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!
Natural rubber: Natural rubber is obtained by making small incisions on the bark of certain types of trees, like "Have a brasiliensis" and "Ganynle". White milky liquid substance (rubber latex) from the rubber tree by tapping is obtained. Latex is sieved to remove impurities then coagulated using coagulants like acetic acid or formic acid. Coagulated mass convert into coagulum. Coagulum is washed, dried and treated as follows:
1. Copper rubber: It is prepared by adding, little amount of sodium bisulphite, a retarder prevents, the discoloration and softening of rubber. Coagulum is allowed to drain for about two hours and after that it is passed through a creeping machine to form sheets of rubber of about 1 mm.
2. Smoked sheet: For preparing smoked sheets coagulation is carried out in long tanks. Sides of the tank have vertical grooves fitted with metal plates. First, dilute latex is added into the tanks and before that plates are removed. Coagulating agent, formic acid or acetic acid is then added and mixture is thoroughly stirred then plates are fitted and allowed to dry slabs are formed.
the equation of langmuir isotherm was derived on basis of
Q. Describe the manufacturing process of glass. Ans. Manufacturing process of glass 1. Melting: Raw materials, in proper properties mixed with pellets, are finally po
Perfumes: Perfumes are the matters, utilized to provide fragrance. Several requirements must be fulfilled to make use of a good perfume and any material, that just offers good
atomic radius and compared its atomic radius to the other radiuss in its group
Flash point - Characteristics of Hydrocarbons The minimum temperature at which an oil provides enough vapours to form an explosive mixture with air is considered as flash point
physical properties of salicylic acid?
How to syhtsize nanoparticles for nanomedicine
what would be the structure of SiS2 edge sharing linking polyhedra?
How can you classify matter in a easy to remember way?
rectivtiy of gillman reagent on cyclic alkyl halides is govern by what factors,,what is the product bicyclo[2,2,1] dibromide reacts with gillman reagent
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