CN115354443B

CN115354443B - Production process of antistatic cashmere flocculus

Info

Publication number: CN115354443B
Application number: CN202211032558.9A
Authority: CN
Inventors: 马晓飞; 刘洪印; 荣小瑛; 刘平平; 张瑞
Original assignee: Jixiang Sanbao High Tech Textile Co Ltd
Current assignee: Jixiang Sanbao High Tech Textile Co Ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-08-11
Anticipated expiration: 2042-08-26
Also published as: CN115354443A

Abstract

The invention relates to a production process of antistatic cashmere flocculus, which belongs to the technical field of flocculus, and comprises the following steps: first, preparing conductive fibers: adding polysulfone and conductive filler into N, N-dimethylacetamide, stirring for 10 hours at the temperature of 20 ℃ to obtain spinning solution, and spinning the obtained spinning solution to obtain conductive fibers; step two, stacking and compositing conductive fibers and cashmere in sequence, wherein the conductive fibers form a conductive fiber layer, and the cashmere forms a cashmere layer; the cashmere layer is positioned between the two conductive fiber layers, the conductive fiber layers and the cashmere layer are bonded through an adhesive, and trimming is performed to obtain the antistatic cashmere flocculus. The invention overcomes the defects of cashmere, improves the integral strength of the flakes, improves the antibacterial property of the antistatic cashmere flakes through the antibacterial structure of the binder, and meets different requirements.

Description

Production process of antistatic cashmere flocculus

Technical Field

The invention belongs to the technical field of flakes, and particularly relates to a production process of antistatic cashmere flakes.

Background

In the natural material flocculus, cashmere is used as a natural thermal insulation material, and the three-dimensional curled space shape of the natural material flocculus not only endows the cashmere flocculus with excellent thermal insulation performance, but also enables the cashmere flocculus to have fluffy and soft handfeel and outstanding elasticity. Besides, the cashmere flocculus also has better moisture permeability, so that the cashmere flocculus has certain antistatic property, but correspondingly, the antistatic property is greatly affected by humidity, the moisture permeability can reduce the warmth retention property to a certain extent, and wool is a protein fiber which is easy to be damaged by worms in a humid environment and is easy to grow bacteria.

Disclosure of Invention

In order to solve the technical problems in the background art, the invention provides a production process of antistatic cashmere flakes.

The aim of the invention can be achieved by the following technical scheme:

the production process of the antistatic cashmere flocculus comprises the following steps:

first, preparing conductive fibers: adding polysulfone and conductive filler into N, N-dimethylacetamide, stirring for 10 hours at the temperature of 20 ℃ to obtain spinning solution, and spinning the obtained spinning solution to obtain conductive fibers;

step two, stacking and compositing conductive fibers and cashmere in sequence, wherein the conductive fibers form a conductive fiber layer, and the cashmere forms a cashmere layer; the cashmere layer is positioned between the two conductive fiber layers, the conductive fiber layers and the cashmere layer are bonded through an adhesive, and trimming is performed to obtain the antistatic cashmere flocculus.

Further, the dosage mass ratio of polysulfone, conductive filler and N, N-dimethylacetamide is 20-22:10-11:120.

further, the conductive filler is prepared by the steps of:

mixing deionized water and bamboo charcoal powder, performing ultrasonic dispersion for 30min, adding dopamine and tris (hydroxymethyl) aminomethane, fully mixing, adding hydrochloric acid to adjust the pH value to 8.5, performing ultrasonic dispersion for 5min, stirring for 8h at 20 ℃, and performing centrifugal drying after stirring is finished to obtain the conductive filler. The polydopamine formed by the dopamine on the surface of the bamboo charcoal powder has high-efficiency free radical scavenging performance, and can delay fiber aging; the main component of the conductive filler is bamboo charcoal powder, and the bamboo charcoal powder is added into a spinning solution to prepare conductive fibers for improving the antistatic property of the fibers, and the surface of the bamboo charcoal powder is treated to obtain the dispersibility of the conductive filler in the raw materials.

