阅读说明：本技术 一种防雾霾窗帘及其制备方法 (Haze-preventing curtain and preparation method thereof ) 是由 陈怀斌 于 2021-01-21 设计创作，主要内容包括：本发明公开了一种防雾霾窗帘及其制备方法,包括改性纤维和调理剂。分纤增大了麻纤维的长宽比和孔隙率,增加麻纤维对大气中固体颗粒的吸附能力,绒毛增大了表面积,为固体颗粒的留存提供了场所；静电感应使得微小颗粒在靠近带电物体时,会在静电力的作用下异号电荷相吸,小颗粒物会被吸附在带电体上,实现面料对大气中固体颗粒的吸附拦截；纳米二氧化硅被包覆在水凝胶内部,日光强烈时,可以散射阳光,减少阳光的通过率,有效降低室内的温度,对大气固体颗粒有吸附作用的同时,可以将静电包覆在窗帘内部,阻挡静电力作用到易燃物的表面引起危险,并且纳米级的水凝胶不会影响窗帘的实用性能。(The invention discloses an anti-haze curtain and a preparation method thereof. The fiber distribution increases the length-width ratio and the porosity of the fibrilia, increases the adsorption capacity of the fibrilia on solid particles in the atmosphere, increases the surface area of the fluff, and provides a place for the retention of the solid particles; when the tiny particles are close to a charged object, the static induction enables the different-sign charges to attract each other under the action of static force, and the small particles are adsorbed on the charged object, so that the adsorption and interception of the fabric on solid particles in the atmosphere are realized; nanometer silica is by the cladding inside the aquogel, and when sunlight was strong, can the scattering sunshine, reduce the percent of pass of sunshine, effectively reduce indoor temperature, when having the adsorption effect to the atmosphere solid particle, can be with the static cladding inside the (window) curtain, block that electrostatic force from arousing danger to the surface of inflammables is used to nanometer hydrogel can not influence the practicality of (window) curtain.)

1. The haze-preventing curtain is characterized by comprising the following raw materials in parts by weight: 30-40 parts of modified fiber and 5-10 parts of conditioner.

2. The haze preventing curtain of claim 1, wherein: the modified fiber is prepared by adding nano silicon dioxide and 20% sodium carboxymethyl cellulose aqueous solution into pre-modified fiber which is subjected to fiber separation and carboxymethylation by taking epichlorohydrin as a cross-linking agent to form nano hydrogel on the surface of the fiber.

3. The haze preventing curtain of claim 2, wherein: the pre-modified fiber is prepared by co-spinning fibrilia and polyethylene terephthalate and then carrying out flash explosion treatment.

4. The haze preventing curtain as claimed in claim 3, wherein: the denier of the hemp fiber and the polyethylene terephthalate are 6.5 g/denier and 4.3 g/denier respectively.

5. The haze preventing curtain of claim 4, wherein: the conditioner IS respectively softener IS, antibacterial agent ammonium dihydrogen phosphate, ultraviolet resistant agent uv-1130, flame retardant hexabromous water dispersoid and mildew preventive 8-hydroxyquinoline copper.

6. The preparation method of the haze-preventing curtain is characterized by comprising the following specific steps of:

(1) the preparation method of the pre-modified fibrilia comprises the following steps: the pre-modified fiber is obtained by co-spinning fibrilia and polyethylene terephthalate and then carrying out flash explosion treatment;

(2) the preparation method of the modified fibrilia comprises the following steps: the modified fiber is modified fibrilia prepared by adding nano silicon dioxide and 20% sodium carboxymethylcellulose aqueous solution into pre-modified fiber which is subjected to fiber separation and carboxymethylation by taking epichlorohydrin as a cross-linking agent to form nano hydrogel on the surface of the fiber;

a. the water flow splitting implementation method comprises the following steps: impacting the fibers with water flow under pressure;

b. the preparation method of the carboxymethylation and the hydrogel comprises the following steps: more carboxyl groups are introduced into the molecular chain of the cellulose; the carboxymethylated fiber is taken as a raw material, epichlorohydrin is taken as a cross-linking agent, nano silicon dioxide and 20% sodium carboxymethyl cellulose aqueous solution are added, and nano hydrogel is prepared on the surface of the modified fibrilia through fiber separation;

(3) the preparation method of the anti-haze curtain comprises the following steps: and (3) after the modified fibrilia obtained in the step (2) is subjected to double twisting, spinning, dyeing, color fixing and weaving, treating the fabric by using a conditioner, and thus obtaining the haze-preventing curtain.

