Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Plastics are polymers, meaning they are made up of molecules from many different elements. By utilizing different combinations, new polymers are made that can be manipulated from many different things. Plastics are organic materials of higher molecular weight and are capable of being formed into a desired shape during or after their manufacture. However, organic materials may to be the sole constituents of plastics. The term plastic is used very frequently in common terminology even for materials which are not really plastics if viewed from the definition given above. Resin is the substitute world normally used in insulation technology in place of plastic. Plastics are synthetic resins obtained basically in two different ways, by linear polymerization and by poly condensation. The recurring chemical reaction by which molecules weight composition is called "POLYMERIZATION", and the linear polymerization is a reaction is chemical in which high molecular compound is obtained from a lower molecular compound. Without evolution of a by product in linear polymerization several monomers are linked to one another and form a single polymer molecule. These molecules are relatively easy to recycle. The polymers achieved through linear polymerization are known as "Thermoplastics". Thermoplastics can be melted and reformed any number of times. Thus they are relatively easy to recycle. When the reacting molecules combine in such a way that there is evolution of a by product of the molecular weight, like water, the process is called 'Condensation Polymerization "and this irreversible chemical reaction between different low molecular compounds. There are two general types of the linear and the spatial condensation. Thermosetting plastics are melting on heating but are converted into a rigid solid mass if maintained at an elevated temperature long enough. They become unable to maintained melt after this and hence become insoluble in any solvent.
Spatial polymers are characterized by:
Linear polymers are characterized by:
An object that is 24 cm from a convex lens produces a real image that is 13 cm from the lens. What is the focal length of the lens?
how make a good project
What is a light Guide? While a number of single fibers are grouped together to create a larger diameter light conductor the resulting structure is termed as a light guide. Occa
Write an expression for the force experienced by a charged particle moving in a uniform magnetic field B. With the help of a diagram, define the principle and working of a, cyclotr
Conventional Current: Earlier scientists had no knowledge of the concept of electron, so the developed the convention, still in use, , that the direction of current is for appo
Applications of Rydberg constant in a detailed manner
Q. In Young's double slit experiment, the width of the fringe obtained with light of wavelength 60000A is 2 mm. Calculate the fringe width if the entire apparatus is immersed in a
Refractive Astronomical Telescope: It is an optical instrument which is used to see heavenly bodies such as stars, moon and planets is known as telescope. Astronomical teles
The physical value which does not depend on any other physical quantity is known as a fundamental physical quantity like length; mass and time are known as fundamental units.
Q The resistance of a platinum wire at 0 o C is 4 Ω. What will be the resistance at 100 o C, if the temperature coefficient of resistance is 0.0038/ o C. Resistance at 100 o
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd