Welcome to Qinsun Instruments Co., Limited.
- +86-21-6780 0179 |
- info@qinsun-lab.com |
- Customer Services
The sublimation color fastness tester is suitable for testing the color fastness to hot pressing, ironing and dry heat (sublimation) of various colored textile materials and textiles, and can also detect the size of fabrics during hot pressing and dry heat treatment. Stability, QINSUN is a manufacturer of textile testing instruments, which can provide various textile testing instruments.Welcome customers who need to inquire in time.
In physics, a phenomenon in which a substance transforms from a solid state into a gaseous or vapor state is called sublimation, and the sublimation balance is similar to the evaporation balance. Because a solid dye is transferred from the surface of a dyed fiber to another fiber surface that is originally white or other color, especially the general dispersed dyes will melt or sublimate when heated to 150-250°C without sublimate. to be gasified directly from solid state in dry hot air. The test of sublimation fastness and dye sublimation point of printed and dyed textiles is closely related to the temperature of the sample in contact with the hotplate, the pressure applied to the sample, the choice of the interlining material and the physical properties of the fabric. To ensure that the test results have good reproducibility and high accuracy, it is necessary to change the variable conditions in the test,
Experimental test:
1. Selection of preload
Fabric sublimation color During the speed test, the function of the pressure is to ensure uniform contact between the sample and the interliner, so that the color is applied evenly on theinterlining can be colored and it is easy to judge the quality. The test showed that when the pressure is less than 10cN/cm2, the contact between the heated solid surface and the sample and the interliner is uneven, resulting in an uneven number of spots. When the pressure is between 20 and 80cN/cm2, the influence on the painted sample and the degree of coloring do not change. For this reason, the pressure of 4kPa is selected for the color fastness tester for textile dye sublimation.
2. The influence of interlining material on the sublimation color fastness test
In the sublimation color fastness test of textile dyes, the raw material and physical properties of the white interlining are important for the coloring degree of the sampling relationship. Nylon, polyester, triacetate fiber, viscose fiber and pure cotton cloth dyed with disperse dyes were used as interlining, and the polyester fabric was heavily stained. During heatingtting process, some white interlinings are slightly discolored and blotchy, such as the phenomenon that nylon fabrics become slightly yellow after heating. The influence of the interlining on the sublimation color fastness test is also related to the physical properties of the interlining. Since the heating test time is only 30 seconds, the heat energy is transferred to the sample through the interliner, and the thickness and density of the interliner will affect the heat transfer to the sample. We tested at 150°C, 180°C, and 210°C for 30 seconds with acetate fiber fabrics in different colors, such as blue, purple, and orange (approximately 0.028 mm), using a2. Three types of superposition of three layers of interlining were tested and the result was that only the interlining that came into contact with the sample was stained, while the staining of the test with three superimposed interlinings was slightly reduced and the thickness ofthe interlining was in the range of 0.1 to 0.6 mm Little effect on sublimation color fastness.
