1, pvc cable in the role
As a filler, calcium carbonate powder in the PVC cable pellets have reduced the cost of formula, in the PVC compound plays an incremental reinforcement role.
Second, calcium carbonate has the function of adsorbing ions in it, which can reduce the free dissociation of conductive ions in the PVC system, which can not only improve the insulation performance of the volume resistivity of the product, but also improve the thermal aging resistance of the cable material and improve its thermal deformation Sexual and mechanical properties.
The role of calcium carbonate in pvc cable
In addition, it can also effectively improve the PVC cable pellets, extrusion process performance and pay-off performance.As for the amount of calcium carbonate and low temperature impact embrittlement, elongation, loss of quality and other properties are closely linked.
The role of calcium carbonate in the cable is very important, not only can improve product performance, but also make the cable more safe and reliable to use.
2, the role of polyvinyl chloride film production
PVC film used in the production of polyvinyl chloride particles higher prices, the film is blown film production without adding any filler, high production costs, such as the use of 'activated' of the 6000-mesh wet process of heavy calcium carbonate powder as the main , Made of polyvinyl chloride film for the production of film-grade calcium carbonate filled masterbatch, the price is only about half the PVC particles; without affecting the performance of the film, as a filler added, you can effectively reduce PVC film production costs.
The 'activated' 6000 mesh wet process of heavy calcium carbonate powder to be extruded granulation, made of calcium carbonate filled masterbatch, you must add a higher melt index of polyvinyl chloride or polypropylene, and the role of lubricant dispersing agent , Mixed by 200L high mixer made of aggregate, and then by φ65 parallel to the twin-screw extruder extruded pelletizing.
Experiments show that the calcium carbonate filled masterbatch in the PVC film blowing process, the added amount of less than 10% of the transparency of the film produced without any effect on the transparency of the film when the addition of 10% -15% gradually decreased, but the film No effect on performance.