A kind of high temperature and high pressure acid degumming method of tussah silk

Abstract

The invention discloses a method for high-temperature and high-pressure acid degumming of tussah silk. Firstly, acid, a penetrant and water are mixed, degumming liquid is obtained, silk is soaked with the degumming liquid, and degumming is carried out under the conditions that the pressure is 1.0-3.0 MPa and the temperature is 100-140 DEG C. The tussah silk is treated through the high-temperature and high-pressure acid degumming method, the hydrolysis speed of sericin and the breaking speed of protein peptide bonds are increased, degumming time is short, the degumming rate can reach 13%, the breaking strength of the silk obtained after degumming can be kept at about 620 N, the strength losses of the silk are small, and rapid degumming of the tussah silk is achieved.

Description

technical field

[0001] The invention relates to the technical field of textile dyeing and finishing, in particular to a high-temperature and high-pressure acid degumming method for tussah silk. Background technique

[0002] Tussah silk is a kind of wild silk, and the tussah silk produced in my country accounts for 80% of the wild silk in the world. It is characterized by high mechanical strength, acid and alkali resistance, and is widely used in weaving various silks and satins and knitwear. Tussah silk fabric is composed of silk fibroin and sericin. Sericin exists around the silk fibroin to protect and glue the fibroin. Its colloid is not easy to soften and dissolve in hot water. The existence of sericin will affect the quality of tussah silk. The luster, feel and printing and dyeing processing properties of the fabric. Therefore, the sericin on the silk surface needs to be degummed.

[0003] Commonly used degumming methods in the prior art include alkaline degumming, ac...

Examples

Embodiment 1

[0032] Mix tartaric acid, penetrant JFC-1 and water to prepare a degumming solution, wherein the concentration of tartaric acid is 0.2g / L, and the concentration of penetrant JFC-1 is 0.1g / L;

[0033] After wetting the tussah silk in water, immerse it in the degumming solution, control the bath ratio of the tussah silk and the degumming solution to 1:30, carry out degumming treatment in an autoclave, control the pressure at 1.4MPa, and the temperature at 140°C for 30 minutes;

[0034] Take out the degummed tussah silk, wash the tussah silk three times at 110°C, and then dry the tussah silk at 70°C.

[0035] Detect the degumming rate of tussah silk fabric (degumming rate=(fabric weight before degumming-fabric weight after degumming) / fabric weight before degumming), the available degumming rate is 11.5%;

[0036] The breaking strength of the tussah silk fabric was detected by an electronic fabric strength meter, and the breaking strength was 550N.

Embodiment 2

[0038] Mix tartaric acid, penetrant JFC-e and water to prepare a degumming solution, wherein the concentration of tartaric acid is 0.1g / L, and the concentration of penetrant JFC-e is 0.1g / L;

[0039] After wetting the tussah silk in water, immerse it in the degumming solution, control the bath ratio of the tussah silk and the degumming solution to 1:35, perform degumming treatment in an autoclave, control the pressure at 1.0MPa, and the temperature at 130°C for 40 minutes;

[0040] Take out the degummed tussah silk, wash the tussah silk three times at 130°C, and then dry the tussah silk at 110°C.

[0041] According to the method of Example 1, the degumming rate and breaking strength of tussah silk were detected, and the degumming rate was 12.8%, and the breaking strength was 590N.

Embodiment 3

[0043] Mix citric acid, penetrant Pingping plus O-8 and water to prepare a degumming solution, wherein the concentration of citric acid is 0.3g / L, and the penetrating agent Pingping plus O-8 is 0.3g / L;

[0044] After wetting the tussah silk in water, immerse it in the degumming solution, control the bath ratio of the tussah silk and the degumming solution to 1:30, carry out degumming treatment in an autoclave, control the pressure at 3.0MPa, and the temperature at 120°C for 30 minutes;

[0045] Take out the degummed tussah silk, wash the tussah silk three times at 120°C, and then dry the tussah silk at 130°C.

[0046] According to the method of Example 1, the degumming rate and breaking strength of tussah silk were detected, and the degumming rate was 13.0%, and the breaking strength was 620N.

technical field

[0001] The invention relates to the technical field of textile dyeing and finishing, in particular to a high-temperature and high-pressure acid degumming method for tussah silk. Background technique

[0002] Tussah silk is a kind of wild silk, and the tussah silk produced in my country accounts for 80% of the wild silk in the world. It is characterized by high mechanical strength, acid and alkali resistance, and is widely used in weaving various silks and satins and knitwear. Tussah silk fabric is composed of silk fibroin and sericin. Sericin exists around the silk fibroin to protect and glue the fibroin. Its colloid is not easy to soften and dissolve in hot water. The existence of sericin will affect the quality of tussah silk. The luster, feel and printing and dyeing processing properties of the fabric. Therefore, the sericin on the silk surface needs to be degummed.

[0003] Commonly used degumming methods in the prior art include alkaline degumming, ac...

Examples

Embodiment 1

[0032] Mix tartaric acid, penetrant JFC-1 and water to prepare a degumming solution, wherein the concentration of tartaric acid is 0.2g / L, and the concentration of penetrant JFC-1 is 0.1g / L;

[0033] After wetting the tussah silk in water, immerse it in the degumming solution, control the bath ratio of the tussah silk and the degumming solution to 1:30, carry out degumming treatment in an autoclave, control the pressure at 1.4MPa, and the temperature at 140°C for 30 minutes;

[0034] Take out the degummed tussah silk, wash the tussah silk three times at 110°C, and then dry the tussah silk at 70°C.

[0035] Detect the degumming rate of tussah silk fabric (degumming rate=(fabric weight before degumming-fabric weight after degumming) / fabric weight before degumming), the available degumming rate is 11.5%;

[0036] The breaking strength of the tussah silk fabric was detected by an electronic fabric strength meter, and the breaking strength was 550N.

Embodiment 2

[0038] Mix tartaric acid, penetrant JFC-e and water to prepare a degumming solution, wherein the concentration of tartaric acid is 0.1g / L, and the concentration of penetrant JFC-e is 0.1g / L;

[0039] After wetting the tussah silk in water, immerse it in the degumming solution, control the bath ratio of the tussah silk and the degumming solution to 1:35, perform degumming treatment in an autoclave, control the pressure at 1.0MPa, and the temperature at 130°C for 40 minutes;

[0040] Take out the degummed tussah silk, wash the tussah silk three times at 130°C, and then dry the tussah silk at 110°C.

[0041] According to the method of Example 1, the degumming rate and breaking strength of tussah silk were detected, and the degumming rate was 12.8%, and the breaking strength was 590N.

Embodiment 3

[0043] Mix citric acid, penetrant Pingping plus O-8 and water to prepare a degumming solution, wherein the concentration of citric acid is 0.3g / L, and the penetrating agent Pingping plus O-8 is 0.3g / L;

[0044] After wetting the tussah silk in water, immerse it in the degumming solution, control the bath ratio of the tussah silk and the degumming solution to 1:30, carry out degumming treatment in an autoclave, control the pressure at 3.0MPa, and the temperature at 120°C for 30 minutes;

[0045] Take out the degummed tussah silk, wash the tussah silk three times at 120°C, and then dry the tussah silk at 130°C.

[0046] According to the method of Example 1, the degumming rate and breaking strength of tussah silk were detected, and the degumming rate was 13.0%, and the breaking strength was 620N.