what makes buna-n resistant to petro, lubricating oil and organic solvents?
Asked by ayushi pandey | 17th Jul, 2014, 10:18: PM
Buna-N is obtained by copolymerization of 1, 3-butadiene and acrylonitrile.
Acrylonitrile is responsible for resistance to petro, lubricating oil and organic solvents. Nitrile is the most widely used elastomer in the seal industry.
It has excellent resistance to petroleum products , good physical properties and is superior to most rubbers in regards to compression set, tear and abrasion resistance.
Answered by Hanisha Vyas | 18th Jul, 2014, 09:59: AM
- A polymer sample contains 30%(by weight) of chains with molecular weight 10000, 30%(by weight) of the chains with molecular weight 20000, and the rest of chains with molecular weight 30000. Calculate the number average and weight average molecular weight of the sample.
- Write the structures of monomers used to obtain the following polymers: (a) Natural rubber (b) PVC (c) Nylon-6,6
- What is natural rubber?
- What is a copolymerisation reaction? Give example.
- What are the uses of polyethylene?
- How is nylon-6,6 prepared?
- How is polyethylene prepared?
- What is Buna-S? How is it prepared?
- What is PMMA, PAN and PVC?
- Give examples of synthetic rubber?
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