タイトルまたは説明
In the rubber industry the petroleum
oils are mainly used as:
RUBBER PROCESS OILS (used by
manufacturer of finished rubber
product, to aid processing) and RUBBER EXTENDERS
OILS
(used by raw material
manufacturers to soften polymers).
Extender oil by swelling the polymer
and by providing lubri
cants between rubber
molecules softens the stiff rubbery polymers.
By adding extender oils the molecular
weight, viscosity & solvency of the base polymers
can be varied & because of oil content
more additional ingredients
can be blended.
Process oils assist in the mixing
operation, reduces compounding time, improve process ability and
modify the physical
properties of the finished
product.
New rubber compounding process
requires high speed mixing & short
mixing times & proper polymer consistency for rapid
processing. Process oils
can aid to optimize these conditions, the compounder
can achieve a workable mass with good
dispersion of fillers by selecting correct
process oil.
Sticking to calendar & Process oils as
well as other ingredients (like wax)
import an oiliness to the rubber mass that helps
prevent
tube machine dies. It is particularly
important in extrusion & injection
mouldings where output & rejection rates are adversely
affected by a sticky non-uniform
formulation.
Since the primary plasticizers in pvc
leather cloth manufacturing are costly, process oils may be used as
secondary plasticizers to
reduce cost.
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