon dispersion less than 7, then be warmed up to 50 degree, begin to drip the in advance mixed silanes of metering, in 30 minutes, drip off, keep temperature of reaction at 50~80 degree, isothermal reaction 2~5 hours, then the vulkacit H MT that adds metering, insulation reaction 30 minutes, stopped heating, cooling down, can obtain outward appearance is the inorganic nano resin of half milky white transparent thick liquid.Different according to each material proportion, each inorganic resin solid content of filling a prescription is controlled between 30~50%;
Again the inorganic nano resin for preparing is mixed with mixed solvent, carry out high speed dispersion with high speed dispersor, jitter time is 10~30 minutes, then adopts horizontal sand mill to grind, and regulating water coolant makes the grinding material temperature be no more than 60 degree, milling time 1~2 hour.
Described smoke-free and tasteless inorganic nano high-temperature resistant anti-corrosive wear-resistant paint provided by the invention and preparation method thereof has following beneficial effect:
1, smoke-free and tasteless: owing to be inorganic paint, can not produce pungent peculiar smell and the flue gas of organism pyrolytic decomposition;
2, nondiscoloration: owing to be inorganic paint, can variable color under the high temperature, and can do the bright color coating such as the light-coloured coating such as white that other high-temperature resistant coatings can not do and yellow, green, and can flavescence;
3, high-wearing feature: hot hardness is high under hardness and the high temperature, can reach 9 hours;
4, high adhesive force and stripping strength: owing to the nano-silicon that is different-grain diameter is composite, strengthened greatly the cross-linking density of inorganic resin, increased the density of coating; Simultaneously the nano-silicon of big or small nanometer particle size is mixed, and has filled up the space between the large grain diameter nano silicon, and the small particle size nanometer absorbs the thermal stresses that has cushioned between the large grain diameter nano disperses, and large grain diameter nano silicon is resisted and the thermal stresses of having isolated the small particle size nanometer is concentrated;
5, good antiseptic and rustproof function;
6, fire prevention: the good high-temperature heat insulation that inorganic coating is intrinsic, can stop the fire heat to the steel transmission, and at high temperature formation is a kind of fine and close glaze layer that is similar to pottery of high rigidity, effectively starvation, delay steel construction and heat up, play the flameproof protection effect;
7, economize consumptive material: because the composite formed high-compactness of nano-silicon of many particle diameters, can reach high temperature resistant and anticorrosion, flame-proof abrasion-resistant function at the thin coating film of 15 micron thickness, greatly save materials consumption;
8, easy construction: be single-component product, normal temperature solidified, need not add curing catalyst, it is long to store validity period, can be up to more than half a year, it is simple and convenient to construct;
9, environmental protection: inorganic paint, pigment adopts the high-temperature resisting pigment that meets FDA and rosh instruction, does not contain heavy metal, and solvent is the mixture of a small amount of second alcohol and water, environment-protecting asepsis.
Embodiment
Further specify technical scheme of the present invention below by embodiment:
The invention provides a kind of smoke-free and tasteless inorganic nano high-temperature resistant anti-corrosive wear-resistant paint, comprise inorganic nano resin and mixed solvent, described inorganic nano resin is comprised of silica dispersion, silane, pH value conditioning agent and vulkacit H MT; Described mixed solvent high temperature resistant environment-protective pigment, filler, ethanol and water form.
Described silica dispersion is nano silicon dispersion or the silicon sol that adopts tetraethyl silicate or silica flour or water glass to make.
Described silane comprises the trifunctional of the various organic substituents such as methyl, ethyl, propyl group, butyl, sulfydryl, octyl group, vinyl, methacryloxy, phenyl, cyclohexyl, glycidyl ether and the silane coupling agent of two functional groups.
Described pH value conditioning agent refers to acetic acid, formic acid, propionic acid, oxalic acid, hydrochloric acid, sulfuric acid, nitric acid.
Described high temperature resistant environment-protective pigment refers to not contain the mineral dye that meets FDA and Rosh instruction of heavy metal: copper-chrome black, oxidation cobalt green, oxidation cobalt blue, titan yellow, titanium white etc.
Embodiment one:
With 50kg10 nanometer~20 nano silicon dispersions, 20kg30 nanometer~50 nano silicon dispersions, 30kg60 nanometer~90 nano silicon dispersions add respectively in the scuffing of cylinder bore of jacketed water-cooled, begin to stir, then drop into 8kg acetic acid, regulating pH value is 4, then be warmed up to 50 degree, begin to drip 45kg methyltrimethoxy silane and 4.5kg dimethyldimethoxysil,ne, 0.5kg the mixture of glycidyl ether Trimethoxy silane, in 30 minutes, drip off, keep temperature of reaction at 60 degree, isothermal reaction 3 hours, then add 1.5kg vulkacit H MT, insulation reaction 30 minutes, stopped heating, cooling down, can obtain outward appearance is the inorganic nano resin of half milky white transparent thick liquid.The inorganic nano resin solid content is 35.6%, pencil hardness 9H, 58 ° of gloss, 1000 ° of heatproofs.
