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Dyeing and finishing process for reducing strength reduction of PLA-PHBV, Tencel and cotton interwoven fabrics during dyeing

A PLA-PHBV, interwoven fabric technology, applied in the direction of dyeing, enzyme/microorganism biochemical treatment, plant fibers, etc., can solve the problem of limiting the application of PLA-PHBV fibers, damage to the strength of PLA-PHBV fibers, and difficulty in dyeing and finishing. problem, to achieve the effect of bright color, suitable color depth, color depth and uniformity

Active Publication Date: 2020-04-14
HANGZHOU XINSHENG PRINTING & DYEING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, because the PLA-PHBV fiber is not resistant to high temperature and strong alkali, it is difficult to dye and finish the fabric obtained by blending PLA-PHBV, Tencel and cotton fibers, which limits the application of PLA-PHBV fiber in dyeing and finishing. application
In particular, when PLA-PHBV is blended with natural fibers such as Tencel and cotton fiber, it is necessary to choose reactive dyes for dyeing, the alkaline color fixing process and the mercerizing process in the pretreatment process will damage the strength of PLA-PHBV fibers, which is not conducive to PLA -Application of fabrics obtained by interweaving PHBV, Tencel, and cotton fibers in clothing and other fields

Method used

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  • Dyeing and finishing process for reducing strength reduction of PLA-PHBV, Tencel and cotton interwoven fabrics during dyeing
  • Dyeing and finishing process for reducing strength reduction of PLA-PHBV, Tencel and cotton interwoven fabrics during dyeing
  • Dyeing and finishing process for reducing strength reduction of PLA-PHBV, Tencel and cotton interwoven fabrics during dyeing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Embodiment 1: The dyeing and finishing process that reduces the strength of PLA-PHBV, Tencel, and cotton interwoven fabrics during dyeing, including the following steps:

[0066] Step 1, enzyme treatment: Calculate according to the total bath volume 400L (the initial fabric can be fully immersed), according to the consumption in Table 1, α-amylase, refining penetrant CNX-NEW, chelating dispersant V, The desizing agent VE is thoroughly mixed, and the initial fabric (ie, PLA-PHBV, Tencel, and cotton interwoven fabric) is subjected to enzyme treatment. The fabrics were refrigerated for 24h after passing through the enzyme treatment solution on a paddle.

[0067] Step 2: Pretreatment: According to the dosage in Table 1, hydrogen peroxide (mass concentration is 27.5%), sodium bicarbonate, multifunctional refining agent ONE and water are prepared into a pretreatment solution, and the fabric after enzyme treatment is mixed with the The bath ratio of the pretreatment solution ...

Embodiment 2-5

[0074] Example 2-5: The dyeing and finishing process that reduces the strength of PLA-PHBV, Tencel, and cotton interwoven fabrics in dyeing is different from Example 1 in that the components used in each step and their corresponding consumption are as shown in Table 1 and Table 1. shown in Table 2.

[0075]The components involved in each step in the embodiment 1-5 of table 1 and their corresponding consumption and process parameters

[0076]

[0077] In the embodiment 1-5 of table 2, the composition of the disperse dye liquor of step 3 and its corresponding consumption, the technological parameter of disperse dyeing

[0078]

Embodiment 6

[0079] Example 6: Dyeing and finishing process for reducing the strength reduction of PLA-PHBV, Tencel, and cotton interwoven fabrics during dyeing. The difference from Example 1 is that in step 1, the temperature for enzymatic treatment is 55°C, and the time for enzymatic treatment is 5s, when the time is up, the fabric is subjected to the enzyme treatment solution on a paddle and then refrigerated for 12h.

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Abstract

The invention discloses a dyeing and finishing process for reducing the strength reduction of PLA-PHBV, Tencel and cotton interwoven fabrics during dyeing. The dyeing and finishing process for reducing the strength reduction of PLA-PHBV, Tencel and cotton interwoven fabrics during dyeing comprises the following steps: step 1, performing enzyme treatment to obtain the fabric after enzyme treatment;step 2, performing pre-treatment to obtain the fabric after pre-treatment; step 3, performing disperse dyeing to obtain primary dyed fabric; step 4, reducing and cleaning to obtain the primary dyed fabric after cleaning; step 5, performing active dyeing to obtain the dyed fabric; step 6, performing water processing to obtain the clean fabric; and step 7, finalizing and finishing to obtain the finished fabric. The dyeing and finishing process disclosed by the invention can not only achieve good color fastness for PLA-PHBV, Tencel, and cotton interwoven fabrics, but also keep the PLA-PHBV fibers in the weft direction of the fabric in good strength; and the dyeing and finishing process disclosed by the invention has the advantage of improving the longitudinal strength to a certain extent.

Description

technical field [0001] The invention relates to the technical field of textile dyeing and finishing processes, and more particularly, to a dyeing and finishing process for reducing the strength reduction of PLA-PHBV, Tencel and cotton interwoven fabrics during dyeing. Background technique [0002] Poly(3-hydroxybutyric acid-co-3-hydroxyvaleric acid copolyester) fiber, namely PHBV fiber, is a thermoplastic aliphatic polyester material with good biocompatibility and biodegradability. Under certain conditions, it can be decomposed into non-toxic and harmless substances such as water and carbon dioxide, which is an excellent environmental protection substance. However, the high crystallinity, poor thermal stability, and high processing threshold of PHBV fibers limit the application and development of PHBV fibers. [0003] Polylactic acid fiber, that is, PLA fiber, is made of plants, crops, etc. as raw materials. It is prepared into polylactic acid fiber by lactic acid fermentat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/16D06P1/38D06P3/872D06P1/653D06P5/04D06P5/10D06P1/673D06M16/00D06M15/263D06M13/148D06M13/144D06M13/402D06M13/292D06L4/13D06L4/12D06M101/06D06M101/32D06M101/38
CPCD06P1/16D06P1/38D06P3/8252D06P3/8219D06P3/8214D06P1/6533D06P5/04D06P5/10D06P1/6735D06M16/003D06M15/263D06M13/148D06M13/144D06M13/402D06M13/292D06L4/13D06L4/12D06M2101/06D06M2101/32D06M2101/38
Inventor 吴绍明占敏华
Owner HANGZHOU XINSHENG PRINTING & DYEING
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