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!
Q. Write short notes on fabrication of rubber objects.
Sol. Fabrication of Rubber: in the row condition rubber is composed of molecules of great length and molecular weight. Although it is thermoplastic in this condition its plasticity can be improved by working or masticating the rubber in air at room temperature. This has the effect of partially oxidizing rubber resulting in fragmentation of the large molecules into more plastic but smaller ones. For various objects different process are used which are described below.
(1) Extrusion: the machine used for extrusion of rubber is sometimes called a tuber which is used for extruding continuous length of tread and side wall stock for tyres. The continuous strips are later cut into proper length to make tyre.
(2) Calendaring: the process is used for making continuous sheets of rubber or impregnating fabric with rubber. If the circum perennial speed of the rolls is faster than the speed of the cloth the process is called fractioning and rubber compound is wiped into the voids of the fabric.
(3) Moulding: moulding of rubber parts is accomplished mainly by compression moulding and transfer moulding.
(4) Dipping and Electrode position: both are used to produce shapes such as gloves face masks and balloons from latex. The same way as metals are deposited from solutions.sss
Why transition elements form interstitial compound
Define the term - Extrusion It is a metal working process that produces long lengths of uniform cross sectional area from a metal billet by causing the latter to flow under h
Classify phylum protozoa upto classes giving characters and suitable examples.
please give me a complete information about solid and extra information
SIr Plzz do guide me that why only 7 groups of transition element are used for salt analysis ? Others are not used for salt analysis...mean other tranistion elements?
In this synthesis of indole the addition of keto thioether to choloroamine to give sulphonium ion. this reaction is carried out at low temperature . why?
Write a list of reduction half reactions for... Fe, Fe+3 Cu, Cu+1 Pb, Pb+2
How many electron have br+ Neutral Br, being in Group 7A, has 7 valence electrons; therefore, Br+ has 6.
conclusion on the topic caustic soda
Merits of atomic fluorescence spectrometry technique: The merit of the AFS methods lies within the greater sensitivity achievable because of low background and interference.
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd