Method for scouring and bleaching cotton fabric in gaseous phase by utilizing ozone

A technology of cotton fabric and ozone, which is applied to plant fiber, textiles, papermaking, and dry-cleaning fiber products. It can solve the problems of many chemical additives, large fiber damage, and large energy consumption, and achieve stable performance indicators, not easy to yellow, Energy Saving Effect

Inactive Publication Date: 2017-02-08
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems existing in the existing one-bath scouring-bleaching of cotton fabrics, it needs to be carried out under the condition of high temperature and concentrated alkali, causing great damage to the fibers, high temperature and high energy cons

Method used

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  • Method for scouring and bleaching cotton fabric in gaseous phase by utilizing ozone
  • Method for scouring and bleaching cotton fabric in gaseous phase by utilizing ozone
  • Method for scouring and bleaching cotton fabric in gaseous phase by utilizing ozone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1: One-bath scouring-bleaching of cotton fabric

[0047] Cotton woven fabrics after desizing are subjected to one-bath scouring-bleaching of cotton fabrics by the following method:

[0048] (1) Immerse the desized cotton fabric into a non-ionic penetrant solution containing a concentration of 1g / L, repeat padding three times to make the liquid-carrying rate 80%, and then enter the ozone reaction chamber (volume 2L);

[0049] (2) Open the oxygen valve in advance to control the flow rate at 1.5L / min, then turn on the ozone generator switch, and after the ozone is stabilized, it will pass into the bottom of the reaction chamber, and the volume concentration of ozone that is passed into the reaction chamber will be controlled to be 0.06L / (min· L); the bottom of the reaction chamber contains a certain amount of water, and the water can dissolve a certain amount of ozone to delay the rapid decomposition and overflow of ozone, and the treatment time of the fabric in th...

Embodiment 2

[0051] Embodiment 2: one bath scouring-bleaching of cotton fabric

[0052] One-bath scouring-bleaching of cotton fabrics using the following method:

[0053] (1) Immerse the desized cotton fabric into a non-ionic penetrant solution containing a concentration of 2g / L, repeat the padding three times to make the liquid-carrying rate 50%, and then enter the ozone reaction chamber (volume 2L);

[0054] (2) Open the oxygen valve in advance to control the flow rate at 1.5L / min, then turn on the ozone generator switch, and after the ozone is stabilized, it will pass into the bottom of the reaction chamber, and the volume concentration of ozone that is passed into the reaction chamber will be controlled to be 0.06L / (min· L); the bottom of the reaction chamber contains a certain amount of water, and the water can dissolve a certain amount of ozone to delay the rapid decomposition and overflow of ozone, and the treatment time of the fabric in the aqueous solution above the reaction chamb...

Embodiment 3

[0056] Example 3: One-bath scouring-bleaching of cotton fabric

[0057] One-bath scouring-bleaching of cotton fabrics using the following method:

[0058] (1) Immerse the desized cotton fabric into a non-ionic penetrant solution containing a concentration of 1.5g / L, repeat the padding three times to make the liquid-carrying rate 100%, and then enter the ozone reaction chamber (volume 2L);

[0059] (2) Open the oxygen valve in advance to control the flow rate at 1.5L / min, then turn on the ozone generator switch, and after the ozone is stabilized, it will pass into the bottom of the reaction chamber, and the volume concentration of ozone that is passed into the reaction chamber will be controlled to be 0.06L / (min· L); the bottom of the reaction chamber contains a certain amount of water, and the water can dissolve a certain amount of ozone to delay the rapid decomposition and overflow of ozone, and the treatment time of the fabric above the aqueous solution in the reaction chamb...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a method for scouring and bleaching a cotton fabric in a gaseous phase by utilizing ozone and belongs to the technical field of textiles. According to the invention, the cotton fabric is subjected to scouring-bleaching one-step treatment by utilizing high oxidizability of the ozone, so that natural pigments are removed, the whiteness and brightness of the fabric are improved, and the impurities are further removed. The method disclosed by the invention can be performed in a neutral medium at normal temperature, the water consumption is low, lots of energy can be saved in the bleaching process without high-temperature heating, any chemical agent is hardly used, a small amount of wastewater is produced, and the method is a simple and effective treatment method. After treated by ozone, the fabric can reach the whiteness of about 84%, the cottonseed hull removal rate of 88% and capillary effect of 15cm. The cotton fabric subjected to ozone treatment is further subjected to free-radical scavenger solution detergent washing treatment, so that residual hydroxyl radicals, active oxygen atoms and the like on the fabric are removed, and stable performance indexes, such as whiteness value, degree of polymerization and the like, of the fabric in the subsequent standing process are maintained.

Description

technical field [0001] The invention relates to a method for scouring and bleaching cotton fabrics using ozone in a gas phase, belonging to the technical field of textiles. Background technique [0002] After the traditional cotton fabric is desized, most of the size, oil and a small part of natural impurities have been removed, but the existence of most of the natural impurities and the residue of the size make the fabric yellow in color and poor in water absorption. The presence of cottonseed hulls also affects the appearance and feel of the fabric. In addition, the presence of natural pigments in the fabric makes the fabric whiteness not high, which cannot meet the quality requirements for bleached products and brightness of light-colored cloth. Therefore, the post-treatment process also needs to carry out scouring with the main purpose of removing natural impurities and bleaching with the purpose of removing natural pigments on the fabric. In scouring, in order to remove...

Claims

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Application Information

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IPC IPC(8): D06L4/50D06L1/16D06M11/34D06M13/372D06M101/06
CPCD06L1/16D06M11/34D06M13/372D06M2101/06
Inventor 王强范雪荣张杰余圆圆王平袁久刚崔莉张颖
Owner JIANGNAN UNIV
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