Fast identification method for plant dyed cotton fabric and chemical dyed cotton fabric through bleaching

Abstract

The invention discloses a fast identification method for plant dyed cotton fabric and chemical dyed cotton fabric through bleaching. The method comprises steps that the chlorite, the activator and thepenetrant are respectively added to the distilled water so that concentrations are 10-15% of the chlorite, 4-6% of the activator and 2-3% of the penetrant respectively to obtain the solution, mineralacid is then added to the solution, the pH is adjusted to 1-3, and a special reagent is prepared; the special reagent is measured and obtained, a pair of tweezers are utilized to completely immerse the fabric in the special reagent for 3-5 seconds, and then the fabric is quickly removed and placed on a white identification plate; the color change of the fabric on the white identification plate isobserved within 1-10 s after the fabric is taken out, if the fabric fades or turns white, the fabric is the plant dyed fabric; if the fabric has no color change, the fabric is the chemical dyed fabric. The method is advantaged in that operation is simple and convenient, identification is simple and easy, the consumption time is short, the result is accurate, universality is realized, and the identification time of the plant dyed fabric is shorter than 10s.

Description

technical field

[0001] The invention relates to the field of textile industry, in particular to a method for rapidly and accurately identifying plant-dyed fabrics and chemically-dyed fabrics. Background technique

[0002] Vegetable dyes are extracted from natural plants, and are generally used to dye loose fabrics and then processed into textiles. In recent years, due to the advantages of greenness and safety brought by the natural properties of plant dyes, they have been praised by manufacturers and consumers, so the output of plant dyes has increased year by year.

[0003] Existing a large amount of vegetable dyeing products circulates on the market now, and it satisfies the needs of different consumers simultaneously with chemical dyeing products. However, so far, there is no standard identification method for plant dyes and chemical dyes. It has caused confusion in the quality of some plant dyeing products on the market, and some chemical dyeing products are counterfei...

Examples

Embodiment 1

[0027] Add chlorite, activator and penetrant to distilled water and mix well; the concentration of sodium chlorite is 15% (w / w), the concentration of activator ammonium acetate is 10% (w / w), and the concentration of penetrant JFC The concentration was 5% (w / w); then concentrated sulfuric acid was added at room temperature, and the pH value was adjusted to 2 to complete the preparation of the reagent. Measure 5 mL of the above reagent into a 10 mL beaker.

[0028] Weigh 1g of chemically dyed red fabric, quickly immerse it in a beaker for 5s with tweezers and take it out quickly, place it on the white identification board, the fabric has no color change after 10s, analysis confirms that the above fabric is chemically dyed fabric, the experimental results are consistent with the actual situation .

Embodiment 2

[0030] Add chlorite, activator and penetrant to distilled water to mix well; the concentration of sodium chlorite is 10% (w / w), the amount of activator ammonium acetate is 6% (w / w), and the penetrant JFC The addition amount of the reagent is 2% (w / w); then add concentrated hydrochloric acid at room temperature, and adjust the pH value to 1 to complete the preparation of the reagent, and measure 5 mL of the above reagent into a 10 mL beaker.

[0031] Weigh 1g of plant-dyed yellow fabric, quickly dip it into a beaker with tweezers for 3 seconds and quickly take it out, place it on a white identification board, the fabric turns white after 2 seconds, analysis confirms that the above-mentioned fabric is plant-dyed fabric, and the experimental results are consistent with the actual situation .

Embodiment 3

[0033] Add chlorite, activator and penetrant to distilled water to make it evenly mixed; the concentration of sodium chlorite is 6% (w / w), the amount of activator ammonium acetate is 5% (w / w), and the penetrant JFC The addition amount of the reagent was 3% (w / w); then concentrated sulfuric acid was added at room temperature, and the pH value was adjusted to 3 to complete the preparation of the reagent. Measure 5 mL of the above reagent into a 10 mL beaker.

[0034] Weigh 1g of plant-dyed red fabric, quickly dip it into the beaker with tweezers for 4s and quickly take it out, place it on the white identification board, the fabric turns pink after 1s, and turns white after 8s, the above-mentioned fabric is determined to be plant-dyed fabric by analysis , the experimental results are consistent with the actual situation.

technical field

[0001] The invention relates to the field of textile industry, in particular to a method for rapidly and accurately identifying plant-dyed fabrics and chemically-dyed fabrics. Background technique

[0002] Vegetable dyes are extracted from natural plants, and are generally used to dye loose fabrics and then processed into textiles. In recent years, due to the advantages of greenness and safety brought by the natural properties of plant dyes, they have been praised by manufacturers and consumers, so the output of plant dyes has increased year by year.

[0003] Existing a large amount of vegetable dyeing products circulates on the market now, and it satisfies the needs of different consumers simultaneously with chemical dyeing products. However, so far, there is no standard identification method for plant dyes and chemical dyes. It has caused confusion in the quality of some plant dyeing products on the market, and some chemical dyeing products are counterfei...

Examples

Embodiment 1

[0027] Add chlorite, activator and penetrant to distilled water and mix well; the concentration of sodium chlorite is 15% (w / w), the concentration of activator ammonium acetate is 10% (w / w), and the concentration of penetrant JFC The concentration was 5% (w / w); then concentrated sulfuric acid was added at room temperature, and the pH value was adjusted to 2 to complete the preparation of the reagent. Measure 5 mL of the above reagent into a 10 mL beaker.

[0028] Weigh 1g of chemically dyed red fabric, quickly immerse it in a beaker for 5s with tweezers and take it out quickly, place it on the white identification board, the fabric has no color change after 10s, analysis confirms that the above fabric is chemically dyed fabric, the experimental results are consistent with the actual situation .

Embodiment 2

[0030] Add chlorite, activator and penetrant to distilled water to mix well; the concentration of sodium chlorite is 10% (w / w), the amount of activator ammonium acetate is 6% (w / w), and the penetrant JFC The addition amount of the reagent is 2% (w / w); then add concentrated hydrochloric acid at room temperature, and adjust the pH value to 1 to complete the preparation of the reagent, and measure 5 mL of the above reagent into a 10 mL beaker.

[0031] Weigh 1g of plant-dyed yellow fabric, quickly dip it into a beaker with tweezers for 3 seconds and quickly take it out, place it on a white identification board, the fabric turns white after 2 seconds, analysis confirms that the above-mentioned fabric is plant-dyed fabric, and the experimental results are consistent with the actual situation .

Embodiment 3

[0033] Add chlorite, activator and penetrant to distilled water to make it evenly mixed; the concentration of sodium chlorite is 6% (w / w), the amount of activator ammonium acetate is 5% (w / w), and the penetrant JFC The addition amount of the reagent was 3% (w / w); then concentrated sulfuric acid was added at room temperature, and the pH value was adjusted to 3 to complete the preparation of the reagent. Measure 5 mL of the above reagent into a 10 mL beaker.

[0034] Weigh 1g of plant-dyed red fabric, quickly dip it into the beaker with tweezers for 4s and quickly take it out, place it on the white identification board, the fabric turns pink after 1s, and turns white after 8s, the above-mentioned fabric is determined to be plant-dyed fabric by analysis , the experimental results are consistent with the actual situation.