What is polycarbonate plastic made of?
Depends, there are various types
All are joined by Carbon and Oxygen groups in the form -O-(C=)-0-
They can also contain Allyls or Bisphenol A
All are joined by Carbon and Oxygen groups in the form -O-(C=)-0-
They can also contain Allyls or Bisphenol A
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Most commonly plastic bags or made from polyethylene with different densities. An example would be, grocery store bags are made from high-density polyethylene (HDPE) and the shiny shopping mall bags are made of linear low-density polyethylene (LLDPED) Welll LLDPED is veryh technical more like i cb…a to work out what it is :D ( Full Answer )
Hubert A Myers of Toledo, Ohio has two patents on the kazoo from June 1928, and from January the following year. . Confection Muscial Toy: patent 1,759,953 . Musical Toy: patent 1,751,490
Will a piece of polycarbonate plastic survive a trip through the digestive system of a puppy and will it be destroyed or hurt the puppy?
Answer . it would most likely hurt the puppy. i would say to take the dog to the vet immediately before it gets worse.. Puppy might go kaboom!
Petroleum to Plastics The technological road from oil field to finished plastic product has numerous fascinating side trips. Here's the route taken in the petroleum-to-plastics process: 1. Petroleum is drilled and transported to a refinery. 2. Crude oil and natural gas are refined into ethane, …propane, hundreds of other petrochemical products and, of course, fuel for your car. 3. Ethane and propane are "cracked" into ethylene and propylene, using high-temperature furnaces. 4. Catalyst is combined with ethylene or propylene in a reactor, resulting in "fluff," a powdered material (polymer) resembling laundry detergent. 5. Fluff is combined with additives in a continuous blender. 6. Polymer is fed to an extruder where it is melted. 7. Melted plastic is cooled then fed to a pelletizer that cuts the product into small pellets. 8. Pellets are shipped to customers. 9. Customers manufacture plastic products by using processes such as extrusion, injection molding, blow molding, etc. . ( Full Answer )
plastic is made in factories and by a number of diffrent minerals and materials. plastic is one of the many things that takes a long time to decompose and some people say plastic can take ove 100 years to get rid of. and people think that plastic WILL be around in the future :) **I LOVE OSCAR**
Cheap bikes are made with cheap parts. Plastic pedals are cheap to make.. Better pedals are made out of metal.. (Worth noting: better bicycles don't come with pedals at all. This way the rider can get the pedal system that works for the rider.)
It varies with which plastic you're making, but most are made of petroleum and/or natural gas.
Plastics such as polyethylene (food containers) and polystyrene (general plastics and styrofoam) are made from fractions of crude oil (petroleum). Polycarbonate plastics are made indirectly through the production of phosgene and its use to make acetone and bisphenol-A.
Some materials plastic is made of is carbon containing compoundssuch as carbon atoms, oxygen, sulfur, and nitrogen. Oil is also amaterial of plastic.
There are almost countless numbers of things made from thermosetting plastics. Just a single example are the plastic forks, knives and spoons that we consider as "disposable" or "single use" utensils.
it can be made into water bottles a cd a cup nicklace any thing of corse
Thermosetting plastic has a liquid inside it that is fireproof. Thermosetting plastic can't be melted again.
Can you use Propylene Carbonate to test for internal stresses on the Polycarbonate plastic parts by dipping the part in Propylene Carbonate and look for cracks?
Yes. It is a very rigorous test. Immerse part for 3 minutes; then wash thoroughly in water. If there are no visible cracks then the part has minimal stress.. Poor mouldings will fail quickly eg less than 30 seconds.. To remove all stresses in the Polycarbonate part, heat in an oven for 15mins at 1…30 degrees C. These parts, once cooled, will pass the test.. Some Polycarbonate applications need 3minutes resistance; otheres may be acceptable at 1 minutes resistance. It depends on the part eg medical parts or parts that will be exposed to loads or chemicals need better resistance.. Alternative tests for Polycarbonate; by volume; these are less rigorous:. 15minutes immersion in 1:1 solution of n-proponal and ethyl acetate. 3mins immersion in 1:3 solution of toluene and n-propyl alcohol email@example.com ( Full Answer )
Poly is thinner, lighter, impact resistant, scratch resistant, and has UV protection "built in" to the lens. Plastic is slightly thicker than Poly, and I usually recommend adding a scratch coat (like TD2 or Crizal Alize) to help extend the life of the lenses. If you have a strong RX and want thi…n lenses, I would recommend going with a Hi-Index Plastic (1.60 or 1.67). It's still a type of plastic, and doesn't have all the great qualities of Poly but the Poly will distort your side vision and could cause you to feel cross-eyed or feel like your eyes are "pulling". It's best not to switch back and fourth between the two materials because your eyes will have to re-adapt each time to the different material. If you start in Poly and never had problems, stay with it for the rest of your "glasses wearing life" lol Same goes for Plastic... don't switch to poly... ~Megan S. Optician ( Full Answer )
A transparent ruler may be a polycarbonate. An opaque-type ruler may be a polystyrene copolymer such as high-impact polystyrene (HIPS). Recycled polystyrene can be turned into rulers, among other things.
