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Ecopiren in PVC wire and cable formulations

PVC is one of the most commonly used polymers worldwide. Although PVC already has a certain level of intrinsic flame retardancy, due to high flammability of added plasticizers it is still necessary to add flame retardants to meet most international fire standards. Examples are low voltage cable applications and wire insulations.

All Ecopiren products are perfectly compatible with PVC. An advantage of magnesium hydroxide when compared to ATH is its higher decomposition temperature and its greater heat absorption. See the table below for some comparisons.

Product Decomposition Temperature Energy of Decomposition
Aluminum Trihydrate or ATH 190°C 1100 J/g
Magnesium Hydroxide or Ecopiren Mg(OH)2 330°C 1250 J/g

Large energy of decomposition expressed in a stronger cooling composition or polymer base in the conditions of pyrolysis or combustion. The high decomposition temperature means that in the formulations containing Ecopiren higher processing temperatures can be used in comparison with ATH. This is a great advantage of the process meaning manufacturing cost savings for the cable producer.

Standard structures of composition

Typical PVC Wire & Cable Formulations with Ecopiren

Formulation Component Loading
PVC 100 parts
DINP Plasticizer 50 phr
Stabilizer & Process Aid phr
Ecopiren 3.5C; phr
Antimony Oxide or Antimony Oxide Replacement 10 phr
Replacement 27.0 38.0

 

Riser cable formulation without antimony oxide

Ecopiren 3.5 and Ecopiren 3.5 C (surface coated) have been successfully used in fire-proof PVC Riser cable applications. A typical Riser cable formulation without antimony oxide is shown below.

PVC Riser Formulation Component Loading
PVC 100 parts
Ecopiren 3.5С parts
DINP parts
Brominated DOP parts
CaZn Stabilizer 3 parts
Oxygen Index 31.0

Turnkey solutions for this field

The most demanded products of Europiren in this field are:

Ecopiren 3,5C

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