Soda lime glass and safety glasses, Chemistry

Q. Write an account of soda lime glass and safety glasses.

Ans. Soda-Lime Glass or soft glass: It is the ordinary glass in which Na2O is added to the melt to oxide on heating.

Properties:

1.      Low cost

2.      Resistant to devitrification and water

3.      Attacked by common reagents like acids

4.      Its melts easily

Uses: Soft glass is widely used for (a) Window glasses (b) Electrical bulbs, (c) Plate glasses, (d) Cheaper table wares like bottles, jar etc. (e) Cheap laboratory glassware.

Safety glass or laminated glass: " A glass which when breaks does not allow its broken pieces to fly apart."

Preparation: Safety glass is prepared by placing a thin layer of Vinyl plastic between two sheets of glass. Then the plastic and glass sheets are pressed together under heat, so that the plastic thin layer is sandwiched in between the glass sheets. The edges of the combined sheets are sealed with some water resistant compound. The glass becomes quite tough. (The glass sheets used are ordinary glass sheets and plastic sheet used is of either cellulose acetate of polyvinyl butyl (acetyl) resin).

Properties:

(1)         Safety glass shatter-proof.

(2)         It is quite touch.

Uses:

(a)          Three layer laminated glass is used as wind shields in automobile and aeroplane industries.

(b)         Five-layer laminated glass is used in building construction.

(c)           Several layer laminated glass is bullet proof and used for making looking windows, automobile wind screens.

Posted Date: 7/21/2012 7:27:30 AM | Location : United States







Related Discussions:- Soda lime glass and safety glasses, Assignment Help, Ask Question on Soda lime glass and safety glasses, Get Answer, Expert's Help, Soda lime glass and safety glasses Discussions

Write discussion on Soda lime glass and safety glasses
Your posts are moderated
Related Questions
What is the difference among multimolecular and macromolecular colloids? Give one example of each type. How are associated colloids dissimilar from these two types of colloids?

The following cell is used for measuring the partial pressure of oxygen at 700 o C. (Pt) Cu 2 Cu 2 0 / 0.85 ZrO 2 - 0.l5 CaO / O 2 (Pt) Knowing that conduction through the

where is the asterisk located

Give the styx code of b4h10 and which type of bond present in it?


Q. Can you explain Gels ? Gels may be formed by the proteins of egg or flour in products like souffles, puddings, custards, batters and doughs. When the protein particles a

The mass of a photon with a wavelength equal to  1.54 x 10 -8 cm  is: (1) 0.8268 x 10 -34 kg                      (2) 1.287 x10 -33 kg         (3)1.4285x 10 -32 k

The number of orbitals in d  sub-shell is : (1) 1        (2) 3        (3) 5        (4) 7 Ans: 5

Q. Show the Oxoacids of Sulphur? As you know, oxoacid is an acid in which the ionisable hydrogen atom is bonded, through an oxygen atom to the central nonmetal atom, e.g., E-OH

Correct statement is: (1) K=4s 1 , Cr= 3d 4 4s 2 , Cu= 3d 10 4s 2           (2)  K=4s 2, Cr= 3d 4 4s 2 , Cu= 3d 10 4s 2        (3) K=4s 2 Cr= 3d 5 4s 1 , Cu= 3d 10