Generally speaking, after washing and refining, the raw rubber is mechanically treated to obtain the necessary plasticity, and then the vulcanizing agent, iron oxide pigment, zinc oxide, calcium carbonate and other fillers are added to control to obtain the rubber blank. Reprocessing and forming various rubber products.
Usage of iron oxide pigments on plastics if the products used on asbestos plastic brake pads are mixed with resin, asbestos and iron oxide pigments, the viscosity is adjusted by solvent, kneaded and dried, and then the asbestos plastic is put into a press to form wood grain decorative paper.
Coloring method of iron oxide pigments for PVC Plastics: first, mix the iron oxide pigments and plasticizers (such as zinc phthalate) into thick paste (the dosage is divided into 2:1, 1.1, l:o.5, etc. according to the oil absorption), put them into a flat roller machine or a three roller machine for grinding (with transparent film and opaque film), and then mix each component with the color paste according to the transparent or opaque film formula until no color filaments, color spots and spikes are produced.
Put the colored PVC slurry into the coater, directly and evenly coat it on the glass plate, after static, drying and defoaming, put it into the 180 ℃ oven for plasticization, take it out after 10 minutes for cooling, and the PVC turns into a colorless or colored film.
