WO2014121552A1 - 一种在套染纺织品上产生彩色花纹的光触媒色拔方法 - Google Patents

一种在套染纺织品上产生彩色花纹的光触媒色拔方法 Download PDF

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Publication number
WO2014121552A1
WO2014121552A1 PCT/CN2013/073615 CN2013073615W WO2014121552A1 WO 2014121552 A1 WO2014121552 A1 WO 2014121552A1 CN 2013073615 W CN2013073615 W CN 2013073615W WO 2014121552 A1 WO2014121552 A1 WO 2014121552A1
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Prior art keywords
textile
pattern
dye
color
photocatalyst
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English (en)
French (fr)
Inventor
龙家杰
毕潇平
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Suzhou University
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Suzhou University
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Priority to US14/758,775 priority Critical patent/US9797090B2/en
Publication of WO2014121552A1 publication Critical patent/WO2014121552A1/zh
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2005—Treatments with alpha, beta, gamma or other rays, e.g. stimulated rays
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/15—Locally discharging the dyes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/15—Locally discharging the dyes
    • D06P5/153—Locally discharging the dyes with oxidants
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/15—Locally discharging the dyes
    • D06P5/155—Locally discharging the dyes with reductants
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/15—Locally discharging the dyes
    • D06P5/158—Locally discharging the dyes with other compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2011—Application of vibrations, pulses or waves for non-thermic purposes

Definitions

  • the invention relates to textile dyeing and finishing technology, in particular to a photocatalyst color drawing method for producing colored patterns on dyed textiles, which uses a light source to initiate a reducing agent, an oxidizing agent or a semiconductor nano material to form a colored pattern on the dyed textile.
  • the traditional printing and dyeing processing method not only has a long process flow, but also has complicated processes, affects many product factors, is difficult to control, and requires a large amount of chemicals and additives, consumes a large amount of water and energy, and generates a large amount of waste water and pollutants. It poses a huge challenge to ecology and environmental protection. At the same time, it directly leads to higher production costs of these traditional methods or processes. Therefore, it provides a new method or process that is fast, efficient, green and environmentally friendly, and is environmentally friendly. It replaces the traditional process, obtains colored patterns on textiles, reduces energy consumption, reduces the use of conventional chemicals, promotes clean production, and realizes textiles. It is of great significance for printing and dyeing enterprises to save energy, reduce consumption and reduce emissions.
  • the present invention provides a photocatalyst color drawing method which is simple in equipment, simple in energy saving and clean production, and can produce a color pattern on the dyed textile under normal temperature and normal pressure.
  • the hollow pattern pattern and the color textile are closely adhered to each other, or fixed on one side or both sides of the dyed textile, and a photosensitive material is applied on the colored textile at the pattern hollow, and the photosensitive material is dissolved or dispersed.
  • a solution of a photosensitizer, a sol or a white syrup The concentration of the agent is 0. 10 g L - 1 ⁇ 10. 00 g L - p H value is 2 ⁇ 1 2 ; the photosensitizer is a reducing agent, an oxidizing agent, a semiconductor nano material, or any combination thereof;
  • the obtained textile is washed with water at room temperature, dried or dried to obtain a colored textile having a colored pattern.
  • the flower dyes of the present invention are hydrazine, steroid and heterocyclic vat dyes, or correspondingly soluble products; the specific flower dyes may be reduced golden RK or reduced violet 2 R dyes.
  • the ground color dye has a parent structure which is an azo or heterocyclic dye which is highly sensitive to photocatalysis; the specific ground color dye can be direct lake blue 5B, direct jujube GB dye, direct fast blue color GB dye Or direct dark green NB dye.
  • the photosensitizer is potassium persulfate.
  • Methods of applying a photosensitive material to a sleeved textile at a pattern cutout include spray coating, squeegeeing, mechanical or manual coating.
  • the light source is an ultraviolet or visible light source and has a power of 5 to 500 W.
  • the textile is a cellulose or a modified textile thereof.
