This type of additive is used in products to improve the durability of a part exposed to ultraviolet radiation. In general, all plastics degrade when exposed to sunlight, affecting their appearance and physical properties. This degradation is usually manifested by yellowing of the plastic in the final product. When used in conjunction with antioxidant additives for plastics, premature degradation is prevented and the service life is improved and extended.
This type of additive lubricates the polymer by interrupting the degradation reactions that occur in the material when it is subjected to continuous abrupt temperature changes and exposure to the elements. As the name suggests, they prevent oxidation of the materials, which in the case of plastic, consists of the degradation of the chemical bonds of the plastic, causing cracks, color changes and loss of physical properties. The choice of a good antioxidant stabilizer guarantees optimum processing, quality, safety and durability of the plastic product.
Uses of plastics
Polymers have revolutionized the materials industry and lowered the cost of end products. In this article, we explain the different types of plastic materials most commonly used, their properties and uses.
Plastic is a lightweight, durable, inexpensive and easy-to-modify material. It is made up of polymers, which are large organic molecules composed of repeating carbon units or chains called monomers, such as ethylene, propylene, vinyl chloride and styrene.
In general, plastic materials can be divided into thermoplastics and thermosets. When heated, thermoplastic components can be repeatedly molded and deformed, whereas thermoset materials cannot be remolded after formation. Thermoplastics are more common and include, among others, polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyvinyl chloride (PVC) and polystyrene (PS). Some thermosetting plastics are polyurethane (PUR) and epoxy resins or coatings.
Properties of plastics
Monomers are the building blocks of the structure of plastics (e.g. ethylene). They are simple molecules (carbon and hydrogen). The union of many monomers forms a polymer (e.g. polyethylene).
It is produced through terephthalic acid and ethylene glycol by polycondensation. There are two types: textile grade and bottle grade; for bottle grade it must be post-condensed, and there are different colors for these uses.
It is a thermoplastic manufactured from ethylene (made from ethane, one of the components of natural gas). It is very versatile and can be transformed in different ways: injection, blow molding, extrusion or rotational molding.
It is produced from natural gas. Like HDPE, it is highly versatile and can be processed in different ways: injection, extrusion, blow molding and rotational molding. Its transparency, flexibility and economy make it present in a variety of containers, alone or in conjunction with other materials and in a variety of applications. Advantages
Plastic is a material made up of organic or synthetic compounds that have the property of being malleable and can therefore be molded into solid objects of various shapes. This property gives plastics a wide variety of applications. Its name derives from plasticity, a property of materials, which refers to the ability to deform without breaking.
In 1839 Goodyear in the United States and Hancock in England developed in parallel the vulcanization of rubber, i.e. the hardening of rubber and its increased resistance to cold. This was the beginning of the commercial success of thermosetting polymers. The plastics industry began with the development of plastics.
The plastics industry begins with the development of the first thermoset plastics by Baekeland in 1909. Baekeland produced the first synthetic polymer and also developed the plastic molding process, which enabled him to produce various articles of commerce. These early plastics were named Bakelite in honor of their discoverer. Bakelite is formed by a condensation reaction of phenol with formaldehyde. Baekeland’s first synthetic polymer is called bakelite.