Epoxy is a good example Or rubber. Basically any plastic that transforms with heat, and cant be transformed back.
Thermosetting plastic or epoxy is a compond that when heated will cure and maintain it's shape even when heated again. Usually the compaound has to be mixed with hardeners and fillers then heated. Once cooled they will remain hard even if re-heated.
Examples of thermoplastics are-
Examples of thermosetting plastics are-
Acrylic is a thermoplastic and is used to make baths.
The plastic containers that are used for keeping food, plastic Christmas decorations, hard plastic pens.
Epoxy resins (when cured) are thermoset. Polyesters used in car-body fillers are also. Polyurethanes and alkyd resins are also thermoset.
cooking equiptment, carparts, plastic bags, erasers.
melamine resin, duroplast, bakelite, epoxy resin, PMMA.
polyester
expoxies
:)
the structure of thermosetting plastics are Ø Thermoplastics have long chains which are tangled together in no formal pattern Ø They have very few cross links which means that when heated they become soft allowing them to bent, pressed and formed into different shapes. Ø They become stiff as they cool
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.
teezak
thermosetting plastics would be used for recyclable things such as cans and plastics as they can be cleaned and re-moulded. These are used in times like today when global warming is affecting people and animals more than we think
As you stated, plastics are polymers, meaning they are made up of several smaller units called monomers. An example of this is a common material known as PVC. This stands for polyvinyl chloride, which is a polymer of vinyl chloride. Likewise, polysaccharides are also polymers, made up of smaller units, again called monomers. An example of this is a carbohydrate, which is made up of smaller sugars, such as glucose. So the difference between plastics and polysaccharides is that they are made up of different monomers. For plastics the monomer is an organic molecule, and for polysaccharides the monomer is a single saccharide, also known as a simple sugar.
Many things are made out of "Non Thermoplastics", which are called Thermosetting Polymers. Basically there are two kinds of Plastics: Thermoplastic, which are heated and injected under pressure into molds to create new items. These are plastics that get soft when heated. And Thermosetting Polymers that are resins that are either combined with a substrate or used alone, then poured into a mold, then subjected to heat and pressure to create items or sheets. These are plastics that get hard when heated. Things that are made from Thermosetting Polymers (Non thermoplastic): sheets of fiberglass and phenolic out of which circuit board found in computers are made from, knobs, wheels, etc.
Thermoplastics can be reheated and reshaped, however Thermosetting plastics undergo a chemical change resulting in them becoming permanently rigid, i.e they cannot be reheated and reshaped.
Examples of thermosetting plastics (or just thermosets) include amino, epoxy, and phenolic and unsaturated polyesters.
it is made from things that u can use
the structure of thermosetting plastics are Ø Thermoplastics have long chains which are tangled together in no formal pattern Ø They have very few cross links which means that when heated they become soft allowing them to bent, pressed and formed into different shapes. Ø They become stiff as they cool
There are two types of plastics: thermoplastics and thermosetting polymers. Thermoplastics are the plastics that don't undergo chemical change in their composition when heated and can be moulded again and again; examples are polyethylene, polystyrene, polyvinyl chloride and polytetrafluoroethylene (PTFE).[3] Thermosets can melt and take shape once; after they have solidified, they stay solid.
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.
Thermosetting plastics are a type of plastic made of long, cross-linked molecule chains. Their structures are very rigid. Thermosetting plastics can be moulded and shaped when heated, yet they cannot be heated again after they set.
The most familiar use of thermosetting plastic is the heat-resistant handle on metal cookware. It is also used for bottle caps, knobs and handles, and laminated counter tops. Thermosetting plastics retain their shape and strength even when heated.
teezak
Plastics made from oil.
Better known as thermoplastic, its' plastic which goes soft when it's hot, and hard at normal temperature. most plastics around us are thermoplastics. you can heat them, up, change their shape, then let them cool down as many times as you want. thermosetting plastics on the other hand, start out as a resin, which you can heat up or melt then make into the desired shape, after that though, they can't be reshaped like thermoplastics can.