CN104073051A - Novel anticorrosion antirust compound white pigment and preparation method thereof - Google Patents

Abstract

The invention discloses a novel anticorrosion antirust compound white pigment and a preparation method thereof. The pigment comprises following components in parts by weight: 10-20% of zinc oxide, 10-20% of titanium oxide, 10-20% of pyrophyllite powder, 50-70% of calcium phosphate, 1-5% of pigment dispersing agent, 0.2-1.5% of coupling agent and 1-10% of nano powder material. According to the pigment, traditional white pigments (zinc oxide and titanium oxide) are taken as the base, the pyrophyllite powder is introduced, and therefore the whiteness and covering power of the powder are effectively improved; the calcium phosphate with excellent antirust performance and the nano material are introduced, so as to improve the compactness of the paint film and enhance the water resistance and air resistance of the pigment, and the antirust performance and corrosion resistance of the product are greatly improved. The coupling agent improves the dispersing performance of the granules of the powder, so that the granules and organic macromolecule can be well combined, and the dispersing performance of the powder is greatly improved.

Description

A kind of NEW TYPE OF COMPOSITE white anticorrosive rust-stabilising pigment and preparation method thereof

Technical field

The present invention relates to pigment technology field, be specifically related to a kind of NEW TYPE OF COMPOSITE white anticorrosive rust-stabilising pigment and preparation method thereof.

Background technology

In recent years, white pigment as increasing at the consumption of coating industry in titanium dioxide, zinc oxide etc., its excellent performance more and more obtains users' trust, but its performance of traditional white pigment is single, cannot meet now a lot of growing performance requriementss of product, list need to provide color characteristics, and also needing has the requirements such as antirust, anti-corrosive.Nowadays the loss that metallic corrosion causes is on the rise along with industrial development.According to statistics, the whole world is every year because the metal loss amount that corrosion causes accounts for 20%～40% of annual metal output, financial loss is about 6 times of the natural disaster summations such as earthquake, floods, typhoon, the financial loss that China causes because of metallic corrosion every year accounts for 5% of GDP, so that anticorrosive metal seems is very important.Although at present anticorrosive measure is a lot, the coating protection method that remains of most widely used, most economical and most convenient.In this method, rust-stabilising pigment is the key factor that affects its protection effect.The present invention adopts advanced technologies and formula, in conjunction with modern manufacturing process, organically the color stuffing of various excellent performances is combined, and has the characteristic of white pigment box rust-stabilising pigment concurrently.

Traditional rust-stabilising pigment, as red lead, yellow lead, zinc chromate, strontium yellow, lead silico-chromate, calcium plumbate, lead powder etc., the general element such as leaded, chromium and cadmium, although rustless property is excellent, but poisonous, contaminate environment and health risk, the countries in the world environmental regulation that released one after another is eliminated gradually or completely forbids and use.Therefore, nontoxic, the efficient environmentally friendly corrosion-inhibiting pigment of Development and Production has become the task of top priority.The starting material that this product adopts are all nontoxic ep-type materials, and make a kind of white pigment, its advantage be to coordinate other colored pigments to mix shades of colour, and use face is very wide.

Summary of the invention

It is that white pigment has again that antirust ability is strong, production cost is low and the rust-stabilising pigment of environmentally safe that technical problem to be solved by this invention is to provide a kind of.

For achieving the above object, a kind of novel white rust-stabilising pigment of the present invention, by weight, comprises following composition:

Zinc oxide 10%～20%,

Titanium dioxide 10%～20%,

Pyrophyllite in powder 10%～20%

Calcium phosphate 50%～70%,

Pigment dispersing agent 1%～5%,

Coupling agent 0.2%～1.5%,

Nanopowder 1%～10%;

Described coupling agent is monoalkoxy lipid acid titante coupling agent;

Described nanopowder is one or more the combination in nano silicon, nano-calcium carbonate, Nano silica sol.

Another technical problem solved by the invention is the preparation method that above-mentioned white rust-stabilising pigment is also provided, and comprises the following steps:

A) titanium dioxide, calcium phosphate, zinc oxide, pyrophyllite in powder, pigment dispersing agent are added to batch bin, start mixing device, mix 30～60 minutes; ;

B) nanopowder is added to high-speed mixing 60～90 minutes;

C) with spray pattern, by proportioning, spray into coupling agent, and stir 30～50 minutes simultaneously, discharging is put in storage;

D) material is carried out to regrind, the powder after grinding send classification via secondary air, and recovery is put in storage, and obtains finished product.

The present invention has the following advantages:

One, introduces pyrophyllite in powder in the present invention, due to the characteristic of pyrophyllite in powder, can effectively improve whiteness and the opacifying power of powder when mixing with other white powders, can improve greatly like this whiteness and the opacifying power of powder, can reduce cost.

Its two, the present invention introduces the rustless property that calcium phosphate can effectively improve pigment, in paint film, can slowly discharge phosphate anion, forms fine and close phosphatize phosphate coat with metallic surface, can effectively improve the corrosion resistance nature of coating.Owing to introducing nanopowder, can greatly improve the volume filling density of carrier powder simultaneously, thereby effectively improve the compactness of paint film,, can effectively stop erosion to be infiltrated and film, play than the better physics rust inhibition of traditional coating;

Its three, in the present invention, introduce nano material, effectively improve the defect of paint film, form compact and complete paint film, improve the effect of the choke that blocks water, improve greatly rust-proof effect.

In production, adopt accurate feeding technology, guaranteed well the stability of quality product.

Utilize regrind processing and coupling agent spraying feeding technology, make product there is good homogeneity, thereby ensure its steady quality.

