Preparation method and application of textile anti-allergy material

Abstract

The invention relates to the field of home textiles. A preparation method of a textile anti-allergy material comprises the following steps: step 1, mixing polymer polyol and absolute ethyl alcohol, then adding maleic anhydride, methacrylic acid and hydroxyethyl acrylate, then adding isocyanate, then adding a mixture of polyvinyl alcohol and sorbitol, and then adding dibenzoyl peroxide to obtain a product A; 2, firstly, diatomite powder is added into water; then, adding a pH regulator solution; then, polyhydric alcohol is added, and a product B is obtained; and 3, mixing the product A with the product B to obtain the textile anti-allergy material. The obtained anti-allergy fabric has the capacity of inhibiting or removing allergens and reducing anaphylactic reaction, meanwhile, the softness, the air permeability and the skin-friendly performance of the fabric are kept, and it is ensured that the added anti-allergy components cannot generate irritation or side effects on the skin of the human body.

Description

Technical Field

[0001] The present invention relates to the field of home textiles, and particularly to anti-allergy materials. Background Art

[0002] In the field of textiles, how to effectively integrate anti-allergy components or materials into textiles to enable them to have the ability to inhibit or remove allergens and reduce allergic reactions has been a long-standing problem to be solved. Summary of the Invention

[0003] The purpose of the present invention is to provide a preparation method of a textile anti-allergy material to solve the above technical problems.

[0004] The purpose of the present invention is also to provide an application of the textile anti-allergy material to prepare anti-allergy textile fibers.

[0005] The purpose of the present invention is also to provide another application of the textile anti-allergy material to prepare anti-allergy fabrics.

[0006] The technical problems solved by the present invention can be realized by adopting the following technical solutions:

[0007] A preparation method of a textile anti-allergy material, comprising the following steps, characterized in that,

[0008] Step 1: Step 1, mix polymer polyol and absolute ethanol; Step 2, add maleic anhydride, methacrylic acid and 2-hydroxyethyl acrylate to make maleic anhydride, methacrylic acid, 2-hydroxyethyl acrylate and polymer polyol undergo a preliminary esterification reaction; Step 3, add isocyanate to make isocyanate crosslink or polymerize with polymer polyol, maleic anhydride, methacrylic acid and 2-hydroxyethyl acrylate; Step 4, when the system viscosity increases to 2-3 times the initial value and the temperature is stable at 80°C ± 2°C, add a mixture of polyvinyl alcohol and sorbitol, and continue to stir and mix; Step 5, when the system viscosity reaches 3-5 times the initial viscosity, the temperature reaches 85°C ± 2°C, and after continuing for 15-30 min, add benzoyl peroxide; Step 6, after the reaction is completed, cool the reactant to room temperature to obtain the final product A;

[0009] Step 2: Step a, add diatomite powder to water and stir to make it uniformly dispersed in water; Step b, adjust the pH to neutral; Step c, add polyol and continue to stir until the polyol is completely dissolved to obtain product B;

[0010] Step 3: Mix product A and product B in a mass ratio of 1:1-3, stir evenly to obtain the textile anti-allergy material.

[0011] Preferably, the reaction temperature in Step 1 is 90°C - 100°C, the reaction temperature in Step 2 is 100°C - 120°C, the reaction temperature in Step 3 is 100°C - 110°C; the reaction temperature in Step 4 is 80°C - 100°C; the reaction temperature in Step 5 is 100°C - 110°C.

[0012] Preferably, in Step a, the purity of the diatomaceous earth powder is above 99% and the particle size is less than 10um.

[0013] Preferably, in Step b, the pH value is adjusted to 5 - 7 by adding citric acid or sodium hydroxide solution.

[0014] Preferably, the polyol is ethylene glycol with an addition amount of 50 - 80 g / L; alternatively, the polyol is propylene glycol with an addition amount of 40 - 60 g / L; alternatively, the polyol is glycerol with an addition amount of 30 - 50 g / L.

[0015] Application of the textile anti - allergy material: Add the textile anti - allergy material to textile fibers to obtain anti - allergy textile fibers.

