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Why do you need preheating of plastic materials and explain the different methods of preheating?
Preheating is necessary for those plastics who are hygroscopic in nature. Mostly all engineering plastics are need to be preheated before processing. If we do not preheat the material than the present moisture in plastics material will react with molten plastic during processing and will cause breakage of polymer chain and results the poor visual appearence (Silver Streaks) & lower mechanical properties of the molded component.
Plastics can be preheated thro Hot air oven or Material hopper dryer. And the preheat tempreature may very plastics to plastics. Answer By: Sachin Porwal, Follow me on Twitter: @sachinporwal
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Can materials in a simple mixture be separated or combined because they have different properties?
They can be separated
What are ways by which combining materials are achieved?
Combining materials can be achieved through various methods such as adhesive bonding (gluing), welding (fusion of materials), mechanical fastening (screws, nuts, bolts), soldering (melting a filler material to join surfaces), and brazing (similar to soldering but at higher temperatures). Each method is suited to different types of materials and applications.
How is gold separated from other materials found with it?
Gold can be separated from other materials using different methods such as gravity separation, flotation, or leaching. These methods take advantage of differences in physical and chemical properties between gold and other materials to extract the gold from the ore. Magnetic separation can also be used to separate gold from magnetic materials.
How is silicon separated from other materials found with it?
Silicon is typically separated from other materials by several methods including chemical processes such as acid leaching, precipitation, and electrolysis. These methods utilize the differences in chemical properties and solubility of silicon compared to other materials found with it, allowing for the effective separation of silicon.
How is boron seperated from other materials found with it?
Boron is separated from other materials through hydrometallurgical processes, such as solvent extraction or ion exchange. These methods involve selectively precipitating boron as its hydroxide or reacting it with specific reagents to form a compound that can be easily isolated. Boron can also be separated using physical methods like distillation or fractional crystallization based on its different properties.
Explain in brief different collision resolution methods?
collision resolution methods
Explain three different methods in java?
There are three different methods /functions in java are there : 1)computational methods.2)manipulative methods.3)procedural methods.
Different parameter passing methods with examples?
explain parameter passing methods c program
How do you monitor children and young people's development using different methods?
Explain how to monitor children and young people's development using different methods.
Explain the rules regarding ascertainment of price in a contract of sale?
Explain the Various Methods of Costing. Ans. The methods of costingrefer to the techniques and processes employed in the ascertainment of costs. Different ...
Define cost explain different costing methods and techniques?
It is important to have your costs and costing methods in order. This will ensure that your money is being well spent.
What are the different business basic resources?
man money machines materials methods -daniecka_camille@yahoo.com
What are different scientific methods and explain?
observation hypothesis experiments result further hypothesis further experiments results and theory
Explain different ways of evaluating work methods against a range of technical criteria and relevant project criteria?
[object Object]
Methods of management information system and their explain?
methods of management information system
What are the skills required by executive also explain the methods of developing such skills?
What are the skills required by executives? Also explain the methods of developing such skills.
What is a cost concept?
Explain methods of costing