  • the hollow pattern pattern is obtained by forming a hollow pattern by using a mechanical or manual engraving or a laser etching method for a thin material or film that is opaque.
  • the technical solution of the present invention has the following advantages: Since the photocatalyst technology is used to cause the photosensitizer to decompose, generate or release a highly active substance, the photocatalytic sensitive coloring dye precursor structure on the textile is destroyed. The color-removing effect is retained; and the color of the flower dye is retained and exhibited at the photocatalyst treatment, so that the textile obtains a colored pattern different from the color of the color.
  • the implementation conditions and the process are simple, the pH value is wide, and the control is easy, and the production efficiency is high; the traditional color paste or the discharge pulp is not needed, and the complicated processes such as steaming, desizing and washing are omitted, thereby eliminating the tradition.
  • the large amount of drugs and waste liquids required for the discharge printing process reduce the production cost, and have significant advantages such as energy saving, emission reduction and emission reduction. It has a very broad application in the clean production of the textile printing and dyeing industry.
  • FIG. 1 is a schematic diagram of the structure of the batch reactor of the textile pattern pattern whitening provided by the embodiment of the present invention Figure
  • Figure 2 is a comparison chart of K/S values of the direct/reduced dye overdyed cotton fabric before and after photocatalytic treatment in Example 1;
  • Figure 3 is a rendering of the pattern of the Beijing Olympic Games logo in Example 2 (the pattern is golden yellow and the background is reddish brown);
  • Figure 4 is an effect diagram of the pattern of the embodiment 3 for the Guangzhou Asian Games logo (the pattern is yellow and the background is green);
  • Figure 5 is a diagram showing the effect of the pattern of the embodiment 4 being the trademark of the apple (the pattern is purple and the background is navy);
  • FIG. 1 1, photocatalyst processing unit; 2 and 7, light source; 3, vertical illumination; 4 and 6, a flower pattern with a hollow pattern; 5, colored textiles.
  • the dyeing materials involved in the examples are as follows:
  • Color dyes Reducing golden RK and reducing violet 2R dyes are conventional commercial products; ground color dyes: direct lake blue 5B, direct jujube GB dye, direct fast blue color GB dye and direct dark green NB dye are conventional commercial products; Photosensitive material: Potassium persulfate (K 2 S 2 0 8 ) is a conventional commercial product.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the embodiment provides a photocatalyst color drawing method for producing a colored pattern on a textile, comprising the following steps:
  • the textile is subjected to a base dyeing process according to a conventional dyeing method using a selected flower dye.
  • the textile is a cotton fabric (8 cm X 20 cm), and the processing conditions of the conventional flower dye dyeing process are: 2.5% (0.
  • the sample was taken out, and the color was oxidized in 32 gas, then washed with cold water and soaped (2.0 g L- 1 soap, 2.0 g L- 1 soda ash, 95 V, treated for 10 min, bath ratio 1:30), finally washed with water and dried to obtain an anthocyanid dyed fabric.
  • the above-mentioned dyed textile is over-dyed by using a ground dye.
  • the dyed fabric obtained by the above-mentioned color dye is further dyed with a ground dye, and the process conditions of the dye dyeing of the ground dye are: 1.0% (0.
  • FIG. 1 it is a schematic structural view of a photocatalyst color drawing reactor for producing a colored pattern on a dyed textile provided by the present embodiment; at a position directly above and/or directly below the reactor processing unit 1 The lamp source 2 and/or 7 are installed. In this embodiment, an 8 W low-pressure mercury lamp mounted directly above the reactor is used as the ultraviolet light source 2.
  • the opaque thin material or film is used as the bottom plate, and the desired pattern is mechanically or manually engraved, or laser etched to form a hollow pattern on the bottom plate to obtain a pattern plate.
