Washing-free high color fastness pad-dyeing process for heavy polyester blanket cloth
A technology with high color fastness and no water washing, applied in the field of printing and dyeing technology, can solve the problems of destroying the original style of the blanket, and achieve the effect of reducing sewage discharge and improving the dyeing fastness of pad dyeing.
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Embodiment 1
[0039] The washing-free high color fastness pad dyeing process of thick polyester blanket comprises the following steps:
[0040]1) Preparation of microcapsule-like liquid dye: put 100 g of dry powder disperse dye (red 4RL) filter cake in a ball mill, and ball mill it to a fine powder for 20 min at a high speed of 1200 r / min, then add 6 g of dispersant NNO and continue according to Ball mill at the above speed for 10 minutes, then add 10 g of polybutene powder and 3 g of glycerin under the control of the feeding speed of 30 g / min, continue to mill at the above speed for 30 minutes, add ultrapure water to the powder after ball milling, 2*10 4 Under the condition of HZ ultrasonication for 30 minutes, the solution was aided, and the concentration of the liquid dye with a mass concentration of 50% was prepared.
[0041] The liquid dye prepared by the above method is microcapsule-like, and the particle size distribution is between 300-820nm. Particle size distribution as figure...
Embodiment 2
[0048] Except that the concentration of the penetrant in the dyeing paste is different, the others are the same as in Example 1. Change penetrating agent concentration to be respectively 0,0.3,0.5g / L, carry out pad dyeing to polyester blanket according to the same pad dyeing process as embodiment 1, finish blanket dyeing; The fluffy and plump hand side) is tested for color index, and its color fastness is evaluated, and the results are shown in Table 1.
[0049] Table 1 Dyeing properties of blankets with different concentrations of penetrants
[0050]
[0051] It can be seen from Table 2 that the amount of penetrant has a significant impact on the level dyeing property of color paste dyed polyester blanket, and with the increase of penetrant amount, the level dyeing property gradually becomes better. When the penetrant amount is 0.1g / L (Example 1), the levelness reached the best; but increasing the amount of penetrating agent, its levelness gradually deteriorated. This is...
Embodiment 3
[0063] Except for the dyeing and baking temperature, the others are the same as in Example 1, and the baking color development temperature is changed to 170° C. respectively.
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