No you are not made of plastic. You are made of bones, and skin. See What Are You Made Of for more information on this.
Plastic bags are usually made from high density polypropylene (HDPE, recycling number 2) or low density polypropylene (LDPE, recycling number 4).
Polycarbonate is a tough and versatile plastic used in bulletproofwindows, cellphone casings and eyeglasses. Dr. Hermann Schnelle ofBayer in Germany invented the polycarbonate resin in 1953, just aweek before Dr. Daniel Fox of General Electronics made the samediscovery. Lexan is the brand name of po…lycarbonate. ( Full Answer )
Plastic bottles may be molded from any of dozens, or even hundredsof common plastic resins. Most commonly, however, bottles forhealthcare and science are molded from polypropylene and drinkbottles are typically molded from PET.
It is not possible to make polycarbonate plastic without BPA. BPA is an essential building block of the polycarbonate plastic.
The material properties are suitable for the purpose,(color, shape, corrosion resistant....) and they're cheap to make.
With most dolls, the head and legs are soft vinyl and the torso and arms are hard plastic. However, many of the posable dolls have both arms and legs made of hard plastic since the elbows and knees are jointed.
Thats a tough one....well....the recorders were originally made from wood(like alot of instroments), they may not of sounded good when they made it medal. It could also be that the recorder isn't that hard to play so they didn't make it medal. I'm not sure, I'm just brainstorming, hope this helped!(…maybe nott) ( Full Answer )
The first and last answers simply are not correct, nor do theyanswer your question. The second, middle question is much better,but it does not fully answer your question either. If a metal pan with a plastic handle is put in the oven at, let'ssay, 350 deg., then the temperature of the entire pan, me…tal andplastic, will eventually reach 350 deg. It is not true that theplastic won't get hot, actually it should heat up faster than themetal. There are two properties in consideration: heat capacity andthermal conductivity. Metals in general have large heat capacities.One can think about the amount of heat a substance can store perunit mass, called the "Specific Heat," or one can consider theamount of heat a substance can store per unit volume. In the caseof a pan and handle, it makes more sense to look at the question interms of the heat stored per volume. Most people know from everyday experience that metals stayhot longer than non-metals like wood and plastic. That is becausemetals have a much larger heat capacity per volume than mostnon-metals; that is they hold more heat. What about thermal conductivity? In this case, we only need toconsider the thermal conductivity of air. Heat flows FROM a hotter object TO a cooler object. If a pan w/plastic handle is put in a 350 deg. oven and allowed to heat upcompletely, when it is taken out the oven the pan and handle are at350 deg. We only need to consider the heat transfer from the metalto the air and from the plastic to the air. Since the coolermaterial is the air, all that matters is the thermalconductivity of the air. You can look up thermalconductivities in a table, but air, and all gasses, have much lowerthermal conductivities than almost any solid, and it is certainlylower than the pan and Bakelite Â® (the pan's handle).Since the handle does not contain as much heat as the pan, it willcool down to a touchable temperature faster. The same applies if the pan is placed on a burner. The handle willtake longer to heat up than the metal because 1) the metal isdirectly over the flame, and 2) the metal has a higher thermalconductivity than the plastic meaning that a lot more of the heatfrom the burner will be absorbed by the metal. Answer The reason the pan Handle is made of plastic is because Plastic isnot a conductor of heat so it won't get hot. If the handle wasmetal it would get very hot because it is a conductor of heat. Answer Frying pans have plastic handles because plastic is a terribleconductor of heat that is coming from a stove. Therefore the handleis cool even when the metal of the frying pan is hot, when you needto lift it, or perhaps something else. Answer Safety. Plastic will not conduct either heat or electricity, so inorder you can safely handle pots and pans, plastic is used forthose reasons. Conductivity of air plays practically no role in this. If the panheats up air in contact, that air is immediately removed byconvection and replaced by cool air. ( Full Answer )
Some special horse shoes are made of plastic. Glue on shoes can be made of plastic. Also, special boots that take the place of a horse shoe are also made of plastic. . Plastic horseshoes would crack very easily, and are not as easily molded to a horses foot. Metal horseshoes are easier in gene…ral. ( Full Answer )
Concrete is a jillion time cheaper than plastics, and won't break down from the sun's rays, and is perfectly rigid.
because plastic melts on heating and metal doesnot melt on heating.metals are good conductors of heat..
plastic cups are 100% made of plastic and is made of polymer. polymer are substances containing a large number of structural units joined by the same type of linkage.
