When sodium hydroxide concentration must be, hydrogen peroxide decomposition rate increased with the increase of concentration Gal.When hydrogen peroxide concentration must, with the increase of concentration of sodium hydroxide, hydrogen peroxide decomposition speed increase.Under neutral conditions, therefore, the use of hydrogen peroxide to degumming experiment materials or bleaching process, the temperature is not lower than 70 ° C is advisable.
Under alkaline conditions, the use of hydrogen peroxide on ramie degumming processing, the concentration of hydrogen peroxide, it is better to not less than 6 g/L sodium hydroxide concentration is 2-4% is preferred.In the process of heating up,palm oil plant(http://www.palmmill.com) add ramie degumming concentrate when sodium percarbonate YuanMa after decomposition of sodium percarbonate speed greater than when not in ramie YuanMa decomposition speed.
This is because the ramie YuanMa contains more impurities such as dust, metal, these impurities will promote the invalid decomposition in the hydrogen peroxide;At the same time, the colloid have function of sodium percarbonate with YuanMa, cause in the ramie YuanMa after decomposition of sodium percarbonate speed greater than when not in ramie YuanMa decomposition speed.In addition, in the process of heating up, not in the ramie degumming concentrate when sodium percarbonate YuanMa, sodium percarbonate under the condition of temperature below 80 ° C to maintain relatively stable state.
When the temperature is from 80 ° C to heat up to 90 ° C, in the process of sodium percarbonate significant decomposition phenomenon can occur.However, sodium percarbonate add ramie degumming yuanye YuanMa, no matter how temperature changes, threshing station (http://www.palmmill.com/Products/prob/
)sodium percarbonate occur relatively apparent breakdown phenomenon.And, when the temperature of 90 ° C, keep constant temperature, 90 min after sodium percarbonate degumming concentrate in...