  • the pattern plates 4 or/and 6 with the hollow pattern are tightly bonded to the dyed textile 5, or are fixed to one side or both sides of the dyed textile 5, and in this embodiment, the pattern plate 4 is fixed on the upper side of the fabric. They were placed in the reactor in the order shown in Figure 1, and the source light was well illuminated to the dyed textile at the cutout of the pattern. Then, a solution of a photosensitive substance having a concentration of 8.0 g L - 1 K 2 S 2 0 8 and a pH of 3 was sprayed on the fabric of the pattern stencil by solution spraying. Subsequently, the light source was turned on, the temperature was kept at 40 ° C, and the dyed cotton fabric was subjected to a photocatalytic color drawing treatment for 75 minutes.
  • the photocatalyst color-treated cotton fabric having the color pattern provided in the present embodiment was subjected to the fabric surface color depth value (K/S) and the fabric strength test, and compared with the pre-treatment, the results are as follows.
  • FIG. 2 it is a graph showing the change of color and surface color depth of the pattern portion before and after the photo-catalyst color treatment of the direct/reduced dye-dyed cotton fabric by the method of the present invention in the present embodiment; Fig. 2: Curve 1 Before the photocatalyst treatment; curve 2 is after the photocatalyst treatment; as can be seen from Fig.
  • the maximum absorption wavelength of the direct lake blue 5B in the pre-treatment dyeing dye is 600 ⁇ ! In the range of ⁇ 675nm, the maximum absorption wavelength of the reduced golden RK is 425 ⁇ ! ⁇ 475nm range.
  • the absorption peak of the overprinted ground color dye directly at the 635 nm disappears due to the ultraviolet light and the photosensitive material, indicating that the ground color dye matrix structure has been used. Completely destroys the color.
  • Figure 2 shows that at 425 ⁇ ! The wavelength range of ⁇ 475 nm still has a high absorption peak, indicating that the flower-reducing dye obtained by the method of the present invention has a relatively good retention.
  • the absorption peak position did not shift or change, which also indicated that the parent structure of the dye and its color were not affected, so that the color pattern of the set fabric was well expressed. Therefore, the method of the present invention can effectively achieve the color pattern on the dyed textile.
  • Table 1 shows the radial strength changes of the fabric of the direct/reduced dye overdyed cotton fabric after photochromic color treatment.
  • This embodiment provides a photocatalyst color drawing method for producing a colored pattern on a textile, and the other steps of the method are the same as those in the first embodiment.
  • the color dyeing dye in step 2 is 0.5% (omf) direct reddish GB dye; the pattern in step 3 is the Beijing Olympics icon; in step 3, the cotton dyed fabric is treated for 35 minutes, and the ambient temperature is 60. °C. The results obtained are shown in Figure 3.
  • This embodiment provides a photocatalytic color drawing method for producing a colored pattern on a textile, and the other steps of the method are the same as those in the first embodiment.
  • 5% ( omf ) The color dyeing dye is 0. 5% ( omf ) Direct light blue color GB dye; Step 3
  • the flower pattern is the Guangzhou Asian Games logo; in step 3, the dyed cotton fabric is treated for 60 minutes, and the ambient temperature is 30 °C. The results obtained are shown in Figure 4.
  • This embodiment provides a photocatalytic color drawing method for producing a colored pattern on a textile, and the other steps of the method are the same as those in the first embodiment.
  • the dyeing dye in step 1 is 0.5% (omf) to reduce the violet 2R dye; in step 2, the ground color dye is 0. 5% (omf) direct dark green NB dye; the pattern pattern in step 3 It is the trademark of Apple; in step 3, the dyed cotton fabric is treated for 20 minutes, and the ambient temperature is 10 °C. The results obtained are shown in Figure 5.
  • the method of the present invention can achieve complete destruction and decolorization of the dyed ground color dye, and can maintain the maternal structure and color of the flower dye on the fiber, and finally A very ideal color pattern can be obtained on the fabric, the pattern is clear, the contour is fine, the cloth surface is refreshing, the color is pure, and the traditional printing effect is achieved.
  • the radial strength retention rate of the treated fabric is also maintained in the range of 75 ⁇ 85%.
