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Stabilizer for use in hydrogen peroxide degumming and bleaching of flax and its preparation method and application

A technology of flax hydrogen peroxide and stabilizer, which is applied in the direction of bleaching products, chemical production of bast fibers, textiles and papermaking, etc., can solve the problems of single use of stabilizer, poor effect, environmental pollution, etc., and achieve saving of chemical materials and The effect of reducing funds, shortening the process flow, and avoiding severe damage

Inactive Publication Date: 2008-11-05
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process has great disadvantages: ① after sub-bleaching, a large amount of residual liquid is discharged to pollute the environment; ② sodium chlorite is expensive and wastes a lot of money; ③ chlorine dioxide gas produced by sub-bleaching is highly toxic , causing harm to the health of operators; ④ corrosion of equipment
Carboxylates such as EDTA, HEDTA (hydroxyethylethylenediaminetriacetic acid), DTPA (diethylenetriaminepentaacetic acid) are less effective and expensive, and carboxylates such as GAS (gluconate) have stronger complexing ability
However, the biggest disadvantage of the chelating type is that it cannot concentrate metal ions like the adsorption type, nor can it chelate impurities other than metals that catalyze the decomposition of hydrogen peroxide.
[0010] Therefore, the use of a single function of the stabilizer in the single oxygen bleaching can no longer meet the requirements, and the adsorption and chelation mixed stabilizer must be used

Method used

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  • Stabilizer for use in hydrogen peroxide degumming and bleaching of flax and its preparation method and application
  • Stabilizer for use in hydrogen peroxide degumming and bleaching of flax and its preparation method and application
  • Stabilizer for use in hydrogen peroxide degumming and bleaching of flax and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Please see attached figure 2 , the technical process of flax roving degumming and bleaching in this embodiment is as follows figure 2 shown.

[0032] The yarn to be degummed and bleached adopts flax roving (the roving made by Yulu hemp, and the roving count is 18Nm) 200g. Soak flax roving in sulfuric acid (sulfuric acid 15g / L, room temperature, 20 minutes) → wash with water, then use hydrogen peroxide solution (bath ratio 1:10, hydrogen peroxide consumption 6g / L, pH=10, penetrant (C 7-9 h 15-19 (CH 2 CH 2 O) 5 OH) 3g / L, stabilizer 8g / L, temperature 100°C) for 40 minutes, washed with water after treatment, and dried to complete the degumming and bleaching process of flax roving. Among them, the stabilizer (mass percentage) consists of 5% of diethylenetriaminepentamethylenephosphonic acid (DTPMP), 2% of sepiolite, 2% of montmorillonite, 1% of ferric oxide, 1% of magnesium oxide, oxide 1% aluminum, 2% gluconic acid, 6% boric acid, 1% sodium silicate, 1% fatty alco...

Embodiment 2

[0038] Please see attached figure 2 , the technical process of flax roving degumming and bleaching in this embodiment is as follows figure 2 shown.

[0039] The yarn to be degummed and bleached is 200g of flax roving (the roving spun by Yulu hemp, and the roving count is 20Nm). Soak flax roving in sulfuric acid (sulfuric acid 10g / L, room temperature, 30 minutes) → wash with water, then use hydrogen peroxide solution (bath ratio 1:15, hydrogen peroxide consumption 8g / L, pH=9.5, penetrant (C 7-9 h 15-19 (CH 2 CH 2 O) 5 OH) 5g / L, stabilizer 10g / L, temperature 100°C) for 60 minutes, washed with water after treatment, and dried to complete the degumming and bleaching process of flax roving. Among them, the stabilizer (mass percentage) consists of 8% of diethylenetriaminepentamethylenephosphonic acid (DTPMP), 4% of sepiolite, 6% of montmorillonite, 4% of ferric oxide, 4% of magnesium oxide, oxide Aluminum 3%, gluconic acid 6%, boric acid 10%, sodium silicate 2%, nonionic su...

Embodiment 3

[0046] Please see attached figure 2 , the present embodiment is to the technological process of flax fabric bleaching as figure 2 shown.

[0047] The fabric to be bleached adopts linen fabric (plain weave, 220g / m 2 , 150×158 pieces / dm) 30×40cm piece. Squeeze the linen fabric with acid (sulfuric acid 20g / L, room temperature) → stack (room temperature, 20 minutes n) → wash with water, and then use hydrogen peroxide solution (hydrogen peroxide dosage 8g / L, pH=10.5, penetrant (C 7-9 h 15-19 (CH 2 CH 2 O) 5 OH) 3g / L, stabilizer 6g / L, temperature 100°C) for 40 minutes, washed with water after the treatment, and dried to complete the bleaching process of the linen fabric. Bleached linen was dyed using the following recipe. Among them, the stabilizer (mass percentage) consists of 10% of diethylenetriaminepentamethylenephosphonic acid (DTPMP), 3% of sepiolite, 6% of montmorillonite, 6% of ferric oxide, 4% of magnesium oxide, oxidized Aluminum 5%, gluconic acid 8%, boric acid...

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Abstract

The invention relates to a stabilizer for hydrogen peroxide bleaching of linen rove and the textile and the new technology of degumming and bleaching for green environment protection. The stabilizer comprises 5-15% of diethylene triamine pentaacetate methylene phosphonic acids, 2-8% of sepiolite, 2-10% of montmorillonite, 1-6% of iron oxide, 1-5% of magnesium oxide, 1-8% of alumina oxide, 2-12% of gluconate, 6-20% of boric acid, 1-6% of sodium silicate, 1-8% of non-ionic surface active agent and distilled water. The stabilizer in the invention possesses merits of absorbed and chelated types and does not have their shortcomings so as to achieve the requirement with high temperature resistance, alkali-resistant and high whiteness. During the using process, after absorbed and chelated stabilizers are mixed, they are assisted by certain non-ionic surface active agent, polysaccharide cellulose protective agent and little water glass; the component of mixed stabilizers and the consumption of hydrogen peroxide are adjusted so as to achieve the required whiteness for the flax with different quality in single oxygen bleaching.

Description

technical field [0001] The invention relates to a stabilizer for hydrogen peroxide bleaching of flax roving and its fabrics and a new technology of degumming and bleaching which is green and environment-friendly. technical background [0002] Both flax fiber and cotton fiber are cellulose fibers, and the structure of flax determines its cool feel, excellent moisture absorption and moisture release. Linen fabrics cater to the trend of high-grade, differentiated and natural fibers. These advantages make linen fabrics popular among consumers. However, the degumming and bleaching of flax roving and its fabrics has always been in the vicious circle of suboxygen bleaching, which is not conducive to environmental protection and is not economical. [0003] The general process of the traditional suboxygen bleaching process is pickling→sodium chlorite bleaching→water washing→hydrogen peroxide bleaching→water washing. Among them, the pickling process is: rolling acid (sulfuric acid 5...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01C1/02D06L3/02D06M13/288D06L4/12D06L4/13
Inventor 汪前东杨继玲李兰刘必前
Owner INST OF CHEM CHINESE ACAD OF SCI
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