A temperature-sensitive cell coat of phase change material, composite inhibitor and preparation method thereof
A technology of phase change materials and inhibitors, which is applied in mining equipment, earthwork drilling, dust prevention, etc. It can solve the problems of poor stability, short resistance life, inability to effectively control spontaneous combustion areas in goafs, etc., and achieve hardness enhancement , prevent the expansion of fire, and inhibit the spontaneous combustion of coal
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[0024] The preparation of the temperature-sensitive cell coat of the phase change material includes the selection of the phase change material for the shell of the cell coat, the enhancement of the strength of the phase change material and the improvement of the ignition point, and the steps of putting frozen inhibitor particles into the mixed cell coat phase change material.
[0025] Among them, the selection of thermosensitive cell coat shell material.
[0026] After comparison and analysis, comparing the physical properties of petrolatum, stearic acid and paraffin, stearic acid and paraffin are selected as phase change materials, and their characteristics are analyzed below.
[0027] Vaseline is a semi-liquid mixture of alkanes or saturated hydrocarbons, also called petrolatum, which is obtained by fractional distillation of petroleum. Its state is between solid and liquid at room temperature; its melting point is 35-50°C.
[0028] The main component of paraffin is solid a...
Embodiment 1
[0041] Table 1: each component percentage of embodiment one
[0042]
[0043] With this component, the resistance rate is 95%, the heat release rate per unit time is reduced by 70%, the ignition point is increased by 124 degrees, and the flame retardancy is greatly enhanced. The compressive strength is significantly enhanced, and the compressive strength of the composite material is hundreds of times higher than that of the stone wall shell which is purely paraffin wax.
Embodiment 2
[0045] Table 2: each component percentage of embodiment two
[0046]
[0047] With this component, the resistance rate is 93%, the heat release rate per unit time is reduced by 60%, the ignition point is increased by 101 degrees, and the flame retardancy is greatly enhanced. The compressive strength is significantly enhanced, and the compressive strength of the composite material is hundreds of times higher than that of the stone wall shell which is purely paraffin wax.
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