The resin is a new type of engineering plastic, which is prepared by chlorination modification of polyvinyl chloride (PVC) resin. The product is white or light yellow odorless, odorless and non-toxic loose particles or powder. After chlorination of PVC resin, the irregularity and polarity of molecular bonds increase, which increases the solubility and chemical stability of the resin, thus improving the heat resistance, acid, alkali, salt, oxidant and other corrosion resistance of the material. The mechanical properties of the numerical thermal deformation temperature are improved. The chlorine content is increased from 56.7% to 63-69%, the Vicat softening temperature is increased from 72-82 ℃ (to 90-125 ℃), the maximum service temperature can reach 110 ℃, and the long-term service temperature is 95 ℃. Among them, corzan CPVC has better performance indexes. Therefore, CPVC is a new engineering plastic with broad application prospects.
However, CPVC resin is easier to decompose than PVC during processing, so its production puts forward higher requirements for PVC stabilizer. When CPVC resin is processed, more heat stabilizers than PVC need to be added. Basically, CPVC can be processed with stabilizers for processing PVC, such as calcium zinc stabilizers, lead salt stabilizers, metal soap stabilizers and liquid organic tin stabilizers.
Post time: Jun-29-2022