Pigment for Epoxy Resin - Color Pigment for Epoxy Resin Uses in 2024

17 Years of Experience in Color Pigment for Epoxy Resin Solutions - Original Epoxy Resin Pigments Manufacturer - KingChroma

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Epoxy resin color mixing requires the use of pigments, pigment pastes, pigment particles, etc. KingChroma can use the following types of pigments for epoxy resin:

Organic pigment: Organic pigment has bright color and is suitable for epoxy resin products with strong and bright colors, such as picture frames and home accessories.

Inorganic pigment: Inorganic pigment has the advantages of pure color, high brightness, good durability, etc. It is suitable for epoxy flooring, crystal glass and other transparent materials.

Metallic pigment for Resin: metallic pigment has the characteristics of metallic texture, peculiar color, and strong three-dimensional sense, etc. It is suitable for making alloy fittings and automobile exterior parts.

Pearlescent pigment: Pearlescent pigment has a unique pearlescent effect, which can make epoxy resin products produce three dimensional sense and glossy sense, and is suitable for making jewelry and handicrafts.

Epoxy Pigment Powder

color shift mica powder

Thermochromic Pigment

Photochromic Pigments

Pearl Powder

glow in the dark epoxy pigment

chameleon resin powder

UV Powder

Reflective Pigment

Pigment for Resin FAQs

  1. Organic pigments

Organic pigments are often used for epoxy resin coloring. They have high durability and fade resistance. They also have high color saturation, fluidity and dispersity. Common organic pigments include phosphate dyes, phthalocyanine dyes and COLORTREND 870.

  1. Inorganic pigments

Inorganic pigments are often used for epoxy resin coloring. They have heat resistance, corrosion resistance and high gloss. Due to high color stability, they are more suitable for long-term applications. Common inorganic pigments include titanium dioxide, ferrite particles, etc.

  1. Pigment thickeners

Pigment thickeners can be used with epoxy resin. They can achieve better coloring effects, and effectively reduce costs.

For the best coloring effects, dedicated pigments are preferred for epoxy resin. In addition, they should be compatible with epoxy resin, and have color complementarity and stability.

Epoxy pigments are colorants. They are particularly suitable for resin dyeing. But they are insoluble in epoxy resin. They may be powder, liquid or paste pigments. Some can cover resin colors, so they have glossy effects. Alcohol inks can maintain the properties of resin. Epoxy pigments should account for 5% to 10% of resin by weight.

Usually, epoxy resin is mixed with pigment by stirring. Curing agents are needed for color epoxy resin. Under normal circumstances, pigments are slightly adjusted by manual mixing or stirring. Intensive mixing may be required for dye mixture in large quantities. Epoxy pigments can be used for unique effects.

Epoxy resin adhesive is a common binder. It is widely used in construction, aviation, automobile, etc. In some special application scenarios, epoxy resin adhesive should be colors, to meet different needs. Common coloring methods are as follows.

  1. Coloring with pigments

Pigments are common colorants. An appropriate amount of pigment can change the color of epoxy resin adhesive. Commonly used pigments include pigment powder, pigment pulp and so on. First, the pigment is thoroughly mixed with an appropriate amount of resin. Then, an appropriate amount of curing agent is added. Finally, these materials are stirred. Note that excess pigments may affect the properties of resin adhesive.

  1. Coloring with pigment paste

Pigment paste is a kind of liquid to be pre-mixed with resin adhesive. It can be directly added into resin adhesive for coloring. Pigment paste has higher dispersity and stability, to better maintain the uniformity of color. Add an appropriate amount of pigment paste into resin adhesive, and stir them. 

  1. 3. Coloring with pigment sheet

Pigment sheets are a kind of solid pigment. They can be melted by heating, and added into resin adhesive for coloring. First, pigment sheets are melted by heating. Then, the pigment is dropped into resin adhesive, and the mixture is stirred. If the temperature is too high during heating, pigment sheets may be deteriorated.

  1. Coloring with pigment particles

Pigment particles are a kind of solid pigment. They can change the color of resin adhesive. First, add an appropriate amount of pigment particles into resin adhesive. Then stir them. Note that the particle size should be moderate. Too large particles may affect the fluidity of resin adhesive.

  1. 5. Coloring with pigment solution

Pigment solution is a kind of liquid to be pre-mixed with solvent. It can be directly added into resin adhesive for coloring. Add an appropriate amount of pigment solution into resin adhesive, and stir them. Note that the concentration of pigment solution should be moderate. Too high concentration may affect the properties of resin adhesive.

In short, epoxy resin adhesive can be colored with pigments, pigment paste, pigment sheets, pigment particles, pigment solution, etc. Pay attention to the amount and stability of pigment, as well as the properties of colored resin adhesive, to meet the requirements for coloring effects and properties.

Epoxy resin is often colored to change its appearance and properties. There are two common coloring methods: adding pigments or coloring agents, and mixing with varnish.

Pigments are directly added into epoxy resin. They are thoroughly mixed into a finish coat. This can lead to a uniform color, which is not easy to fade. But color deviation and adverse reaction are likely to occur.

Pigments are mixed with varnish. Due to the transparency of varnish, pigments will have bright colors. But the color in this method is less uniform than that in the above method. Compatibility of pigments and varnishes should also be considered.

Epoxy resin is an organic compound. It has good physical and chemical properties after curing. It also has high bonding strength on metallic and non-metallic surfaces. It usually contains two or more epoxy groups. It can be colored for better effects.

