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:
explain in detail the construction and working of a scientillation counter
The Bubble''s shape is spherical so as to reduce the surface tension. With the given volume of liquid,Spherical surface only fits i minimizing the surface tension to a greater exte
Q. Hoop, Disk, Cylinder and Sphere A disk, a hoop a cylinder and a sphere have the same mass and the same diameter. Every is rolled toward a ramp with the same initial velocity
Are made up of alloys (manganin, constantan or nichrome) these materials have moderate Resistivity which is practically independent of temperature so that the specified value of re
Q. Find the minimum wavelength of X-rays produced by an X-ray tube operating at 1000 kV. λmin = 12400 A 0 / V Therefore λmin = 12400 X 10 -10 / 10 6 = 0.0124 A 0
Explain the Kinetic Theory Kinetic theory looks at how each of these steps adds more internal kinetic energy (jiggle energy) to the material. A solid is a framework of atoms an
Postulates of Special Theory of Relativity - 1. All law of physics having same form in all inertial frame of reference. 2. The speed of light in free space is constant, irres
mole; mol The basic SI unit of substance, explained as the amount of substance which contains as many elementary units (molecules, atoms ions, etc.) as there are atoms in 0.01
Coriolis pseudoforce (G. de Coriolis; 1835) A pseudoforce that arises due to motion relatively a frame which itself rotating relatively second, inertial frame. The magnitude o
In a non-uniform magnetic material, these substances move from stronger parts of the field to the weaker parts.why?
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