7. The method for preparing the haze-preventing curtain as claimed in claim 6, wherein the haze-preventing curtain comprises: the preparation method of the pre-modified fibrilia in the step (1) comprises the following steps: after 4.3 denier of filament yarn is extruded from polyethylene terephthalate, the filament yarn and 6.5 denier of fibrilia are respectively subjected to opening pretreatment, carded into polyethylene terephthalate raw slivers and fibrilia raw slivers on a carding machine, and combined on a drawing frame to prepare the pre-modified fibrilia.

8. The method for preparing the haze-preventing curtain as claimed in claim 6, wherein the haze-preventing curtain comprises: in the step (2), the flash explosion treatment method in the step a comprises the following steps: soaking 20g of pre-modified fibrilia in 100ml of distilled water, soaking for 15h at room temperature, reacting for 5min by using an ultracentrifuge (2000rpm) to remove redundant water, adjusting the ratio of the pre-modified fibrilia to the water to be 1:1, putting 10g of water-containing pre-modified fibrilia into a flash blaster heated to 150 ℃, closing a container, introducing hot steam (the saturation pressure corresponding to the hot steam is 1.0-4.9 MPa) controlled at 150 ℃ and 5.0MPa into the flash blaster, closing a steam input valve after the pressure is constant, then suddenly opening a spherical valve connected with an exhaust pipe, instantly exploding for 0.2 seconds, introducing the exploded cellulose into a collector by virtue of pressure difference, and cleaning and drying the material to finish the flash blasting treatment.

9. The method for preparing the haze-preventing curtain as claimed in claim 6, wherein the haze-preventing curtain comprises: in the step (2), the carboxymethylation and hydrogel preparation method in the step b comprises the following steps: pulping the fiber after fiber separation, wherein the pulping degree is 33 DEG SR, adding a sodium hydroxide-ethanol solution for soaking to enable the mass ratio of the fiber to the sodium hydroxide to be 1:1, stirring for 10min, then adding a monochloroacetic acid-ethanol solution for heating reaction to enable the mass ratio of the fiber to the monochloroacetic acid to be 1:1.03, setting the temperature to be 79 ℃, and neutralizing and washing the fiber after carboxymethylation by using deionized water and glacial acetic acid after reacting for 3 h; and then soaking the pre-modified fiber after carboxymethylation in water, stirring for 10min, adding 20% sodium carboxymethylcellulose aqueous solution and nano silicon dioxide powder, uniformly mixing, dropwise adding 6.85g of epoxy chloropropane at room temperature, stirring for 2h, placing in a drying oven, drying at 50 ℃ for 12h, fully reacting, repeatedly soaking and cleaning with pure water to remove unreacted epoxy chloropropane until the swelling is balanced, and thus obtaining the modified fiber.

10. The method for preparing the haze-preventing curtain as claimed in claim 6, wherein the haze-preventing curtain comprises: the preparation method of the haze preventing curtain in the step (3) comprises the following steps: after the modified cotton fiber obtained in the step (2) is subjected to double twisting, spinning, dyeing, color fixing and weaving, a fabric is treated by using a conditioner to obtain the modified cotton fiber with the gram weight of 260-290 g/m²The haze-preventing curtain.

Technical Field

The invention relates to the technical field of haze prevention fabrics, in particular to a haze prevention curtain and a preparation method thereof.

Background

In recent years, with the acceleration of the industrialization level and the progress of the scientific level, the living standard of human beings is improved, and the air pollution is more and more serious. Atmospheric particulate matter in the air can enter the body through the ways of respiratory system inhalation, food intake, skin contact and the like, and great threat is caused to the body health. The main components of the atmospheric particulate matter include the following three types: inorganic organic matters and living matters, heavy metals, sulfate, nitrate, polycyclic aromatic hydrocarbon and other substances which have toxic action on human bodies are carried in the organic matters, and the metabolic substances can bring certain damage to respiratory systems, digestive systems and cardiovascular and cerebrovascular systems of the human bodies after entering the human bodies, thereby increasing the risks of people suffering from lung diseases, stomach diseases and skin diseases. The existence of particulate matter in the atmosphere also can bring certain influence to atmospheric environment, and the solid tiny particle can long distance migration, and dwell time is long, and long-time contact can increase the risk of suffering from the skin disease. At present, many areas in China are suffering from haze, and the PM2.5 exceeds the standard for many times, so that the seriously polluted atmosphere directly influences the life of human beings, and meanwhile, the very physical health of the human beings is greatly threatened.

