Polypropylene is one of the highest thermoplastics in terms of tensile strength. The fragility rates of polypropylene are less than other plastic products. Moreover, the abrasion properties of polypropylene are very high. It shows a medium value as friction coefficient. Polypropylenes are not affected by steam below 150 degrees, which makes them a highly resistant plastic against heat. Moreover, their resistance to open air is one of the features that makes them popular in production. Polypropylene is not affected in any way by diluted acids and can show a certain level of resistance against chemical acids. Since polypropylene is a plastic product without electrical conductivity, it is very suitable for use in insulation materials and isolation processes. Its density is less than other thermoplastics. The welds of these plastics are easily accessible and suitable for machining. It can be easily adhered with suitable adhesives. Since it has a moldable structure, it is very easy to print on it and use it for advertising.
In today's world, there are approximately 150 types of polypropylene and the production of these polypropylene types is still being produced today. The produced polypropylene types may differ from each other in terms of physical properties, but the general physical schemes of polypropylenes are the same. The melting temperature of each polypropylene is between 150 and 170 degrees. There is no polypropylene type that shows a value above or below this value. Likewise, the melting point of polypropylene is 21 cal/g. The density value of propylene varies between 0.90 and 0.929.
The chemical resistance of polyrpopylene is better than other thermoplastic products. It does not rot as a result of the contact of acid and base materials and is not affected by this contact, and does not show a swelling reaction in contact with salt water. It can also show good resistance to alcohol and chemicals contained in cleaning products such as detergents. Swelling may occur in polypropylene materials as a result of contact with high-temperature oils. It can swell in hydrocarbons and halogenated hydrocarbons, just like it does in hot oils. In the interaction with heat and light, it is affected more harmfully than another plastic product, polyethylene. Therefore, during the production of polypropylene, light is absorbed by using ultraviolet light absorbers so that the lights do not damage it. In addition, antioxidant substances are used to absorb heat.
Polypropylene is a thermoplastic used in many important sectors and products such as most household appliances we use in our daily life, medical products in hospitals and laboratories, car parts in the automotive industry, pipes and fittings used for installations, electrical cables. And it is the safest and healthiest plastic product used today. For now, it does not cause any harm to human health and is easy to recycle.