High-performance fabric self-pressurization carrier dyeing method

The invention relates to a high-performance fabric self-pressurization carrier dyeing method and belongs to the technical field of textile printing and dyeing. According to the method, carbon dioxideand ammonia gas generated by thermal decomposition of ammonium bicarbonate are utilized in the dyeing process of a high-performance fabric, the carbon dioxide enables the pressure intensity in a closed space of a dyeing cup to be increased, the solubility of the ammonia gas to rise and the amount of formed ammonia water to be increased, the polarity of the ammonia water is strong, the surface activity of fiber can be changed, and it is facilitated that the active chlorine generated by the complexation effect of N,N-dimethylacetamide and sodium chloride acts on the high-performance fiber, the hydrogen bonding force among macromolecular chains of the fiber is weakened, and the porosity of the fiber is improved. The N,N-dimethylacetamide has strong polarity under the low temperature dyeing condition of 70-90 DEG C, the dissolving concentration of dye can be effectively improved, the micelle concentration of the dye is reduced, the dye molecules are easy to adsorb and dye the high-performance fabric, and the dyeing efficiency of the high-performance fabric is effectively improved. In addition, the method can achieve a better dyeing effect at a relatively low dyeing temperature, and theproduction cost and the energy consumption are reduced.