CN106435764A - Silk degumming method - Google Patents

Abstract

The invention discloses a silk degumming method and relates to the technical field of silk production. The method comprises steps as follows: A, silk is placed in a sodium bicarbonate solution with the concentration being 0.4%-0.6%, and the solution is heated to 85-90 DEG C and kept at the temperature for 40-60 min; B, the silk is fished up, put in a clear water tank to be washed clean and dewatered in a dewaterer; C, the silk obtained in the step B is placed in a glacial acetic acid solution with the concentration being 0.03%-0.05%, and the solution is heated to 40-45 DEG C and kept at the temperature for 20-30 min; D, the silk is taken out, washed clean with clear water and dewatered, and the degummed silk is obtained. Compared with the prior art, the method has the advantages that excessive degumming can be prevented, and the degumming rate can reach about 75%; damage to fibroin is avoided, and the silk quality of the degummed silk is guaranteed.

Description

The Degumming method of silkworm silk

Technical field

The present invention relates to silkworm silk production technical field, especially a kind of Degumming method of silkworm silk.

Background technology

Silkworm silk is to be formed by silk glands oozy silk liquid solidification in silkworm body, and its main component is fibroin, also contains quite The sericin of quantity, although sericin has certain protective effect to fibroin, but if content is excessive, can affect gloss and the handss of fibroin The following process of sense and silk fiber, it is therefore necessary to remove most sericin in silkworm silk, avoids the damage to fibroin simultaneously as far as possible Wound.

Content of the invention

Problem to be solved by this invention is to provide a kind of Degumming method of silkworm silk, can solve the damage when carrying out degumming The problem of silkworm silk.

In order to solve the above problems, the technical solution used in the present invention is：The Degumming method of this silkworm silk, walks including following Suddenly：

A, silkworm silk are positioned in the cold sodium bicarbonate solution that concentration is 0.4%～0.6%, are heated to 85～90 DEG C, are incubated 40～60 points Clock；

B, silkworm silk is picked up, put into wash clean in clear water reserviors, then use dewaterer dewatered and washed；

C, step B gained silkworm silk is put in the glacial acetic acid solution that concentration is 0.03～0.05%, be heated to 40～45 DEG C, insulation 20～30 minutes；

D, taking-up silkworm silk clear water wash clean, then dewatered and washed, obtain boiled silk.

In the Degumming method technical scheme of above-mentioned silkworm silk, more specifically technical scheme can also be：Will before implementation steps A Described silkworm silk is good with line bolt.

Due to employing technique scheme, the present invention compared with prior art has the advantages that：

The cold sodium bicarbonate solution that the present invention is 0.4%～0.6% using concentration carries out degumming to silkworm silk, and degumming temperature is 85～90 DEG C, prevent degumming excessively, degumming rate reaches about 75%；Then the glacial acetic acid solution being 0.03～0.05% using concentration synthesis silkworm silk Middle remaining sodium bicarbonate, it is to avoid fibroin is caused damage it is ensured that after degumming silkworm silk silk quality.

Specific embodiment

With reference to specific embodiment, the invention will be further described：

Embodiment 1

A kind of Degumming method of silkworm silk, comprises the following steps that：Silkworm silk is good with line bolt；

A, silkworm silk are positioned in the cold sodium bicarbonate solution that concentration is 0.4%, are heated to 85 DEG C, are incubated 40 minutes；

B, silkworm silk is picked up, put into wash clean in clear water reserviors, then use dewaterer dewatered and washed；

C, step B gained silkworm silk is put in the glacial acetic acid solution that concentration is 0.03%, be heated to 40 DEG C, be incubated 20 minutes；

D, taking-up silkworm silk clear water wash clean, then dewatered and washed, obtain boiled silk.

Calculate after testing, after degumming, the fracture strength loss rate of silkworm silk is 22.7%, extension at break loss rate is 17.5%.

Embodiment 2

A kind of Degumming method of silkworm silk, comprises the following steps that：Silkworm silk is good with line bolt；

A, silkworm silk are positioned in the cold sodium bicarbonate solution that concentration is 0.6%, are heated to 90 DEG C, are incubated 60 minutes；

B, silkworm silk is picked up, put into wash clean in clear water reserviors, then use dewaterer dewatered and washed；

C, step B gained silkworm silk is put in the glacial acetic acid solution that concentration is 0.05%, be heated to 45 DEG C, be incubated 30 minutes；

D, taking-up silkworm silk clear water wash clean, then dewatered and washed, obtain boiled silk.

Calculate after testing, after degumming, the fracture strength loss rate of silkworm silk is 24.8%, extension at break loss rate is 19.2%.

Claims (2)

1. a kind of Degumming method of silkworm silk is it is characterised in that comprise the following steps：

A, silkworm silk are positioned in the cold sodium bicarbonate solution that concentration is 0.4%～0.6%, are heated to 85～90 DEG C, are incubated 40～60 points Clock；

B, silkworm silk is picked up, put into wash clean in clear water reserviors, then use dewaterer dewatered and washed；

C, step B gained silkworm silk is put in the glacial acetic acid solution that concentration is 0.03～0.05%, be heated to 40～45 DEG C, insulation 20～30 minutes；

D, taking-up silkworm silk clear water wash clean, then dewatered and washed, obtain boiled silk.

2. according to claim 1 silkworm silk Degumming method it is characterised in that：By described silkworm silk line before implementation steps A Bolt is good.