At present, daily necessities such as curtains and fabrics can also be prepared to have a blocking effect on haze, most of the daily necessities are electrostatic adsorption, but in hot and dry summer, static can bring certain danger, so that the preparation of the haze-preventing curtain capable of effectively avoiding the danger of static while preventing haze is necessary.

Disclosure of Invention

The invention aims to provide an anti-haze curtain to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: the haze-preventing curtain comprises the following raw materials in parts by weight:

30-40 parts of modified fiber and 5-10 parts of conditioner.

Preferably, the modified fiber is prepared by adding nano silicon dioxide and 20% sodium carboxymethyl cellulose aqueous solution into pre-modified fiber by taking epichlorohydrin as a cross-linking agent after fiber separation and carboxymethylation treatment to form nano hydrogel on the surface of the fiber.

Preferably, the pre-modified fiber is prepared by co-spinning fibrilia and polyethylene terephthalate and then performing flash explosion treatment.

Preferably, the denier of the hemp fiber and the polyethylene terephthalate are 6.5 g/denier and 4.3 g/denier, respectively.

Preferably, the conditioner IS respectively a softener IS, an antibacterial agent ammonium dihydrogen phosphate, an ultraviolet resistant agent uv-1130, a flame retardant hexabromous water dispersoid and a mildew preventive 8-hydroxyquinoline copper.

The invention provides a preparation method of an anti-haze curtain, which comprises the following specific steps:

(1) the preparation method of the pre-modified fibrilia comprises the following steps: the pre-modified fiber is obtained by co-spinning fibrilia and polyethylene terephthalate and then carrying out flash explosion treatment;

(2) the preparation method of the modified fibrilia comprises the following steps: the modified fiber is modified fibrilia prepared by adding nano silicon dioxide and 20% sodium carboxymethylcellulose aqueous solution into pre-modified fiber which is subjected to fiber separation and carboxymethylation by taking epichlorohydrin as a cross-linking agent to form nano hydrogel on the surface of the fiber;

a. the water flow splitting implementation method comprises the following steps: impacting the fibers with water flow under pressure;

b. the preparation method of the carboxymethylation and the hydrogel comprises the following steps: more carboxyl groups are introduced into the molecular chain of the cellulose; the carboxymethylated fiber is taken as a raw material, epichlorohydrin is taken as a cross-linking agent, nano silicon dioxide and 20% sodium carboxymethyl cellulose aqueous solution are added, and nano hydrogel is prepared on the surface of the modified fibrilia through fiber separation;

(3) the preparation method of the anti-haze curtain comprises the following steps: and (3) after the modified fibrilia obtained in the step (2) is subjected to double twisting, spinning, dyeing, color fixing and weaving, treating the fabric by using a conditioner, and thus obtaining the haze-preventing curtain.

Preferably, the preparation method of the pre-modified fibrilia in the step (1) comprises the following steps: after 4.3 denier of filament yarn is extruded from polyethylene terephthalate, the filament yarn and 6.5 denier of fibrilia are respectively subjected to opening pretreatment, carded into polyethylene terephthalate raw slivers and fibrilia raw slivers on a carding machine, and combined on a drawing frame to prepare the pre-modified fibrilia.

Preferably, in the step (2), the treatment method of the flash explosion in the step a comprises the following steps: soaking 20g of pre-modified fibrilia in 100ml of distilled water, soaking for 15h at room temperature, reacting for 5min by using an ultracentrifuge (2000rpm) to remove redundant water, adjusting the ratio of the pre-modified fibrilia to the water to be 1:1, putting 10g of water-containing pre-modified fibrilia into a flash blaster heated to 150 ℃, closing a container, introducing hot steam (the saturation pressure corresponding to the hot steam is 1.0-4.9 MPa) controlled at 150 ℃ and 5.0MPa into the flash blaster, closing a steam input valve after the pressure is constant, then suddenly opening a spherical valve connected with an exhaust pipe, instantly exploding for 0.2 seconds, introducing the exploded cellulose into a collector by virtue of pressure difference, and cleaning and drying the material to finish the flash blasting treatment.

