Based on the remarkable properties of PVC plastic, it is now used in many places of life. And these PVC sheets, are generally processed products. It adds a certain colorants in the production process to make the products more beautiful. But some people do not know much about this, today this article will introduce in detail.
PVC resin is a thermoplastic with undefined structures. The softening point of the resin is close to the decomposition temperature. It has begun to decompose at 140℃, and even more rapidly at 170℃. Because of its content of chloride atoms, the polyethylene molecule and its copolymers are generally flame-resistant with self-quenching and drop-free properties. It is a more unstable polymer that is also degraded by light and heat. It also has excellent chemical stability energy, and it is very valuable as an anticorrosion material. PVC is stable for most inorganic acids and bases and is divided for hydrogen chloride.It can be dissolved in ketones and aromatic solvents.
The colorants used for PVC plastics are mainly organic and inorganic pigments. PVC plastics have high requirements for pigments, such as high temperature resistance during processing, no migration in processing, light resistance, etc. Commonly used colorants are: 1, red is mainly soluble azo pigment, cadmium red inorganic pigment, iron oxide red pigment, phthalocyanine red, etc. ; 2, yellow mainly chromium yellow, cadmium yellow and fluorescent yellow; 3, orchid color mainly phthalocyanine blue; 4, green mainly phthalocyanine green; 5, white mainly uses titanium dioxide; 6, purple mainly is plastic purple; 7, black is mainly carbon black. In addition, fluorescent whitening agent is used for whitening; gold and silver powder are used for color printing; and bead powder astigmatism the plastic like pearl.
That’s a detailed introduction of “PVC plastic properties and the common colorants”. For more information, please keep paying attention to us.
Post time: Nov-05-2021