Categories of Plastics

Objectives: To understand the , types, properties and applications of the material

​Types of Plastics

​PLASTIC

​Plastics can be divided by thermal reaction into two groups

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1. Thermoplastics

2. Thermoset Plastic​

Production Systems

Cannot be reshaped or recycled

Breaks at high temperature

Set by heat or pressure​

​Thermoset Plastics

Can be reshaped or recycled

Impact Resistant

Resistant to chemical​

​Thermoplastics

​PLASTICS

Types of plastics​

​PLASTICS

Types of plastics​

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• Duroplast

• Epoxy resin

• Fiberglass

• Polyester resin

• Polyurethane

• Silicone resin

• Vulcanized rubber

​PLASTICS

Types of plastics​

​

• acrylic

• polyester

• polypropylene

• polystyrene

• nylon

• Teflon

Multiple Choice

Which type of plastic can not be reshaped?

• thermoset Plastics

• thermoplastics

• super plastics

Multiple Choice

What are plastics classified by?

• thermal reaction

• toughness

• color

• stength

Multiple Choice

Which is not true about thermoset plastics?

• impact resistant

• Has only one type

• Chemical Resistant

• Flexible

*Rubber comes from trees and is obtained as latex

​​*By adding sulfur ​and heating to 280 degree F it can become more elastic, rigid and insoluble.

This is called Vulcanization or Vulcanized​

​Example: Rubber

Plastics can be made from natural materials and then processed to give it additional properties​

This now is called synthetic (not natural)​

​Natural & Synthetic

Multiple Choice

. 

Natural rubber comes from _____

• trees

• chemicals

• mines

• Factory

Multiple Choice

What is added to rubber to make it more elastic and rigid?

• sulfur

• nylon

• iron

• calcium

Multiple Choice

what process is done to both natural and synthetic rubber to make it better for use?

• melting

• vulcanization

• broiling

• properties

Pease answer the following questions in your own words:

1. What are some of the different types of plastics?​

2. What makes each type different from the other?

3. Is any type of plastic better than another?

Objectives

​

By the end of this topic students should be able to identify the different types of plastic and determine what can be recycled

​

​Types of Plastic

Types of plastics​

​Guiding Questions

​Types of Plastic

Types of plastics​

​Watch
the Video

WHAT NUMBERS OF
PLASTICS ARE RECYCLABLE

A plastic is a kind of material that is man-made and can be formed into almost any shape. Most plastics are strong, long-lasting, and lightweight making them durable and inexpensive.

​

There are about 50 main types of plastic which can be used for many things. Manufacturers often use plastics in place of more expensive materials. In nylon stockings, for example, plastic takes the place of silk. In vinyl house siding, plastic takes the place of wood. In many automobile body parts, plastic takes the place of metal

Types of plastics​

​What is Plastic?

Types of plastics​

Multiple Choice

Fill in the blank for this sentence

Synthetic Plastic is ____________

• Naturally made

• Made by man

Multiple Choice

Select the one which is Polyethylene Terephthalate (PETE or PET)

Multiple Choice

Select the one which is High Density Polyethylene

Multiple Choice

Select the one which is Polyvinyl Chloride

Multiple Choice

Select the one which is Low Density Polyethylene (LDPE)

• Made by man

Multiple Choice

Select the one which is Polypropylene (PP)

• Made by man

Multiple Choice

. 

Select the one which is Polystyrene (PS)

Multiple Select

Choose ALL of the ones that are DIFFICULT to recycle.

Multiple Select

Choose ALL of the ones that can SOMETIMES or OCCASIONALLY be recycled.

Multiple Select

Choose ALL of the ones that can be EASILY recycled.