Quick Answer: Which Of The Following Is A Thermosetting Resins Mcq?

What type of polymer is PVC?

PVC, in full polyvinyl chloride, a synthetic resin made from the polymerization of vinyl chloride.

Second only to polyethylene among the plastics in production and consumption, PVC is used in an enormous range of domestic and industrial products, from raincoats and shower curtains to window frames and indoor plumbing..

Is a thermosetting plastic?

A thermosetting polymer, resin, or plastic, often called a thermoset, is a polymer that is irreversibly hardened by curing from a soft solid or viscous liquid prepolymer or resin. Curing is induced by heat or suitable radiation and may be promoted by high pressure, or mixing with a catalyst.

Which is a property of thermosetting plastics?

Thermosoftening (also called thermoplastics) are plastics which will soften when heated and can be reshaped. Thermosetting plastics are plastics do not soften on heating. They are used when resistance to heat is important (eg kettles, plugs, laptop chargers etc).

What is thermoplastic Mcq?

Explanation: Thermoplastics are plastic polymer substances formed by the addition polymerization process. … These plastics tend to become soft when heated and harden when cooled.

What are thermoplastic explain with example?

Thermoplastics are defined as polymers that can be melted and recast almost indefinitely. They are molten when heated and harden upon cooling. … Some of the most common types of thermoplastic are polypropylene, polyethylene, polyvinylchloride, polystyrene, polyethylenetheraphthalate and polycarbonate.

Which is not a thermosetting polymer?

Bakelite, a phenol formaldehyde resin used in electrical insulators and plasticware. Duroplast, light but strong material, similar to bakelite used for making car parts.

Which of the following is thermoplastic polymer?

A thermoplastic is a polymer that becomes pliable or moldable above a specific temperature and returns to a solid state upon cooling. These are the linear or slightly branched long chain molecules. For examples, PVC, polystyrene, nylon,polyethylene etc.

What is classified as thermosetting polymer?

Some other examples of thermoset plastic polymers include silicones, vulcanized rubber, epoxies, polyesters and phenolics.

Is an example of thermoplastic?

Examples of thermoplastic materials are polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyamides, polyesters, and polyurethanes. High-temperature thermoplastics include polyetherether ketones, liquid crystalline polymers, polysulfones, and polyphenylene sulfide.

Which is the thermoplastic material?

A thermoplastic, or thermosoftening plastic, is a plastic polymer material that becomes pliable or moldable at a certain elevated temperature and solidifies upon cooling. … Thermoplastics differ from thermosetting polymers (or “thermosets”), which form irreversible chemical bonds during the curing process.

Which is a thermosetting plastic Mcq?

Explanation: Polyester is a thermosetting plastic formed by a reaction of dibasic acids and polyhydric alcohols. They are typically used in safety helmets, machine covers, electrical moldings etc. Explanation: Elastomers are a group of natural and synthetic polymers which have properties similar to that of rubber.

What are the example of thermosetting plastic?

Common examples of thermoset plastics and polymers include epoxy, silicone, polyurethane and phenolic. In addition, some materials such as polyester can occur in both thermoplastic and thermoset versions.

Which of the following is an example of thermoplastic polymer?

Examples of thermoplastics include polyethylene, polypropylene, polyvinyl chloride, polystyrene, polybenzimidazole, acrylic, nylon, and Teflon. Thermo-softening plastic, or thermoplastic, at some temperatures becomes soft and flexible, and solidifies when cooled.

Is Pan a thermosetting plastic?

Handles of frying pans and knobs of pot lids are made of thermosetting resins.

What are thermosetting plastics give at least 2 examples?

3.2. 2 Thermosetting Plastic Examples:Epoxy Resin.Phenolic(Bakelite)Vinyl Ester Resin.Cyanate Ester.Poly Ester.

What are thermoplastics give two examples?

Other examples of thermoplastics are polypropylene, polystyrene, cellulose acetate, PTFE (Teflon), nylon, polyketone, etc. Polypropylene is also known as polypropene.

What happens when thermosetting polymers are heated?

In summary, thermo-softening plastics are soft and melt when heated, whereas thermosetting plastics are hard and do not soften or change their shape when heated.

Which is thermoplastic material answer?

A thermoplastic is a material, usually a plastic polymer, which becomes more soft when heated and hard when cooled. Thermoplastic materials can be cooled and heated several times without any change in their chemical or mechanical properties. … Thermoplastic can be moulded into any shape.

Which of the following is a thermosetting resins?

Thermosetting resins describe a generic family of products that includes unsaturated polyesters, vinyl esters, epoxy, and polyurethane resins. The materials used with them are generally described as hardeners, curing agents, peroxide initiators, isocyanates, fillers, and flexibilizers.

Which of the following is an example of thermoplastic Mcq?

Explanation: The examples of thermoplastic are nylon, polyester, PVC,PE, PP, PVA etc. 3. Polythene is prepared by the process of __________________ polymerisation of ethylene. Explanation: Polythene is prepared by the process of addition polymerisation of ethylene.

Is PVC a thermosetting polymer?

Plastics can be categorized as either thermosetting or thermoplastic. Polyvinyl chloride (PVC) is considered a thermoplastic. … In comparison, thermosetting polymers form irreversible chemical bonds as they are cured and therefore they break down when heated and will not re-form as the temperature is cooled.