Polycarbonate is naturally transparent, with the ability to transmit light nearly that of glass. It has high strength, toughness, heat resistance, and excellent dimensional and colour stability. Flame retardants can be added to polycarbonate without significant loss of properties. It is used for the… casing to be able to hold the phone together. ( Full Answer )
To protect your phone from breaking, but obviously if you throw it off a cliff it will break and if you leave it in a pool of water it will break to because the water will slowly get through the gaps of plastic.
New technology was able to process starch into methylglucoside, a biodegradable plastic. This corn plastic breaks down after being buried in landfills for only seven months, while oilbased plastic never breaks down completely.
its suitable because its hard for the case to break and it holds the phone together allowing it to work
Many plastics bottle caps are made out of HDPE or PP. The material is heated and in most cases injection molded or compressed molded.
Lenses made from polycarbonate, the same type of plastic used for the space shuttle windshield, are about 50 times stronger than other lens materials.
some are. Those are usually the less expensive ones though. Better raincoats are made out of a mixture of plastic, rubber, and fabric. It just depends on what you're getting.
I'm pretty sure that there shipped off in a plane or a truck to stores and/or super markets. May I suggest the following. There's a place for plastic bags to go to after they are made; even before they are shipped to various places. That place could be the Packaging and Crating facility; then to …the Storage Warehouses; then the Shipping and Handling Warehouse where they meet up with transportation to the Users of plastic bags. I hope you are a responsible user of plastic bags. xodyac ( Full Answer )
Plastic tables are made using high-density polyethylene (HDPE). Besides being made fresh from raw material, it can also be made from used products such as plastic containers and even plastic bags that we throw away without the merest thought. Therefore bear this in mind: if we don't recycle, we'r…e simply throwing away our planet. ( Full Answer )
It's strong enough for the purpose, cheap to manufacture, fairly light and easy to design in selling colors and shapes.
Polycarbonate is used in a phone because it needs a hard texture of plastic to keep it protected incase it falls or smashes.
Petroleum actually, its one of the few substances that is totally immune to water, that's why plastic is so useful, but it also means that it doesn't break down easy, UV rays from the sun break it down slowly into very small bits floating around in the oceans.
Because when a company wants to sell something, they will always have competition with other companies selling the same product. To attract customers the company must lower their price, but if they reduce their price their profits will also be reduced. Hence, they must use a cheaper material to buil…d and that is often plastic. And also cos they are cheap bastards, if this was my worlds, everything would be made from carbon fibre and industrial diamond and polycarbonate..! =D ( Full Answer )
Not all of them are, But for those who are, plastic is a good choice. It's water proof, inexpensive and easy to work with.
There are many different types of electric guitars, and they are made with a variety of materials, including plastic.
No, butter is milk fat. It's made by agitating cream until the fat separates from the whey in the cream.
Well, plastic is made from used plastic bottles so I guess that they want to recycle.
Plastic is a bad conductor and a good insulator. When it is wrapped around wire(s) with an electric current flowing through them, it prevents the electricity from getting out and shock our skin (a good conductor of electricity), so plastic is all for safety.
Lego is made out of plastic for a variety of reasons. Here are some: 1. Plastic is cheap, and easy to mould. 2. Plastic is safe in the aspect that you can't get harmed by it (unless you eat it). 3. Plastic can be reused and is damage-proof.
The yield stress of any plastic is usually not use to describe the material because all plastics yielding stress is a function of the rate at which it is loaded and its temperature. For example if you leave something like silly putty on the corner of a table it will eventually creep over the edge of… the table under its own weight, but if you cool it down to can use it to hit nails into wood. Same thing applies to poly-carbonate and other plastics just to a lesser extent. Often the ultimate stress is used to determine if a plastic will fail but even that assumes that the plastic is a room temperature. ( Full Answer )
Usually polyethylene terephthalate, which has four advantages: it is easy to work with, it is very inexpensive, it is food safe and the companies that make it make a LOT of it, so you can get all you need.
Because it makes if it was still made of iron it would put thehouse under a lot of pressure because of how heavy it was that kindof weight would make the dink into the ground never to be seenagain