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Conversation about the gloss of textile printing dyeing-LAOAN

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Conversation about the gloss of textile printing dyeing-LAOAN

Date of release:2020-02-17 Author:Harry Click:

Conversation about the gloss of textile printing dyeing

1. Definition:

The degree to which the surface of the object approaches the mirror

Evaluation of glossiness:

It mainly depends on the illumination of the light source and the angle of observation. Instrument measurements usually use 20 °, 45 °, 60 °, and 85 ° illumination and detection signals. Different industries often use instruments that measure at different angles.

Factors affecting the gloss effect of textiles

1) When mixing color paste, increase the amount of resin, the gloss will increase; if you reduce the amount of resin, the gloss will decrease;

2) Thick coating, high gloss; thin coating, low gloss.

4. What is the gloss of textile printing dyeing related to?

First of all, it is closely related to the resin, and different resins have different gloss performance: the gloss of UPE and UV systems should be very high, and the gloss of supporting amino or isocyanate such as polyester high hydroxy acrylic acid (phenyl acrylic) alkyd is the second. High gloss and good freshness. PFEVE and low-hydroxy acrylic resins are relatively inferior. TPA thermoplastic acrylics have different performances depending on the solid viscosity TG, etc. Generally speaking, they are relatively low, CAB, NC and Chlorine and so on are even lower. Of course, the gloss of the same type of resin is also different, such as acrylic resin, the gloss of acrylic resin of the same hydroxyl group is different, which is related to the monomer used. Styrene monomer can increase the fullness and gloss of the paint film. The fullness of pure acrylic resin is usually not too good.

Secondly, the gloss is related to the pigment paste and filler used in the coating. The large particle size of pigment paste and pigment and filler usually has some matting effect. Coatings with too small particle size and high oil absorption also have a certain effect on gloss. The gloss and color saturation of different color pastes are also different. Take the Laoan brand paste as an example, the gloss of A014 red is better than A111 red and A011 red, and A024 golden yellow is better than A204 golden.

Again, the effect of thickeners is also very large. After relevant tests, the same formula was used with different thickeners, one gloss was more than 80, and the other was more than 40. This is because when using an inappropriate thickener, The emulsification of the system is not enough, affecting the gloss is inevitable. The gloss of the conventional 202A thickener is obviously lower than that of PTF thickener.

The solvent also has a certain effect on gloss. Personally, I think it is relatively small. For example, the volatile system is too fast to dry, which will definitely affect gloss. It may also cause whitening and haze. The gloss is higher when dried than when dried.

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