Polyester fiber gloss value is an indispensable part of quality inspection. How to use a sheen gloss meter to measure the gloss of polyester fiber?
Polyester fiber, as a widely used chemical fiber, has good fiber-forming properties and mechanical properties, high strength, light resistance, heat resistance and acid and alkali resistance, good processability and ease of spinning, and can be pure-spun and blended. Or intertwined. Fiber gloss has a greater relationship with fiber cross-section morphology. When a beam of parallel light is irradiated on the fiber surface of different cross-section morphology, different gloss effects will occur. Due to the different cross-sectional shapes of the fibers, different gloss is visually felt. With the addition of different amounts of matting agents (dioxide diamonds), different gloss fibers can be prepared to meet the needs of users, forming super-gloss fibers, bright fibers, semi-matt fibers, and full-matt fibers.
For example, a triangular cross section, when light is irradiated on it, can be transmitted out of the edges inside the fiber, so that the gloss at the edges that produce total reflection is weak, and the gloss outside the other edges is strong. When the angle of incidence changes, the edges that produce total reflection also change, thus creating a "flash" effect. In addition, due to the triangular prism effect, the dispersion effect is produced when the light is emitted, giving people a special feeling. Therefore, the shaped fiber changes the "aurora" of the round fiber. In particular, the hollow shaped fiber has a correspondingly thin reflective layer and internal reflection. The combination of surface reflection and internal reflection can enhance the intensity of reflected light, so the hollow triangular fiber has better gloss effect.
For another example, in the contrast gloss test of ordinary acrylic fibers, profiled acrylic fibers, and silk fabrics, the contrast gloss of silk is the largest, and the profile of profiled acrylic fibers is greater than that of round fibers, which is close to that of silk.
Which of polyester and nylon has high gloss?
Polyester imitation silk has a strong feel and bright luster, but it is not soft enough to have a glittering effect. Tighten the silk surface with your hands and loosen without obvious creases. The warp and weft are not easy to break after getting wet.
The gloss of nylon is relatively dim, and the surface has the feeling of being coated with a layer of wax, and the color is not bright. The hand feels stiff, it is loosened after pinching the fabric, there are creases, and it can slowly return to its original shape. Warp and weft fastness.
The gloss of polyester fiber is an important parameter to test its quality, so it is usually tested with a precise sheen gloss meter. For example, the general-purpose 60-degree sheen gloss meter LS192 from Linshang Technology has a range of 1000GU. Both high-gloss and low-gloss materials can be tested because gloss is a relative value. It can be used when there is no uniform standard in the applied industry. If the industry has a uniform standard, it is best to use the same angle of testing. Therefore, when selecting the measurement angle, you should choose differently according to different situations. Linshang sheen gloss meter LS192 has the characteristics of easy to use, stable performance and accurate measurement.