  • the invention adopts the technical scheme of photochemical reaction, and can realize various patterns on various ground dye-dyed textiles.
  • the method of the invention does not need printing paste and expensive printing equipment, and does not need traditional printing processes such as steaming, washing and desizing, and has simple equipment and process, short process and no waste water discharge, and is a short process and a clean production process, and has a wide range. Application prospects.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coloring (AREA)

Abstract

本发明公开了一种在纺织品上产生彩色花纹的光触媒色拔方法。分别用花色染料和地色染料对纺织品进行染色和套染处理；将图案制成镂空花纹图案花版，在花纹镂空处的套染纺织品上施加光敏物质，利用光触媒色拔方法，使地色染料实现局部消色，而花色染料得以较好保留，达到在纺织品上产生彩色花纹图案的效果。本发明工艺及设备简单、工艺流程短、易于控制、适应性广，省去了印花糊料及昂贵的印花设备，以及传统印花等繁琐工序；同时还避免了传统印花中大量药品的使用和废液排放，有利于降低生产成本，具有节能降耗减排和清洁生产等显著优点，在纺织印染行业的清洁生产中具有非常广阔的应用前景。

Description

一种在套染纺织品上产生彩色花纹的光触媒色拔方法
技术领域
本发明涉及纺织染整技术， 特别涉及一种在套染纺织品上产生彩色花 纹的光触媒色拔方法， 它以光源引发还原剂、 氧化剂或半导体纳米材料， 在 套染纺织品上形成彩色花纹图案。
背景技术
长期以来， 具有彩色花纹图案的纺织品， 以其丰富艳丽的色彩， 细致和 逼真的花型图案， 深受广大消费者的喜爱。 同时由于其附加值高， 经济效益 可观， 也常得到生产企业青睐。 通常在纺织品上获得彩色花纹图案的传统印 染加工方法主要有直接印花和防拔染印花等。 其中直接印花主要适用于在白 底或浅底色上产生彩色花纹图案， 而防拔染印花则可用于在深底色上获得浅 色花纹图案等。
传统的印染加工方法， 不但工艺流程长， 工序复杂， 影响产品因素多， 条件不易控制， 而且需采用大量的化学药品和助剂， 消耗大量的水和能源， 并产生大量的废水和污染物， 对生态和环境保护造成了巨大的挑战。 同时也 直接导致了这些传统方法或工艺的生产成本较高。 因而， 提供快捷高效、 绿色生态， 并利于环境保护的新型方法或工艺， 替代传统工艺， 在纺织品上获得彩色花纹图案的同时， 降低能源消耗， 减少 常规化学品的使用， 推行清洁生产， 实现纺织印染企业的节能降耗减排等， 具有非常重要的意义。
发明内容
为了克服现有技术存在的不足， 本发明提供一种设备及工艺简单、 具节 能减排和清洁生产特点， 并能于常温常压下在套染纺织品上产生彩色花纹图 案的光触媒色拔方法。
实现本发明目的所采用的技术方案主要包括如下步骤：
