CN107964687A

CN107964687A - A kind of degreasing method of animal wool

Info

Publication number: CN107964687A
Application number: CN201711213429.9A
Authority: CN
Inventors: 黄桂凤
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-11-28
Filing date: 2017-11-28
Publication date: 2018-04-27

Abstract

The present invention relates to a kind of degreasing method of animal wool, belong to natural fiber processing technique field.This method comprises the following steps：1) skin and flesh, the dust of animal wool attachment are removed；2) animal wool is soaked with compound degreasing agent in weakly alkaline solution, to carry out a degreasing；3) once flushing is carried out to animal wool with hot water；4) animal wool is soaked with biology enzyme in weakly acidic solution, to carry out secondary degreasing；5) secondary flushing is carried out to animal wool with hot water, the animal wool of degreasing is can obtain after dry.The technique of this method is simple, and degreasing effect is good, and the threat to environment is small.

Description

A kind of degreasing method of animal wool

Technical field

The present invention relates to the processing technique field of natural fiber, has and is related to a kind of degreasing method of animal wool.

Background technology

Animal fiber main component is the protein through peptide linkage into chain structure by a series of amino acid, is excellent Textile raw material.Since thick animal fiber contains lipid, lipid forms serious barrier to enzyme, reducing agent, sweller etc.；Oil The subsequent technique that fat hydrolyzes cutin, such as decoloration, ultrafiltration, nanofiltration make work efficiency be greatly lowered simultaneously seriously because blocking microporous Influence wool spinning fiber quality.Therefore, it is exactly first to need degreasing that the essential step utilized is processed to animal fiber.At present, it is right The most common method of animal fiber degreasing has soda ash degreasing and organic solvent degreasing.But soda ash degreasing agent, temperature is relatively low, institute It is poor with degreasing effect；Although organic solvent degreasing degreasing effect is good, costly, and what is used is all various easily dirty The organic solvent of environment is contaminated, is unfavorable for environmental protection.

The content of the invention

The technical problem to be solved in the present invention is to provide a kind of degreasing method of animal wool, the technique of this method is simple, takes off Fat effect is good, and the threat to environment is small.

In order to solve the above technical problems, the present invention uses following technical scheme：

A kind of degreasing method of animal wool, comprises the following steps：

1) skin and flesh, the dust of animal wool attachment are removed；

2) animal wool is soaked with compound degreasing agent in weakly alkaline solution, to carry out a degreasing；

3) once flushing is carried out to animal wool with hot water；

4) animal wool is soaked with biology enzyme in weakly acidic solution, to carry out secondary degreasing；

5) secondary flushing is carried out to animal wool with hot water, the animal wool of degreasing is can obtain after dry.

In above-mentioned technical proposal：

In step 2), the condition of a degreasing is：PH=8~10 of weakly alkaline solution, soaking temperature are 60~70 DEG C, soaking time is 30~60min；The addition of compound degreasing agent is the 1%~5% of weakly alkaline solution weight, compound degreasing Agent is by prodan, polyvinyl alcohol and sodium carbonate according to 1:2~5:3~8 weight ratio is mixed to prepare.

In step 3), the process of the once flushing is：First with 60~70 DEG C of 5~10min of hot water injection, then with 45~ 55 DEG C of 15~25min of hot water injection.

In step 4), the condition of the secondary degreasing is：PH=4~6 of weakly acidic solution, soaking temperature are 40~60 DEG C, soaking time is 1~3h；The addition of biology enzyme is the 0.1%~1% of weakly alkaline solution weight, and biology enzyme is false by solution fat Silk Yeast-lipase and papain are according to 1:0.05~0.1 weight ratio is mixed to prepare.

Further, the activity of the Candida lipalytica Lipase is preferably 0.3~10,000 IU/g, the Papain The activity of enzyme is preferably 5~200,000 IU/g.

In step 5), the process of the secondary flushing is：First with 80~90 DEG C of hot water injection 10~20min, Ran Houyong 60~80 DEG C of 10~20min of hot water injection, finally with 40~60 DEG C of 20~30min of hot water injection.

Beneficial effects of the present invention are：

1) degreasing of inorganic compounding degreasing agent and biology enzyme degreasing be combined with each other by the present invention, in temperature during compound degreasing agent degreasing Carried out under the higher alkaline condition of degree, being capable of effective degreasing；Biology enzyme degreasing is then by being used in combination fat lipase from candida sp And papain, animal wool can be carried out deeper into degreasing, degreasing effect more optimizes and gos deep into；

2) hot water injection is used after a degreasing and secondary degreasing, the purpose of once flushing is neutralization animal wool surface Lye, the purpose of secondary bath also can be removed further for enzyme deactivation activity and the acid solution on neutralization animal wool surface, flushing twice The lipid of animal wool, so as to further improve degreasing effect.

Embodiment

With reference to specific embodiment for instruction and explanation of the present invention.

Embodiment 1

The degreasing method of animal wool, comprises the following steps：1) skin and flesh, the dust of animal wool attachment are removed；2) in alkalescent Animal wool is soaked with compound degreasing agent in solution, to carry out a degreasing；3) once flushing is carried out to animal wool with hot water；4) Animal wool is soaked with biology enzyme in weakly acidic solution, to carry out secondary degreasing；5) secondary punching is carried out to animal wool with hot water Wash, the animal wool of degreasing is can obtain after dry.

