Gelest Silicone Fluids - Gelest Inc.

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Gelest, Inc.
Appendix 2 – Blending Silicone Fluids
Any standard viscosity grade of polydimethylsiloxane can be
blended together with another viscosity grade of the same
fluid to produce an intermediate viscosity. This chart provides
a means for determining the proper blend ratio. The chart
should be used as follows:
Decide upon the viscosity grades to be blended. For high
accuracy, measure the actual viscosity of the blending
fluids.
Locate the lower viscosity on the left hand scale.
Locate the higher viscosity on the right hand scale.
Connect these two points with a straight line.
Locate the point where the line indicating the desired
blend viscosity intersects the constructed line. From this
point, follow down to the horizontal scale to read the
percent of the higher viscosity fluid to use in the blend.
This method is reasonably accurate in predicting blend viscosity
when the two fluids differ in viscosity by no more than
one magnitude (one power of ten). When fluids covering a
wider range are blended, the chart will only approximate the
finished viscosity. To achieve a viscosity of 800 cSt. as shown
in the example, 68% of 1000 cSt. and 32% of 500 cSt. fluids
are blended.
Viscosity Centistokes
100000
60000
30000
10000
5000
2000
1000
500
350
200
10
9
8
7
6
5
4.5
4
3.5
3
2.5
2
1.5
10
9
8
7
6
5
4.5
4
3.5
3
2.5
2
1.5
10
9
8
7
6
5
4.5
4
3.5
3
2.5
2
1.5
100
10
20 30 40 50 60 70 80 90
Percent of Higher Viscosity Fluid
Glossary of INCI (CTFA) Names
CTFA Name
Proper Name
Cyclomethicone
Volatile Cyclic polyDimethylsiloxanes – see Conventional fluids
Dimethicone
polyDimethylsiloxane, trimethylsiloxy terminated – see Conventional fluids
Dimethiconol
polyDimethylsiloxane, silanol terminated – see Gelest Reactive Fluids
Phenyltrimethicone
Phenyltris(trimethylsiloxy)silane and higher branched homologs – see Low Temperature
Branched Fluids
Dimethicone copolyol Polydimethylsiloxane polyether block or graft copolymer – see Hydrophilic Fluids
Laurylmethicone copolyol Dodecylmethylsiloxane-polyalkyleneoxypropylmethylsiloxane – see Hydrophilic Fluids
Stearyldimethicone
polyOctadecylmethylsiloxane – see Organic Compatible Fluids
Trimethylsiloxysilicate
MQ Resin – see Gelest Reactive Fluids
Trimethylsilylamodimethicone Amino or diaminoalkyl modified polydimethylsiloxane – see Gelest Reactive Fluids
Cetearlylmethicone
Proprietary mixed branched alkyl, linear alkylmethylsiloxane
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