1、 用花色染料对纺织品进行染色加工， 得到染色纺织品；
2、 用地色染料对所述的染色纺织品进行套染， 得到套色纺织品；
3、 将镂空花纹图案花版与套色纺织品紧密贴合， 或固定在套染纺织品 的一侧或两侧， 在花纹镂空处的套色纺织品上施加光敏物质， 所述的光敏物 质为溶解或分散有光敏剂的溶液、 溶胶或白浆中的一种； 光敏物质中， 光敏 剂的浓度为 0. 10 g L―1〜 10. 00 g L— p H值为 2〜1 2 ; 所述的光敏剂为还原 齐 U、 氧化剂、 半导体纳米材料， 或它们的任意组合；
4、 置于配有光源的密闭容器中， 开启光源后光源光线通过图案花版的 镂空花纹垂直均匀地照射到套色纺织品上， 在温度为 5 °C〜70 °C的条件下进 行光化学反应处理， 处理时间为 1〜1 20 分钟， 得到不同于套染纺织品色泽 的单面或双面彩色花纹的纺织品；
5、 将得到的纺织品在室温条件下进行水洗， 晾干或烘干后得到一种具 有彩色花型图案的有色纺织品。
本发明所述的花色染料为蒽醌、 靛族及杂环类还原染料， 或所对应的暂 溶性产品； 具体的花色染料可以为还原金黄 RK或还原紫 2 R染料。 所述的地色 染料， 其母体结构为对光催化敏感性强的偶氮或杂环类染料； 具体的地色染 料可以为直接湖蓝 5B、 直接枣红 GB染料、 直接耐晒翠蓝 GB染料或直接墨绿 NB 染料。 所述的光敏剂为过硫酸钾。
在花纹镂空处的套色纺织品上施加光敏物质的方法包括用喷头喷涂、刮 印、 机械或人工涂敷。
所述的光源为紫外或可见光光源， 功率为 5〜500W。
所述的纺织品为纤维素类或其改性的纺织品。
所述的镂空花纹图案花版为将不透光的薄型材质或薄膜， 采用机械或手 工雕刻， 或激光刻蚀方法， 形成镂空花纹图案得到。
与现有技术相比，本发明技术方案具有以下优点： 由于采用光触媒技术 促使光敏剂进行分解、 产生或释放出高活性物质， 对纺织品上对光催化敏感 的地色染料母体结构实现破坏， 达到消色效果； 而在光触媒处理处保留并呈 现出花色染料的色泽， 从而使纺织品获得不同于套色后的彩色花纹图案。 其 实施条件及工艺简单、 pH值适应范围广、 且易于控制， 生产效率高； 无需使 用传统色浆或拔染浆， 且省去了蒸化、 退浆水洗等繁琐工序， 从而省去了传 统拔染印花工艺中所需的大量药品及废液排放， 降低了生产成本， 具有节能 降耗减排等显著优点， 在纺织印染行业的清洁生产中具有非常广阔的应用前 附图说明
1 是本发明实施例提供的纺织品花纹图案拔白处理间歇式反应器结构示意 图；
图 2是实施例 1 中直接 /还原染料套染棉织物光触媒处理前后的 K/S值 曲线比较图；
图 3是实施例 2 图案为北京奥运会标志的效果图 （花纹图案为金黄色， 底色为红棕色）；
图 4是实施例 3 图案为广州亚运会标志的效果图 （花纹图案为黄色， 底 色为绿色）；
图 5是实施例 4图案为苹果商标的效果图 （花纹图案为紫色， 底色为藏 青）；
图 1 中： 1、 光触媒处理单元； 2和 7、 光源； 3、 垂直照射光； 4和 6、 含有镂空花纹图案的花版； 5、 有色纺织品。
具体实施方式
下面结合附图及实施例对本发明作进一步描述：
实施例中所涉及到的染化料如下：
花色染色染料： 还原金黄 RK和还原紫 2R染料为常规市售产品； 地色染色染料： 直接湖蓝 5B、 直接枣红 GB 染料、 直接耐晒翠蓝 GB 染 料和直接墨绿 NB染料为常规市售产品； 光敏物质： 过硫酸钾 （K2S208 ) 为常规市售产品。
实施例一：
本实施例提供一种在纺织品上产生彩色花纹的光触媒色拔方法， 包括如 下步骤：
