The presentation is based upon the quality testing and procedures of natural rubber and synthetic rubber. This presentation also contains part of Mouding process in rubbers.

1. Presentation By:

2. INDEX
 Introduction
 Polymers
 Classification of polymers
 Rubber Compounding
 Quality Control Testing
 Result
 Moulding Process
 Applications
 Conclusion

3. INTRODUCTION
COMPANY PROFILE
 Bony Polymers (P) Ltd. was established in the year
1981
 Bony Polymers (P) Ltd. manufacturing Rubber
Moulded Parts are Rubber to Metal Bonded Parts,
Gaskets Materials, Hoses, Hose Assemblies & Fuel
Tubes for automotive and non automotive sectors.
 The annual turnover of the Bony Polymer Private
limited was almost 106 Millions$ in 2016-2017
session.

4. SEGMENTSCATERED
Two Wheelers 45% Cars10%
Trucks& Buses10%
Railways 18%
Construction &Agri.
Machinery 15%
Power Plant 2%

5. POLYMER
 The term polymer was coined by Jones Jacob Berzelius
in 1833.
 The word polymer comes from the Greek prefix poly-,
which means "many", and the suffix -mer, which means
"parts".
 RUBBER- These may describe as the material having
the Elastic properties
 Natural rubber is obtained from nearly from five
hundred different plants, but the main source is Hevea
braziliensis tree and its milky sap is known as Latex.
 Synthetic Rubber are mainly polymers of 1, 3-
Butadiene and Styrene form Styrene-Butadiene
Rubber (SBR) and Neoprene

7. RUBBER
COMPOUNDING
RUBBER/POLYMER
Natural Rubber- Latex(1,4-
polyisoprene) and
Synthetic Rubber-Neoprene
and Styrene butadiene (SBR)
FILLERS
White Fillers-Silica, Calcium
Silicates, Talc, China Clay, CaCO3
etc.
Black Fillers-Carbon Black etc.
OILS & CHEMICALS
OILS- Naphthenic, Paraffinic,
Aromatic etc.
CHEMICALS-
,
,
,

8. QUALITY CONTROL TESTING
DUROMETER
Its is a simplest method to measure the
hardness the rubber compound
The diameter of the rubber compound is
about 6-12mm
This device measure the hardness of
compound in the unit Shore.
Hardness is inversely proportional to
Penetration
The shape of the penetrator, the force
applied, and the duration of the test influence
the result

9. ELECTRONIC DENSIMETER
 It is used to calculate the density of the rubber
compound.
 The size of rubber compound should be 6-12
mm in diameter.
 The load carrying capacity of this instrument
lies between 0.1- 300g.
 It has resolution power about 0.0001gm/cm3
 This is the best instrument which is used in
the industry
 It calculate the result or density by using
follow equation:
Air Weight of rubber button ˟ 100
(Air weight- Liquid Weight)

10. RHEOMETER
 Rheo- To flow
 Logos- Science
Rheology is the study of the flow and deformation of matter
under stress.
 The rheometer has following
specifications-
 Average Time-5-7 Min.
 Temperature- 1700 C
 Pressure-5-6 Kg/cm2
 Torque Angle-3600

11. MOONEY VISCOMETER
 It is called as Mooney
viscometer as it invented by Melvin
Mooney.
 It is used to measure viscosity of
rubber and elastomers
 It consists of rotating spindle and
heated dies, the substance encloses and
overflows the spindle and the viscosity
is calculated by from the toque on the
spindle.
 Specifications-
Sample Weight- 3-5 gm
Average Time- 5 Min. Avg. Temp.-130-1500 C
Pressure Applied- 4-5 kg/cm2

12. UNIVERSAL TESTING MACHINE
Fig. The specified size of a test Dumbbell as given in JIS 6251

13. RESULT
NATURAL RUBBER SYNTHETIC RUBBER
DUROMETER
ELECTRO DENSIMETER
RHEOLOGY
TT
COMPOUND HARDNESS
(SHORE)
1. NR (Natural
Rubber)
55 + 5
COMPOUND HARDNESS
2. EPDM 70 + 5
COMPOUND DENSITY (gm/cm3)
1. NR (Natural
Rubber)
0.906-0.916
COMPOUND DENSITY(gm/c
m3)
2. EPDM 1.145-1.149
COMPOUND
ML(lb-in) MH(lb-in) Ts2 (Sec) Ts90 (Sec)
NR 18-25 33-55 0.50-1.0 1.20-1.80
COMPOUND
ML(lb-
in)
MH(lb-
in)
Ts2
(Sec)
Ts90
(Sec)
EP 4-7 28-39 1.30-
2.0
2.0-3.0
TO BE

14. MOONEY VISCOSITY
TENSILE TESTING
Industry is following three Standards for the quality control process
 ASTM – AMERICAN SOCIETY OF TESTING MATERIAL
 JIS- JAPANESE INDUSTRY STANDARD
 IS- INDIAN STANDARD
COMPOUND
ML ML(1+4)
NATURAL
RUBBER
27-33 35-45
COMPOUN
D
ML ML(1+4)
EP(Ethylen
e
propylene)
41-51 50-60
Time(Min
)
Hardnes
s
Tensile(k
g/cm2)
Elongati
on
(%)
6 50 170.91 239
8 50 185.71 223
10 52 193.20 243
12 52 195.08 245
15 55 195.82 248
Time
(Min)
Hardness Tensile
(kg/cm2)
Elongation
(%)
6 70 95.91 383
8 70 100.71 390
10 72 101.20 382
12 72 103.08 393
15 75 104.82 407

15. MOULDING
 Moulding is the process of manufacturing by shaping liquid or pliable
raw material using a rigid frame called a mould or matrix. This it may
have been made using a pattern or model of the final object.
 There are three basic techniques of the Moulding-
1. Injection Moulding
2. Compression Moulding
3. Transfer Moulding

16. APPLICATIONS OF RUBBER

17. CONCLUSION
 There are various differences in the properties and quality of
natural rubber and the synthetic rubber.
 The greatest tensile and elongation properties are obtained for
synthetic rubber compounds at 1500C and for Natural rubber
compound the tensile strength and elongation properties are
best obtained at room temperature.
 Warm maturing does not cause much lessening in ductile
properties of Rubber Compound. The shape and size of rubber
compound sample is according to standard designed by
industry.
 The rubber compounds should be check in quality control lab
before dispatch and if any measurement issues observe it goes
to R&D lab for further mastication process and again all
properties of rubber sample is check (Rheology, Viscosity,
Tensile strength, Density, Elongation Etc.)