Preferably, in the step (2), the carboxymethylation and hydrogel preparation method in the step b comprises the following steps: pulping the fiber after fiber separation, wherein the pulping degree is 33 DEG SR, adding a sodium hydroxide-ethanol solution for soaking to enable the mass ratio of the fiber to the sodium hydroxide to be 1:1, stirring for 10min, then adding a monochloroacetic acid-ethanol solution for heating reaction to enable the mass ratio of the fiber to the monochloroacetic acid to be 1:1.03, setting the temperature to be 79 ℃, and neutralizing and washing the fiber after carboxymethylation by using deionized water and glacial acetic acid after reacting for 3 h; and then soaking the pre-modified fiber after carboxymethylation in water, stirring for 10min, adding 20% sodium carboxymethylcellulose aqueous solution and nano silicon dioxide powder, uniformly mixing, dropwise adding 6.85g of epoxy chloropropane at room temperature, stirring for 2h, placing in a drying oven, drying at 50 ℃ for 12h, fully reacting, repeatedly soaking and cleaning with pure water to remove unreacted epoxy chloropropane until the swelling is balanced, and thus obtaining the modified fiber.

Preferably, the preparation method of the haze-preventing curtain in the step (3) comprises the following steps: after the modified cotton fiber obtained in the step (2) is subjected to double twisting, spinning, dyeing, color fixing and weaving, a fabric is treated by using a conditioner to obtain the modified cotton fiber with the gram weight of 260-290 g/m²The haze-preventing curtain.

Compared with the prior art, the invention has the following beneficial effects:

the fibrilia is obtained from various fibrilia plants, has good functions of moisture absorption, moisture dispersion and ventilation, co-spins the polyethylene terephthalate and the fibrilia, so that the polyethylene terephthalate is wrapped inside the fibrilia, and then carries out flash explosion treatment on the co-spun fibers to prepare the pre-modified fibers; after co-spinning, the polyethylene terephthalate enhances the tear resistance of the fibrilia, so that the mechanical property of the prepared fabric is stronger, because the hygroscopicity of the polyethylene terephthalate is extremely poor, water molecules can only enter the fibrilia, and therefore, during flash explosion, the fibrilia is dispersed by pressure relief at the moment after pressurization, a plurality of fiber distribution are generated, the length-width ratio and the porosity of the fibrilia are increased, the adsorption capacity of the fibrilia on solid particles in the atmosphere is increased, the surface area of the fibrilia is increased by fluff of the fibrilia, and a place is provided for the retention of the solid particles; and can produce the electrostatic force during the friction of polyethylene terephthalate, when the tiny particle is close to electrified object, because electrostatic induction, the particulate matter that is close to electrified object one end can respond to the electric charge opposite with electrified object electrical property, because the effect that opposite sign electric charge attracts mutually, the tiny particle can be adsorbed on electrified object, realizes that the surface fabric is to the absorption interception of the solid particle in the atmosphere.

Performing water-flow fiber dividing and carboxymethylation treatment on the pre-modified fiber to perform fiber dividing carboxymethylation on the fibrilia, then soaking the fiber subjected to carboxymethylation in water, adding nano silicon dioxide and 20% sodium carboxymethylcellulose aqueous solution by taking epichlorohydrin as a cross-linking agent, and coating the nano silicon dioxide in hydrogel when gel is formed to prepare the modified fiber; after the fibrilia is subjected to secondary fiber splitting by using water flow, the length-width ratio of the fibrilia is maximized, the bearing capacity of solid particles in the atmosphere is increased, and meanwhile, a place is provided for the existence of hydrogel; a large amount of nanometer aquogel distribute on the surface of surface fabric, can absorb the moisture in the atmosphere, keep the state of moisture saturation constantly, have adsorption to atmosphere solid particle when, can be with the static cladding inside the (window) curtain, block that electrostatic force to arouse danger with the surface of inflammables to nanometer aquogel can not influence the practicality of (window) curtain.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides the technical scheme that: the haze-preventing curtain comprises the following raw materials in parts by weight:

30-40 parts of modified fiber and 5-10 parts of conditioner.

Preferably, the modified fiber is prepared by adding nano silicon dioxide and 20% sodium carboxymethyl cellulose aqueous solution into pre-modified fiber by taking epichlorohydrin as a cross-linking agent after fiber separation and carboxymethylation treatment to form nano hydrogel on the surface of the fiber.