1、采用经选择的花色染料按照常规染色法对纺织品进行打底染色加工， 在本实施例中， 纺织品为棉织物 （8cmX20cm) ， 其常规花色染料染色的加 工工艺条件为： 2.5% ( 0. m. f. ) 还原金黄 RK染料， 20.0g L— 1氯化钠， 7.5 g L— 1 烧碱， 10.0 g L— 1保险粉， 0.2 g L— 1太古油， 浴比 1:50; 还原金黄 RK染料采 用干缸法还原法， 将称量染料放于烧杯中， 加数滴太古油调成浆状， 用少量 去离子水稀释， 加入 2/3量的烧碱、 保险粉， 再加水使染浴为染液总量的 1/4， 搅拌并升温至 50°C， 还原处理为 10~15min， 然后加入所需染液总量 3/4的水 及剩余 1/3的烧碱、 保险粉， 并在 50°C条件下搅拌均匀得到染料隐色体染浴； 将润湿的丝光漂白棉布入染， 并在入染 15min后加入 1/2量食盐， 续染 15min 后冉加剩余 1/2量食盐， 冉续染 15min， 染色完毕后取出试样， 32气中氧化显 色， 然后经冷水洗、 皂煮（2.0g L— 1皂片、 2.0g L— 1纯碱、 95 V， 处理 10min， 浴比 1:30)， 最后经水洗、 烘干， 得到花色染料染色织物。
2、 采用地色染料对上述染色纺织品进行套染， 在本实施例中， 将上述 所得花色染料染色织物再采用地色染料进行套染， 其地色染料套染染色的工 艺条件为： 1.0% ( 0. m. f. ) 直接湖蓝 5B染料， 20.0g L— 1氯化钠， 0.2 g L— 1 平平加 0， 浴比 1 : 50; 取所需地色染色和平平加 0配制成染色， 并将润湿的丝 光漂白棉布在 40°C入染， 然后染浴在 15min内逐渐升温至 90°C， 保温染色 15min后加入 1/2量食盐， 并续染 15min后加入剩余的 1/2量食盐， 再续染 15min 后逐渐降温至 50°C， 最后取出试样经冷水洗净， 烘干得套色织物。
3、 参见附图 1， 它是本实施例提供的在套染纺织品上产生彩色花纹图 案的光触媒色拔反应器的结构示意图； 在反应器处理单元 1 内的正上方及 / 或正下方适当位置安装灯源 2 和 /或 7， 本实施例以反应器正上方安装的 1 只 8 W低压汞灯为紫外光源 2。
以不透光的薄型材质或薄膜为底板，将所需得到的图案采用机械或手工 雕刻， 或激光刻蚀方法， 在底板上形成镂空花纹图案， 得到图案花版。
将带有镂空花纹的图案花版 4或 /和 6与染色纺织品 5紧密结合， 或固 定在染色纺织品 5的一侧或两侧， 本实施例中采用图案花版 4固定于织物的 上侧， 并将它们按附图 1 中顺序置于反应器之中， 且使光源光线良好照射到 花版图案镂空处的染色纺织品。然后采用溶液喷涂的方式，将浓度为 8.0 g L— 1 K2S208、 pH值为 3 的光敏物质溶液喷涂于图案花版镂空处的织物上。 随后开 启光源， 保持温度 40°C， 对染色棉织物进行 75min光触媒色拔处理。
4、 将经过光触媒色拔处理的纺织品取出后在室温条件下经水洗晾干或 烘干， 得到在套染纺织品上产生的彩色花纹图案。
将本实施例提供的具有彩色花纹的光触媒色拔处理棉织物进行织物表 面色深值 （K/S) 和织物强力测试， 并与处理前对比， 其结果如下。
1、 光触媒色拔处理织物花纹部分的表面色深值（K/S)测定