Further, the dosage mass ratio of deionized water, bamboo charcoal powder, dopamine and tris (hydroxymethyl) aminomethane is 200:0.2:0.24.

further, the temperature in the spinning process is 25+/-2 ℃, the relative humidity is 80+/-5%, the spinning voltage is 35kV, the rotating speed of the receiving roller is 20r/min, and the receiving distance is 20cm.

Further, the adhesive is prepared by the steps of:

mixing sodium dodecyl benzene sulfonate, alkylphenol ethoxylates, vinyl trimethoxy silane, deionized water, sodium hydroxide aqueous solution and octamethyl cyclotetrasiloxane, stirring for 30min, heating to 65 ℃, stirring for 3h, cooling to 20 ℃, regulating the pH value to be neutral by ammonia water to obtain emulsion, heating the emulsion to 70 ℃ under stirring, adding an initiator, adding acrylic ester and allyl trimethyl ammonium chloride, reacting for 1h after dropwise adding, heating to 75-80 ℃, and cooling to obtain the adhesive.

Further, alkylphenol ethoxylates are 10% of the mass of octamethyl cyclotetrasiloxane, and the concentration of the sodium hydroxide aqueous solution is 2mol/L; the dosage ratio of the sodium dodecyl benzene sulfonate, the vinyl trimethoxy silane, the deionized water, the sodium hydroxide aqueous solution and the octamethyl cyclotetrasiloxane is 30g:5g:300mL:4mL:70g; the dosage ratio of the emulsion, the initiator, the acrylic ester and the allyl trimethyl ammonium chloride is 300mL:0.12g:10g:3g.

Further, the methodThe density of the conductive fiber layer is 4+/-1 mg/cm ³ The thickness is 6+/-1 mm; the density of the cashmere layer is 2+/-0.5 mg/cm ³ The thickness is 11+/-1 mm.

The invention has the beneficial effects that:

in order to solve the problems existing in the cashmere flocculus, the invention makes up the defects existing in the cashmere by compounding the cashmere with other fibers, and improves the integral strength of the flocculus; the conductive fiber prepared by the invention has the effects of conducting and dissipating charges and preventing charge accumulation, so that the conductive fiber has an antistatic effect, and the conductive filler in the conductive fiber is subjected to dopamine treatment, so that the dispersibility is improved, and the diffusion of charges is facilitated; in addition, the anti-static cashmere flocculus is bonded by the adhesive, and the antibacterial property of the anti-static cashmere flocculus is improved by the antibacterial structure of the adhesive, so that different requirements are met.

Detailed Description

The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

Preparing conductive filler:

mixing deionized water and bamboo charcoal powder, performing ultrasonic dispersion for 30min, adding dopamine and tris (hydroxymethyl) aminomethane, fully mixing, adding hydrochloric acid to adjust the pH value to 8.5, performing ultrasonic dispersion for 5min, stirring for 8h at 20 ℃, and performing centrifugal drying after stirring is finished to obtain the conductive filler. The main component of the conductive filler is bamboo charcoal powder, and the bamboo charcoal powder is added into a spinning solution to prepare conductive fibers for improving the antistatic property of the fibers, and the surface of the bamboo charcoal powder is treated to obtain the dispersibility of the conductive filler in the raw materials. The dosage mass ratio of deionized water, bamboo charcoal powder, dopamine and tris (hydroxymethyl) aminomethane is 200:0.2:0.24.

example 2

Preparing an adhesive:

mixing sodium dodecyl benzene sulfonate, alkylphenol ethoxylates, vinyl trimethoxy silane, deionized water, sodium hydroxide aqueous solution and octamethyl cyclotetrasiloxane, stirring for 30min, heating to 65 ℃, stirring for 3h, cooling to 20 ℃, regulating the pH value to be neutral by ammonia water to obtain emulsion, heating the emulsion to 70 ℃ under stirring, adding an initiator, adding acrylic ester and allyl trimethyl ammonium chloride, reacting for 1h after dropwise adding, heating to 75-80 ℃, and cooling to obtain the adhesive. Wherein the alkylphenol ethoxylate is 10% of the octamethyl cyclotetrasiloxane by mass, and the concentration of the sodium hydroxide aqueous solution is 2mol/L; the dosage ratio of the sodium dodecyl benzene sulfonate, the vinyl trimethoxy silane, the deionized water, the sodium hydroxide aqueous solution and the octamethyl cyclotetrasiloxane is 30g:5g:300mL:4mL:70g; the dosage ratio of the emulsion, the initiator, the acrylic ester and the allyl trimethyl ammonium chloride is 300mL:0.12g:10g:3g.

