Views:2 Author:Site Editor Publish Time: 2019-09-02 Origin:Site
The cause and solution of most of the seed shell remaining on the fabric and insufficient whiteness,How to Make a White Fabric.
make a white fabric
At this point, due to its polymer network structure shielding heavy metal ions, water glass can adsorb Fe2+ and seal HOO -, making Fe2+ not catalyzed and inhibiting the formation and decomposition of H00· free radicals.Water glass can also combine with Ca2+ and Mg2+ ions in the bleaching liquid to form highly dispersed magnesium silicate, calcium silicate colloid, which is adsorbed on the surface of the catalyst, making it lose its activity and thus play a stabilizing role.If water glass is bleached in soft water, there is no stabilizing effect, on the contrary, the decomposition of hydrogen peroxide will be accelerated due to the increase of pH value.However, when the content of Fe2+ exceeds the adsorption capacity of water glass, it will weaken the stabilizing effect.For this, although water glass stabilizes the effect to be good, the price is cheap again, but in strong alkali retreat, boil, float one bath method, water glass cannot satisfy above function.Therefore, it is unreasonable to use water glass alone as stabilizer in the prescription.If the water glass and magnesium sulfate and complexing agent are mixed in a certain proportion, it can be suitable for one bath process.
Scouring agent used in other prescription and net lotion, certain requirements can alkali resistance, good permeability in alkali bath, to have emulsification, washing, solubilization and dispersion effect, cloud point, if the quality can not meet the requirements, the same to retreat, boiling and bleaching one bath effect bring certain influence, in short, as long as you select the best hydrogen peroxide stabilizer and scouring agent, penetrating agent, and control the process conditions, properly solve the excessive alkali, activation, and stable relations, a certain can make the refund, boiling and bleaching one bath process to achieve the ideal effect.
In addition, too much water glass, hydrogen peroxide residue, not enough to play the role of bleaching.
It reduces water glass consumption and increases chelating stabilizer.
The concentration of male caustic soda can be increased and the residual rate can be increased.
(4) steam temperature can be increased to 105-110 ℃.
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