Preferably, the pre-modified fiber is prepared by co-spinning fibrilia and polyethylene terephthalate and then performing flash explosion treatment.

Preferably, the denier of the hemp fiber and the polyethylene terephthalate are 6.5 g/denier and 4.3 g/denier, respectively.

Preferably, the conditioner IS respectively a softener IS, an antibacterial agent ammonium dihydrogen phosphate, an ultraviolet resistant agent uv-1130, a flame retardant hexabromous water dispersoid and a mildew preventive 8-hydroxyquinoline copper.

The invention provides a preparation method of an anti-haze curtain, which comprises the following specific steps:

(1) the preparation method of the pre-modified fibrilia comprises the following steps: the pre-modified fiber is obtained by co-spinning fibrilia and polyethylene terephthalate and then carrying out flash explosion treatment;

(2) the preparation method of the modified fibrilia comprises the following steps: the modified fiber is modified fibrilia prepared by adding nano silicon dioxide and 20% sodium carboxymethylcellulose aqueous solution into pre-modified fiber which is subjected to fiber separation and carboxymethylation by taking epichlorohydrin as a cross-linking agent to form nano hydrogel on the surface of the fiber;

a. the water flow splitting implementation method comprises the following steps: impacting the fibers with water flow under pressure;

b. the preparation method of the carboxymethylation and the hydrogel comprises the following steps: more carboxyl groups are introduced into the molecular chain of the cellulose; the carboxymethylated fiber is taken as a raw material, epichlorohydrin is taken as a cross-linking agent, nano silicon dioxide and 20% sodium carboxymethyl cellulose aqueous solution are added, and nano hydrogel is prepared on the surface of the modified fibrilia through fiber separation;

(3) the preparation method of the anti-haze curtain comprises the following steps: and (3) after the modified fibrilia obtained in the step (2) is subjected to double twisting, spinning, dyeing, color fixing and weaving, treating the fabric by using a conditioner, and thus obtaining the haze-preventing curtain.

Preferably, the preparation method of the pre-modified fibrilia in the step (1) comprises the following steps: after 4.3 denier of filament yarn is extruded from polyethylene terephthalate, the filament yarn and 6.5 denier of fibrilia are respectively subjected to opening pretreatment, carded into polyethylene terephthalate raw slivers and fibrilia raw slivers on a carding machine, and combined on a drawing frame to prepare the pre-modified fibrilia.

Preferably, in the step (2), the treatment method of the flash explosion in the step a comprises the following steps: soaking 20g of pre-modified fibrilia in 100ml of distilled water, soaking for 15h at room temperature, reacting for 5min by using an ultracentrifuge (2000rpm) to remove redundant water, adjusting the ratio of the pre-modified fibrilia to the water to be 1:1, putting 10g of water-containing pre-modified fibrilia into a flash blaster heated to 150 ℃, closing a container, introducing hot steam (the saturation pressure corresponding to the hot steam is 1.0-4.9 MPa) controlled at 150 ℃ and 5.0MPa into the flash blaster, closing a steam input valve after the pressure is constant, then suddenly opening a spherical valve connected with an exhaust pipe, instantly exploding for 0.2 seconds, introducing the exploded cellulose into a collector by virtue of pressure difference, and cleaning and drying the material to finish the flash blasting treatment.

Preferably, in the step (2), the carboxymethylation and hydrogel preparation method in the step b comprises the following steps: pulping the fiber after fiber separation, wherein the pulping degree is 33 DEG SR, adding a sodium hydroxide-ethanol solution for soaking to enable the mass ratio of the fiber to the sodium hydroxide to be 1:1, stirring for 10min, then adding a monochloroacetic acid-ethanol solution for heating reaction to enable the mass ratio of the fiber to the monochloroacetic acid to be 1:1.03, setting the temperature to be 79 ℃, and neutralizing and washing the fiber after carboxymethylation by using deionized water and glacial acetic acid after reacting for 3 h; and then soaking the pre-modified fiber after carboxymethylation in water, stirring for 10min, adding 20% sodium carboxymethylcellulose aqueous solution and nano silicon dioxide powder, uniformly mixing, dropwise adding 6.85g of epoxy chloropropane at room temperature, stirring for 2h, placing in a drying oven, drying at 50 ℃ for 12h, fully reacting, repeatedly soaking and cleaning with pure water to remove unreacted epoxy chloropropane until the swelling is balanced, and thus obtaining the modified fiber.