Example 3

first, preparing conductive fibers: adding polysulfone and the conductive filler prepared in the embodiment 1 into N, N-dimethylacetamide, stirring for 10 hours at the temperature of 20 ℃ to obtain spinning solution, spinning the obtained spinning solution, wherein the temperature is 25+/-2 ℃, the relative humidity is 80+/-5%, the spinning voltage is 35kV, the rotating speed of a receiving roller is 20r/min, and the receiving distance is 20cm; obtaining conductive fibers; polysulfone is PSU-3500 Suwei (Shanghai) limited; the dosage mass ratio of polysulfone, conductive filler and N, N-dimethylacetamide is 20:10:120;

step two, stacking and compositing conductive fibers and cashmere in sequence, wherein the conductive fibers form a conductive fiber layer, and the cashmere forms a cashmere layer; the cashmere layer is positioned between the two conductive fiber layers, the conductive fiber layers and the cashmere layer are bonded by the adhesive prepared in the embodiment 2, and trimming is carried out to obtain the antistatic cashmere flocculus. The density of the conductive fiber layer is 4+/-1 mg/cm ³ The thickness is 6+/-1 mm; the density of the cashmere layer is 2+/-0.5 mg/cm ³ Thickness of 11+ -1 mm. The amount of binder used was 9g/m ² 。

Example 4

first, preparing conductive fibers: adding polysulfone and the conductive filler prepared in the embodiment 1 into N, N-dimethylacetamide, stirring for 10 hours at the temperature of 20 ℃ to obtain spinning solution, spinning the obtained spinning solution, wherein the temperature is 25+/-2 ℃, the relative humidity is 80+/-5%, the spinning voltage is 35kV, the rotating speed of a receiving roller is 20r/min, and the receiving distance is 20cm; obtaining conductive fibers; polysulfone is PSU-3500 Suwei (Shanghai) limited; the dosage mass ratio of polysulfone, conductive filler and N, N-dimethylacetamide is 21:10.5:120;

step two, stacking and compositing conductive fibers and cashmere in sequence, wherein the conductive fibers form a conductive fiber layer, and the cashmere forms a cashmere layer; the cashmere layer is positioned between the two conductive fiber layers, the conductive fiber layers and the cashmere layer are bonded by the adhesive prepared in the embodiment 2, and trimming is carried out to obtain the antistatic cashmere flocculus. The density of the conductive fiber layer is 4+/-1 mg/cm ³ The thickness is 6+/-1 mm; the density of the cashmere layer is 2+/-0.5 mg/cm ³ The thickness is 11+/-1 mm. The amount of binder used was 9g/m ² 。

Example 5

first, preparing conductive fibers: adding polysulfone and the conductive filler prepared in the embodiment 1 into N, N-dimethylacetamide, stirring for 10 hours at the temperature of 20 ℃ to obtain spinning solution, spinning the obtained spinning solution, wherein the temperature is 25+/-2 ℃, the relative humidity is 80+/-5%, the spinning voltage is 35kV, the rotating speed of a receiving roller is 20r/min, and the receiving distance is 20cm; obtaining conductive fibers; polysulfone is PSU-3500 Suwei (Shanghai) limited; the dosage mass ratio of polysulfone, conductive filler and N, N-dimethylacetamide is 22:11:120;

secondly, stacking and compounding conductive fibers and cashmere in sequence, forming a conductive fiber layer by the conductive fibers,forming a cashmere layer by cashmere; the cashmere layer is positioned between the two conductive fiber layers, the conductive fiber layers and the cashmere layer are bonded by the adhesive prepared in the embodiment 2, and trimming is carried out to obtain the antistatic cashmere flocculus. The density of the conductive fiber layer is 4+/-1 mg/cm ³ The thickness is 6+/-1 mm; the density of the cashmere layer is 2+/-0.5 mg/cm ³ The thickness is 11+/-1 mm. The amount of binder used was 9g/m ² 。

Comparative example 1

Compared with example 5, the conductive filler is mixed into the bamboo charcoal powder in example 1, and the rest raw materials and the preparation process are kept unchanged.

