CN104073052A - Novel composite white pigment and preparation method thereof - Google Patents

Abstract

The invention discloses novel composite white pigment and a preparation method thereof. The novel composite white pigment comprises the following components in parts by weight: 10-20 percent of zinc oxide, 10-20 percent of titanium dioxide, 50-70 percent of calcium phosphate, 1-5 percent of pigment dispersing agent, 0.2-1.5 percent of coupling agent and 1-10 percent of nano powder. The advanced production process refers to an accurate feeding technology, a secondary grinding technology and a spray feeding technology of a full-automatic dosing device, and the product quality stability is well guaranteed. The traditional white pigments zinc oxide and titanium dioxide are utilized as the reference, calcium phosphate and nanometer materials with excellent antirust performance are introduced, the compactness of the film is improved, the gas resistance and water resistance are enhanced, and the antirust and anticorrosive performances of the product are greatly improved. Meanwhile, due to the introduced coupling agent, the dispersing performance of powder particles is improved, so that the particles and organic macromolecules have high affinity, and the dispersing performance of the powder is greatly improved.

Description

A kind of NEW TYPE OF COMPOSITE white 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 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 generally element such as leaded, chromium and cadmium, although rustless property excellence, but poisonous, contaminate environment and health risk, the countries in the world environmental regulation that released one after another is eliminated gradually or is completely forbidden and uses.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 NEW TYPE OF COMPOSITE white pigment of the present invention, by weight, comprises following composition: zinc oxide 10%～20%,

Titanium dioxide 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.

A kind of NEW TYPE OF COMPOSITE white pigment preparation method, comprises the following steps:

A) titanium dioxide, calcium phosphate, zinc oxide, 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) spray into coupling agent with spray pattern by proportioning, 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, the present invention introduces calcium phosphate and can effectively improve the rustless property of 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.Can greatly improve the volume filling density of carrier powder owing to introducing nanopowder simultaneously, thereby effectively improve the compactness of paint film,, can effectively stop erosion to infiltrate film, play than the better physics rust inhibition of traditional coating;

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

In production, adopt accurate feeding technology, ensured 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 use 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, pigment dispersing agent are added to batch bin, start mixing device, mix 60 minutes; ;

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

C) spray into coupling agent with spray pattern by proportioning, and stir 50 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 packaging 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)	35	40	38	27
Whiteness	95	94	95	96
					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 DEG C of volatile matters (%)	0.1	0.1	0.1	0.1
					Oil number (g/100g)	17	15	15	16
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, make model with general steel plate, 45 ± 3 microns of paint film thickness, detect 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	400	200
The sample paint that example one makes	1700	1000
			The sample paint that example two makes	1600	1200
The sample paint that example three makes	1620	1160
			The sample paint that example four makes	1840	990

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

Claims (4)

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

Zinc oxide 10%～20%,

Titanium dioxide 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 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 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 pigment described in claim 1,2 or 3, is characterized in that: comprise the following steps:

A) titanium dioxide, calcium phosphate, zinc oxide, 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) spray into coupling agent with spray pattern by proportioning, 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.