Peptizers

Product Peptizol
Peptizol -7

Peptizer with a Conventional Blend of Pentachloro Thiophenol, Organo-Metallic Complexes, Organic and Inorganic Dispersing Agents

Peptizol - 11

Peptizer with a New Generation Blend of Dibenzamido Diphenyl Disulfide. Organo-Metallic Complexes, Organic and Inorganic Dispersing Agents.

Presentation

Both grades are available in powder, pellet and prill forms.
Standard packing 25 kgs nett. In multilaver paper/Hessian Polythene Laminated Bag and LDPE inner liner.

Dosage

0.10 to 0.30 phr for Natural Rubber. For SBR & NBR, higher dosages are recommended. However, oil-extended SBR & NBR required comaprativeley less dosages (0.50 to 0.70 phr) of Peptizol-7/Peptizol-11 than non-oil extended types (1.0 to 2.0 phr).

Durability/Storability

12 months for both grades if stored properly in dry & cool atmosphere.

 Behaviours in Rubber

Pepizol-7/Peptizol-11 considerably accelerates the peptizing of Natural Rubber and Synthetic Rubbers at mastication temperature above 80oC thus saving a lot of time and energy. The higher the temperature of rubber, the greater the efficiency.

However, the temperature of the rubber should not exceed 165oC, as otherwise, rubber will cyclize above this level. Masticating in the internal mixer is especially advantageous since the temperature required for peptizing are generally reached rapidly.

At high temperature (> 130oC) i.e. during mastication in an internal mixer, efficiency of Peptizol-11 is found comparable to Peptizol-7.

Effects of reinforcing Carbon Black on Peptization during compound mixing using Peptizol-7 & Peptizol-11, have also been observed almost similar.

 Processing Benefits Quality / Cost Benefits of using Peptizol-7 / Petizol- 11

These Peptizers decrease the viscosity of rubbers, promote rapid and good  dispersion of fillers & chemnicals and increase compound plasticity as compared to conventional & international Peptizers.

Reduces mixing cycles and thereby saves plenty of time and costlier electrical energy.

Reduces viscosity of Rubber by chemical Peptization with added chain lubrication, hence facilitates improved processing, i.e. calendaring or extruding by lowering the nerve of the rubbers.

The rheological propereties, such as die swell, calender shrinkage and building tack are improved.

In the preparation of elastomer blends with elastomers of widely different viscosities, both Peptizol-7 & Peptizol-11 play an important role. If the viscosities differ considerably, the rubbers cannot be homogeneously mixed, which leads to loss of properties, in the vulcanizate.

Not affecting the mechanical properties, stability and ageing od compounds and vulcanizates. Practically both Peptizol-7 & Peptizol-11 have no influence on the vulcanizate properties.

While mastication is integrated with the mixing process by using Peptizol-1/Peptizol-11, vulcanizate properties like flex fatigue resistance are improved.

 Functions & Advantages

  • Rapid and even dispersions as compared to conventional and known International Peptizers.

  • Reduces mixing cycles and thereby saves plenty of time and power.

  • Reduces viscosity of Rubber by Chemical Peptization with added chain lubrication.

  • Suitable for premastication as well as single stage processes.

  • Effective on open mi8ll above 80oC and in internal mixers upto 160oC.

  • Do not have any adverse effect on Scorch and Cure Characteristics of Rubber.

  • Do not affect physical properties and ageing behaviour of the vulcanizates
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