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Ceramic refractory flame retardant silicone rubber

Ceramic refractory flame retardant silicone rubber

Product description

Ceramic refractory silicone rubber is a new type of composite material that can be vitrified at high temperature.It is quickly burned into a hard and complete shell at 500-1000 ℃ to ensure that wires and cables are not damaged in case of fire and play a solid role in smooth power and communication.

The protective effect of Ceramic refractory resistant silicone rubber can replace mica tape as the fire-resistant layer of cables. In particular, It can be used not only as a refractory layer, but also as an insulating layer in medium and low voltage fireproof wires and cables.

Main features

1. Self supporting ceramic body formed in flame

When the rubber material containing inorganic filler is exposed to the flame, the rubber will degrade or burn, and the degradation or combustion products will be left. These residues are usually non condensing or non self-supporting, or even broken into particles or powders because this has no fire protection effect. When the ceramic rubber with special design formula is exposed to the flame,(depending on the rubber variety and formula, the Vitrification occurs in the range of 500 ~ 800 ℃ or above), and sintered into porous self-supporting ceramic body, which can be maintained within a certain time (0.5 ~ 2H).Maintaining the integrity of the structure can give full play to the effect of "passive fire prevention" and win valuable time for fire safety.

2. It has excellent strength and good thermal shock resistance

The vitrified sintered body is relatively hard, with ceramic sound when knocking, and has certain flexural strength and dielectric strength. The flexural Strength of ceramic silicone rubber is much higher than that of general silicone rubber, and it increases obviously with the increase of temperature. Spray water into the high-temperature ablated specimen in the simulated fire fighting process, the sintered ceramic silicone rubber does not crack, showing good thermal shock resistance.

3. Halogen free, low smoke, low toxicity, self extinguishing, environmental protection

Ceramic silicone rubber can achieve flame retardant and self extinguishing effect without adding halogen flame retardant. Flame retardant UL94V-0. After being burned for a few minutes, the smoke will be completely cut off. In the next sintering process, there will be no smoke. The combustion of ceramic silicone rubber produces carbon dioxide, water and silicon dioxide, which are non-toxic substances.

4. Good electrical performance

The electrical properties of the ceramic silicone rubber with optimized formula:the volume resistivity before sintering is not less than 1015 Ω• cm, and with the increase of sintering temperature,the volume resistivity decreases. After burning at 1000 ℃ for 30min, the volume resistivity decreases to 107 Ω• cm.

5. Easy to process

The production equipment of ceramic silicone rubber compound is the same as that of general silicone rubber. The compound has good extrusion performance and molding performance. The silicone rubber wire and cable equipment can be directly used to extrude and vulcanize into wires and cables without adding equipment. The production process of fire-resistant cable is simplified and the cost is reduced.


Ceramic wires & cables

Ceramic miscellaneous parts

Packing and Storage

Packing:20KG carton.

Storage:When the product is stored unopened at room temperature, the shelf life of the product is 1 year from the date of production,It is recommended to use it within 3 months. If it exceeds 3 months, the mixing time of the product need to be extended.

*Please wear protective glasses and gloves when operating this product.

*Store in a dry and cool place, avoid direct sunlight.

*Keep out of the reach of children.

Storage beyond shelf life does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.

Technical data

Technical properties


MY HTV 8173

MY HTV 8873





GB/T 531.1-2008



hardnessShore A

GB/T 531.1-2008



Tensile strength (MPa) ≥

GB/T 528-2009



Elongation at break (%) ≥

GB/T 528-2009



Tear strength (KN/m) ≥

GB/T 529-2008



Volume resistivity (Ω.cm)

GB/T 1692-2008



Dielectric strengthKV/mm

GB/T 1695-2005



Dielectric constant

IEC 60250



Tracking resistance

IEC 60587



Oxygen Index

GB/T 10707-2008



Smoke toxicity

GB/T 20285



1.Curing condition:1.0% peroxide [2.5 Bis(t-butylperoxy)-2.5 dimethylhexane, 50 %] to cure under pressure at 175 ℃ for 5 minutes, and then making a 2mm thick test piece for testing.

2.if it is drying tunnel curing, it is recommended to add the Bis (2, 4-Dichloro Benzoy) peroxide vulcanizing agent. The dosage: 1% of the rubber weight.

3.The data will vary with different vulcanizing agents and different production conditions.

4.The technical date sheet above are for reference only.

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