Method for improving polyimide fiber basic dyeing performance
A polyimide fiber, basic dye technology, applied in the direction of dyeing method, fiber treatment, fiber type, etc., can solve the problem of difficulty in dyeing, and achieve the improvement of deep dyeing, good deep dyeing, and dyeing percentage. improved effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0023] The polyimide fibers were treated with 10g / L alkaline catalyst (potassium hydroxide, sodium hydroxide) and a bath ratio of 1:50 at 70°C for 30 minutes, and washed with water. Then dye the fibers before and after treatment with basic dyes. The dyeing process prescription is: the amount of carrier CINDYEDNK is 15% owf, the amount of dye MAXILON Blue SL is 5% owf, the amount of sodium nitrate is 10g / L, pH=3, liquor ratio 1:30. Process conditions: add carrier, sodium nitrate and dye at room temperature, adjust the pH value with formic acid, heat up to 140°C at 1°C / min, keep warm for 60 minutes, then cool down to 70°C at 1°C / min, drain the bath, and wash with water. Then measure the K / S value and color fastness of the dyed fiber, and the results are shown in Table 1.
[0024] Table 1 K / S value and color fastness of fibers before and after carboxylation modification in the presence of basic catalyst
[0025]
[0026] It can be seen from Table 1 that under alkaline conditi...
Embodiment 2
[0028] The polyimide fibers were treated in 10g / L acid catalyst (acetic acid, sulfuric acid) and the treatment solution with a bath ratio of 1:50 at 70°C for 10min, and washed with water. Then dye the fibers before and after treatment with basic dyes. The dyeing process prescription is: the amount of carrier CINDYEDNK is 15% owf, the amount of dye MAXILON Blue SL is 5% owf, the amount of sodium nitrate is 10g / L, pH=3, liquor ratio 1:30. Process conditions: add carrier, sodium nitrate and dye at room temperature, adjust the pH value with formic acid, heat up to 140°C at 1°C / min, keep warm for 60 minutes, then cool down to 70°C at 1°C / min, drain the bath, and wash with water. Then measure the K / S value and color fastness of the dyed fiber, and the results are shown in Table 2.
[0029] K / S value and color fastness of fiber before and after carboxylation modification in the presence of acidic catalyst in table 2
[0030]
[0031] It can be seen from Table 2 that under acidic ...
Embodiment 3
[0033] Effect of Carrier CINDYEDNK Dosage on K / S Value
[0034] In the dye liquor with the dye MAXILON Blue SL concentration 5% owf, sodium nitrate dosage 10g / L, pH=3, liquor ratio 1:30, and carrier CINDYEDNK dosage 0-20%owf, the carboxylation was modified according to the dyeing process conditions in Example 1 After the polyimide fiber was dyed, the K / S value of the dyed sample was measured, and the results are shown in Table 3.
[0035] Table 3 The influence of carrier CINDYEDNK dosage on K / S value
[0036] Carrier CINDYE DNK dosage / %owf K / S 0 19.247 5 20.814 10 21.532 15 22.451 20 22.603
[0037] It can be seen from Table 3 that the K / S value of the dyed sample increases after the carrier is added to the dyeing bath. The carrier plasticizes the fiber, increases the mobility of the fiber macromolecular chain, and relaxes the fiber structure, thereby increasing the free volume of the fiber and increasing the diffusion rate of the dye...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com