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Most plastics come from hydrocarbon monomers - hydrogen and carbon. Occasionally another element, such as Fluorine, is added to make a different plastic. These monomer molecules are forced to join under heat and pressure (sometimes with a catalyst) to form a polymer.
Another group use Silicon rather than carbon. These form the silicone plastics.
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What type of plastic does not melt?
Thermosetting plastics, such as epoxy resin or phenolic resin, do not melt when heated. Instead, they undergo a chemical change and become hard and infusible.
Which material left over from oil refining can be used to make plastics?
One material left over from oil refining that can be used to make plastics is naphtha. Naphtha is a feedstock commonly used in the production of various plastic resins, such as polyethylene and polypropylene. It is a type of light hydrocarbon obtained from the refining process and serves as a raw material for the petrochemical industry.
After two half-lives, how much of the original material has decayed?
After two half-lives, 75% of the original material has decayed.
What are the methods of preparation of Thermoplastics and Thermoset plastics?
Thermoplastics are prepared by melting and molding them into shape, while thermoset plastics are prepared by heating a liquid resin until it undergoes a chemical reaction, forming a hard and rigid material. This reaction cannot be reversed, making thermoset plastics unable to be re-melted or reshaped like thermoplastics.
What plastics cannot absorb heat?
Plastics that have low thermal conductivity, such as polyethylene and polypropylene, have limited ability to absorb heat. These plastics are insulating materials and do not readily transfer heat through their structure. Additionally, plastics with lighter colors tend to absorb less heat compared to darker colored plastics.
What material is replacing metal?
plastics
Ping pong material?
plastics, rubber
What are the main material that can be recycle?
Paper, Plastics and Metals are the main material that can be recycled.
What is done to the plastics material in the plastic factory?
what is done to plastic material in the plastic factory
What is the difference between plastics and elastomers?
The difference between plastics and elastomers is actually quite simple. Plastics are made from oil and elastomers are made from synthetic material.
What has the author John Steve Summersett written?
John Steve Summersett has written: 'The present status of plastics as an engineering material' -- subject(s): Plastics, Plastics in building
What material is acrylic cement used to join?
acrilic plastics.
What don't melt?
Thermosetting plastics. Once cooled and hardened, these plastics retain their shapes and cannot return to their original form. Thermosetting plastics dont melt (i think) :)
What material beginning with the letter P can be moulded into usefull shapes?
Plastics
What materials do you need to make it bounce?
To make a material bounce, you would typically need a material with elasticity and resilience. Rubber, for example, is a common material used for bouncing due to its ability to deform and then return to its original shape. Other materials with similar properties, such as certain plastics or foam, can also be used for bouncing.
Where are plastics naturally found?
Plastic is a synthetic material. It is not found naturally anywhere.
What material does super glue work best on?
Solid, shiny plastics and metals.