[0016] Application of the textile anti - allergy material: Electrophoretically deposit the textile anti - allergy material on the fabric to obtain anti - allergy fabric.

[0017] Beneficial effects:

[0018] 1. High - efficiency anti - allergy performance: Through specific chemical reaction steps, the present invention effectively integrates anti - allergy components into the polymer matrix to form a textile anti - allergy material with high fastness. The textile anti - allergy material is evenly attached to the fabric through electrophoretic deposition technology, ensuring that the fabric has the ability to continuously inhibit or remove allergens.

[0019] 2. Maintain the original properties of the fabric: During the preparation process of the present invention, through fine chemical reactions and deposition techniques, it is ensured that the softness, air permeability and skin - friendliness of the textile are not affected. The anti - allergy components used and the deposition methods have been strictly screened and optimized to avoid irritation or side effects on the human skin.

[0020] 3. Wide application: The present invention can be applied to various textiles made of natural fibers, chemical fibers and regenerated fibers, with wide applicability. The anti - allergy textiles can be used to make various clothing, household items and medical supplies, etc., to meet people's needs for healthy textiles.

[0021] 4. The anti - allergy fabric obtained by the present invention has the ability to inhibit or remove allergens, reduce allergic reactions, while maintaining the softness, air permeability and skin - friendliness of the textile, and ensuring that the added anti - allergy components will not cause irritation or side effects to the human skin. Specific embodiments

[0023] Preparation method of Product A:

[0024] Step 1: Mix the polymer polyol and absolute ethanol. Preferably, add the polymer polyol and absolute ethanol into a reaction kettle, wherein the mass ratio of absolute ethanol is 20%-30%. Heat to 90°C - 100°C and stir to completely dissolve it. There is a stirrer in the reaction kettle. The stirrer includes a stirring shaft, and stirring blades are equidistantly arranged on the stirring shaft. Thus, the mixing speed of the polymer polyol and absolute ethanol is accelerated by the stirrer. The stirring and mixing in the present invention are carried out at a high temperature. In order to reduce the steam overflow, the stirring shaft passes through the top of the reaction kettle and extends into the accommodating cavity of the reaction kettle. A curved surface cover is sleeved on the stirring shaft. The curved surface cover is located above the stirring blades in the accommodating cavity. The opening of the curved surface cover faces downward, and there is a gap between the outer edge of the curved surface cover and the inner side wall of the accommodating cavity. The steam rises and condenses and accumulates when it reaches the curved surface cover, and then falls under the action of gravity, or is thrown towards the side wall of the accommodating cavity under the action of centrifugal force, and then slides down along the side wall.

[0025] Step 2: Slowly add maleic anhydride, methacrylic acid and hydroxyethyl acrylate. When adding, preferably first add maleic anhydride at a dropping rate controlled at 0.5 - 2.0 ml / min. After reacting for 30 - 60 min, then add the mixture of methacrylic acid and hydroxyethyl acrylate at a dropping rate of 1.0 - 3.0 ml / min. Continue to stir and heat to 100°C - 120°C and react for 0.5 h - 1.5 h to make these monomers undergo a preliminary esterification reaction with the polymer polyol. The part of the stirring shaft above the curved surface cover is hollow, and liquid outlets are opened on the side wall of the hollow part. The liquid outlets are at the bottom of the middle part and above the curved surface cover. Thus, the hollow part is used for adding liquid. In Step 2, maleic anhydride, methacrylic acid and hydroxyethyl acrylate are slowly added by using the hollow part. The added liquid reaches the bottom of the hollow part along the hollow part, and then passes through the liquid outlet to reach the curved surface cover. On the one hand, the newly added liquid has a lower temperature, which can cool the curved surface cover, or cool the steam at the gap between the curved surface cover and the reaction kettle, thereby improving the condensation effect of the steam at the curved surface cover and further reducing the steam overflow. On the other hand, the curved surface cover throws out the newly added liquid, so that the newly added liquid enters the liquid below the curved surface cover more evenly. The stirring shaft can be composed of two parts, the upper part is a hollow structure and the lower part is a solid structure. There are internal threads at the lower port of the upper part and external threads at the upper end of the lower part, and the two are threadedly connected. Long strip-shaped liquid outlets are also equidistantly arranged at the lower port of the upper part, and the external threads are located below the liquid outlets. During use, the distance from the upper end face of the lower part to the top of the liquid outlet can be adjusted by the degree of screwing in the thread, so as to adjust the size of the liquid outlet. The curved surface cover is fixed on the upper part, preferably at the position corresponding to the internal thread. Thus, when adjusting the liquid outlet by the degree of screwing in the thread, the position from the bottom of the liquid outlet to the curved surface cover can be adjusted.

