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Low-temperature less-alkali pretreatment method for modified polyester/cotton blended knitted fabric

A modified polyester and cotton blending technology, applied in fiber processing, textiles and papermaking, plant fibers, etc., can solve the problems of large damage, environmental pollution, and high production costs of modified polyesters, reduce dosage and temperature, and achieve high efficiency. Pretreatment, the effect of reducing dosage

Active Publication Date: 2013-12-25
佛山市顺德金纺集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a low-temperature and less-alkali pretreatment method for modified polyester / cotton blended knitted fabrics. Disadvantages of ester damage, providing a pretreatment technology suitable for modified polyester fibers and their blended fabrics, which has the advantages of simple procedures and low energy consumption, reduces the amount and temperature of caustic soda, and realizes high-efficiency pretreatment by one-bath hot soaking

Method used

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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  • Low-temperature less-alkali pretreatment method for modified polyester/cotton blended knitted fabric
  • Low-temperature less-alkali pretreatment method for modified polyester/cotton blended knitted fabric
  • Low-temperature less-alkali pretreatment method for modified polyester/cotton blended knitted fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Fabric Variety: Modified polyester / cotton blend (80 / 20) knitted jersey

[0058] New process: short-process process of low-temperature and less-alkali hot soaking method

[0059] (1) Add the above-mentioned one-dose, one-bath low-temperature pretreatment compound preparation (30% caustic soda 1g / L, 37% sodium silicate 1.5g / L, magnesium sulfate 0.05g / L, infiltration Refining agent JFC 2g / L, low-temperature refining agent ZJ-CH58A 3g / L) and knitted gray fabric, the bath ratio is 1:10, heat up to 65°C, add 100% hydrogen peroxide 2g / L, keep warm for 60min, and obtain the bleached fabric;

[0060] (2) Put the above-mentioned bleached fabric into the glacial acetic acid solution, raise the temperature to 50°C, keep it warm for 10-15 minutes, drain the liquid after neutralizing the acid, and then use hot water at 80-90°C and warm water at 50-60°C in sequence. Wash with cold water (20-25°C) and dry at last. Test properties such as whiteness, capillary effect, and whiteness, an...

Embodiment 2

[0065] Fabric Variety: Modified polyester / cotton blend (65 / 35) knitted single jersey

[0066] New process: short-process process of low-temperature and less-alkali hot soaking method

[0067] (1) Add the above-mentioned one-dose, one-bath low-temperature pretreatment compound preparation (30% caustic soda 1g / L, 37% sodium silicate 1.5g / L, magnesium sulfate 0.05g / L, infiltration Refining agent JFC 2g / L, low-temperature refining agent ZJ-CH58A 3g / L) and knitted gray fabric, the bath ratio is 1:10, heat up to 65°C, add 100% hydrogen peroxide 2g / L, keep warm for 60min, and obtain the bleached fabric;

[0068] (2) Put the above-mentioned bleached fabric into the glacial acetic acid solution, raise the temperature to 50°C, keep it warm for 10-15 minutes, drain the liquid after neutralizing the acid, and then use hot water at 80-90°C and warm water at 50-60°C in sequence. Wash with cold water (20-25°C) and dry at last. Test properties such as whiteness, capillary effect, and whitenes...

Embodiment 3

[0073] Fabric Variety: Modified polyester / cotton blend (35 / 65) knitted single jersey

[0074] New process: short-process process of low-temperature and less-alkali hot soaking method

[0075] (1) Add the above-mentioned one-dose, one-bath low-temperature pretreatment compound preparation (30% caustic soda 1.5g / L, 37% sodium silicate 2g / L, magnesium sulfate 0.05g / L, infiltration Refining agent JFC2g / L, low-temperature refining agent ZJ-CH58A4g / L) and knitted gray fabric, the bath ratio is 1:10, heat up to 65°C, add 100% hydrogen peroxide 2.5g / L, keep warm for 60min, and obtain the bleached fabric;

[0076] (2) Put the above-mentioned bleached fabric into the glacial acetic acid solution, raise the temperature to 50°C, keep it warm for 10-15 minutes, drain the liquid after neutralizing the acid, and then use hot water at 80-90°C and warm water at 50-60°C in sequence. Wash with cold water (20-25°C) and dry at last. Test properties such as whiteness, capillary effect, and whiten...

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 relates to a low-temperature less-alkali pretreatment method for a modified polyester / cotton blended knitted fabric. The pretreatment method comprises the steps of (1) soaking a polyester / cotton blended knitted fabric in a low-temperature pretreatment composite preparation liquid which is 1: (7.5-30) in bath ratio, rapidly increasing temperature to 65-70 DEG C, adding 2-2.5g / L of 100% hydrogen peroxide, and preserving heat for 60-90min to obtain the blanched fabric; and (2) soaking the blanched fabric in a glacial acetic acid solution, heating to 45-55 DEG C, preserving heat for 10-15min, neutralizing by acid and discharging liquid, sequentially washing by using hot water of 80-90 DEG C, warm water of 50-60 DEG C and cold water, and drying the fabric. The low-temperature pretreatment process simplifies technological process and shortens processing duration on one hand, and also lowers processing temperature, avoids a plurality of washing and drying processes, and greatly improves production efficiency.

Description

technical field [0001] The invention belongs to the field of pretreatment of textiles, in particular to a low-temperature and less-alkali pretreatment method for modified polyester / cotton blended knitted fabrics. Background technique [0002] Polyester fiber has high strength and good elasticity. Its fabric is crisp, easy to wash and dry quickly, and free from insects. Therefore, it is widely used in clothing, home textiles, and industrial fields. However, due to its high degree of orientation and crystallinity, and the lack of hydrophilic groups and active groups that can bond with dyes on the molecular chain, the traditional polyester fiber has low water absorption and moisture regain, and the static electricity generated by friction is large. Performance is poor. For this reason, various countries are committed to modifying polyester fibers, and have developed various modified polyester fabrics. The present invention is aimed at adding the third component (SIP) and the ...

Claims

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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Application Information

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IPC IPC(8): D06L3/02D06M11/50D06M11/38D06M15/53D06M11/79D06M11/56D06M13/188D06M101/32D06M101/06D06L4/12D06L4/13
Inventor 蔡再生李晓燕沈为俞建勇
Owner 佛山市顺德金纺集团有限公司
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