Preferably, the preparation method of the haze-preventing curtain in the step (3) comprises the following steps: after the modified cotton fiber obtained in the step (2) is subjected to double twisting, spinning, dyeing, color fixing and weaving, a fabric is treated by using a conditioner to obtain the modified cotton fiber with the gram weight of 260-290 g/m²The haze-preventing curtain.

Example 1: a haze-preventing curtain I:

the anti-haze curtain comprises the following components in parts by weight:

33 parts of modified fiber and 6 parts of conditioner.

The preparation method of the curtain comprises the following steps:

(1) the preparation method of the pre-modified fibrilia comprises the following steps: the pre-modified fiber is obtained by co-spinning fibrilia and polyethylene terephthalate and then carrying out flash explosion treatment;

(2) the preparation method of the modified fibrilia comprises the following steps: the modified fiber is modified fibrilia prepared by adding nano silicon dioxide and 20% sodium carboxymethylcellulose aqueous solution into pre-modified fiber which is subjected to fiber separation and carboxymethylation by taking epichlorohydrin as a cross-linking agent to form nano hydrogel on the surface of the fiber;

a. the water flow splitting implementation method comprises the following steps: impacting the fibers with water flow under pressure;

b. the preparation method of the carboxymethylation and the hydrogel comprises the following steps: more carboxyl groups are introduced into the molecular chain of the cellulose; the carboxymethylated fiber is taken as a raw material, epichlorohydrin is taken as a cross-linking agent, nano silicon dioxide and 20% sodium carboxymethyl cellulose aqueous solution are added, and nano hydrogel is prepared on the surface of the modified fibrilia through fiber separation;

(3) the preparation method of the anti-haze curtain comprises the following steps: and (3) after the modified fibrilia obtained in the step (2) is subjected to double twisting, spinning, dyeing, color fixing and weaving, treating the fabric by using a conditioner, and thus obtaining the haze-preventing curtain.

Preferably, the preparation method of the pre-modified fibrilia in the step (1) comprises the following steps: after 4.3 denier of filament yarn is extruded from polyethylene terephthalate, the filament yarn and 6.5 denier of fibrilia are respectively subjected to opening pretreatment, carded into polyethylene terephthalate raw slivers and fibrilia raw slivers on a carding machine, and combined on a drawing frame to prepare the pre-modified fibrilia.

Preferably, in the step (2), the treatment method of the flash explosion in the step a comprises the following steps: soaking 20g of pre-modified fibrilia in 100ml of distilled water for 15h at room temperature, reacting for 5min by using an ultracentrifuge (2000rpm) to remove redundant water, adjusting the water ratio of the pre-modified fibrilia to 1:1, putting 10g of water-containing pre-modified fibrilia into a flash blaster heated to 150 ℃, closing a container, introducing hot steam (the saturated pressure corresponding to the hot steam is 2.7MPa) controlled at 150 ℃ and 5.0MPa into the flash blaster, closing a steam input valve after the pressure is constant, then suddenly opening a spherical valve connected with an exhaust pipe, carrying out flash blasting for 0.2 second, introducing the flashed cellulose into a collector by virtue of differential pressure, and cleaning and drying the material to complete the flash blasting treatment.

Preferably, in the step (2), the carboxymethylation and hydrogel preparation method in the step b comprises the following steps: pulping the fiber after fiber separation, wherein the pulping degree is 33 DEG SR, adding a sodium hydroxide-ethanol solution for soaking to enable the mass ratio of the fiber to the sodium hydroxide to be 1:1, stirring for 10min, then adding a monochloroacetic acid-ethanol solution for heating reaction to enable the mass ratio of the fiber to the monochloroacetic acid to be 1:1.03, setting the temperature to be 79 ℃, and neutralizing and washing the fiber after carboxymethylation by using deionized water and glacial acetic acid after reacting for 3 h; and then soaking the pre-modified fiber after carboxymethylation in water, stirring for 10min, adding 20% sodium carboxymethylcellulose aqueous solution and nano silicon dioxide powder, uniformly mixing, dropwise adding 6.85g of epoxy chloropropane at room temperature, stirring for 2h, placing in a drying oven, drying at 50 ℃ for 12h, fully reacting, repeatedly soaking and cleaning with pure water to remove unreacted epoxy chloropropane until the swelling is balanced, and thus obtaining the modified fiber.