Heavy metal free and organic pollutant in formula for a product, thereby possess nontoxic, harmless characteristic.

Embodiment

Embodiment mono-

Its raw material comprises following component:

Described pigment dispersing agent can be used commercially available various pigment dispersing agent, in the present embodiment, and the super pigment dispersing agent that uses Shanghai Xian Jie Chemical Industry Science Co., Ltd to produce, trade mark HD310; Coupling agent is monoalkoxy lipid acid titante coupling agent, in the present embodiment, adopts the product that the Nanjing Ren Xin Chemical Co., Ltd. trade mark is YDH-105.Above raw material is commercially available prod, is easy to buy.

Concrete preparation method:

A) titanium dioxide, calcium phosphate, zinc oxide, pyrophyllite in powder, pigment dispersing agent are added to batch bin, start mixing device, mix 60 minutes; ;

B) nanopowder is added to high-speed mixing 70 minutes;

C) with spray pattern, by proportioning, spray into coupling agent, and stir 45 minutes simultaneously, discharging is put in storage;

D) by electromagnetic feeder even feeding, it is coated that startup regrind device carries out regrind, and the powder after grinding send classification via secondary air, and recovery is put in storage, the most laggard automatic packing machine packing warehouse-in.In production process, a small amount of loss, makes finished product 990kg.

Embodiment bis-

Its raw material comprises following component:

In the present embodiment, pigment dispersing agent adopts the product that Shandong Taihe Water Treatment Co., Ltd.'s trade mark is TH-904, and coupling agent adopts the commercially available prod that the U.S. Kenrich petroleum chemistry company trade mark is KR-TTS, and production method is identical with embodiment mono-.In production process, a small amount of loss, makes finished product 995kg.

Embodiment tri-

Its raw material comprises following component:

Pigment dispersing agent, coupling agent and production method are identical with embodiment mono-.In production process, a small amount of loss, makes finished product 990kg.

Embodiment tetra-

Its raw material comprises following component:

Pigment dispersing agent, coupling agent and production method are identical with embodiment mono-.In production process, a small amount of loss, makes finished product 990kg.

The product that above-described embodiment is prepared, after testing, reaches following index:

The traditional performance of table one pigment detects

Project	Example one	Example two	Example three	Example four
					Opacifying power (g/m 2)	25	30	28	24
Whiteness	97	98	98	99
					Density (g/m 3)	2.8	2.8	2.8	2.8
Screenings (45 μ m sieve aperture) (%)	≤0.5	≤0.5	≤0.5	≤0.5
					Aqeous suspension pH value	8	8	8	8
105 ℃ of volatile matters (%)	0.1	0.1	0.1	0.1
					Oil number (g/100g)	17	16	14	18
Acid resistance (level)	4	5	4	5
					Alkali resistance (level)	3～5	4	5	5

Above-mentioned pigment and the common rust-stabilising pigment utilization painting spray plate of filling a prescription is as follows carried out to rustless property detection

Table two: anticorrosion middle grey base paint formulation

Raw material	Sample paint (components by weight percent)
		Epoxy resin (50%)	60
Sample	50
		Carbon black	0.5
Organophilic clay	1
		Dimethylbenzene	10
Butanols	5

By above-mentioned sample paint and 200# daiamid epoxy curing agent, (according to weight ratio paint in 6: 1, with general steel plate, make model, paint film thickness 45+3 micron, detects salt spray resistance, and performance detection data as shown in Table 3.

The above-mentioned model making is carried out to salt water resistance and SaltSprayTest, plays result as follows:

Sample	Salt solution (h, the non-foaming non-corrosive that do not come off)	Salt fog (h, the non-foaming non-corrosive that do not come off)
			The sample paint that common powder makes	350	270
The sample paint that example one makes	1600	1050
			The sample paint that example two makes	1650	1100
The sample paint that example three makes	1600	1060
			The sample paint that example four makes	1800	1100

From above-mentioned detection data, can find out, novel antirust research has excellent rustless property, owing to adopting production technique advanced, and constant product quality.This low cost product of while, and belong to environmentally friendly pigment, there are good market outlook.

Claims (4)

1. a NEW TYPE OF COMPOSITE white anticorrosive rust-stabilising pigment, is characterized in that: by weight, comprise following composition:

Zinc oxide 10%～20%,

Titanium dioxide 10%～20%,

Pyrophyllite in powder 10%～20%

Calcium phosphate 50%～70%,

Pigment dispersing agent 1%～5%,

Coupling agent 0.2%～1.5%,

Nanopowder 1%～10%.

2. a kind of NEW TYPE OF COMPOSITE white anticorrosive rust-stabilising pigment according to claim 1, is characterized in that: described coupling agent is monoalkoxy lipid acid titante coupling agent.

3. a kind of NEW TYPE OF COMPOSITE white anticorrosive rust-stabilising pigment according to claim 1, is characterized in that: described nanopowder is one or more the combination in nano silicon, nano-calcium carbonate, Nano silica sol.

4. a kind of preparation method of NEW TYPE OF COMPOSITE white anticorrosive rust-stabilising pigment described in claim 1,2 or 3, is characterized in that: comprise the following steps:

A) titanium dioxide, calcium phosphate, zinc oxide, pyrophyllite in powder, pigment dispersing agent are added to batch bin, start mixing device, mix 30～60 minutes; ;

B) nanopowder is added to high-speed mixing 60～90 minutes;

C) with spray pattern, by proportioning, spray into coupling agent, and stir 30～50 minutes simultaneously, discharging is put in storage;

D) material is carried out to regrind, the powder after grinding send classification via secondary air, and recovery is put in storage, and obtains finished product.