Fabrication of rubber objects, Chemistry

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

 

 

Posted Date: 7/21/2012 8:38:33 AM | Location : United States







Related Discussions:- Fabrication of rubber objects, Assignment Help, Ask Question on Fabrication of rubber objects, Get Answer, Expert's Help, Fabrication of rubber objects Discussions

Write discussion on Fabrication of rubber objects
Your posts are moderated
Related Questions
Explain in detail about the Chemical vapaor deposition Chemical vapaor deposition (CVD) is a chemical process used to produce high-purity, high-performance solid materials. P

Gustation - The Sense of Taste The word ‘taste' means not only a sensory response to the soluble materials in the mouth but also aesthetic appreciation. It has been noted many

Q Explain Working of Galvanic Cell? Ans. There are several types of electrochemical cells. One type of electrochemical cell is called a galvanic cell . (A battery is a galvan


Why are the lanthanides and actinides series call the f-block

please tell the observation & inference, when ammonium phosphate (NH4)3PO4 undergoes charcoal cavity test & cobalt nitrate test.....

The gas constant, also known as the universal, usually denoted by symbol R is a physical constant which is featured in a large number of fundamental equations in the physical scien

Q: For a homogeneous reaction in which the reactants and products are solutes in a solution, write a rigorous relation between the standard molar reaction enthalpy and the temperat

How is chemical reaction reversible and irreversible?

Q. For a homogeneous reaction in which the reactants and products are solutes in a solution, write a rigorous relation between the standard molar reaction enthalpy and the temperat