Study On Frictional Properies of Textile Fiber | Frictional Properies of Textile Fiber

1. Frictional Properties

2. • Content:
1. What is frictional properties?
2. Factors affecting frictional intensity
3. Amonton’s Law of Friction
4. Co-efficient of friction
5. Measurement of co-efficient of friction (Static
& Dynamic)
6. Importance in textile industry
7. Problems created in textile sector
8. Minimizing methods

3.  Definition of frictional properties:
The properties shown by textile fibers
due to friction are called as frictional
properties.

4. Factors:
Fiber composition
State of surface
Pressure between
surfaces
Angle of contact
Speed of sliding
Temperature
Water absorption
Load
Oil content/Viscosity

5. Amonton’s Law of friction:
 The frictional force is independent of the
area of contact between two surfaces.
 The frictional force `F’ is proportional to the
normal reaction/load N.
 Kinetic force is independent of the speed of
sliding.

6. Co-efficient of friction:
F∞ N
where F= Frictional force & N= Normal or
perpendicular force
So, F= µ N Or, µ= F/N
Here, µ is the proportionate constant known as
co-efficient of friction.

7. Static Capstan Method
Dynamic Capstan Method

8. Importance of Frictional
Properties in textile Industry:
 Reduce breakage during sliver
formation
 Helps in drawing & drafting Process
 Maintain winding & warping process
 Twisting during spinning
 Lusture & appearance of the cloth
 Clean yarn

9. Problems created due to friction
in Textile sector:
 Neps formation
 Yarn breakage during weaving
 Handle properties changed
 Elongation occurs
 Hairiness
 Static charge formation
 Worn out different machine parts

10. Minimization of frictional
Intensity:
 By processing with lubricants
 By chemical treatment
 By finishing process

11. Any Question??