How to color epoxy resin?

  1. If the color of epoxy resin fades, first use the primary color (large consumption but low coloring power). Then use the dark color with large dyeing power (or conduct coloring) slowly and intermittently. Observe color changes while stirring. The light color should changeto a dark color. Do not add excess pigment with large coloring power.
  2. First, understand the floating of primary color of epoxy resin in multi-color paint, as well as changes in paint. Pay more attention to amino paints and vinyl perchloride paints.
  3. There are minor differences between the colors of paints and dry films. Paints are light-coloredin the wet state. Dry films have darker colors. Dry samples arecompared with dry films. Wet samples are dropped into paints. Check whether they have the same color. 
  4. Use paints with the same propertiesto prepare multi-color paints. Solvents should be compatible. Otherwise, poor compatibility may affect the quality of epoxy resin. It may also lead to stratification, precipitation or gelation. 
  5. Some auxiliary materials may be needed in coloring, such as dryers, curing agents and thinners, to avoid the impact on color.

What is the difference between epoxy powder pigments and liquid pigments?

Epoxy resin can be used in many different ways. Many people use pigments to color epoxy resin, thus making objects more creative. Color pigments are preferential for decoration or matching with the color of space. They are simple, cheap and compatible with epoxy resin!

Epoxy resin with colored pigment can be used in artistic projects and fixed articles at home. It may even be used as a sealant. As epoxy resin is hard in the dry state, it is a durable material. Liquid pigments are an option for epoxy resin coloring. Powder pigments also have good effects! Main differences are as follows.

Powder pigments

Powder pigments are composed of very small particles. They are absorbed by epoxy resin in the curing process, so that the color is evenly dispersed, and epoxy resin have a bright color. Powder pigments are often used for large-scale coloring and even multiple colors.

They are more cost effective than liquid pigments. In addition, they are popular for large-scale projects involving more colors and better adaptability. Preferably, powder pigments are slowly added on the hardener side of epoxy mixture. In this way, you have plenty of time to add pigments and adjust colors as needed.

Liquid pigments

Liquid pigments are composed of highly concentrated dyes, which are suspended in easy-to-mix liquids. They are ideal for mixing with solid epoxy resin, and making the bright color.

Since the particles of liquid pigments are larger than those in powder pigments, liquid pigments can be absorbed by epoxy resin very quickly and easily.

Mixing of liquid pigment with epoxy resin: First, add the pigment on the hardener side, until the desired color appears. Then, add resin into mixture to an appropriate proportion. Thoroughly mix them with a stirring blade or rod, depending on the amount of mixture at a time.

Curing of epoxy resin adhesive is a complex process of physical and chemical change. It is affected by many factors.

I. The prepreg or molding compound is produced due to wetting or impregnation of solids by epoxy resin adhesive. This is mainly affected by the compatibility between the adhesive and solid, as well as the viscosity of the adhesive.

II. A dense object is formed because of mold cavity filling or leveling. This is mainly affected by the fluidity, especially the viscosity of the adhesive. It depends on the adhesive formula and ambient temperature. Pressurization and vacuuming are helpful for mold cavity filling, to form dense objects.

III. The epoxy oligomer reacts with the curing agent and modifier under some conditions: solution → gelation → vitrification → three-dimensional cross-linked condensate. This is mainly affected by heating, including the preheating temperature, heating/cooling rate, curing temperature, curing time, post-curing temperature and time, etc. In addition, the curing pressure affects the curing reaction, and the compactness and shape stability of the product. Main influencing factors are the adhesive solution, ambient temperature and humidity.

I Cured epoxy resin is gradually produced in the curing reaction. This is affected by the adhesive formation and heating process.

V. The product is made gradually in the curing reaction of epoxy resin. This depends on the adhesive formula and heating process. It is also closely related to the surface properties of fibers, fillers, etc.

Accordingly, main factors affecting epoxy curing include the adhesive formula, and the surface properties of solids such as fibers and fillers.

Yes. The transparency of epoxy resin is usually affected by the following:

  1. Quality of epoxy resin. The transparency of epoxy resin is mainly related to its quality. High-quality epoxy resin usually has higher transparency. Poor epoxy resin has lower transparencydue to opaque particles, bubbles and other defects.
  2. Curing agents: Theyaffect the transparency of epoxy resin. Some havetheir own pigments, or react with epoxy resin to produce color compounds. This will lead to a decline in transparency.
  3. Solvents: They affect the transparency of epoxy resin. Some volatile solvents may lead to bubbles in epoxy resin. This affectsthe transparencyof  epoxy resin.
  4. Pigments: Some pigments affect the transparency of epoxy resin during dyeing. Some have large covering power. If too much pigment is used, the transparency of epoxy resin will decline.

Epoxy resin has excellent physical, mechanical and electrical insulation properties. They can be bonded with various materials. They can be flexibly used in different processes. Thermosetting plastics do not have these properties. Epoxy resin can be used in paints, compounds, castings, adhesives, dies and injection molding materials. They are widely applied in various fields.

Epoxy pigments are not suitable for outdoor use. They should not be directly exposed to sunlight and ultraviolet rays. They are suitable for use as primer. They are important in extensive applications, including the transportation, marine engineering, onshore buildings and underground pipeline engineering.

How to select and use printing reflective powder?

Printing reflective powder is dedicated for surface reflection of printed products. It is often applied on glow-in-the-dark prints, outdoor supplies, toys, crafts, etc. How to select and use

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