采用本发明方法处理前后的织物表面色深值在 UltraScan PRO型测色配 色仪 （美国 HunterLab 公司） 上测定， 采用 D65光源和 10° 视角， 选取 3 个不同的位置测量， 然后取其平均值作为该织物表面色深值。 参见附图 2， 它是本实施例中采用本发明方法对经直接 /还原染料套染 棉织物光触媒色拔处理前后， 花纹部位的颜色及其表面色深值变化图； 图 2 中： 曲线 1为光触媒处理前； 曲线 2为光触媒处理后； 由图 2可以看出， 处 理前套色染色染料中直接湖蓝 5B的最大吸收波长在 600ηπ！〜 675nm范围内， 还原金黄 RK的最大吸收波长在 425ηπ！〜 475nm范围。 而经本发明方法进行光 触媒色拔处理时， 由于在紫外光及光敏物质作用下， 套染的地色染料直接湖 蓝 5B在 635nm处的吸收峰消失， 表明采用的地色染料母体结构已经被完全 破坏消色。 同时附图 2 显示， 在 425ηπ！〜 475nm波长范围， 仍然具有较高的 吸收峰， 表明经本发明方法处理得到的花纹部位， 其花色还原染料得到了较 完好的保留。 同时其吸收峰位未发生偏移或变化， 也表明染料的母体结构， 以及其颜色未受到影响， 从而使套然织物的彩色花纹图案得到了良好表现。 因而本发明方法可有效实现在套染纺织品上获得彩色花纹图案。
2、 织物强力的测量
在 YG026B型电子织物强力机上， 按 GB / T 3923. 1 — 1997标准， 采用 条样法对织物断裂强力进行测量。 表 1是本实施例采用本发明方法对直接 / 还原染料套染棉织物处理后织物的断裂强力保留率测试结果。 其中织物的强 力保留率按下式计算：
Hffi ^ asg * 处理后织物的断裂强力 i vw
Figure imgf000007_0001
= / π .. „,r;;?ll p , χ ΐοο%
套染织物的断裂强力
表 1为直接 /还原染料套染棉织物经光触媒色拔处理后的织物径向强 力变化。
表 1
光敏拔白剂 织物径向强力保留率
(%)
套染棉织物
过硫酸钾 （K2 S208 ) 85. 4 由表 1可知， 经过本发明方法处理后， 带彩色花纹图案织物的径向强力出现一定降 低。 这是由于紫外光及光敏物质本身具有氧化能力， 从而导致了织物强力的损失。 因而 适当控制光源功率、 光敏剂用量， 以及处理时间等， 则可缓减织物纤维的损伤， 并减少 工艺因素对其强力的影响。 实施例 2:
本实施例提供一种在纺织品上产生彩色花纹的光触媒色拔方法， 该方法的其 它步骤同实施例 1。 其中步骤 2中地色套染染料为 0. 5% ( o. m. f. )直接枣红 GB染料； 步 骤 3中的花版图案为北京奥运会图标； 步骤 3中对套染棉织物进行 35min处理， 环境温 度为 60°C。 所得结果参见附图 3。
实施例 3:
本实施例提供一种在纺织品上产生彩色花纹的光触媒色拔方法， 该方法的其它步 骤同实施例 1。 其中步骤 1中花色打底染色染料为 0. 5% ( o. m. f. )还原金黄 RK染料； 步 骤 2中地色套染染料为 0. 5% ( o. m. f. ) 直接耐晒翠蓝 GB染料； 步骤 3中的花版图案为 广州亚运会标志； 步骤 3中对套染棉织物进行 60min处理， 环境温度为 30°C。 所得结 果如图 4所示。
实施例 4:
本实施例提供一种在纺织品上产生彩色花纹的光触媒色拔方法， 该方法的其它步 骤同实施例 1。 其中步骤 1中花色打底染色染料为 0. 5% ( o. m. f. )还原紫 2R染料； 步骤 2中地色套染染料为 0. 5% ( o. m. f. ) 直接墨绿 NB染料； 步骤 3中的花版图案为苹果商 标； 步骤 3中对套染棉织物进行 20min处理， 环境温度为 10°C。 所得结果如图 5所示。
