orupalcd
07-09-21 0 Odsłon

What is PVC (PolyVinyl Chloride)?

    Polyvinyl Chloride (PVC or Vinyl) is an economical and versatile thermoplastic polymer widely used in building and construction industry to produce door and window profiles, pipes (drinking and wastewater), wire and cable insulation, medical devices, etc. It is the world’s third largest thermoplastic material by volume after polyethylene and polypropylene.

    It is a white, brittle solid material available in powder form or granules. Due to its versatile properties, such as lightweight, durable, low cost and easy processability, PVC sheet is now replacing traditional building materials like wood, metal, concrete, rubber, ceramics, etc. in several applications.

    Basic Forms of PVC(including PVC rod)

    Polyvinyl Chloride is widely available in two broad categories: Flexible and Rigid. But, there are more types like CPVC, PVC-O and PVC-M.

    Plasticized or Flexible PVC (Density: 1.1-1.35 g/cm3): Flexible PVC is formed by the addition of compatible plasticizers to PVC which lower the crystallinity. These plasticizers act like lubricants resulting in a much clearer and flexible plastic. This type of PVC is sometimes called as PVC-P.

    Unplasticized or Rigid PVC (Density: 1.3-1.45 g/cm3): It is a stiff and cost-effective plastic with high resistance to impact, water, weather, chemicals and corrosive environments. This type of PVC is also known as UPVC, PVC-U or uPVC.

    Chlorinated Polyvinyl Chloride or perchlorovinyl: It is prepared by chlorination of PVC resin. High chlorine content imparts high durability, chemical stability and flame retardancy. CPVC can withstand a wider range of temperatures.

    Molecular Oriented PVC or PVC-O: It is formed by reorganizing the amorphous structure of PVC-U into a layered structured. Bi-axially oriented PVC has enhanced physical characteristics (stiffness, fatigue resistance, lightweight, etc.).

    Modified PVC or PVC-M: It is an alloy of PVC formed by addition of modifying agents, resulting in enhanced toughness and impact properties.

    Polyvinyl Chloride (PVC) is one of the most widely used polymers in the world. Due to its versatile nature, PVC, or other plastic rod, is used extensively across a broad range of  industrial, technical and everyday applications including widespread use in building, transport, packaging, electrical/electronic and healthcare applications.

    PVC, including soft PVC sheet roll, is a very durable and long lasting material which can be used in a variety of applications, either rigid or flexible, white or black and a wide range of colours in between.

    The essential raw materials for PVC are derived from salt and oil. The electrolysis of salt water produces chlorine, which is combined with ethylene (obtained from oil) to form vinyl chloride monomer (VCM). Molecules of VCM are polymerised to form PVC resin, to which appropriate additives are incorporated to make a customised PVC compound .

    The PVC production process consists of 5 steps:

    The extraction of salt and hydrocarbon resources

    The production of ethylene and chlorine from these resources

    The combination of chlorine and ethylene to make the vinyl chloride monomer (VCM)

    The polymerisation of VCM to make poly-vinyl-chloride (PVC)

    The blending of PVC polymer with other materials to produce different formulations providing a wide range of physical properties.

    PVC sheet, PE sheet and PP sheet have excellent corrosion resistance and weather resistance. The working temp is 33 deg F to 160 deg F. and the forming temperatures of 245 deg F. It is good electrical and thermal insulator and has a self-extinguishing per UL Test 94. PVC applications are almost unlimited. It's the most widely used member of the vinyl family. It is excellent when used for corrosion-resistant tanks, ducts, fume hoods, and pipe. Ideal for self-supporting tanks, fabricated parts, tank linings, and spacers. It is not UV stabilized and has a tolerance of +or 10%. Not FDA approved materials. Colors available: Gray PVC Type 1 Sheet, White PVC, Clear PVC.

>http://www.cngoodpvc.com/

  Wyślij wiadomość

Related ads

State of the art baby strollers

State of the art baby strollers     The current work is an attempt to design and fabricate an ergonomic baby stroller with the latest state of the art features. A review on the design of baby strollers in the previous years was done ranging from the year…

Herramientas y equipos básicos de Bar - Guía del camarero

 Herramientas y equipos básicos de Bar - Guía del camarero     La primera vez que camine detrás de la barra, notará todas las wine tools y dispositivos parpadeantes de la barra que pueden ser desconcertantes.En la parte superior de cada botella hay…

Wide Application of High Shear Emulsifying Machine

High shear emulsifying machinef is our new product with advanced technology from home and abroad, which strictly complies with the GMP requirement. It is widely used for mixing, dispersing, shearing and homogenizing all kinds of viscous liquid and pastes…

How Cement Mixers Work

  In addition to the mixing energy applied to the fresh concrete (i.e. shearing during mixing), the shear history after mixing is also important. This applies especially to binder rich concretes like the different types of high performance concrete (HPC).…

Preparation of activated carbon from biomass and its’ applications in water and gas purification

Due to its versatility and wide range of applications, activated carbon is widely used as contaminant removal media. Recent research have focused on enhancing the effectiveness of activated carbon by modifying their specific properties in order to enable…

Report this ad