bakelite is a thermoplastic or thermosetting plastic

Thermosetting plastics have a relatively higher melting points and tensile strength. The fabrication process for thermoplastic and thermoset start outs with the same raw materials, such as ethylene and propylene, made from crude oil. Thermoplastic is soft, weak and less brittle. Thermoplastics have low melting points and low tensile strength. Thermoplastic is a form of a polymer which will likely be merely melted by providing heat in an effort to recycle the material. Few examples of thermosetting plastics are phenolic resins, epoxy resins, amino resins, melamine, Bakelite. Hope this article is helpful to you. Such a material is also known as a thermoset or thermosetting polymer. softening and hardening can be repeated again and again. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. 1 answer. Thermosetting plastics have an excellent aesthetic appearance. Thermoplastics are solvent in organic compounds. Phenolic(Bakelite) Vinyl Ester Resin; Cyanate Ester; Poly Ester; This is the complete explanation with its top 10 properties. Thermoplastics vs Thermosetting Plastics. Q:-Give simple chemical tests to distinguish between the following pairs of compounds. Some are 'thermoplastic', which means that, like candlewax, they melt when heated and can then be reshaped. Such plastics are called thermosetting plastic. Choose the thermoplastics and thermosetting plastics from the following: Melamine, Polythene, Bakelite, Polyvinyl chloride synthetic fibers and plastics class-8 Thermoplastic is lower in molecular weight, compared to thermosetting plastic. Initially, the polymer is a liquid or soft solid. Bakelite is a) thermoplastic b) ployester c) thermosetting plastic d) Nylon 2. Bakelite Phenolic is produced in dozens of commercial grades to meet mechanical, electrical and thermal requirements. Thermoset vs thermoplastic, and Bakelite. This reflects the fact that above Tg they may be shaped or pressed into molds, spun or cast from melts or dissolved in suitable solvents for later fashioning. 4. Thermosetting vs. Thermoplastic Polymers Last updated; Save as PDF Page ID 5435; Contributors; Most of the polymers described above are classified as thermoplastic. ... Related questions 0 votes. What is the difference between thermoplastic and thermosetting plastics? Bakelite is a thermosetting polymer i.e. Hope this article is helpful to you. (a) Thermoplastic (b) PET (c) 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. In option A, it is given that bakelite is a thermoplastic. It is insolvent. Now, let’s discuss the Processing of Plastics. Thermoplastic polymer chains are free to move past each other and separate when subjected to heat (melt), chemicals (dissolve) or load (cold flow or creep). The primary difference between the two is that a thermoset is a material that becomes strong when heated, but cannot be regenerated or heated after initial formation, while thermoplastics are not necessarily … PVC (polyvinyl chloride) is a thermoplastic and is used for making toys, chappals, etc. | EduRev Class 8 Question is disucussed on EduRev Study Group by 118 Class 8 Students. Bakelite and melamine are examples of thermosetting plastic. Others are 'thermosetting': like eggs, they cannot revert to their original viscous state, and their shape is thus fixed for ever Bakelite had the distinction of being the first totally synthetic thermosetting plastic. Bakelite: Used to make plastic ware, vehicle disc brake cylinders, plugs and sockets, ... Thermosetting plastics have a relatively higher molecular weight when compared to thermoplastics. Polymers can be separated into plastics and rubbers. Melamine is not thermoplastics, it is thermosetting plastic. Thermoplastic properties: When you heat thermoplastics … Bakelite and melamine are examples of thermosetting plastic. Question 5. Which of the following characteristics does not affect the properties of plastics? Bakelite is a thermosetting plastic. When heat and pressure are applied to the layers, a chemical reaction (polymerization) transforms the layers into a high-pressure thermosetting industrial laminated plastic. Basically there are two types of thermoplastic, thermoset and thermoform. Question 4. The polymerization process creates the polymers used for making plastics. Curing is induced by heat or suitable radiation and may be promoted by high pressure, or mixing with a catalyst.Heat is not necessarily to be applied externally. 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