The name “plastic” refers to the property of plasticity, which is the ability to deform without breaking . Plastic is any synthetic or semi-synthetic organic polymer. In other words, while other elements may be present, plastics always include carbon and hydrogen.
What are the different types of plastics and their properties?
- 1 – Polyethylene Terephthalate (PET or PETE or Polyester) ...
- 2 – High-Density Polyethylene (HDPE) ...
- 3 – Polyvinyl Chloride (PVC) ...
- 4 – Low-Density Polyethylene (LDPE) ...
- 5 – Polypropylene (PP) ...
- 6 – Polystyrene (PS) ...
- 7 – Other.
What are the characteristics of plastics?
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, good durability, low cost, are easy to manufacture, resistant to water and have low toxicity.
How do you identify different types of plastic?
One of the simplest ways to carry out a flame test is by cutting a sample from the plastic and igniting it in a fume cupboard . The colour of flame, scent and characteristics of burning can give an indication of the type of plastic: Polyethylene (PE) – Drips, smells like candlewax.
What plastic characteristics does plastic have?
Plastics are generally low cost, easy to manufacture, durable, strong for their weight , electrically and thermally insulative, and resistant to shock, corrosion, chemicals, and water.
What are the characteristics of plastic Class 8?
- Plastic is a poor conductor of heat and electricity.
- Plastic does not react with air and water and with many of the chemicals.
- Plastics are light weight, durable, cheap and very strong.
- Plastics are non- biodegradable substances. ...
- Plastic does not rust.
Why do plastics have different properties?
Because of the structure of the molecules , polymeric materials have different properties compared to other materials, like metals. Specifically, the relatively high molecular weight and long polymer chain length result in entanglement, and the lack of covalent intermolecular bonds facilitates polymer chain mobility.
What are the different uses of plastic?
Plastic is used across almost every sector, including to produce packaging , in building and construction, in textiles, consumer products, transportation, electrical and electronics and industrial machinery.
What are two different types of plastics?
There are two main types of plastics: thermoplastics and thermosets .
How can you tell the quality of plastic?
- Plastic Resin Variety. Assuring the quality of raw plastics and its integrity within a plastic product requires extensive evaluation and inspection methods. ...
- Raw Material Inspection. ...
- Ultrasonic Inspection. ...
- Radiographic Testing. ...
- Acoustic Inspection.
What is the difference between PP and PE?
Polyethylene (PE) is tough yet light, with good resistance to impacts and abrasions. On the other hand, Polypropylene is harder and can be used for mechanical and structural applications. ... Polypropylene is stiffer and more chemical-resistant and scratch-resistant, while still being very tough.
What is PP and PE plastic?
Polyethylene is a polymer made of ethylene, and depending on how it polymerises, the properties of polyethylene change. Polypropylene , however, is classified as number 5 – PP. It is also a plastic polymer, but its monomer is propylene, which is easily produced and has a high degree of purity.
What characteristic is not a characteristic of plastic?
The answer is 2. Plastic is a non-metallic, meaning it is not a very good conductor of heat or electricity .
Which is not characteristics of plastic?
Plastics are insoluble in water . Plastics are non-inflammable.
Which of the following characteristics has made plastic so useful?
Light, strong and durable .
What are the differences between thermoplastic and thermosetting plastic?
| Thermoplastic plastics Thermosetting plastics | 1. Thermoplastic can be easily bent. 1. Thermosetting plastics cannot be easily bent. If forced to bend, they will break. | 2. Softens on heating 2. Do not soften on heating | 3. Can be moulded and reshaped 3. Cannot be moulded and reshaped. | 4. Expensive 4. Cheaper |
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