Section XXIII Viscosity Regulators... 98 Plastics Additives Degussa: AEROSIL for PVC Plastisols: This highly dispersed silica Aerosil has been an established concept in the plastics indu
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Degussa: AEROSIL for PVC Plastisols:
This highly dispersed silica Aerosil has been an established concept
in the plastics industry for years In many cases where problems of controlling viscosity such as thickening and thixotropizing must be solved, Aerosil – thanks to its extremely fine particles and high chemical purity – has proven very effective This statement also applies to the field of PVC plastisols
Aerosil 200
Aerosil 300
Aerosil 380
Aerosil is a synthetically derived silica which is produced by hydrolysis of silicon tetrachloride in an oxyhydrogen flame This synthesis results in very pure, highly-dispersed silicas, the specific surface areas of which are used to designate the various grades of the product That is, the numbers 200, 300, and 380 indicate that the particular product has a specific surface area of 200, 300, and 380 m2/g respectively
Aerosil 200:
Fluffy white powder
BET surface area: m2/g: 200+-25
Average primary particle size: nm: 12
Ignition Loss: %: <1
pH Value: 3.6-4.3
SiO2: %: >99.8
Aerosil 300:
Fluffy white powder
BET surface area: m2/g: 300+-30
Average primary particle size: nm: 7
Ignition Loss: %: <2
pH Value: 3.6-4.3
SiO2: %: >99.8
Aerosil 380:
Fluffy white powder
BET surface area: m2/g: 380+-30
Average primary particle size: nm: 7
Ignition Loss: %: <2.5
pH Value: 3.6-4.3
SiO2: %: >99.8