ADINS® Clay Sil-1 is characterized by its free-flowing powder appearance. Achieving the desired improvements hinges on effectively dispersing ADINS synergists into the polymeric matrix.

Chemical Name: Sepiolite

Chemical Family: Magnesium & Magnesium Compounds, Silicates

Compatible Polymers & Resins: Ethylene Vinyl Acetate (EVA), Polyethylenes (PE), Polypropylenes (PP), Polyvinyl Chloride (PVC)

Carrier: Polyethylenes (PE), Resin-based

Features: Free Flowing

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Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Compatible Polymers & Resins
Plastics & Elastomers End Uses
Formulation Applications
  • Dispersion of ADINS synergists into the polymeric matrix is key to obtain the desired improvements but it is not always an easy step.
  • To obtain a good dispersion of the additives, high shear should be applied to the melt during compounding step. The high level of additive dosage in some formulations, and the increased viscosity obtained as a result, make mixing with high shear a difficult step.
  • To facilitate ADINS incorporation, a masterbatch with a content of 40 wt% of the synergist has been designed to guarantee a good dispersion in all processing conditions for the following formulations:
    • EVA
    • PE & PP
    • PVC

ADINS Masterbatch performance in an EVA formulation for cable:

  Reference

ADINS Clay Sil-1

EVA28 MFI=3 24,5 24,5
mLLDPE MFI=3 - 5 6 6
LLDPE-g-MAH 4 4
ATH (fine) 64 62
Silicon MB 1 1
Stabilizer 0,5 0,5

ADINS Clay Sil 1 (powder form)

  1,5

Properties

Physical Form
Appearance
Free - flowing powder
Physico-Chemical Properties
ValueUnitsTest Method / Conditions
Moisture Contentmax. 4.0%-
Particle Size Distribution (Dry Sieving, Residue on 45 μm)max. 3.0%-

Regulatory & Compliance

Chemical Inventories

Technical Details & Test Data

Cone Calorimeter Test and Smoke Chamber Test

Cone Calorimeter (ISO 5660-1) (50 kW/m2 and 25 mm)

  • Heat Release Rate (HRR): rate at which heat is generated by fire.
  • Peak of Heat Release Rate (pHRR): Maximum of HRR.
  • Total Heat Release (THR): sum of the heat released from the ignition.
  pHRR (kW/m 2)  

THR (1200s) (MJ/m 2

 
Reference 257.2   68.2  
ADINS Clay Sil-1 158.4 -38% 64.8 -5%
  • ADINS synergists, both in powder and masterbatch forms, enhance the flame retardance performance of the formulations.
  • Grade in powder presents better behaviour due to the differences between formulations. In the masterbatch, additional carrier polymer is present that has an impact in the heat released by the formulation.

ADINS® Clay Sil-1 - Cone Calorimeter Test - 1

Smoke Chamber (ISO 5659) (50 kW/m2 and 25 mm)

  • Total Smoke Production (TSP): sum of the smoke released from the ignition.
  • Specific Optical Density (DS): Density of smoke measured by an opacimeter.
  • Maximum DS (DSmax).
 

THR (1200s) (min)

 

Ds max (20’) (adim)

 
Reference 2134.2   150.7  
ADINS Clay Sil-1 1708.5 -20% 129.3 -14%
  • ADINS synergists, both in powder and masterbatch forms, enhance the flame retardance performance of the formulations.
  • Smoke emission is further reduced with the masterbatch format, which presents enhanced dispersion of the particles in comparison with powder form.

Conclusions

  • ADINS Clay creates a tridimensional structure in fire conditions improving the mechanical and gas barrier properties of the char layer.
  • The consistency of the char layer has an important impact in the smoke reduction.
  • ADINS Clay reduces the peak of the Heat Release Rate and delays the Time to ignition.