[0026] Step 3: After the preliminary esterification reaction, isocyanate is gradually added. Preferably, it is first added dropwise at a dropping rate controlled at 0.1 - 0.3 ml / min for 10 minutes, and then added dropwise at a dropping rate controlled at 0.4 - 0.6 ml / min until addition is complete. And the addition rate is controlled to avoid local overheating or violent reaction. The reaction is continued at 100°C - 110°C for 1.5 h - 3 h to cause crosslinking or polymerization reaction between the isocyanate, the polymeric polyol and the monomer.

[0027] Step 4: After the crosslinking or polymerization reaction proceeds to a certain extent, preferably, the system viscosity increases to 2 - 3 times the initial value and the temperature stabilizes at 80°C ± 2°C. A mixture of polyvinyl alcohol and sorbitol is slowly added. Preferably, the addition rate is 0.5 - 1.5 ml / min, and the mass ratio of polyvinyl alcohol to sorbitol is 1:1 - 1:2. Stirring is continued and heated to 80°C - 100°C, and the reaction is carried out for 2 h - 4 h to fully dissolve these two substances and participate in the reaction.

[0028] Step 5: After the viscosity of the reaction system further increases and the temperature stabilizes, preferably, when the system temperature reaches 85°C ± 2°C and lasts for 15 - 30 min, and the system viscosity reaches 3 - 5 times the initial viscosity, benzoyl peroxide is added as an initiator. Preferably, the mass proportion of benzoyl peroxide accounts for 0.5% - 1.0% of the total mass of the monomers. It is rapidly heated (heated to 100°C within 5 - 10 min) to 100°C - 110°C for reaction, and maintained at this temperature for 2 h - 4 h to cause further polymerization reaction of the remaining monomers and polymers.

[0029] Step 6: After the reaction is completed, the reactants are cooled to room temperature to obtain the final product A.

[0030] Preparation method of product B:

[0031] Step a: Weigh the water in the stirring container. Preferably, 70% - 80% of the total formulated water volume is added. And the stirrer is started for pre-stirring to form a vortex of water to facilitate the uniform addition of subsequent raw materials. Then, diatomaceous earth powder is slowly added. Preferably, it is added in multiple batches in small amounts while stirring, with the criterion of no powder flying and no local agglomeration. Preferably, the diatomaceous earth powder accounts for 10% - 20% of the total formulated mass. The stirring speed should be moderate (preferably 300 - 600 rpm) to ensure the uniform dispersion of the diatomaceous earth powder in water. Diatomaceous earth powder with a purity of over 99% and a D50 particle size less than 10 μm is selected to ensure no impurities and large agglomerates. The diatomaceous earth powder is sieved to remove large particles and impurities to ensure its uniformity. At the same time, the diatomaceous earth powder is dried in an oven at 80 - 100°C for 2 - 4 hours to remove the moisture and volatile substances therein.

[0032] Step b: Then gradually add the pH regulator solution, with a dosage of about 5 - 50 ml / L in the system. Stir while adding until the required pH range is reached. At this time, a pH meter should be used to monitor the pH value of the mixed system in real time to ensure it is within the target range. Preferably, according to the target pH value being neutral (5 - 7), citric acid or sodium hydroxide solution can be selected. Prepare the pH regulator into a solution with an appropriate concentration, preferably 0.5 - 1.0 mol / L, for easy subsequent addition and uniform mixing.