With 50kg inorganic nano resin, the 15kg environmental protection for preparing do not contain that heavy metal 600 degree glass powder with low melting point, 1kg aluminum oxide 1250 orders, 8kg silicon whisker, 15kg environment friendly inorganic hard fire colour chromium-copper are black, 1kg inorganic bentonite, 5kg dehydrated alcohol, 5kg water mix, then carry out high speed dispersion with high speed dispersor, jitter time is 30 minutes, then grind, to adopt horizontal sand mill to grind, and the adjusting water coolant makes the grinding material temperature be no more than 60 degree, milling time 2 hours.The mode of employing spraying sprays to the metal part surface through sandblasting, behind the surface drying 5min, the baking oven of putting into 100 ℃ of furnace temperature is incubated 30min, namely obtain inorganic coating after taking out air cooling, 1000 ℃ through the oxidation of 100h constant temperature, the destruction such as efflorescence, peeling do not appear in coating, come off, and in high temperature resistant process, produce without any pungent poison gas and peculiar smell, have simultaneously good anticorrosion salt spray resistance and wear resisting property.
Embodiment two to embodiment 17:
The preparation method of embodiment two to 17 is identical with embodiment, and prescription please refer to following table 1 and table 2:
The prescription of table 1: embodiment two to embodiment nine
The prescription of table 2: embodiment ten to embodiment 17
Its main performance index please refer to following table 3 and table 4:
The main performance index of table 3: embodiment two to embodiment nine
Sequence number |
Index name |
Embodiment 2 |
Embodiment 3 |
Embodiment 4 |
Embodiment 5 |
Embodiment 6 |
Embodiment 7 |
Embodiment 8 |
Embodiment 9 |
1 |
Solid content |
35 |
42 |
48 |
35.5 |
35 |
35 |
34 |
34 |
2 |
Pencil hardness |
9H |
9H |
7H |
9H |
9H |
9H |
9H |
9H |
3 |
Gloss |
55 ° |
68 ° |
75 ° |
65 ° |
61 ° |
60 ° |
40 ° |
67 ° |
4 |
Heatproof |
1000 ° |
800 ° |
600 ° |
1000 ° |
1000 ° |
1000 ° |
1000. |
600° |
The main performance index of table 4: embodiment ten to embodiment 17
Sequence number |
Index name |
Embodiment 10 |
Embodiment 11 |
Embodiment 12 |
Embodiment 13 |
Embodiment 14 |
Embodiment 15 |
Embodiment 16 |
Embodiment 17 |
1 |
Solid content |
32 |
32 |
40 |
39 |
44 |
46 |
41 |
37 |
2 |
Pencil hardness |
7H |
7H |
7H |
9H |
8H |
7H |
9H |
9H |
3 |
Gloss |
50° |
60° |
60° |
62° |
64° |
66° |
58° |
59° |
4 |
Heatproof |
1000° |
1000° |
800° |
800° |
600° |
600° |
800° |
800° |
Described smoke-free and tasteless inorganic nano high-temperature resistant anti-corrosive wear-resistant paint provided by the invention and preparation method thereof has following beneficial effect:
1, smoke-free and tasteless: owing to be inorganic paint, can not produce pungent peculiar smell and the flue gas of organism pyrolytic decomposition;
2, nondiscoloration: owing to be inorganic paint, can variable color under the high temperature, and can do the bright color coating such as the light-coloured coating such as white that other high-temperature resistant coatings can not do and yellow, green, and can flavescence;
3, high-wearing feature: hot hardness is high under hardness and the high temperature, can reach 9 hours;
4, high adhesive force and stripping strength: owing to the nano-silicon that is different-grain diameter is composite, strengthened greatly the cross-linking density of inorganic resin, increased the density of coating; Simultaneously the nano-silicon of big or small nanometer particle size is mixed, and has filled up the space between the large grain diameter nano silicon, and the small particle size nanometer absorbs the thermal stresses that has cushioned between the large grain diameter nano disperses, and large grain diameter nano silicon is resisted and the thermal stresses of having isolated the small particle size nanometer is concentrated;
5, good antiseptic and rustproof function;
6, fire prevention: the good high-temperature heat insulation that inorganic coating is intrinsic, can stop the fire heat to the steel transmission, and at high temperature formation is a kind of fine and close glaze layer that is similar to pottery of high rigidity, effectively starvation, delay steel construction and heat up, play the flameproof protection effect;
7, economize consumptive material: because the composite formed high-compactness of nano-silicon of many particle diameters, can reach high temperature resistant and anticorrosion, flame-proof abrasion-resistant function at the thin coating film of 15 micron thickness, greatly save materials consumption;
8, easy construction: be single-component product, normal temperature solidified, need not add curing catalyst, it is long to store validity period, can be up to more than half a year, it is simple and convenient to construct;
9, environmental protection: inorganic paint, pigment adopts the high-temperature resisting pigment that meets FDA and rosh instruction, does not contain heavy metal, and solvent is the mixture of a small amount of second alcohol and water, environment-protecting asepsis.
The above has carried out exemplary description to the present invention; obvious realization of the present invention is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted technical solution of the present invention to carry out; or without improving design of the present invention and technical scheme are directly applied to other occasion, all in protection scope of the present invention.