Preparation method of waterproof fireproof ceramic silicon rubber composite tape

Abstract

The invention the technical field of insulation materials for cables, and discloses a preparation method of a waterproof fireproof ceramic silicon rubber composite tape. The composite tape comprises a glass cloth reinforcement layer and a silicon rubber layer, wherein the silicon rubber layer is prepared from organic silicon compounded rubber and composite ceramic powder; the composite ceramic powder comprises a ceramic blank material and a ceramic glaze material; and the ceramic glaze material comprises silicon dioxide, potassium oxide, aluminum oxide, calcium oxide, zinc oxide and magnesium oxide. The preparation method comprises the steps of preparation of the organic silicon compounded rubber, preparation of the composite ceramic powder, silicone-acrylate emulsion treatment of the glass cloth, and calendering molding of the composite tape. The method disclosed by the invention is easy to operate and high in yield, and can implement mass production; the prepared waterproof fireproof ceramic silicon rubber composite tape can be vitrified to obtain a coating layer with excellent compactness and strength, so that the cable wound by the waterproof fireproof ceramic silicon rubber composite tape can still maintain the continuity of the circuit after being subjected to the coaction of 650+ / -40 DEG C flame ablation and spray water for some time, and can pass the vibration resistance test.

Description

technical field [0001] The invention relates to a method for preparing an insulating material for cables, in particular to a method for preparing a water and fire-resistant wrapping insulating material for fire-resistant cables that can be vitrified under flame conditions to form a hard protective layer. Background technique [0002] In recent years, fire accidents in public places have occurred frequently in my country. According to relevant data, since the beginning of the 21st century, there have been about 909,000 fires in my country, 10,059 people died, and the direct economic loss was about 6.03 billion yuan. The number of fire accidents in public places has exceeded It accounts for more than 50% of the total number of fire accidents in the country. When a fire accident occurs in a public place, the safety and smoothness of the cable is very important for fire prevention and fire fighting. It can not only win the precious rescue time to the maximum extent, but also grea...

AI Technical Summary

Problems solved by technology

Although mineral insulated fireproof cables have good fire resistance, their manufacturing process is complicated, the production cost is high, the length of production is limited, and the cables are very hard and cannot be bent, the joints are complicated, the construction is very difficult, and it is difficult to be widely used

Although the mica tape wrapping refractory cable has a simple process and unlimited manufacturing length, there is a common disadvantage of the mica tape. After high temperature combustion, the mechanical strength of the mica tape is greatly reduced and becomes brittle. It is easy to pulverize and fall off after being subjected to severe vibration, causing Poor refractory effect

The mica tape wrapping fire-resistant cable has a simple process, but the mechanical strength of the mica tape is greatly reduced after high-temperature combustion, and it becomes brittle. It is easy to pulverize and fall off after being subjected to severe vibration, resulting in poor refractory effect.

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