[0033] Step c: Add polyols, which can be ethylene glycol, propylene glycol, glycerol, etc. Preferably, the polyol is ethylene glycol with an addition amount of 50 - 80 g / L; alternatively, the polyol is propylene glycol with an addition amount of 40 - 60 g / L; or the polyol is glycerol with an addition amount of 30 - 50 g / L. Without special pretreatment, directly weigh the required amount of polyol for standby. Use deionized water or distilled water to ensure no impurity and microbial contamination. Continue stirring, and control the temperature between 15 - 40 °C to ensure the reaction proceeds within an appropriate temperature range. The stirring time should be determined according to the viscosity of the mixed system, the rotation speed of the stirrer, and the mixing effect. Generally, stirring for 30 - 60 minutes can ensure that all components are fully and uniformly mixed. If the viscosity of the mixed system is high or a longer reaction time is required, the stirring time can be appropriately extended. Use an efficient stirrer, such as a planetary stirrer, high-speed disperser, etc., to ensure the uniformity and stability of the mixed system. The rotation speed of the stirrer should be adjusted according to the viscosity of the mixed system to avoid excessive rotation speed causing powder flying or local overheating. At the same time, the stirrer should have good sealing performance to prevent moisture and air from entering the mixed system. After the above mixing and stirring steps, a uniform, stable, and compliant product B is obtained.

[0034] Preparation method of textile anti-allergy material:

[0035] Mix product A and product B in a mass ratio of 1:1 - 3, and stir evenly to obtain the textile anti-allergy material.

[0036] Preparation of anti-allergy textile fibers: The textile anti-allergy material can be added to textile fibers by electrophoresis to obtain anti-allergy textile fibers. It can also be added to textile fibers by adding it to textile fiber raw materials to obtain anti-allergy textile fibers. Other physical addition methods can also be used.

[0037] Preparation of anti - allergy fabric: Preferably, the anti - allergy fabric is obtained by electrophoretic deposition on the fabric. The specific steps are as follows: In an insulating device, the fabric to be treated (one or a blended fabric of natural fiber, chemical fiber, and regenerated fiber) is placed between the positive electrode and the negative electrode prepared from carbon nanotubes. Its thickness is controlled between 5 - 20 mm to ensure sufficient conductivity and mechanical strength, and it is connected to a DC power supply. Among them, the sizes of the positive electrode and the negative electrode are exactly the same as the size of the fabric, and the shapes are also the same to ensure uniform electric field distribution and improve the electrophoretic deposition effect. The fabric is between the positive electrode and the negative electrode, and the three are in an up - down position. The distance between the carbon nanotube electrode and the fabric is controlled between 50 - 100 mm to optimize the electric field strength and deposition efficiency. In the insulating device, the anti - allergy material is injected by vacuum injection to remove the bubbles in the container, ensure that the sol completely wets the electrodes and the fabric, and improve the uniformity and density of the deposition layer. Turn on the DC power supply and adjust the voltage to between 5 - 10 volts to control the speed and uniformity of electrophoretic deposition. Electrophoretic deposition of the anti - allergy material on the fabric is carried out, and the clear liquid in the container is regularly extracted and new anti - allergy material is added to maintain the stability of the concentration of the anti - allergy material and the deposition effect. The fabric after electrophoretic deposition is taken out and dried. The drying temperature ranges from 80 - 160 °C until the weight loss stops, and the anti - allergy fabric for textiles is obtained.

