JULIANG company Reversible inorganic pigment thermochromic pigment powder for T shirt

What is thermochromic powder?

     Microencapsulated reversible temperature sensitive material called reversible temperature change color pigment (commonly known as: temperature change pigment, temperature sensitive powder or temperature change powder or thermochromic pigment). The particles of this pigment are spherical, with an average diameter of 2~7 microns (a micron equal to 1/1000 millimeters), and a temperature sensitive pigment is a microcapsule that changes color repeatedly with increasing or decreasing temperature. The inside is a discoloration material, and the outside is a transparent shell with a thickness of about 0.2~0.5 microns which neither dissolves nor melts. That's what it protects Discoloration of substances from other chemicals. Therefore, it is important to avoid damaging the coat in use.

A collocation between 15 basic colors:
Between the basic colors collocate according to a certain proportion, and can get many the color change effect.

Between thermochromic and common color pigment collocate.

Application:

1.R series temperature sensitive powder is most suitable for injection molding and extrusion:     R series (plastic grade) is a kind of color change powder specially developed for plastics. Its characteristics are: the thickness of cystic wall, high strength, good heat resistance, easy to disperse, the residual achromatic color.

2. Scope of application:
     can be used for polyethylene (PE), polypropylene (PP), polystyrene (PS), soft polyvinyl chloride (S-PVC), AS and ABS and other transparent or translucent plastic injection molding, extrusion molding. Can also be mixed with unsaturated polyester, epoxy resin, plexiglass or nylon monomer casting, molding, curing molding.
3. Dosage: 
     used for injection molding, extrusion molding, casting, machining or curing, pigment dosage amount of plastic 0.4~3.0%, usually 0.6 ~2.0%. thermochromic pigment and plastic particles to fully mix (mixed can use a small amount of white oil). If it is a common pigment with color powder, then the amount of ordinary pigment (or dye) is about 0.5-2.5% of the thermochromic pigment.
4. Color Masterbatch:
      in mass production, you can first thermochromic powder into polyethylene wax or polystyrene wax to make pigment content of 10% masterbatch, and then mixed with plastic particles. This will make the powder disperse more evenly.
5. Temperature:
     Processing temperature should be controlled at 200 degrees Celsius, the maximum not more than 230 degrees Celsius, and minimize the heating time of materials.
(high temperature and long duration heating will impair performance of thermochromic pigments).
6. Attention:

A.: When using color change powder in injection molding and extrusion, no other filling material or ordinary pigment (such as titanium dioxide, calcium carbonate, barium sulfate, carbon black, etc.) should be used in the plastics, otherwise it will block the discoloration effect.

B.: Casting, molding, curing pigment in pigment should be added unsaturated polyester, organic glass or nylon single internal mixing evenly, then add the initiator or curing agent polymerization or crosslinking reaction. Because of the rapid increase in viscosity after the polymerization, at this point, adding color paint will make a large number of pigment particles wrapped together, it is difficult to disperse evenly. In addition, the stirring operation at this time will also leave a large number of bubbles in the system.

C.: Careful selection of crosslinking agent or curing agent: in the process of curing epoxy resin and unsaturated polyester resin, its internal sometimes have a strong contraction stress, lead pigment microcapsule shell rupture, other chemical substances into the internal pigment lose its discoloration can. This occurs frequently when epoxy resin is cured at a thickness greater than 0.2 mm and polyamine curing agents are used.

D: Can not use mixing machines, kneading machines, high-speed dispersing machines, twin-screw extruder and other high shear equipment for mixing plastic particles with color change pigments. These devices can seriously damage the protective coating on the surface of the discolored pigment and make it lose its color change property. In addition, in the preparation of Color Masterbatch, should avoid discoloration of pigment, undergo repeated extrusion granulation operation.

E: Should avoid the use of phosphate stabilizer and plasticizer in PVC resin formulations, otherwise it will make the color injection molding residual color serious in achromatic state.

Inner packaging:

      1kg, 3kg, 5kg, 25kg with sealed and waterproof plastic bags.

       And also according to your need, customize bags and label.

Outer packaging:

     12-15kg and 25kg plastic drum and fiber drum with carton.

Q1: What is minimum?
A: According to your need. But if quantity is more, price and shipping cost have a discount.

Q2: Can I get sample for testing?
A: Yes, we can provide 10gs free sample to you, but you need to pay shipping cost.

Q3: Changing color principle?

A: Example of use principle is: If you want change color from Red to Yellow, use your yellow toner as background, then use our red temperature sensitive powder covered in the above, when the temperature is above 15 degrees, the red temperature sensitive powder turned colorless, then showed yellow background.