JSS2 Basic Technology Lesson Note on Clay; Ceramics and Glass

The website has the complete lesson note for all the subjects in secondary school but this piece showcases the JSS2 Basic Technology Lesson Note on Clay; Ceramics and Glass. You can use the website search button to filter out the subject of interest to you.

CLICK HERE to download the complete Document: DOWNLOAD HERE

TOPIC: CLAY, CERAMICS, AND GLASS.

 Production of non-metallic materials

Processing of ceramics:

In the processing of ceramic materials, mud and clay are obtained and cleared of all the impurities. Afterwards, the materials are mixed with water thoroughly pounded until a smooth, even mixture is obtained. The next process is shaping of the mixture into the desired objects. The art of making moist clay materials into various objects is called pottery. There are two methods by which ceramic materials can be processed.

1. The pinch method
2. The potter’s wheel method.

The Pinch method: This is the traditional method of using fingers to carefully mould and shape objects.

The Potter’s wheel method: This is the method with a rotating disc upon which the clay is mould.

There are 4 stages involved in the production of ceramics:

1. Molding
2. Shaping
3. Decorating.
4. Firing.

In pottery the following are involved:

1. Mixing
2. Shaping
3. Drying, and

Processing of Glass

The mineral glass belongs to the group of ceramics materials; it is made from inorganic resin made from refining petroleum products. Most glasses in use are the inorganic type. Basically, inorganic glass is produced by melting together various proportions of silica, lime-stone, dolomite by firing them in a furnace. The molten substance is allowed to cool slowly through the process called Annealing.

Sub-Topic 2:             Plastics and rubber

1. Examples of plastics and rubber products.
2. Methods of processing plastics and rubber.

EXAMPLES OF POLYMER PRODUCTS

S/N	PLASTIC PRODUCTS	RUBBER PRODUCTS
1	Cloth (polyesters)	Tubes and tyres
2	Kitchen Utensils	Gloves
3	Cups, plates and spoons	Boots and raincoats (as well as shoes)
4	Furniture	Balloons and toys
5	Pipes, tubes and accessories for building construction	Adhesive products
6	Bowls, storage drums and containers	Automotive industry products (e.g. hoses, bumpers, dampers, anti-vibration mounts, fan belts, gaskets, etc.)
7	Syringes, and other medical supplies and components	Other personal care products (rubber band, pencils, erasers, hot water bottles)

Click on the Downloadable Button to get the FULL NOTE