[0038] Through specific chemical reaction steps, the present invention effectively integrates the anti - allergy components into the polymer matrix to form a high - fastness textile anti - allergy material. The textile anti - allergy material is evenly attached to the fabric through electrophoretic deposition technology, ensuring that the fabric has the ability to continuously inhibit or remove allergens. The test results of the anti - allergy fabric obtained by the present invention are as follows:

[0039]

[0040] During the preparation process of the present invention, through fine chemical reactions and deposition techniques, it is ensured that the softness, breathability, and skin - friendliness of the textiles are not affected. The anti - allergy components and deposition methods used have been strictly screened and optimized to avoid irritation or side effects on the human skin. The test results of the anti - allergy fabric obtained by the present invention are as follows:

[0041] Antihistamine material (o.w.f%) Relative hand feeling value Softness Air permeability (mm / s) 0 0.00 30.51 ＞100 1.0 0.32 29.58 ＞100 2.0 1.21 28.34 ＞100

[0042] The present invention can be applied to various textiles made of natural fibers, chemical fibers, and regenerated fibers, and has wide applicability. The anti - allergy textiles can be used to make various clothing, household items, medical supplies, etc., to meet people's needs for healthy textiles.

[0043] The anti-allergy fabric obtained by the present invention has the ability to inhibit or remove allergens and reduce allergic reactions, while maintaining the softness, breathability and skin-friendly nature of textiles, and ensuring that the added anti-allergy components do not cause irritation or side effects to human skin.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A preparation method of a textile anti - allergic material, comprising the following steps, characterized in that, Step 1: Step 1, mix polymer polyol and absolute ethanol; Step 2, add maleic anhydride, methacrylic acid and 2 - hydroxyethyl acrylate, and make maleic anhydride, methacrylic acid, 2 - hydroxyethyl acrylate and polymer polyol undergo a preliminary esterification reaction; Step 3, add isocyanate, and make isocyanate undergo a cross - linking or polymerization reaction with polymer polyol, maleic anhydride, methacrylic acid and 2 - hydroxyethyl acrylate; Step 4, when the viscosity of the system increases to 2 - 3 times the initial value and the temperature is stable at 80°C ± 2°C, add a mixture of polyvinyl alcohol and sorbitol, and continue to stir and mix; Step 5, when the viscosity of the system reaches 3 - 5 times the initial viscosity, the temperature reaches 85°C ± 2°C, and after 15 - 30 min, add benzoyl peroxide; Step 6, after the reaction is completed, cool the reactant to room temperature to obtain the final product A; Step 2: Step a, add diatomite powder to water, and stir to make it uniformly dispersed in water; Step b, adjust the pH to neutral; Step c, add polyol, and continue to stir until the polyol is completely dissolved to obtain product B; Step 3: Mix product A and product B in a mass ratio of 1:1 - 3, stir evenly to obtain the textile anti - allergic material.

2. The preparation method of a textile anti-allergy material according to claim 1, characterized in that The reaction temperature of Step 1 is 90°C - 100°C, the reaction temperature of Step 2 is 100°C - 120°C, the reaction temperature of Step 3 is 100°C - 110°C; the reaction temperature of Step 4 is 80°C - 100°C; the reaction temperature of Step 5 is 100°C - 110°C.

3. The preparation method of a textile anti-allergy material according to claim 1, characterized in that, In Step a, the purity of the diatomite powder is above 99% and the particle size is less than 10 μm.

4. The preparation method of a textile anti-allergy material according to claim 1, characterized in that, In Step b, the pH value is adjusted to 5 - 7 by adding citric acid or sodium hydroxide solution.

5. The preparation method of a textile anti-allergy material according to claim 1, characterized in that, The polyol is ethylene glycol, and the addition amount is 50 - 80 g / L; or, the polyol is propylene glycol, and the addition amount is 40 - 60 g / L; or, the polyol is glycerol, and the addition amount is 30 - 50 g / L.

6. Application of textile anti-allergy materials, characterized in that, Using the preparation method of a textile anti - allergic material described in any one of claims 1 - 5 to prepare a textile anti - allergic material, and adding the textile anti - allergic material to textile fibers to obtain anti - allergic textile fibers.

7. Application of textile anti-allergy materials, characterized in that, Using the preparation method of a textile anti - allergic material described in any one of claims 1 - 5 to prepare a textile anti - allergic material, and electrophoretically depositing the textile anti - allergic material on a fabric to obtain an anti - allergic fabric.

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