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Introduction and general information polyvinyl alcohol
Characteristics of polyvinyl alcohol PVA and its main applications
One of the synthetic polymers that is sold in the form of granules or white powders is polyvinyl alcohol.
This product is known by the exclusive name of PVA and one of its most important features is its high solubility in water.
PVA is one of the environmentally friendly polymers; because it can be recycled; Also, this product has high elasticity and resistance, which has made it used in various industries.
This polymer is flammable and its smell is a bit pungent, if it is exposed to high temperature, it will have a strong adhesive power, that is why it is mainly used in the production of water-based glues and types of wood glue.
This polymer is well combined with other adhesive ingredients and creates an extraordinary adhesive strength, which is also suitable for sealing and sealing tiles and ceramics.
Polyvinyl acetate is mainly used for gluing pieces of furniture, binding books, packaging or connecting wallpapers, and its role in glue is as a softening and flexible material.
Due to the feature of not breaking and cracking, it is used as a layer for gluing glasses; Because they are resistant to light and have a lot of transparency.
In general, adhesives based on polyvinyl acetate alcohol are very suitable for gluing paper, wood, cardboard, leather, crafts and carpentry
The ability to dissolve in water has made polyvinyl alcohol-based adhesives not turn yellow over time, unlike other adhesives.
The more this polymer is used in the production of glue, the higher the adhesive power and the greater resistance to water and humidity.
In the paint industry, due to the lower price compared to acrylic resins, latex paints have been added to reduce production costs.
In addition, adding PVA to the paint can increase its concentration and soften it. Currently, the best water-based exterior paints are made from these polymers.
Polyvinyl alcohols can be mentioned as one of the ingredients of rubber in this industry. The tires obtained from this polymer will have higher resistance to oil, various solvents and tearing, and also have suitable mechanical properties that protect the tires from corrosion.
This raw material is widely used in the production of all kinds of food packaging, and since it is a completely harmless substance, it does not pose any risk to human health.
The use of this product in medicine and in the pharmaceutical market has made significant progress and polyvinyl alcohol eye drops are one of the most well-known medicinal products obtained from it.