Preferably, the preparation method of the haze-preventing curtain in the step (3) comprises the following steps: after the modified cotton fiber obtained in the step (2) is subjected to double twisting, spinning, dyeing, color fixing and weaving, a fabric is treated by using a conditioner to obtain the fabric with the gram weight of 273g/m²The haze-preventing curtain.

Example 2: a haze-preventing curtain II:

the anti-haze curtain comprises the following components in parts by weight:

38 parts of modified fiber and 8 parts of conditioner.

The preparation method of the curtain comprises the following steps:

(1) the preparation method of the pre-modified fibrilia comprises the following steps: the pre-modified fiber is obtained by co-spinning fibrilia and polyethylene terephthalate and then carrying out flash explosion treatment;

(2) the preparation method of the modified fibrilia comprises the following steps: the modified fiber is modified fibrilia prepared by adding nano silicon dioxide and 20% sodium carboxymethylcellulose aqueous solution into pre-modified fiber which is subjected to fiber separation and carboxymethylation by taking epichlorohydrin as a cross-linking agent to form nano hydrogel on the surface of the fiber;

a. the water flow splitting implementation method comprises the following steps: impacting the fibers with water flow under pressure;

b. the preparation method of the carboxymethylation and the hydrogel comprises the following steps: more carboxyl groups are introduced into the molecular chain of the cellulose; the carboxymethylated fiber is taken as a raw material, epichlorohydrin is taken as a cross-linking agent, nano silicon dioxide and 20% sodium carboxymethyl cellulose aqueous solution are added, and nano hydrogel is prepared on the surface of the modified fibrilia through fiber separation;

(3) the preparation method of the anti-haze curtain comprises the following steps: and (3) after the modified fibrilia obtained in the step (2) is subjected to double twisting, spinning, dyeing, color fixing and weaving, treating the fabric by using a conditioner, and thus obtaining the haze-preventing curtain.

Preferably, the preparation method of the pre-modified fibrilia in the step (1) comprises the following steps: after 4.3 denier of filament yarn is extruded from polyethylene terephthalate, the filament yarn and 6.5 denier of fibrilia are respectively subjected to opening pretreatment, carded into polyethylene terephthalate raw slivers and fibrilia raw slivers on a carding machine, and combined on a drawing frame to prepare the pre-modified fibrilia.

Preferably, in the step (2), the treatment method of the flash explosion in the step a comprises the following steps: soaking 20g of pre-modified fibrilia in 100ml of distilled water for 15h at room temperature, reacting for 5min by using an ultracentrifuge (2000rpm) to remove redundant water, adjusting the water ratio of the pre-modified fibrilia to 1:1, putting 10g of water-containing pre-modified fibrilia into a flash blaster heated to 150 ℃, closing a container, introducing hot steam (the saturation pressure corresponding to the hot steam is 3.8MPa) controlled at 150 ℃ and 5.0MPa into the flash blaster, closing a steam input valve after the pressure is constant, then suddenly opening a spherical valve connected with an exhaust pipe, carrying out flash blasting for 0.2 second, introducing the flashed cellulose into a collector by virtue of differential pressure, and cleaning and drying the material to complete the flash blasting treatment.

Preferably, in the step (2), the carboxymethylation and hydrogel preparation method in the step b comprises the following steps: pulping the fiber after fiber separation, wherein the pulping degree is 33 DEG SR, adding a sodium hydroxide-ethanol solution for soaking to enable the mass ratio of the fiber to the sodium hydroxide to be 1:1, stirring for 10min, then adding a monochloroacetic acid-ethanol solution for heating reaction to enable the mass ratio of the fiber to the monochloroacetic acid to be 1:1.03, setting the temperature to be 79 ℃, and neutralizing and washing the fiber after carboxymethylation by using deionized water and glacial acetic acid after reacting for 3 h; and then soaking the pre-modified fiber after carboxymethylation in water, stirring for 10min, adding 20% sodium carboxymethylcellulose aqueous solution and nano silicon dioxide powder, uniformly mixing, dropwise adding 6.85g of epoxy chloropropane at room temperature, stirring for 2h, placing in a drying oven, drying at 50 ℃ for 12h, fully reacting, repeatedly soaking and cleaning with pure water to remove unreacted epoxy chloropropane until the swelling is balanced, and thus obtaining the modified fiber.