In step 2), the condition of a degreasing is：The pH=8 of weakly alkaline solution, soaking temperature are 65 DEG C, and soaking time is 60min；The addition of compound degreasing agent be weakly alkaline solution weight 1%, compound degreasing agent by prodan, polyvinyl alcohol and Sodium carbonate is according to 1:3:8 weight ratio is mixed to prepare.

In step 3), the process of once flushing is：First with 60 DEG C of hot water injection 8min, then with 55 DEG C of hot water injection 15min。

In step 4), the condition of secondary degreasing is：The pH=5 of weakly acidic solution, soaking temperature are 60 DEG C, and soaking time is 1h；The addition of biology enzyme is the 0.5% of weakly alkaline solution weight, and biology enzyme is by Candida lipalytica Lipase (10,000 IU/g) With papain (50,000 IU/g) according to 1:0.08 weight ratio is mixed to prepare.

In step 5), the process of secondary flushing is：First with 90 DEG C of hot water injection 10min, then rushed with 70 DEG C of hot water 20min is washed, finally with 40 DEG C of hot water injection 25min.

Embodiment 2

In step 2), the condition of a degreasing is：The pH=9 of weakly alkaline solution, soaking temperature are 70 DEG C, and soaking time is 30min；The addition of compound degreasing agent be weakly alkaline solution weight 3%, compound degreasing agent by prodan, polyvinyl alcohol and Sodium carbonate is according to 1:5:3 weight ratio is mixed to prepare.

In step 3), the process of once flushing is：First with 65 DEG C of hot water injection 10min, then with 45 DEG C of hot water injection 20min。

In step 4), the condition of secondary degreasing is：The pH=6 of weakly acidic solution, soaking temperature are 40 DEG C, and soaking time is 2h；The addition of biology enzyme is the 1% of weakly alkaline solution weight, and biology enzyme is by Candida lipalytica Lipase (0.3 ten thousand IU/g) With papain (100,000 IU/g) according to 1:0.1 weight ratio is mixed to prepare.

In step 5), the process of secondary flushing is：First with 80 DEG C of hot water injection 15min, then rushed with 70 DEG C of hot water 10min is washed, finally with 50 DEG C of hot water injection 20min.

Embodiment 3

In step 2), the condition of a degreasing is：The pH=10 of weakly alkaline solution, soaking temperature are 60 DEG C, soaking time For 50min；The addition of compound degreasing agent is the 5% of weakly alkaline solution weight, and compound degreasing agent is by prodan, polyvinyl alcohol With sodium carbonate according to 1:2:5 weight ratio is mixed to prepare.

In step 3), the process of once flushing is：First with 70 DEG C of hot water injection 5min, then with 50 DEG C of hot water injection 25min。

In step 4), the condition of secondary degreasing is：The pH=4 of weakly acidic solution, soaking temperature are 50 DEG C, and soaking time is 3h；The addition of biology enzyme is the 0.1% of weakly alkaline solution weight, and biology enzyme is by Candida lipalytica Lipase (0.5 ten thousand IU/ G) and papain (200,000 IU/g) is according to 1:0.05 weight ratio is mixed to prepare.

In step 5), the process of secondary flushing is：First with 85 DEG C of hot water injection 20min, then rushed with 60 DEG C of hot water 15min is washed, finally with 50 DEG C of hot water injection 30min.

Claims

1. a kind of degreasing method of animal wool, it is characterised in that comprise the following steps：

1) skin and flesh, the dust of animal wool attachment are removed；

3) once flushing is carried out to animal wool with hot water；

2. degreasing method according to claim 1, it is characterised in that in step 2), the condition of a degreasing is：It is weak PH=8~10 of alkaline solution, soaking temperature are 60~70 DEG C, and soaking time is 30~60min；The addition of compound degreasing agent For the 1%~5% of weakly alkaline solution weight, compound degreasing agent is by prodan, polyvinyl alcohol and sodium carbonate according to 1:2~5:3 ~8 weight ratio is mixed to prepare.

3. degreasing method according to claim 1, it is characterised in that in step 3), the process of the once flushing is：First With 60~70 DEG C of 5~10min of hot water injection, then with 45~55 DEG C of 15~25min of hot water injection.

4. degreasing method according to claim 1, it is characterised in that：In step 4), the condition of the secondary degreasing is：It is weak PH=4~6 of acid solution, soaking temperature are 40~60 DEG C, and soaking time is 1~3h；The addition of biology enzyme is alkalescent The 0.1%~1% of solution weight, biology enzyme is by Candida lipalytica Lipase and papain according to 1:0.05~0.1 Weight ratio is mixed to prepare.

5. degreasing method according to claim 4, it is characterised in that：The activity of the Candida lipalytica Lipase is 0.3~10,000 IU/g, the activity of the papain is 5~200,000 IU/g.

6. degreasing method according to claim 1, it is characterised in that：In step 5), the process of the secondary flushing is：First With 80~90 DEG C of 10~20min of hot water injection, then with 60~80 DEG C of 10~20min of hot water injection, finally with 40~60 DEG C 20~30min of hot water injection.