CN111286826A

CN111286826A - Composite spinning method

Info

Publication number: CN111286826A
Application number: CN201811496935.8A
Authority: CN
Inventors: 张路; 陈军; 沈献萍; 张继才; 陈燕; 张博红
Original assignee: Hubei Miaohu Textile Co ltd
Current assignee: Hubei Miaohu Textile Co ltd
Priority date: 2018-12-07
Filing date: 2018-12-07
Publication date: 2020-06-16

Abstract

The invention relates to a composite spinning method, which comprises the following steps: modifying cotton fibers, namely adding the cotton fibers into the reaction solution, and treating to obtain cationic cotton fibers; flax fiber pretreatment, namely removing impurities from the flax fiber, stretching the flax fiber, and spraying an oiling agent; the method comprises the following steps of (1) performing primary processing on slivers, mixing the flax fibers with the cationic cotton fibers to prepare rough slivers, combining the rough slivers, processing the combined slivers into a first sliver through a combing process, and preparing a second sliver by using wood fibers; drawing and spinning, namely drawing the first sliver and the second sliver to form drawn sliver, and spinning the drawn sliver to obtain spun yarn. The cotton fiber obtained by modification of the composite spinning method provided by the invention has higher cationic degree, the adsorption of the cotton fiber to dye is greatly improved, the dyeing effect of cotton yarn is improved, and the obtained blended yarn has high strength, good setting property, good spinnability and excellent moisture absorption and permeability.

Description

Composite spinning method

Technical Field

The invention relates to the field of spinning methods, in particular to a composite spinning method.

Background

Cotton is one of the most important raw materials in the textile industry, and depending on the spinning process, clothes of different quality are produced. The cotton clothing is made of cotton, firstly, cotton fibers are processed into cotton yarns through a spinning process, and the cotton yarns are good in fiber straightness, less in impurity formation, good in luster, even in evenness and high in strength, and are mainly used for weaving high-grade fabrics. However, when cotton yarn is dyed, the adsorption capacity to dye is limited, and the dyeing effect is not ideal. The ramie yarn has the characteristics of cool and breathable property because of being cool and like ramie.

Wood fiber is a cellulose fiber extracted from naturally growing wood. Because the wood fiber has good air permeability, natural antibacterial, bacteriostatic, mite-removing, deodorizing and ultraviolet-resistant functions, the produced cloth has less hairiness and is well paid attention to consumers. However, bamboo fiber has the disadvantages of low strength, unsatisfactory setting and the like, and pure bamboo fiber has the disadvantages of difficult spinning, low fabric strength and the like.

Flax, one of the earliest natural fibers used by human beings, is more comfortable, stiff and smooth in wearability, softer and more elegant in color tone and smoother in hand feeling compared with textiles such as ramie, hemp, apocynum venetum and the like, has excellent performances of moisture absorption, heat dissipation, health care, bacteriostasis, antifouling, antistatic and ultraviolet resistance, and is known as 'the fiber queen of natural fibers'. However, the flax fibers have a low technical count and a large difference in length, which makes the processing of the flax yarns difficult.

Disclosure of Invention

In view of the above, there is a need to provide a composite spinning method that addresses at least one of the problems mentioned above.

A composite spinning process comprising the steps of:

modifying cotton fibers, namely uniformly mixing polyallylamine, NaOH and a reaction medium to form a reaction solution, adding the cotton fibers into the reaction solution, and washing the cotton fibers to be neutral after treatment to obtain cationic cotton fibers;

flax fiber pretreatment, namely removing impurities from the flax fiber, stretching, spraying an oil agent, and warehousing for 18-24 hours;

the method comprises the following steps of (1) performing primary processing on slivers, mixing the flax fibers with the cationic cotton fibers to prepare rough slivers, combining the rough slivers, processing the combined slivers into a first sliver through a combing process, and preparing a second sliver by using wood fibers;

drawing and spinning, namely drawing the first sliver and the second sliver to form drawn sliver, and spinning the drawn sliver to obtain spun yarn.

In one embodiment, the reaction medium is n-propanolamine.

In one embodiment, the reaction temperature of the cotton fibers and the reaction solution is 55 +/-2 ℃, and the reaction time is 3.5-4.5 h.

In one embodiment, the reacted cotton fibers are fully washed by pure water at 30-45 ℃ and neutralized to be neutral by 1g/L of glacial acetic acid.

In one embodiment, the linen fibers are 10-20 parts, the cationic cotton fibers are 8-18 parts, and the wood fibers are 15-20 parts by weight.

In one embodiment, the ratio of the polyallylamine, NaOH, and reaction medium is 3:2:1, in parts by weight.

According to the composite spinning method provided by the invention, the modified cotton fiber has higher cationic degree, the adsorption of the cotton fiber on dye is greatly improved, and the dyeing effect of cotton yarn is improved; the spinning process of the invention blends the wood fiber, the flax fiber and the cationic cotton fiber into the blended yarn, the prepared yarn integrates the respective advantages of the wood fiber, the flax fiber and the cationic cotton fiber, and the obtained blended yarn has high strength, good setting property, good spinnability and excellent moisture absorption and permeability.

Detailed Description

The embodiment of the invention provides a composite spinning method, which specifically comprises the following steps:

step S10: modifying cotton fibers, namely uniformly mixing polyallylamine, NaOH and a reaction medium to form a reaction solution, adding the cotton fibers into the reaction solution, and washing the cotton fibers to be neutral after treatment to obtain the cationic cotton fibers. Wherein the reaction medium adopts n-propanolamine, and other organic solvents with hygroscopic property can also be adopted. The reaction temperature of the cotton fiber and the reaction solution is preferably 55 +/-2 ℃, and the reaction time is 3.5-4.5 h. And fully washing the reacted cotton fibers by pure water at the temperature of 30-45 ℃, and neutralizing the cotton fibers to be neutral by using 1g/L of glacial acetic acid.

Step S20: flax fiber pretreatment, namely removing impurities from the flax fiber, stretching, spraying an oil agent, and warehousing for 18-24 hours.

Step S30: the sliver is primarily processed, the flax fiber and the cationic cotton fiber are mixed to prepare rough slivers, then the rough slivers are combined and processed into a first sliver through a combing process, and the wood fiber is used for preparing a second sliver.

Step S40: drawing and spinning, namely drawing the first sliver and the second sliver to form drawn sliver, and spinning the drawn sliver to obtain spun yarn.

According to a preferable scheme, the linen fibers are 10-20 parts by weight, the cationic cotton fibers are 8-18 parts by weight, and the wood fibers are 15-20 parts by weight.

In addition, the ratio of the polyallylamine to the NaOH to the reaction medium is 3:2:1 in parts by weight.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A composite spinning method, characterized by comprising the steps of:

2. A composite spinning process according to claim 1, characterised in that the reaction medium is n-propanolamine.

3. A composite spinning process according to claim 1, characterised in that: the reaction temperature of the cotton fiber and the reaction solution is 55 +/-2 ℃, and the reaction time is 3.5-4.5 h.

4. A composite spinning process according to claim 1, characterised in that: and fully washing the reacted cotton fibers by pure water at the temperature of 30-45 ℃, and neutralizing the cotton fibers to be neutral by using 1g/L of glacial acetic acid.

5. A composite spinning process according to claim 1, characterised in that: the cationic cotton fiber is prepared from 10-20 parts by weight of flax fiber, 8-18 parts by weight of cationic cotton fiber and 15-20 parts by weight of wood fiber.

6. The composite spinning method according to claim 1, wherein the ratio of the polyallylamine, the NaOH and the reaction medium is 3:2:1 in parts by weight.