Active Zinc Oxide
Aluminium Silicate
Aluminium Stearate
Aluminium Stearate Gel
Ammonium Chloride
Barytes-Micronised
Calcite-Micronised
Calcium Carbonate
Calcium Chloride
Calcium Chloride Powder
Calcium Chloride White Powder
Calcium Hydroxide
Calcium Hydroxide Powder
Calcium Stearate
Calcium Stearate Plastic
Calcium Sulphate
China Clay
Ferric Chloride
Glue Powder
Hydrated Lime
Hydrated Calcium Silicate
Kaolin
Magnesium Carbonate
Magnasium Chloride Flakes
Magnasium Chloride Anhydrous
Magnasiun Stearate
Magnasium Sulphate
Other Products
Pigments
Precipitated Silica
Sodium Bi - Sulphite
Sodium Meta - Bi - Sulphite
Sodium Sulphite
Stearic Acid
Stearic Acid Chemical
Stearic Acid Cosmetics
Stearic Acid Powder
Talc Powder
Vinly Resin
Zinc Carbonate
Zinc Chloride
Zinc Chloride Anhydrous
Zinc Chloride Powder
Zinc Chloride Solide
Zinc Chloride Imported
Zinc Dust
Zinc Oxide
Zinc Stearate
Zinc Stearate Plastic
ROLE OF ZINC OXIDE (ACTIVATED / TRANSPARENT)

Organic accelerators used in rubber compounding are almost always dependant on the presence of activators. Zinc Oxide is the most important of such activators.

 

ZINCOSIL NK-A AND NK-T

Because of their very small particle sizes zinc-oxide active & transparent (NK-A & NK-T) cause very powerful activation of the cure. Depending on the type and amount of accelerator present they can considerably delay the onset of cure without simultaneously extending the total curing time.

Because of stronger activating effect, the amount of this substance needed for the same modulus is lesser as compared to ordinary Zinc Oxide.

Unlike ordinary Zinc-Oxide, ZINCOSIL NK-T is compatible with the production of transparent goods as it does not impair the transparency of the vulcanizates when added in small and moderately large amounts.
They cause no changes in the colour of the vulcanizates. They reduce yellowing in white and light coloured goods which are exposed to strong light.
As they do not have pigmenting properties, they do not influence effect of colour pigments provided they are not too heavily loaded.

Due to exceptionally low lead compound contents they are particularly suitable for vulcanizates intended to be practically free from heavy metals.

They do not boom.
 
APPLICATIONS

Can be used as activators in : 1. sulphur cures 2. peroxide cures (often) 3. sulphurless metallic-oxide cures. Used as crosslinking agent for lattices with reactive groups and for CR.

Suitable for following types of rubber-NR, IR, BR, SBR, NBR, IIR, CR, EPDM, CSM.

Transparent goods i.e. injection caps, condoms, gloves, lab. appartus.

Rubber foam.

Highly elastic vulcanizates (spring components).
 
PACKING

(25 kgs) In new laminated H.D.P.E. bags with loose polythene liner inside.

 
INCORPORATION / USAGE

Owing to the fineness of particles, ZINCOSIL NK-A and NK-T are very easy to incorporate and disperse well.

They raise the viscosity of the mix. Large additions stiffen the mix considerabely.

As their propertion is increased, the thermal conductivity of rubber mixes is raised which is an advantage in hot air curing.

In large proportions, zinc-oxide active, NK-A behaves like a reinforcing filler. It gives vulcanizates high tensile strength and rebound resilience with a simultaneous increase in hardness. It also imparts resistance to ageing and protection against flex-cracking.

 
WHY USE ZINC OXIDE (ACTIVATED / TRANSPARENT)

Our strong technical background in terms of R & D facilities and scientific personnel has enabled us to optimize our production cost to provide you the best possible quality at a very reasonable price.

Equipped with a rubber laboratory, we have modified our product to give an excellent combination of various desirable properties in rubber.

Fineness of particles or surface area is the most important property which determines activity. We have optimised the surface area to give best results in rubber.

 
TYPICAL PHYSIOCHEMICAL PROPERTIES OF ZINC OXIDE
GRADE
RT-70

Property

Unit

Value

Surface Area (BET) 3

m²/gm

22-26

Bulk Density 1,4

gm/cc

0.35-0.45

Oil Absorption

%

110-130

pH (2% acq. Solution) 5

%

7.2-8.8

ZnO

%

72±4

Pb, Cu, Ni, Mn, Cd

ppm max.(total)

20

Moisture ( at 90°C) 2

%

<2.0

Residue on 300 mesh 6

%

<0.8

 
GRADE

AH-90

Property

Unit

Value

ZnO

%

90±2

Electrolytes

%

<1.0

pH (2% acq. Solution) 5

--

7.0-8.5

Bulk Density1,4

gm/cc

0.8-0.9

Moisture ( at 90°C) 2

%

<1.0

Heavy Metals

ppm (max. total)

20

Residue on 300 mesh 6

%

<0.8

Surface Area (BET) 3

m²/gm

15-20

Water Absorption

%

34-38

Oil Absorption

%

32-36

 
GRADE
White Seal (Unizinc)

Property

Unit

Value

ZnO

%

99.5 min

Bulk Denisity

Gm/cc

0.55-0.60

pH value

--

7.0-7.5

Moisture

%

<0.5

Matter Soluble in water

%

<0.2

Matter insoluble in HCL

%

<0.15

Total Metal Content

%

0.11max

Loss on ignition

%

0.5 max

Residue On 45 Micron

%

<0.15

Whiteness

--

STD SAMPLE

 
GRADE
Plating Grade

Property

Unit

Specification

   
Min
Max

Zinc Oxide

%

99.3000

0.0000

Matter insoluble in HCL

%

0.0000

0.2500

Iron as Fe

PPM

0.0000

250.0000

Lead as Pb

PPM

0.0000

1000.0000

Cadmium as Cd

PPM

0.0000

250.0000

Copper as Cu

PPM

0.0000

20.0000

Hanganese as Mn

PPM

0.0000

20.0000

specific Gravity

 

5.4000

5.8000