Extraction of mulberry leaf natural dyes and method for dyeing silk
A technology of natural dyes and dyeing methods, applied in the field of comprehensive utilization of mulberry leaves and natural dyes for silk fabrics, can solve the problems of color difference in dyed silk, increase cost, increase processing process, etc., achieve good dyeing concentration and tone, prevent color difference, and overcome problems Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0014] Take 1 kg of fresh mulberry leaves, chop them up, boil them with 10 kg of NaOH solution of 5 mol / L for 30 min, filter the residue of mulberry leaves after boiling with 5 kg of NaOH solution of 5 mol / L for 30 min, and combine the two Filtrate, while stirring, dropwise add mass ratio concentration of 95% H 2 SO 4 Until precipitation occurs, stand still for 4 hours, pour off the supernatant, and collect the precipitated mulberry leaf natural dye;
[0015] Get mulberry leaf natural dye 1g, use the Na that concentration is 1mol / L 2 CO 3 Dissolve 50mL of the solution, and then dilute to 500mL with water. Put 1m2 of silk after conventional pretreatment into the dyeing solution for dyeing. The dyeing temperature is 80°C and the time is 50min. After dyeing, the silk material is taken out and fully washed and dried in the shade.
[0016] After measurement, the L value of the dyed silk material is 52, the a* is -100, the b* value is 14, the soaping fastness is 4.5, and the rubb...
Embodiment 2
[0018] Take 1 kg of fresh mulberry leaves, chop them up, boil them with 20 kg of NaOH solution of 5 mol / L for 30 min, filter the residue of mulberry leaves after boiling with 5 kg of NaOH solution of 5 mol / L for 30 min, and combine the two Filtrate, while stirring, dropwise add mass ratio concentration of 95% H 2 SO 4 Until precipitation occurs, stand still for 4 hours, pour off the supernatant, and collect the precipitated mulberry leaf natural dye;
[0019] Get mulberry leaf natural dye 1g, use the Na that concentration is 1mol / L 2 CO 3 Dissolve 50mL of the solution, and then dilute to 500mL with water. Put 1m2 of silk after conventional pretreatment into the dyeing solution for dyeing. The dyeing temperature is 80°C and the time is 50min. After dyeing, the silk material is taken out and fully washed and dried in the shade.
[0020] After measurement, the L value of the dyed silk material is 52, the a* is -110, the b* value is 18, the soaping fastness is 4.5, and the rubb...
Embodiment 3
[0022] Get 1kg of fresh mulberry leaves, chop, and use 30kg of Na with a concentration of 6mol / L 2 CO 3 The solution boiled mulberry leaves for 30min, and the filtered mulberry leaf residue was 6mol / L Na with 5kg concentration. 2 CO 3 The solution was boiled for 30min and then filtered, and the filtrates were combined twice, and while stirring, it was added dropwise that the mass ratio concentration was 95%. 2 SO 4 Until precipitation occurs, stand still for 4 hours, pour off the supernatant, and collect the precipitated mulberry leaf natural dye;
[0023] Get mulberry leaf natural dye 1g, use the Na that concentration is 1mol / L 2 CO 3 Dissolve 50mL of the solution, and then dilute to 500mL with water. Put 1m2 of silk after conventional pretreatment into the dyeing solution for dyeing. The dyeing temperature is 80°C for 50min. After dyeing, the silk material is taken out, washed and dried in the shade.
[0024] After measurement, the L value of the dyed silk material is ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| soaping fastness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More