• <abbr id="ck0wi"><source id="ck0wi"></source></abbr>
    <li id="ck0wi"></li>
  • <li id="ck0wi"><dl id="ck0wi"></dl></li><button id="ck0wi"><input id="ck0wi"></input></button>
  • <abbr id="ck0wi"></abbr>
  • <li id="ck0wi"><dl id="ck0wi"></dl></li>
  • Home >

    Technology Of Reactive Dye Combined With Dicyandiamide For Fixing Color

    2012/11/13 16:42:00 39

    DicyandiamidePrinted FabricReactive Dyes

     

    In order to study

    Dicyandiamide

    As a catalyst, the influence of the amount of 100g sodium bicarbonate on the printing performance of reactive / neutral dyes was changed. The mass fraction of dicyandiamide was changed to 0.5, 1, 2 and 3% respectively, and the printed cotton knitted fabric was printed after pretreatment.

    Effect of mass fraction of catalyst on printing properties of reactive / neutral dyes in the same paste.


    When the dicyandiamide catalyst was not added, the color depth of printing was only 74.3%; when the mass fraction of dicyandiamide was 0.5%, the color depth of printed fabric increased to 85.6%; however, with the further increase of catalyst mass fraction, the color depth of printing increased, but the range of raising was smaller.

    When the mass fraction of dicyandiamide reaches 3%, the color depth of printing will even decrease. The reason for it needs further study.

    Fig. 1 shows that the dicyandiamide catalyst does have a clear fixation effect on printing of reactive dyes under weak alkaline conditions.

    In practical application, the catalyst mass fraction is 0.5%~1.0%.

    The effect of 2.2 alkali agents on printing properties is that the reactive dyes can react with hydroxyl groups on cellulose fibers to form covalent bonds under alkaline conditions. Therefore, when the mass fraction of dicyandiamide is 1%, the mass fraction of alkali agents is 0.5%, 1%, 2% and 3% respectively. The influence of alkali mass fraction on printing properties is systematically studied.


    In the absence of an alkali agent,

    Printed fabric

    The color depth is only 52.8%. added 0.5% alkali agent, the color yield is obviously improved, the alkali agent has great influence on the dyeing performance of reactive dye printing. When the alkali agent mass fraction reaches 1%, the color yield is close to 90%. However, the quality of the alkali agent continues to increase, and the color yield has no obvious improvement. When the mass fraction reaches 3%, the color yield decreases.

    Therefore, taking into account that the mass fraction of alkali is too common to affect the dye uptake of neutral dyes, the dosage of alkali agent is 1%.

    2.3 effect of steaming time on printing performance.

    In the process of fabric printing, the steaming time has a very important effect on the printing performance. Therefore, under other conditions, when the mass fraction of dicyandiamide is 1% and sodium bicarbonate is 1%, the 10,15,20min. is activated in 101~102 / C, and the K/S value and the amount of color increase are increased with the extension of time.

    When the 20min is steamed, the dye uptake rate has reached 91.6%. Taking into account that the steaming time is too long, the efficiency will be affected. Therefore, the 20min of the reactive / neutral catalytic printing is suitable.


    Fixing effect of neutral dyes.

    The printing fabric was dyed with reactive dye M-3R2.5%, reactive dye M-3BE3.0%, reactive dye M-2GE1.5%, neutral yellow 0.1% and neutral brown 0.5%. The printing fabric was fixed with different concentration of fixing agent RFC. The effect of fixing agent concentration on the color fastness of printing fabric was studied.

    For wet rubbing fastness, even if there is no fixing agent, it can reach more than 4. When the mass concentration of fixing agent RFC reaches 20g/L, the wet rubbing fastness reaches 4~5 level.

    The printing fabric processed by this process has good wet rubbing fastness.

    The fixing agent RFC has obvious effect on cotton color fastness, color fastness and color fastness.


    Use

    reactive dye

    Neutral dye combined with dicyandiamide catalyzed fixation technology can obviously improve the color depth of printing, and reduce the dosage of alkali agent. Under weak alkaline conditions, reactive dyes can be used to dye cotton in the fabric without affecting neutral dye's dyeing on brocade and achieving good printing effect.

    Reactive / neutral dyes with the same slurry catalytic printing technology for cotton brocade printing, the suitable conditions are: catalyst (dicyandiamide) 0.5%~1.0%, alkali agent 1%, steaming time 20min, and the wet rubbing fastness of printed fabric can reach 4 grade.

    The wet rubbing fastness and color fastness of fixing agent RFC were improved when finishing printing fabric.

    • Related reading

    Printing Technology Of Cotton Fabric With Reactive Dyes And Slurry Catalytic Printing

    Material chemical industry
    |
    2012/11/13 15:01:00
    26

    Detection Methods Of Common Allergens In Textiles

    Material chemical industry
    |
    2012/11/13 11:06:00
    23

    Application Of Imprinted Polymers Based On Silicon Materials In Textiles

    Material chemical industry
    |
    2012/11/12 17:08:00
    25

    Common Allergenic Substances In Textiles And Their Sensitization Pathways

    Material chemical industry
    |
    2012/11/12 16:02:00
    20

    Preparation Of Molecularly Imprinted Polymers Using Spherical Silica As Substrate

    Material chemical industry
    |
    2012/11/12 11:37:00
    28
    Read the next article

    冬季來臨,羽絨服面料迎來銷售時機

    冬季來臨,羽絨服面料迎來銷售時機,麂皮絨不論是經麂皮還是緯麂皮市場活躍,都是秋冬季節的適銷品種,平紋里料價格均有2分/米左右的下跌,面料成交量總體變化不大,價格走勢趨穩狀態,薄型產品仍然平淡。

    主站蜘蛛池模板: 欧美三级韩国三级日本播放| 精品一久久香蕉国产二月| 奇米在线777| 亚洲中文字幕久在线| 蜜芽忘忧草二区老狼果冻传媒| 奇米影视77777| 久久精品国产亚洲精品| 穿透明白衬衫喷奶水在线播放| 国产精品乱码在线观看| 上原亚衣一区二区在线观看| 欧美性大战久久久久久| 四虎www成人影院| 269tv四季直播苹果下载| 成年18网站免费视频网站 | www.国产成人| 最近中文字幕在线中文高清版| 公侵犯玩弄漂亮人妻优| 欧美成人免费tv在线播放| 小小视频日本高清完整版| 亚洲videos| 看免费的黄色片| 国产好痛疼轻点好爽的视频| 99精品众筹模特私拍在线| 色欲香天天天综合网站| 国产鲁鲁视频在线观看| 丰满人妻熟妇乱又伦精品视| 欧美精品在线免费观看| 国产男女爽爽爽免费视频| 一本久久综合亚洲鲁鲁五月天| 欧美1区2区3区| 伊伊人成亚洲综合人网7777| 500福利视频导航| 成a人片亚洲日本久久| 久热香蕉精品视频在线播放| 男人j桶进女人p无遮挡免费 | 色一情一乱一伦一区二区三区日本 | 色综合久久中文字幕无码| 国产青草亚洲香蕉精品久久| 中文国产成人久久精品小说 | 国产精品一区二区欧美视频| yellow字幕网在线|