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Experimental test of antimony trioxide substitute DFRT-01 in PVC cable material

2025-10-31 16:39
With the development of China's power grid transformation, new energy vehicles, 5G communication and other emerging industries, the amount of wires and cables has increased, and the requirements for the fire-retardant performance of wires and cables are also higher.
At present, domestic wire and cable manufacturers generally use antimony trioxide (Sb₂O₃) as a flame retardant, which is an important antimony compound with unique physical and chemical properties. It is a white crystalline powder, odorless and tasteless, with stable chemical properties, and it is not easy to react with other substances at room temperature.
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However, in order to reduce costs, some enterprises may adopt inferior antimony trioxide flame retardant (a large amount of arsenic trioxide is doped instead of antimony trioxide, and the arsenic content is seriously exceeded. Arsenic, commonly known as arsenic, is classified as a highly toxic chemical, and the arsenic content of inferior products exceeds the standard by nearly 100 times). Although the national policy and standards limit the arsenic content, the sampling frequency at the grassroots level is low, and the physical properties are emphasized, thus the elemental analysis is ignored.

Product recommendation: DFRT series

Flame retardant synergist DFRT-01 is a product designed to replace antimony trioxide, which can effectively replace 30-50% pure antimony content in the formula, and reduce the comprehensive cost by about 30% on the basis of maintaining the original flame retardant performance! And the product is antimony-free, arsenic-free, environment-friendly and halogen-free. It can also promote the extrusion and fluidity of products.

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Customer Case Feedback: Application in PVC


①（Sb₂O₃）
②（DFRT-01）
polyvinylchloride
100
100
DOP
50
50
stabilizing agent
7
7
CaCO₃
30
30
Sb₂O₃
4
2.8
Dstone DFRT-01
0
1.2

（Formula of PVC cable material）

①：Original formula, without adding DFRT-01.

②：In the original formula, 30% antimony trioxide is replaced.

Results: The physical properties of sample ② were basically the same as that of sample ①, and the oxygen index was reduced from 28 to 27, and the flame retardancy was still qualified.



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