从附图 3、 4和 5可以看出， 利用本发明方法可实现对套染的地色染料 进行完全破坏消色， 并可使纤维上的花色染料母体结构及其色泽保持良好， 且最终在织物上可以获得非常理想的彩色花纹图案， 其图案花型清晰， 轮廓 精细， 布面清爽， 色光纯真， 并达到了传统印花的效果。 同时， 根据套染地 色染料结构、 色泽深度， 以及其光化学反应条件不同， 其处理后织物的径向 强力保留率也保持在 75〜85%的较好范围。
本发明采用光化学反应的技术方案，可在各种地色染料套染纺织品上实 现各种各样的花纹图案。 本发明方法无需印花糊料及昂贵的印花设备， 无需 汽蒸、 水洗退浆等传统印花工艺， 其设备及工艺简单， 流程短， 无废水排放， 是一种短流程和清洁生产工艺， 具有广阔的应用前景。

Claims

权 利 要 求 书
1. 一种在套染纺织品上产生彩色花纹的光触媒色拔方法， 其特征在于 包括如下步骤：
( 1 ) 用花色染料对纺织品进行染色加工， 得到染色纺织品；
( 2 ) 用地色染料对所述的染色纺织品进行套染， 得到套色纺织品；
( 3 ) 将镂空花纹图案花版与套色纺织品紧密贴合， 或固定在套染纺织 品的一侧或两侧， 在花纹镂空处的套色纺织品上施加光敏物质， 所述的光敏 物质为溶解或分散有光敏剂的溶液、 溶胶或白浆中的一种； 光敏物质中， 光 敏剂的浓度为 0. 10 g L―1〜 10. 00 g L— pH值为 2〜12； 所述的光敏剂为还 原剂、 氧化剂、 半导体纳米材料， 或它们的任意组合；
( 4 ) 置于配有光源的密闭容器中， 开启光源后光源光线通过图案花版 的镂空花纹垂直均匀地照射到套色纺织品上， 在温度为 5 °C〜70 °C的条件下 进行光化学反应处理， 处理时间为 1〜1 20 分钟， 得到不同于套染纺织品色 泽的单面或双面彩色花纹的纺织品；
( 5 ) 将得到的纺织品在室温条件下进行水洗， 晾干或烘干后得到一种 具有彩色花型图案的有色纺织品。
2. 根据权利要求 1 所述的一种在套染纺织品上产生彩色花纹的光触媒 色拔方法， 其特征在于： 所述的花色染料为蒽醌、 靛族及杂环类还原染料， 或所对应的暂溶性产品。
3. 根据权利要求 1 或 2所述的一种在套染纺织品上产生彩色花纹的光 触媒色拔方法， 其特征在于： 所述的花色染料为还原金黄 RK或还原紫 2R。
4. 根据权利要求 1 所述的一种在套染纺织品上产生彩色花纹的光触媒 色拔方法， 其特征在于： 所述的地色染料， 其母体结构为对光催化敏感性强 的偶氮或杂环类染料。
5. 根据权利要求 1 或 4所述的一种在套染纺织品上产生彩色花纹的光 触媒色拔方法， 其特征在于： 所述的地色染料为直接湖蓝 5B、 直接枣红 GB、 直接耐晒翠蓝 GB或直接墨绿 NB。
6. 根据权利要求 1 所述的一种在套染纺织品上产生彩色花纹的光触媒 色拔方法， 其特征在于： 所述的光敏剂为过硫酸钾。
7. 根据权利要求 1 所述的一种在套染纺织品上产生彩色花纹的光触媒 色拔方法， 其特征在于： 在花纹镂空处的套色纺织品上施加光敏物质的方法 包括用喷头喷涂、 刮印、 机械或人工涂敷。
8. 根据权利要求 1 所述的一种在套染纺织品上产生彩色花纹的光触媒 色拔方法， 其特征在于： 所述的光源为紫外或可见光光源， 功率为 5〜500W。
9. 根据权利要求 1 所述的一种在套染纺织品上产生彩色花纹的光触媒 色拔方法， 其特征在于： 所述的纺织品为纤维素类或其改性的纺织品。
10. 根据权利要求 1所述的一种在套染纺织品上产生彩色花纹的光触媒 色拔方法， 其特征在于： 所述的镂空花纹图案花版为将不透光的薄型材质或 薄膜， 采用机械或手工雕刻， 或激光刻蚀方法， 形成镂空花纹图案得到。
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