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Application examples of pearlescent pigments

2021-01-19 H:05:22
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Pearlescent pigments are widely used in various plastics. The following are examples of the application of pearlescent pigments in several plastics:

(1) Polyolefins Polyolefins have been stabilized with phenolic antioxidants before processing and molding. When pearlescent pigments (ordinary grade) containing TiO2 are mixed with polyethylene hydrocarbons, the phenolic groups of the antioxidants will interact with TiO2, causing the color to turn yellow, so special attention should be paid to this. Our company recommends the use of AY series (yellowing resistant) pearlescent pigments. The AY series pearlescent pigments undergo a special post-treatment process to overcome the yellowing phenomenon of ordinary pearlescent pigments in use.

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(2) Polyvinyl chloride pearlescent pigments can be used for both rigid PVC and soft PVC. The higher the transparency of the PVC compound, the greater the brightness. When choosing a stabilizer, it should be ensured that it remains transparent after coloring and stabilization, so that the pearlescent effect can be better reflected. However, the iron particles in certain PVC formulations are likely to cause a decrease in stability, because when using iron-containing mica pearlescent pigments, a stability test must be carried out first.

(3) Plastics (PMM, PC, PA), etc. that must be dried before processing. Pearlescent pigments generally have a low water content and a low absorption water. Hygroscopic plastics must be dried before use. When resins and pearlescent pigments are used in their masterbatches, the drying of the raw materials and masterbatches is very important. In actual operation, the deaeration port of the twin-screw extruder can be used as an outlet for moisture.

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Shenzhen Esong Technology Co., Ltd.

Contact: Miss Cui

Mobile: 18926475200

E-mail: 1204047160@qq.com

Address: Building B, Kaixin Industrial Park, No. 52, Langyue Road, Tangxiayong Community, Yanluo Street, Baoan District, Shenzhen



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