What is the preparation of Bakelite?
What is the preparation of Bakelite?
Molded Bakelite forms in a condensation reaction of phenol and formaldehyde, with wood flour or asbestos fiber as a filler, under high pressure and heat in a time frame of a few minutes of curing. The result is a hard plastic material.
How is Bakelite prepared give its uses?
It is a thermosetting phenol-formaldehyde resin formed by the condensation reaction of phenol with formaldehyde. Bakelite requires two monomers- phenol and formaldehyde. Different substitutes of phenol and formaldehyde can also be used depending on the application.
Is used in preparation of Bakelite?
The preparation of bakelite involves several steps, as illustrated below. Initial methods of preparing bakelite involved the heating of formaldehyde and phenol in the presence of one of the following catalysts -zinc chloride (ZnCl2), hydrochloric acid (HCl), or ammonia (NH3).
What are the two uses of Bakelite?
USES OF BAKELITE:
- Bakelite due to its high resistance to electricity and heat is used in automotive components and industrial applications.
- Due to its excellent insulating properties it is used for making switches and other electrical appliances.
- It is also used to make various kitchenware products like frying pans etc.
Is Bakelite used today?
But Bakelite is still being made, for wide-ranging applications. Bakelite still has some of its classic applications in automotive and electrical products. But the material also is used in space shuttles, Harp said.
What are the two uses of PVC?
Uses of PVC (Polyvinyl chloride):
- It is used for making bottles.
- It is used for making material for pipes.
- It is used for making handbags.
- It is used for making electric cable insulation.
- It is used for making high-quality furniture.
- It is used for making ropes.
- It is used for making toys.
How is Bakelite prepared in a laboratory project?
Preparation of polymers, namely Bakelite is a simple laboratory procedure. This project requires some amount of precaution but the outcome is rewarding.A polymer is a macromolecule composed of repeating structural units connected by covalent bonds.
Who was the first person to make Bakelite?
The first synthetic polymer, a phenol-formaldehyde polymer, was introduced under the name “Bakelite Bakelite was originally used to make billiard balls. Bakelite is a thermosetting phenol formaldehyde resin, developed in 1907–1909 by Belgian chemist Dr. Leo Baekeland.
How is Bakelite prepared as a condensation polymer?
So, we can, in general, say that Bakelite is a condensation polymer or a phenolic resin. Before we move on to the preparation of Bakelite, it is important to know how a polymer is prepared. Polymers are formed by combining ‘monomer’ or single units using a range of reaction mechanisms.
How to describe the structure of Bakelite monomers?
Bakelite: Structure and Uses 1 Preparation of Bakelite. When the phenol is taken in excess and the reaction medium is made acidic, the product of the condensation reaction obtained is acidic. 2 Bakelite Structure. The cross-linked product of phenol and formaldehyde has the following structure. 3 Uses of Bakelite.