An ideal material for advanced technology structures,
PVC is the first letters of the chemical names of "Poly-Vinyl-Chloride". PVC is a plastic alloy with long-life, resistant to weather conditions and sound been constituted with the help of suitable and required additives.
It is consumed around 23 million ton / year in the world and around 5.5 million ton / year in Europe
When mixed with plastic-alloyed materials, PVC is emerged as result of refraction of oil at small amounts. In “waste product” category due to rock salt electrolysis, chlorine is bound with ethylene and used effectively with no emission to atmosphere. It is emerged vinyl chloride PVC’s output products from sodium vinyl chloride electrolyte.
It is exposed as output product of Vinyl chloride PVC from ethylene, crack gas of petroleum and chlorine with sodium chloride electrolyte. Polyvinylchloride (abbreviation PVC) is also created as monomer with many vinyl chloride molecules, in other words a polymer is tied with its chains to many chains. Another powder is obtained from the resulting product of vinyl chloride in gas form, it is in a solid object shape and it is solid and rough and it is not possible to work on it without processing. Auxiliary materials and additives are needed for processing.
PVC is an amorphous alloy, in other words It has no crystallization data and therefore it is transparent. Due to this formation, it provides the plastic additives to get integrated to plastic structure homogeneously. In this way, the properties of PVC are extraordinarily combined and as a result of this, PVC is used in many places.
There is no other plastic alloyed material other than PVC that can be used with multi-purpose. With the selection of proper additives, PVC can be processed in 180-200°C without been decomposed. The “shape changes” of this plastic alloy is possible under low temperatures. In these kinds of processes raw materials are combined and pipes, hoses, profiles, foils and plaques are extruded (divided as netting), wires are coated, insulated guide rails are shaped in cylinders, ready parts are poured by belching and empty bodies are constituted by blowing.
1st Argument: "PVC production from Vinyl Chloride"
It is suggested that vinyl chloride induce cancer and therefore people who are working with PVC or the producer of it or the people who process PVC materials are threatened with cancer.
However, the reality is that, all the dangers that may be caused due to working with PVC are known today. Today, the PVC production is carried out only in closed reactors. The monomer ratio remaining in the monitors can be checked during the polymerization process and when the remainder ratio shows 1 ppm value, the reaction process will be halted. The meaning of 1 ppm is as follows: It means 1 particle in 1 million particles and in another word (to make it simple by means of visualization): 1 person with a red hat in a crowd of 1 million people with blue hats.
No problem has ever been encountered during the process of PVC. Prognose AG company has conducted a research on the request of "Greenpeace" and it has been determined that if any other substance is used instead of PVC, an additional cost of 3 billion Euro must be spared. The German Federal Ministry for Construction, Housing and Urban Planning stated in its report of "Using PVC products in the Construction Industry" that there is no finding to point out that utilization of PVC products causes any health concerns.
2nd Argument: "Stabilizers with heavy metal contents (firmer)"
In this context, there are thermal stabilizers containing Cadmium (Cd) and Lead (Pb). This application can be carried out with stabilizers containing Barium (Ba) and Zinc (Zn) or Calcium (Ca) and Tin (Sn) under prevailing conditions. Cadmium is prohibited in EC region as well as in Switzerland. Many of the water insulation membrane producers have ceased making stabilizers with Lead and Cadmium components for many years now.
3rd Argument: "Softeners"
Generally speaking, in order to call a substance as poisonous, a small amount of it must cause a harmful effect. In this context the softeners are not poisonous. The softeners are in none of the poison classification according to any law or regulation. The toxicity level of the softeners is much lower than those substances that we use in our daily lives; for instance Sodium chloride (table salt). The softeners and especially DOP and DINP are researched the most and according to the researches carried on rodents (mice and rats) it is determined that no carcinogen effect has been found even such animals when they were subject to these substances with doses corresponding to environmental quantities during lifelong application period. Despite this fact, the softeners are consumed by the microorganisms easily. According to the result of the researches conducted, the softeners do not accumulate in water, soil or in the air.
4th Argument: "PVC during fire"
It was suggested that hydrochloric acid and dioxin develop when PVC is burnt. However, the reality is as follows: The gaseous matter that develops with the fire contains toxins all the time regardless of the material that is burning. The danger poisoning caused by primarily from carbon monoxide (CO); that is released from not completely burnt material and generally is the reason for the death. The PVC that melts, burns or extinguishes by itself releases many other separable products beside hydrochloric acid and dioxin and according to the level of scientific information we have today , these elements do not add toxin additives to the burning gaseous. That means the poisoning is caused primarily due to CO. It is odorless, causes fainting and is a deadly poison. With the creation of hydrochloric acid, a 5 ppm density can be detected by the human senses. It activates the human glands and in this manner it provides a warning. Under such conditions, there is ample time for getting out to a safer environment.
Especially in the case of bitumen insulation membrane materials used in the roofs, the product has a high burning property and therefore causes a fast advancement of the roof fires with high temperatures and possible burning liquid flow downwards from the deck sheet. In this respect, the PVC based water insulation membranes provide much better specifications when compared to bituminous membranes.
5. PVC Recycling
An important advantage of PVC is that it can be recycled. The PVC is used widely in our buildings today and they can be processed with an addition of various softeners as per the requirement. These materials van even be recycled after 25 or 30 years without encountering any problems, in other words, they can be included in the cycle. Therefore, the scrap PVC should not need to be burned or stored as a waste. That means, it will neither pollute the water nor the soil. The insulation membrane materials made out of bitumen, there is an end point in its life cycle and they can only be destroyed by burning