by: nathan decker & will ennis by: nathan decker & will ennis
Post on 01-Jan-2016
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Advantages Of Continuing To Manufacture PVCPVC is used in almost all everyday items
Commercially: pipes, window frames, sewer systems, rain gutters, siding, airplanes, factory machines, car parts, toys to name a few
Personal Use: water bottles, vinyl records, credit cards, wall papers, flooring, garden furniture, binders, and pens
Clothing: when PVC is treated with a plasticizer, it can be used in clothing material
90 % of the plasticizer market is consumed by PVC products
What Exactly Is PVC?PVC stands for polyvinyl chlorideIt is the third most commonly made plasticIt is used in construction the most because it is
durable, affordable, and easy to work withPVC is a polymer, which is made up of chains or
rings of linked unitsPVC is composed of carbon, hydrogen, and 57 %
chlorinePolymers usually have high melting and boiling
points 100-260C
Petroleum In PVC43 % of molecular weight of PVC comes from oilPVC is the least dependent plastic on oilOnly 4 % of the total oil demand is used to make
plasticsOnly 1/8 of the 4 % is used to make PVC
History of PVCPVC is one of the oldest synthetic materials and
the longest history in industrial manufacturingPVC was accidently discovered on at least two
different occasions in the 1800s-once in 1838 by a French Chemist and again in 1872 by a German scientist
In 1913 a german inventor patented his production of PVC
In the 1950`s, the volume of PVC production increased through out the world
During this time PVC became known as what we still call it to this day-vinyl
Durability of PVCLong-term - 64%:
Pipes, windows, doors, furniture, etc. Its useful life goes from 15 to 100 years.
Medium-term - 24%:Electric appliances, cars, tapestry, hoses, toys, etc. Its useful life goes from 2 to 15 years.
Short term - 12%:Bottles, packaging, blisters. Its useful life goes from 0 to 2 years.
Completely harmless to humans and the environments
Resists fire and weather storms, water proof, and can be used as an insulator
Manufacturing PVCStep 1: Reaction-chemical reactions combine small
monomer molecules to form large chain-like polymers
Step 2: Recovery-vinyl chloride monomers that did not convert to polymers are removed then recycled and reused
Step 3: all remaining water is removed from the polymer liquid, called slurry, which then results into a white powder
Step 4: the white powder is called white resin-resin is packed in 25 kilogram bags or one ton bags or poured directly into tanker trucks
Recycling Process of PVCStep 1: Pretreatment: PVC is physically prepared
to be changed back into a raw materialStep 2: Dissolution: Waste is combined with a
prepared solvent in a closed reactor which releases a mixture of compounds
Step 3: Separation: centrifuging, decanting, and cycloning are used for separation of the compounds
Step 4: Precipitation: Steam is injected to completely evaporate the solvent
Step 5: Drying: Slurry is dried and processed water is treated before discharge-more than 99.9% of the original solvent is recovered after this process
Disposal of waste products PVC is safe in disposal PVC can be handled safely by all parts of an
organized waist program PVC can be mechanically and feedstock recycled
or handled in waist-to-energy programs
Project: In Chemistry last year we were assigned a project that included a researched paper, visual aids, power point and oral presentation of a product that was composed of petroleum. I chose to present on Polyvinyl Chloride (PVC). I really enjoyed this project because my dad is a plumber and I have a good bit of knowledge about the uses of PVC in plumbing and general construction. I learned quite a bit more from all the research, for example, PVC was accidentally discovered once by a French chemist inn 1838 and again in 1872 by a German scientist. I also learned that every time we say the word ‘vinyl’ we are talking about PVC!
The oral presentation to the class was especially important to me because I had put together an interesting paper and wanted to share my work and enthusiasm with the class. I demonstrated how to affix different diameter pipes using special glue. I built a marshmallow molecule of PVC to show the class what a complex structure it is. I included the class in the construction of the PVC molecule, which everyone seemed to enjoy. Following my presentation I felt comfortable that everyone now knew a little bit more about this amazing substance.
This project demonstrates the following expectation:Effective communication: I used many different visual aids and had a strong oral presentation. I used good eye contact and engaged the audience (my class) in the topic as I had them participate in the demonstration. I was surprised when my teacher commented how good it was.
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