Pure cotton fabric and dyeing method thereof

The invention provides pure cotton fabric and a dyeing method thereof. The dyeing method comprises the following step: carrying out cold pad-batch pretreatment, wherein a pretreatment solution adoptedby the cold pad-batch pretreatment comprises 30g/L to 120g/L of a double-active-group cationic modifier, 6g/L to 40g/L of caustic soda, 0g/L to 15g/L of hydrogen peroxide, 0g/L to 12g/L of water glass and 2g/L to 8g/L of a penetrating agent. The dyeing method can be used for salt-free dyeing of reactive dye, salt does not need to be added, and the washing and dry rubbing stages of the obtained pure cotton fabric are both 4.5. The dyeing method is low in energy consumption and short in process. 本发明提供了一种纯棉织物及其染色方法。该染色方法包括进行冷轧堆前处理的步骤；其中，冷轧堆前处理采用的前处理液中包括：30g/L-120g/L的双活性基阳离子改性剂，6g/L-40g/L的烧碱，0g/L-15g/L的双氧水，0g/L-12g/L的水玻璃，2g/L-8g/L的渗透剂。本发明的染色方法可以用于活性染料的无盐染色，无需加盐，得到的纯棉织物的水洗、干摩级数均为4.5级。本发明的染色方法的能耗低、流程短。