Qu’est-ce que le PVC?

PVC est l’abréviation de polychlorure de vinyle. À l’aide de matériel non cristalline comme matière première, Il est super performant en résistance à l’oxydation, forte résistance aux acide et la résistance de réduction. Polychlorure de vinyle a également la haute résistance et une excellente stabilité, et n’est pas inflammable, peut résister à la corrosion des changements climatiques et d’autres phénomènes. C’est un très bon matériel, en raison de sa haute sécurité, donc il peut être vu partout dans la vie.

Pendant ce temps, PVC, comme un produit en plastique avec énorme production mondiale, est divisé en deux types: soft and hard PVC, which provide different choices for different use occasions. Soft PVC is usually used as the surface material of floor and ceiling, while hard PVC material is more widely used in corrugated board, door and window structure and various chemical industry manufacturing. In addition, PVC material also has changeability. By adding different additives, the physical properties and mechanical properties of PVC can be changed, which can be used in different occasions. For example, le PVC souple ou dur mentionné ci-dessus peut même être fait dans un matériau transparent pour des besoins particuliers.

fonctionnalités

Matériel de PVC non seulement présente de nombreux avantages comme la résistance à la corrosion, non-inflammabilité, résistance d’isolation et d’oxydation, mais aussi a un volume élevé de ventes dans le marché des matériaux grâce à sa capacité de retraiter et coût de production faible. C’est aussi grâce à sa large gamme d’utilisations et des prix abordables. Une variété de fonctions n’a pas laissé ses preuves montée, but has been occupying a piece of land in the material market with cheap price. At present, the improvement and design technology of PVC materials in China have reached the international advanced level. From the previous need to import special PVC materials from abroad, now we can use PVC developed and produced by ourselves to replace the import, and start to export products to foreign countries.

Major hazard

Polyvinyl chloride is also a commonly used plastic. It is made up of polyvinyl chloride resins, Plastifiants, and antiaging agents. But the addition of plasticizer, anti-aging agents and other main auxiliary toxic, plastic plasticizer for daily use of polyvinyl chloride, mainly using dibutyl terephthalate, dioctyl phthalate, such as these chemicals are toxic, polyvinyl chloride anti-aging agent lead stearate is toxic. Polyvinyl chloride (PVC) products containing lead salts can precipitate lead in contact with ethanol, ether and other solvents. Polyvinyl chloride containing lead salt is used for food packaging and Fried dough sticks, Fried cakes, Fried fish, cooked meat products, cakes and snacks, which will make lead molecules spread into the oil, so it is not possible to use polyvinyl chloride plastic bags to hold food, especially not containing oil. In addition, polyvinyl chloride plastic products in higher temperature, such as 50℃ or so will slowly decompose hydrogen chloride gas, this gas is harmful to the human body, so polyvinyl chloride products should not be used as food packaging.

As disposable medical equipment products are mostly used medical-grade polyvinyl chloride (PVC) or polycarbonate (PC), and PVC processing in the thermal decomposition of steel has a strong corrosion, PC hardness, viscosity, so the plastic parts of the material requirements must be able to resist corrosion, wear and have a higher polishing performance. Most medical injection molding machines adopt the method of hard chromium plating with cylinder screw or make machine screw with stainless steel to meet the above special requirements. In addition, in order to prevent the process of PVC thermal decomposition gas, demande de transformation de l’aluminium surface placage modèle dynamique, mais aussi à la périphérique de la tôle aluminium placage traitement ou acier inoxydable production de plaque de métal en feuille, tôle plate-fell couture utilise le sceau de gel de silice non toxique, en cas de traitement en plastique du gaz dans le processus en cours d’exécution à l’extérieur (processus de traitement des matières plastiques de gaz peut être collectées au moyen de l’équipement spécial pour centralisé après que traitement de purification doit être rejeté dans l’atmosphère).

Le PVC est une source importante de dioxines. Dioxine (TCDD), the deadliest dioxin in the dioxins family, is a well-known carcinogen and hormone decomposer, and a toxic compound, causing great harm to humans and animals. Dioxins are produced when PVC is produced, recycled and destroyed in incinerators, or when PVC products are accidentally burned, such as in landfill.

In the case of a large number of demand, it is easy to appear mixed, uneven quality phenomenon. Especially in ordinary users to buy PVC materials, often easy to be small shop owners of the black heart boss. Poor quality PVC material in wear resistance, anti – pollution performance is far inferior to good quality PVC material. Products made of inferior PVC not only have poor functionality, but also have a very short service life. So everyone in their own purchase of PVC materials, please be sure to the relevant store for purchase. Above is about the content of what meaning PVC is, hope to be able to be helpful to everybody!