Aramid fiber pretreatment liquid and application thereof

A technology of aramid fiber and pre-treatment solution, which is applied in the textile field, can solve the problem that the carrier is difficult to remove, and achieve the effect of reducing the amount of carrier and environmental protection of the dyeing process

Inactive Publication Date: 2019-10-11
SHANDONG ROPE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the carrier is difficult to remove in the high-temperature carrier dyeing method in the prior art, the present invention provides a pretreatment solution for aramid fibers, which has the characteristics of high dyeing rate, less carrier consumption, and easy removal of the carrier.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Dyeing process: aramid fiber pretreatment → washing → dyeing → washing → drying

[0029] The pre-treatment process is as follows: immerse the weighed aramid fiber in the prepared pre-treatment solution, and ultrasonically treat it at 98°C for 60 minutes, wherein, the pre-treatment solution formula: degreaser YM-1107A2g / l, chlorinated Calcium 3g / l, the balance is soft water, bath ratio 1:30.

[0030] Dyeing process: dye solution formula: disperse ruby ​​S-2GL6wt%, sodium chloride 2wt%, dyeing aid DEET30g / l, dyeing conditions: pH value = 5 (adjusted with acetic acid), temperature 130 ° C, time 60 minutes, bath The ratio is 1:30.

[0031] Submerge the dyed aramid fiber in the reducing cleaning solution composed of 2g / L sodium dithionite and 2g / LNaOH, the bath ratio is 1:15, after 15min at 80°C, wash with hot water, cold water, 100-110°C Tumble dry with hot air.

[0032] After dyeing, the K / S value is 28, the wet rubbing fastness is grade 3.5, and the dry rubbing fastnes...

Embodiment 2

[0034] Dyeing process: aramid fiber pretreatment → washing → dyeing → washing → drying

[0035] Pre-treatment process: immerse the weighed aramid fiber in the prepared pre-treatment liquid, and ultrasonically treat it at 90°C for 50 minutes, wherein, the pre-treatment liquid formula: degreasing agent YM-1107A3.5g / l, chlorine Calcium 6g / l, the balance is soft water, bath ratio 1:20.

[0036] Dyeing process: dye solution formula: disperse ruby ​​S-2GL5wt%, sodium chloride 3wt%, dyeing aid DEET40g / l, dyeing conditions: pH value = 4.5 (adjusted with acetic acid), temperature 130 ° C, time 50 minutes, bath The ratio is 1:20.

[0037] Submerge the dyed aramid fiber in the reducing cleaning solution composed of 2g / L sodium dithionite and 2g / LNaOH, the bath ratio is 1:15, after 15min at 80°C, wash with hot water, cold water, 100-110°C hot air drying

[0038] After dyeing, the K / S value is 32, the wet rubbing fastness is grade 4, and the dry rubbing fastness is grade 5.

Embodiment 3

[0040] Dyeing process: aramid fabric pretreatment → washing → dyeing → washing → drying

[0041] Pre-treatment process: immerse the weighed aramid fiber in the prepared pre-treatment liquid, and ultrasonically treat it at 98°C for 60 minutes, wherein, the pre-treatment liquid formula: degreasing agent YM-1107A5g / l, calcium chloride 10g / l, the balance is soft water, the liquor ratio is 1:10.

[0042] Dyeing process, dye solution formula: disperse red 3B 4wt%, sodium chloride 2wt%, dyeing aid DEET 20g / l, dyeing conditions: pH value = 4 (adjusted with acetic acid), temperature 120 ° C, time 40 minutes, liquor ratio 1: 10.

[0043] Submerge the dyed aramid fiber in the reducing cleaning solution composed of 2g / L sodium dithionite and 2g / LNaOH, the bath ratio is 1:15, after 15min treatment at 80°C, hot water washing, cold water washing, 100-110°C hot air drying.

[0044] After dyeing, the K / S value is 25, the wet rubbing fastness is grade 4, and the dry rubbing fastness is grade...

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Abstract

The invention belongs to the textile industry, and particularly relates to an aramid fiber pretreatment liquid and an application thereof. The aramid fiber pretreatment liquid includes 2-5 g / l of a deoiling agent and 3-10 g / l of calcium chloride. The aramid fiber pretreatment liquid has advantages that compared with the existing aramid dyeing method, a pretreatment method by adopting the aramid fiber pretreatment liquid can significantly improve the dye uptake rate of aramid fibers, and the dyeing process is more environmentally friendly.

Description

technical field [0001] The invention belongs to the textile industry, and in particular relates to an aramid fiber pretreatment liquid and its application. Background technique [0002] Aramid fibers are often used in work clothes in some special fields, such as firefighting, aviation and oil field work, due to their excellent properties such as natural flame retardancy and high temperature resistance. However, meta-aramid has high crystallinity and glass transition temperature, so it is difficult to dye. At present, the dyeing methods of aramid fiber mainly include ultra-high temperature 170°C dyeing without carrier and high-temperature carrier dyeing. Ultra-high temperature dyeing at 170°C requires extremely high equipment, and there is no industrial production equipment at this stage. High-temperature carrier dyeing is to add polyethylene alcohol, butyl benzoate, o-phenylphenol, etc. as carriers in the dyeing solution to increase the dyeing rate of dyes on aramid fibers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/16D06P1/44D06P1/673D06P3/26D06P5/10
CPCD06P1/16D06P1/445D06P1/67358D06P3/26D06P5/10
Inventor 张樱花姜润喜邱延平宋炳涛李甜石士超巩亮宋其晶方文青
Owner SHANDONG ROPE TECH CO LTD
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