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black Thermochromic microcapsule

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black Thermochromic microcapsule

black Thermochromic microcapsule

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Unit Price

CNY 1200 / kg

Minimum Order

1 kg

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Product Description

Thermochromic material


The microcapsules are coated with a stealth dye, a color forming agent and a temperature controlling agent. By selecting different temperature control factors, it is possible to produce color materials with different temperature intervals.

2. Product Description

Principle of discoloration: low temperature color development and high temperature colorless

Product range available: -15C ~ 70C

Basic color: 15 colors can be provided for each temperature. Each color can be mixed with each other. Other color materials can be added. The following colors are close to the PANTONE color code. The color of the product is subject to the actual material.

Advantages of thermochromic pigments in plastic products:

Thermochromic pigments are suitable for injection molding and extrusion:

Its characteristics are: thick wall of the capsule, high strength, good heat resistance, easier to disperse evenly, and less residual color during decolorization.

Scope of application:

This product can be used for injection molding and extrusion molding of transparent or translucent plastics such as polyethylene (PE), polypropylene (PP), polystyrene (PS), soft polyvinyl chloride (S-PVC), AS, ABS and silica gel. . It can also be mixed with unsaturated polyester, epoxy resin, plexiglass or nylon monomer for casting, molding and curing.


When used for injection molding, extrusion processing or casting, molding, and curing, the color changing pigment is used in an amount of 0.5% to 1.0% by weight of the plastic. The color-changing pigment should be thoroughly mixed with the plastic particles (a small amount of white oil can be used when mixing). If the ordinary pigment is color-matched with the color-changing pigment, the ordinary pigment (or dye) is used in an amount of about 0.5 to 2.5% of the color-changing pigment.

Color masterbatch:

In mass production, color-changing pigments can be added to polyethylene wax or polystyrene wax to prepare a color masterbatch with a pigment content of 10%, and then mixed with plastic particles. This allows the discoloration pigment to be more uniformly dispersed.


The processing temperature should be controlled below 200 °C, not more than 220 °C, and minimize the heating time of the material. (High temperature, long-term heating will impair the discoloration performance of the pigment).


After the injection molding is finished, the cold water is rapidly cooled, and the color density of the product is better. (natural cooling, slow heat dissipation of the product will lead to product color fading or discoloration effect deterioration)

AWhen using color-changing pigments in injection molding and extrusion, other fillers or common pigments (such as titanium dioxide, calcium carbonate, barium sulfate, carbon black, etc.) should not be used in the plastic at the same time, otherwise the color change effect will be shielded.

B: When using color-changing pigments in casting, molding and solidification, the color-changing pigment should be added to the unsaturated polyester, plexiglass or nylon monomer to stir and disperse uniformly, and then the initiator or curing agent is added to start the polymerization or crosslinking reaction. Since the viscosity of the system rises sharply after the prepolymerization, the addition of the color-changing pigment at this time causes a lar

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