properties of plastic that make them so useful

Plastics are classified into two categories according to what happens to them when they're heated to high temperatures. Thermoplastics keep their plastic properties: They melt when heated, then harden again when cooled. Thermosets, on the other hand, are permanently "set" once they're initially formed 

Polymers can be classified in ways that reflect their chemical makeup, or perhaps more importantly, their properties and applications. . But most of these monomeric molecules are perfectly stable as they are, so chemists have devised two general methods to make them react with each other, building up 

So the word plastic is a way to refer to synthetic materials capable of entering into a plastic state, but plastic is not necessarily the group of materials to which this word refers daily. The properties and characteristics of most plastics (though not always fulfilled in certain special plastics) are these: * Easy to work and shape,.

useful? Some plastics are waterproof and resistant to attack by chemicals. Think of ways in which these properties are useful to us. Industries, especially the hi-tech ones Make a list of the advantages of both paper and plastic bags for holding fruit and vegetables. Compare the masses of plastic and paper bags which are.

Plastics are non-reactive and hence they are useful in storing chemicals and their property of being non-reactive makes them non-biodegradable in nature.

The characteristics that make polymers so attractive and useful, lightweight and almost limitless physical forms of many polymers designed to deliver specific appearance and functionality, make post-consumer recycling challenging. When enough used plastic items can be gathered together, companies develop technology 

As plastic technology advances, many car companies envision using more plastic to lighten the weight of cars and trucks to make them more fuel-efficient. The Uses and Applications of Plastics: How plastic's properties make it an ideal material for packaging, building, aerospace technology, electronics, agriculture, and 

Properties of Plastic. Plastics have numerous properties that make them superior to other materials in many applications. Plastics generally have: resistance to corrosion and chemicals, low electrical and thermal conductivity, high strength-to-weight ratio, colors available in a wide variety and transparent, resistance to shock, 

Today it is one of our most useful and adaptable materials. There are hundreds of different kinds of plastics, in all sorts of different colours, and with all sorts of different properties, from strong and hard to soft and flexible. Most plastics melt when they are heated, so they are easy to mould into any shape. This makes them 

There are various properties of plastics as a construction material which makes it useful buildings and other construction works. Plastics are Each plastic material has its own peculiar properties to suit its particular uses. So, corrosive metals are replaced by plastic in the case of water carrying pipes, etc.

Automatic sorting techniques have been developed that depend on various physical, optical, or electronic properties of plastics for identification. Such methods prove difficult because of the variety of sizes, shapes, and colors of plastic objects that are encountered. Although in principle it is possible to create devices that can 

Materials have different properties that make them useful for different jobs. This section includes: Material properties · Metals · Plastics · Glass · Wood · Fabrics. Page: 1; 2 · 3 · 4 · 5 · 6 · 7. Previous. Next. More from Material properties: Play Quiz. More BBC Links. Teachers. Lesson plans and more to help with KS2 teaching.

One of the many properties of plastics that makes them so useful is that they are easy to produce in different shapes and sizes and so can be used to make a huge variety of objects. This worksheet will help you test your knowledge of one of the most useful materials ever made. What are plastics made from? Plants. Rocks.

Photo: Materials science on the move: "smart" cars are built from various different composite materials and plastics, making them lighter and more energy Plastics don't have free electrons to conduct heat so they don't draw heat from your body as efficiently; that's why a piece of plastic feels warmer than a 

There are so many different types of plastic material, and a lot of them, like polyethylene , PVC, acrylic, etc., have incredibly useful and versatile properties. You would It can be used to create rigid, lightweight sheets, like Foamex, but it can also be used to make faux-leather materials like leatherette and pleather. Common 

Thermosetting plastics never soften again no matter how many times they are heated and this makes them particularly suitable for objects that need to Some of these provide color or texture, while others give the plastic particular physical properties, such as fire-resistance, slight electrical conductivity (to