Preference is given toThe preparation method of the haze-preventing curtain in the step (3) comprises the following steps: after the modified cotton fiber obtained in the step (2) is subjected to double twisting, spinning, dyeing, color fixing and weaving, a fabric is treated by using a conditioner to obtain the modified cotton fiber with the gram weight of 286g/m²The haze-preventing curtain.

Comparative example 1:

the formulation of comparative example 1 was the same as example 1. The preparation method of the haze-proof curtain only differs from the preparation method of the haze-proof curtain in the embodiment 1 in that the treatment of the step (1) is not carried out, and the rest of the preparation steps are the same as the preparation steps of the embodiment 1.

Comparative example 2:

comparative example 2 was formulated as in example 1. The preparation method of the haze-proof curtain only differs from the preparation method of the haze-proof curtain in the embodiment 1 in that the treatment of the step a in the step (2) is not carried out, and the rest of the preparation steps are the same as the preparation steps in the embodiment 1.

Comparative example 3:

the formulation of comparative example 3 was the same as example 1. The preparation method of the haze-proof curtain only differs from the preparation method of the haze-proof curtain in the embodiment 1 in that the treatment of the step b in the step (2) is not carried out, and the rest of the preparation steps are the same as the preparation steps in the embodiment 1.

Test example 1:

the fabrics prepared in example 1, example 2 and comparative example 3 were subjected to haze adsorption test, and 20cm of the fabrics prepared in example 1, example 2 and comparative example 3 were cut out²Adopt smog case simulation haze environment, for the convenience of the haze lasts the effect to the surface fabric, place the surface fabric in the airtight case of self-control organic glass, the box size is 210mm x 140mm x 180 mm.

The smog chamber simulates the atmospheric haze reaction conditions that the relative humidity is 50 percent, the temperature is 30 ℃, and Al is added₂O₃＝20μg/m³0.5ppm toluene, 15ppb NO, NO₂＝30ppb，SO₂＝52.5pp，NH₃105ppb, UV light of 40h and a box volume of 2m³。

And introducing gas into the closed box body after the lamp in the smoke box is turned on and the gas reacts for 30 min. The experimental conditions are kept consistent, and the haze environment is simulated to act on the fabric for a week. The experimental results are as follows:

	example 1	Example 2	Comparative example 3
				Weight of the Fabric	0.0273g	0.0286g	0.0251g
Weight after adsorption	1.0381g	1.0326g	0.0816g
				Weight of dust	1.0108g	1.0040g	0.0565g

As can be seen from the above table, the ability of the fabric of the composition of example 1 to adsorb solid particles in the atmosphere is better, the ability of the fabric of the composition of example 2 to adsorb solid particles in the atmosphere is not much different from that of the composition of example 1, and the ability of the fabric of the composition of comparative example 3 to adsorb solid particles in the atmosphere is much worse than that of the fabric of examples 1 and 2, and the fundamental reason is that the fabric of the composition of comparative example 3 is prepared without carboxymethylation and hydrogel treatment, which indicates that the fiber composition increases the aspect ratio and porosity of the fibrilia, increases the adsorption ability of the fibrilia to solid particles in the atmosphere, and provides a retention place for the fibrilia, and a large amount of nano hydrogel is distributed on the surface of the fabric, so that the fabric can absorb moisture in the atmosphere, constantly maintains a state of moisture saturation, and has an adsorption effect on solid particles in the atmosphere.

Test example 2:

the anti-tear comparison of the fabrics prepared in the examples 1, 2 and 1 shows that the higher the tear strength, the stronger the mechanical property of the anti-haze curtain, and the following experimental results:

the tearing strength is one of the standards for embodying the good and bad mechanical properties of the fabric, the higher the tearing strength is, the stronger the mechanical property of the fabric is, as can be seen from the above table, the tearing indexes of the fabric of the components of the embodiment 1 and the embodiment 2 are not very different, and the tearing strength of the fabric of the comparative example 1 is much poorer than that of the embodiment, which shows that the polyethylene terephthalate enhances the tearing resistance of the fibrilia, so that the mechanical property of the prepared fabric is stronger, because the hygroscopicity of the polyethylene terephthalate is extremely poor, water molecules can only enter the inside of the fibrilia, only the fibrilia is subjected to flash explosion to separate the fibrilia, the mechanical strength of the polyethylene terephthalate is not changed, the separate fibrilia is subjected to staggered knotting, and the tearing strength of the fabric is enhanced to a certain extent.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.