Paper Title :PVC Compounding: Preparation, Physical and Mechanical Properties
Author :N.S. Yousef
Article Citation :N.S. Yousef ,
(2018 ) " PVC Compounding: Preparation, Physical and Mechanical Properties " ,
International Journal of Mechanical and Production Engineering (IJMPE) ,
pp. 27-32,
Volume-6,Issue-12
Abstract : Compounding of PVC represents an important class of engineering materials that have been intensively
developed in recent decades. The incorporation of different additives such as fillers, plasticizers, and stabilizers, into
thermoplastics has been widely practiced in industry to extend them and to improve their properties. Among these improved
properties are mechanical characteristics, dimension stability, permeability, process ability, thermal stability and flameretardant
enhancements, as well as cost reduction with respect to the bulk polymers. In the present study, compounding of
Polyvinylchloride (PVC) with some additives is studied for the enhancement of physical and mechanical properties.
Composites of poly(vinyl chloride) (PVC) is blended with different fillers, stabilizers , plasticizers and lubricant such as:
calcium carbonate as a filler and stearic acid as a lubricant, tribasic lead sulfate as a stabilizer and Di-octyl phthalate (DOP)
as a plasticizer, and the effect of compounding on the physical and mechanical properties of polyvinylchloride (PVC) is
studied. The experimental work is conducted in a batch mixer at a temperature of 120º C for half an hour with continuous
stirring for both rigid and soft PVC. In case of rigid PVC, the filler content ranged from 10- 20% by weight of sample,
tribasic lead sulfate (2.2 wt%) and lubricant (stearic acid 0.5 wt%) and no plasticizer is added in the sample . In case of soft
PVC, no filler is added, plasticizer ranged 60- 90%,by weight of sample, tribasic lead sulfate stabilizer (3 wt%) and lubricant
(stearic acid 0.5 wt%). In case of rigid PVC, experimental results show that tensile stress increased with increasing filler
content and reached maximum value of (531 kg/cm2) at12 % weight of CaCO3 filler. Yield stress increased with increasing
filler content and reached maximum value of (521 kg/cm2) at 12 % weight of CaCO3 filler. On the other hand, the Izod
Impact decreases with increasing filler content. % Elongation at break increased with increasing filler content and reached
maximum value of (200 %) at 12 % weight of CaCO3 filler. Relative density of rigid PVC is directly proportional with %
weight of filler. In case of soft PVC, experimental results show that tensile stress is directly proportional with plasticizer
content and the optimum % plasticizer is 70 %. Relative density of soft PVC is directly proportional with % weight of
plasticizer and the optimum % plasticizer is 70 %.% Elongation at break increased with increasing plasticizer content and
reached maximum value of (380 %) at 70 % weight of plasticizer and then decreased. Hardness (shore A) is directly
proportional with plasticizer content.
Key words - PVC, compounding, fillers, plasticizers, stabilizers, lubricant, physical properties, mechanical properties.
Type : Research paper
Published : Volume-6,Issue-12
DOIONLINE NO - IJMPE-IRAJ-DOIONLINE-14510
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Published on 2019-02-22 |
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