Samples prepared in examples 3-5 and comparative example 1 were tested for antistatic properties according to GB/T12703-1991 brief introduction to Fabric static test methods, and resistivity was tested; antibacterial performance is tested according to national standard GB/T20944.3-2008, and the strain is tested: coli (ATCC 25922);

TABLE 1

	Example 3	Example 4	Example 5	Comparative example 1
					Resistivity/Ω·cm	7.5×10 ⁵	7.4×10 ⁵	7.4×10 ⁵	10.2×10 ⁵
Bacteriostatic rate/%	98.4	98.6	98.5	98.5

From the test results, the antistatic cashmere flocculus prepared by the invention has good antistatic property and antibacterial property.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.

Claims

1. The production process of the antistatic cashmere flocculus is characterized by comprising the following steps of:

first, preparing conductive fibers: adding polysulfone and conductive filler into N, N-dimethylacetamide, stirring for 10 hours at the temperature of 20 ℃ to obtain spinning solution, and spinning the obtained spinning solution to obtain conductive fibers; the dosage mass ratio of polysulfone, conductive filler and N, N-dimethylacetamide is 20-22:10-11:120; the temperature is 25+/-2 ℃, the relative humidity is 80+/-5%, the spinning voltage is 35kV, the rotating speed of the receiving roller is 20r/min, and the receiving distance is 20cm in the spinning process;

step two, stacking and compositing conductive fibers and cashmere in sequence, wherein the conductive fibers form a conductive fiber layer, and the cashmere forms a cashmere layer; the cashmere layer is positioned between the two conductive fiber layers, the conductive fiber layers and the cashmere layer are bonded through an adhesive, and trimming is carried out to obtain antistatic cashmere flakes;

the conductive filler is prepared by the following steps:

mixing deionized water and bamboo charcoal powder, performing ultrasonic dispersion for 30min, adding dopamine and tris (hydroxymethyl) aminomethane, fully mixing, adding hydrochloric acid to adjust the pH value to 8.5, performing ultrasonic dispersion for 5min, and stirring at 20 ℃ for 8h to obtain conductive filler;

the adhesive is prepared by the following steps:

mixing sodium dodecyl benzene sulfonate, alkylphenol ethoxylates, vinyl trimethoxy silane, deionized water, sodium hydroxide aqueous solution and octamethyl cyclotetrasiloxane, stirring for 30min, then heating to 65 ℃, stirring for 3h, then cooling to 20 ℃, regulating the pH value to be neutral by ammonia water to obtain emulsion, heating the emulsion to 70 ℃ under stirring, adding an initiator, adding acrylic ester and allyl trimethyl ammonium chloride, after dropwise adding, heating to 75-80 ℃ for reacting for 1h, and cooling to obtain an adhesive; the alkylphenol polyoxyethylene ether accounts for 10% of the mass of the octamethyl cyclotetrasiloxane, and the concentration of the sodium hydroxide aqueous solution is 2mol/L; the dosage ratio of the sodium dodecyl benzene sulfonate, the vinyl trimethoxy silane, the deionized water, the sodium hydroxide aqueous solution and the octamethyl cyclotetrasiloxane is 30g:5g:300mL:4mL:70g; the dosage ratio of the emulsion, the initiator, the acrylic ester and the allyl trimethyl ammonium chloride is 300mL:0.12g:10g:3g;

the density of the conductive fiber layer is 4+/-1 mg/cm ³ The thickness is 6+/-1 mm; the density of the cashmere layer is 2+/-0.5 mg/cm ³ The thickness is 11+/-1 mm.