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Because of cross linking in the chains. This happens when heat is applied to the plastic. Once this has taken place thermoset plastics can not change shape or change to a thermosoft plastic.
Wiki User
∙ 13y ago
Thermoset plastics cannot change shape because they undergo a irreversible chemical reaction during the curing process. This reaction, known as crosslinking, creates strong bonds between the polymer chains, making the material rigid and inflexible. Once set, thermoset plastics cannot be melted or reshaped like thermoplastics.
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What is Thermoset Plastic 18 percent Glass?
It is a plastic that cant be heted again after is been heated and been put in a shape.
How you prevent or control physical weathering of rock?
it cant be preventeed LOOLL
Why liquids have no definite shape?
Liquids can easily change there shape because molecules are loosely bound to each other. in case of Solids, molecules are so tightly bound that you cant change it shape until you hit it with something. in case of Gases, you can say that molecules are almost free.
Example of things made out of thermosetting plastics?
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.
Which of the cells has fixed shape?
Cells with a cell wall.Because cell wall stiff shape cant be changed.
What is Thermoset Plastic 18 percent Glass?
It is a plastic that cant be heted again after is been heated and been put in a shape.
What plastics are thermosetting plastics?
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.
How do you change the shape of the sound bubble on the sound recorder on your dsi?
you cant
Why do thermosoftening plastics soften when heated?
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.
If the mass of an object cant be changed how do you increase the displacement of water?
change the density by altering the shape.
What is thermosettings?
Thermosetting is a plastic that dosent have elastic memory!!!
How you prevent or control physical weathering of rock?
it cant be preventeed LOOLL
Why liquids have no definite shape?
Liquids can easily change there shape because molecules are loosely bound to each other. in case of Solids, molecules are so tightly bound that you cant change it shape until you hit it with something. in case of Gases, you can say that molecules are almost free.
How do you shape your muscle?
You cant!
Example of things made out of thermosetting plastics?
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.
How do you shape shift in Clubpenguin?
You cant shape shift in clubpenguin.
How do you change the weather?
You cant, weather is natural so you cant change it
