Flame-retardant ceramic silicone rubber and preparation method thereof

Abstract

The invention discloses flame-retardant ceramic silicone rubber. The flame-retardant ceramic silicone rubber contains the following materials in parts by weight: 100 parts of silicon rubber, 1-100 parts of silica, 0-30 parts of silicone oil, 0.00001-10 parts of platinum in platinum complex or platinum compound, 0-10 parts of coupling agent, 1-100 parts of flame retardant, 1-150 parts of ceramic powder and 0.01-10 parts of vulcanizing agent. A preparation method of the flame-retardant ceramic silicone rubber comprises the steps of milling the materials in a kneader, vacuumizing, adding into the kneader, milling uniformly to form lumpish ceramic rubber, cooling, adding the vulcanizing agent, and carrying out open milling, thereby obtaining the flame-retardant ceramic silicone rubber. The flame-retardant ceramic silicone rubber is easy to process and low in production cost and can be ablated into a ceramic-like shell, so as to protect an ablated object from being damaged. According to the flame-retardant ceramic silicone rubber disclosed by the invention, due to the addition of the platinum complex or platinum compound, the sintering temperature for the flame-retardant ceramic silicone rubber can be lowered, and the reaction rate of preparation can be increased, so that the production efficiency is increased, and the production cost is reduced.

Description

Technical field [0001] The invention relates to a rubber, in particular to a flame-retardant ceramic silicon rubber with a fire-resistant function. Background technique [0002] At present, most fire-resistant and flame-retardant cables use magnesium oxide mineral insulation or mica tape winding to achieve fire resistance. [0003] However, magnesium oxide mineral fire-resistant insulated cables have the following shortcomings in terms of manufacturing and application: first, high equipment costs, magnesia mineral fire-resistant insulated cables require special production and processing equipment, which is expensive and high in equipment costs; second, production costs High, because the outer sheath of the magnesium oxide mineral refractory insulated cable is all copper, the high price of copper makes the production cost higher, and it is restricted to a certain extent in practical application; third, the production, processing, transportation, and wiring It is inconvenient to lay...

AI Technical Summary

Problems solved by technology

[0003] However, magnesia mineral refractory insulated cables have the following disadvantages in manufacturing and application: first, the equipment cost is high, and magnesia mineral refractory insulated cables require special production and processing equipment, which is expensive and the equipment cost is high; second, the production cost High, because the outer sheath of the magnesia mineral refractory insulated cable is all copper, the price of copper is high, making the production cost higher, and it is limited to a certain extent in terms of practical application; Laying, installation and use are inconvenient, because copper sheathed magnesium oxide mineral fire-resistant insulated cables have special requirements in the process of production, processing, transportation, line laying, installation and use, such as the production and processing of magnesium oxide mineral fire-resistant insulated cables cannot be compared with polymer materials Such convenient processing, cumbersome and complicated laying and installation, high cost of raw materials, it is difficult to popularize and apply on a large scale, especially in civil buildings, etc., until now it has not been widely and universally used

[0004] In the production process, the fire-resistant cable wrapped with mica tape needs to be wound in multiple layers. Due to the limitation of process conditions, lap joint defects often occur at the lap joints. The fire-resistant effect is reduced, and the circuit is short-circuited, making it difficult to ensure the safety and smoothness of power and communication in case of fire.

Mica tape is not well sealed, and the material often contains fluorine, which does not meet the requirements of some halogen-free cables