Effects of NaOH/H2O2/Na2SiO3 Bleaching Pretreatment Method on Wood Dyeing Properties
نویسندگان
چکیده
Bleaching is a common modification method widely used in the industrialization of wood dyeing. can regulate color wood, and it also has great effects on subsequent dyeing properties. In this work, three woods, Ayous, Linden, Poplar, were processed by using NaOH/H2O2/Na2SiO3 bleach pretreatment method. Then, pretreated untreated stained separately means water bath with dyestuffs: blue anthraquinone red yellow double-azo dyestuffs. The study mainly focused effect control properties analyzing difference, staining rate, final rate dyed wood. results as follows: For L* h* values showed increasing tends, while a*, b*, c* decreasing trends. Ayous reached an equilibrium at 3~4 h, but for others, was not obvious. Linden veneers similar to unbleached ones, other less than that original veneer, Poplar veneer veneers, red, decreased 4.54%, 2.91%, 5.45%, 10.75%, 2.66%, 9.55%, respectively. general, made material surface uniform. increased due increase veneers’ permeability. Thus, quickly some test pieces decreased. This work provides scientific support process.
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ژورنال
عنوان ژورنال: Coatings
سال: 2023
ISSN: ['2079-6412']
DOI: https://doi.org/10.3390/coatings13020233