| 简介 |
The present invention relates to a black cotton insulation material, and more specifically, to a black cotton insulation material that allows rare earth rocks to be added together to the rock surface to produce a new form of black cotton that is entirely black, and forms it into an insulation material to increase the thermal insulation performance and processability. According to the black cotton insulation material formed as a preferred embodiment of the present invention, the thermal conductivity of the rock cotton fiber material is 0.020 Kcal / mh ° C. Then the thermal insulation is high, and the thermal conductivity is very low, so that the fire door can be lightly fabricated, and it has a weight similar to that of the rock cotton fiber, but in view of the thermal conductivity, it is possible to perform as much as possible with a thickness thinner than the rock cotton fiber material, so that the fire door is light, and the effect is such that the fire door is light. |
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