Pigment for Paint - Example of Pigment in Paint in 2024

Commonly used colour pigment in paints:

1. Paint Pigment Powder

Paint pigment powders are the basis of paint color. Depending on the specific use and color, paint pigment powders are extracted from natural minerals, or made by chemical synthesis. Common pigments in paint include iron oxide, titanium dioxide, red lead, ultramarine and so on. They have a wide variety of colors due to different proportions and mixing methods.

2.White protective materials

As a kind of pigment, the white protective materials are indispensable in paint production. They contain one or more organic or inorganic substances. They are usually in primers, fillers and topcoats in paint pigments. They cannot only adjust the paint color, but also cover up cracks or defects on surfaces.

3. High-stability resin

Resins are often binders and catalysts for other components in paints. They are highly stable to keep pigment colors unchanged. They can relieve external influences to ensure the consistency and durability of appearance. Raw materials for resins include chemicals as well as natural and synthetic resins.

There are many types of pigments in paints, but pigment powders, white protective materials and high-stability resins are three main components. They are indispensable in building and automobile painting or furniture surfaces.

Steps to add pigment to paint:
1. Prepare a paint bottle, colorant (such as pigment, pigment powder or pigment liquid), stirring rod or mixing rod, vessel (such as a glass bottle or plastic vessel), etc.

2. Open the bottle and fill it with an appropriate amount of paint, approximately 1/3 to 1/2 of the bottle capacity.

3. Add the colorants for paint drop by drop according to the desired color effect. First, add a small amount of pigment. Then, gradually add more pigment to the desired concentration.

4. Fully stir the colorant via the stirring rod or mixing rod, until it is thoroughly mixed with the paint.

5. Test the color on a test plate via a brush or cotton swab. If the color is not satisfactory, continue to add the colorant or adjust the proportion, until the desired color effect is achieved.

6. Contain the remaining paint in a small bottle. Seal the bottom to prevent the paint from drying or deterioration. Keep the paint in a cool and dry place and away from direct sunlight.

There are usually four basic ingredients in paint: film-forming substances (resin, emulsion), pigments (including extender pigments), solvents and extenders (additives).

1. Film-forming substances are main components of films, including resins, resin processing products, cellulose derivatives, natural resins, synthetic resins and synthetic emulsions. They also include partially non-volatile active diluents. They are main substances to securely attach the paint on surfaces and form continuous films. As the basis of paint, they determine the basic properties of paint.

2. Aids include defoamers, leveling agents and some special functional aids, such as substrate wetting agents. They cannot form films in general, and their amount is small. However, they play a very important role in film formation and durability.

3. Pigments used in paint are usually of two types, coloring pigments such as commonly used dioxide titanium and chromium yellow, and extender pigments or common fillers such as calcium carbonate and talc powder.

4. Solvents include hydrocarbons (mineral olein, kerosene, gasoline, benzene, toluene, xylene, etc.) alcohols, ethers, ketones and esters. The main purpose of solvents and water is to disperse the film-forming base material and form viscous liquid. Solvents are conducive to construction and improvement of some properties of films.

By main film-forming substances, paints consist of oil-based paints, fiber paints, synthetic paints and inorganic paints. Depending on the properties of paints or films, paints consist of solution, latex, sol, powder, glossy paints, dull paints, colorful art paints, etc.

Paint is a kind of coating made with pigment and curing agents. Main production steps are as follows:

Pigment preparation: Pigment is an important component of paint. It should be prepared based on the desired color.

Binder preparation: The binder is an important component of paint. It is mainly for binding of pigment and curing agent.

Curing agent preparation: The curing agent is an important component of paint. It is mainly for paint curing.

Mixing: Prepare the paint by mixing the pigment, binder and curing agent according to specific proportions.

Fluidity adjustment: Add solvents or diluents to adjust the paint fluidity if necessary.

Quality inspection: Check the quality of the prepared paint, to ensure that the paint quality meets the requirements.

Packaging: Pack paint into containers for sale or use.

The ingredients and their proportions have a great impact on the performance of paint. It is necessary to strictly control the quality and proportion of ingredients, in order to ensure the paint quality.

I. Material selection

Materials for preparation of paint: pigment, UV thinner, iron oxide, wax, alum, water, petroleum ether, paint thinner, etc.

II. Steps

1. Fully mix the pigment, UV thinner and iron oxide, so that the pigment has certain durability and gloss.
2. Add appropriate amount of wax into the pigment, to improve the waterproof performance, anti-corrosion and weather resistance of paint.
3. Add alum and water to improve the viscosity and color saturation of paint.
4. Finally add petroleum ether and paint thinner, to make the paint easier to apply and dry.
5. Fully mix these materials and filter the mixture once.

III. Precautions for use

1. 1.Take safety protection measures during the preparation of pigment paint. For example, wear gloves, masks, etc.
2. 2.The paint is suitable for indoor or outdoor use. Keep it away from direct intense light.
3. 3. Conduct regular maintenance to extend the service life of paint.

We can make high-quality pigment paint at home according to the above steps. The homemade paint is not only economical, but also more secure and reliable to use, with excellent protective effects. However, we must pay attention to safety in the process of paint preparation.

Pigments are classified by color, chemical composition, particle size, etc. Different pigments have different effects on the properties of paint.

First, colors affect the appearance and optical properties of paint. In paint applications, the appearance, durability and stability of colors need to be considered. Colors of most paints in the market depends on pigments. For example, ferrite pigments can is suitable for production of red, brown, black and gray paint. Zinc oxide and titanium dioxide are suitable for production of white paint. In addition, colors affect the film thickness. Large pigment particles are convex, forming a coarse surface. The smaller the particle size, the smoother the film surface, and the higher the surface reflectance.

Secondly, the particle sizes of pigments have different effects on paint. Generally, the smaller the particle size, the better the color dispersion effect, and the higher the film durability. Therefore, an appropriate amount of pigment has positive effects on the film durability, adhesion and transparency. The particle sizes of pigments also affect the covering power. Pigments of larger particle sizes will form a smooth and thick film, thereby improving the covering power. Those of smaller particle sizes will form a finer film.

Furthermore, the chemical composition of pigments is one of the important factors affecting paint. Many pigments have protective properties. For example, titanium dioxide, chromium oxide and red iron slag can improve the resistance of paint to ultraviolet radiation of sunlight. In terms of prevention of metal rusting, basic lead, zinc oxide and other pigments can inhibit corrosion. Other pigments can improve the chemical stability and weather resistance of paint.

Finally, the action mechanism of pigments on paint is worth exploring. Red iron slag can dissipate heat by absorbing light, thus increasing the surface temperature of the film. With chromate as a passivating agent, chromium oxide has a similar principle to zinc yellow. It can prevent rust spots on the surface of paint. Titanium dioxide can enhance the covering power and prevent paint from yellowing. Therefore, the action mechanisms of pigments should be applicable to specific coating applications.