Bakelite, Chemistry

Bakelite:

It is thermosetting plastics which are most widely used and the most important plastics.

Preparation:

It is formed by condensation reaction of phenol and formaldehyde.

Properties:

1.                 It possesses outstanding electrical and mechanical properties.

2.                 It is resistant to heat, water and many chemicals.

3.                 It decomposes by concentrated caustic alkalis, sulphuric acid and nitric acid.

Uses:

1.                 Uses for making switch boards, aircraft accessories, automobile and telephone.

2.                 Asbestos is added to increase resistance to heat and chemicals. Moulded sheets having many uses are made by impregnating paper sheets in resins.

 

 

Posted Date: 7/21/2012 8:27:05 AM | Location : United States







Related Discussions:- Bakelite, Assignment Help, Ask Question on Bakelite, Get Answer, Expert's Help, Bakelite Discussions

Write discussion on Bakelite
Your posts are moderated
Related Questions
In Bohr's model, atomic radius of the first orbit is γ the radius of the 3rd orbit, is: (1) γ/ 3 (2)γ (3) 3γ (4) 9γ Ans:  9γ

Q. Show the rate of decrease in atomic radius? The rate of decrease in atomic radius along the lanthanide series and also along the actinide series is even less than that in th

wat are d limitations of octet rule...??

how to count two oxidation no. of Cl in Ca(OCl)Cl?

Formula of a metallic oxide is MO.The  formula of its phosphate will be: (1) M 2 (PO 4 ) 2                      (2) M (PO 4 )         (3) M 2 (PO 4 )       (4) M 3 (P


What is the percentage of light that is engaged by the sample after a path length of 1 µm? Calculate the number of photons per second absorbed by the sample.   T

a. 'Hormones are chemical messengers.' Explain? b. Name the main disease caused due to lack of the vitamin and its source in each of the following: A, B 6 and E.

For the dissociation equilibrium of formic acid, HCO 2 H(aq) ↔ H + (aq) + HCO 2 - (aq), the acid dissociation constant at 298.15K has the value K a = 1.77 *10 -4 . (a) Find t

What are the Types of Acceptance Tests? There are two main aspects to acceptance testing: Measurement of Acceptability  Comparison of acceptability or preference