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A plastisol is a colloidal dispersion of small polymer particles, usually polyvinyl chloride (PVC), in a liquid plasticizer. When heated to around 180 °C (356 °F), the plastic particles absorb the plasticizer, causing them to swell and fuse together forming a viscous gel .
Polymer clay plastisol is also categorized as a plastigel because of its rheological properties. [5] It is a high yield thixotropic material: when a sufficient force is applied, the material yields, flowing like a viscous liquid until that force is removed, whereupon it returns to being a solid.
The PVC coating (vinyl Organisol or Plastisol) contains chemicals to achieve the desired color, water, mildew resistance, and flame retardancy. Fabric can also be manufactured with levels of light transmission that range from very transparent to completely opaque.
PVC was synthesized in 1872 by German chemist Eugen Baumann after extended investigation and experimentation. [12] The polymer appeared as a white solid inside a flask of vinyl chloride that had been left on a shelf sheltered from sunlight for four weeks.
Plastisol is the most used material for dip moulding because it is easy to use and affordable. Other materials are used, such as latex , leneoprene, polyurethanes , silicones and even epoxy . Operating Mode
Plastisol is a flowed-in compound, usually a dispersion of PVC resins in plasticizers. It forms a solid, self-bonding, sealing gasket in the closures. Plastisol liners are used in metal twist-off and metal continuous thread screw caps for use on hot-pack food products where the preservation of a vacuum is essential.
The invention of plastisol in 1959 provided a more durable and stretchable ink than water-based inks, allowing much greater variety in T-shirt designs. Very few companies continue to use water-based inks on their shirts; the majority prefer plastisol because it allows printing on varying colors without the need for color adjustment at the art ...
In polymers, such as plastics, thermal degradation refers to a type of polymer degradation where damaging chemical changes take place at elevated temperatures, without the simultaneous involvement of other compounds such as oxygen.