Fabric softening agent and preparation method thereof

Abstract

The invention discloses a fabric softening agent which is characterized by comprising the following raw materials in parts by weight: 30-35 parts of stearic acid, 15-25 parts of fatty alcohol-polyoxyethylene ether, 5-8 parts of modified nano zinc oxide, 4-7 parts of an auxiliary regulating agent based on silica powder, 5-8 parts of citric acid, 4-7 parts of amino silicon oil, 3-6 parts of peregal and 25-30 parts of water. According to the fabric softening agent, the stearic acid and the fatty alcohol-polyoxyethylene ether are matched with the citric acid, the amino silicon oil and the peregal raw materials, and meanwhile, the added modified nano zinc oxide and the auxiliary regulating agent based on the silica powder are mutually blended and synergistic, so that the product softening agent is remarkable in fabric softening performance effect and good in acid corrosion resistance stability; meanwhile, the softening durability is poor, and the fabric is softened for a long time.

Description

Technical Field

[0001] The invention relates to the technical field of softeners, and in particular to a fabric softener and a preparation method thereof. Background Art

[0002] Softeners are a class of chemicals that can change the static and dynamic friction coefficients of fibers. When the static friction coefficient is changed, the hand feels smooth and easy to move on the fiber or fabric; when the dynamic friction coefficient is changed, the microstructures between fibers are easy to move relative to each other, that is, the fiber or fabric is easy to deform.

[0003] Existing softeners have poor softening performance on fabrics and poor acid and corrosion resistance, which further limits the use efficiency of the product. At the same time, the softening durability is poor, making it difficult to achieve long-term softening of fabrics, which limits the use efficiency of the product. Summary of the invention

[0004] In view of the defects of the prior art, the object of the present invention is to provide a fabric softener and a preparation method thereof to solve the problems raised in the above background technology.

[0005] The present invention solves the technical problem by adopting the following technical solution: The present invention provides a fabric softener, comprising the following raw materials in parts by weight: 30-35 parts of stearic acid, 15-25 parts of fatty alcohol polyoxyethylene ether, 5-8 parts of modified nano zinc oxide, 4-7 parts of auxiliary adjustment agent based on silicon micropowder, 5-8 parts of citric acid, 4-7 parts of amino silicone oil, 3-6 parts of peregrin, and 25-30 parts of water.

[0006] Preferably, the defoaming agent is the following raw materials in parts by weight: 32.5 parts of stearic acid, 20 parts of fatty alcohol polyoxyethylene ether, 6.5 parts of modified nano zinc oxide, 5.5 parts of auxiliary adjustment agent based on silicon micropowder, 6.5 parts of citric acid, 5.5 parts of amino silicone oil, 4.5 parts of peregrin, and 27.5 parts of water.

[0007] Preferably, the modification method of the modified nano zinc oxide is: S1: preheat the nano zinc oxide at 55-60°C for 10-20 minutes, and then mix it in a sufficient amount of 5% sodium lignin sulfonate solution to obtain a nano zinc oxide solution; S2: Preparation of modified solution: S21: mixing kaolin with a sufficient amount of dopamine hydrochloride solution to obtain a kaolin agent; S22: adding 2-5 parts of lanthanum oxide and 1-3 parts of nano-silica sol to 4-7 parts of sodium dodecylbenzene sulfonate solution, and then adding 3-5 parts of kaolin agent, and mixing well to obtain a modified solution; S3: stirring the nano zinc oxide liquid and the modified liquid for modification treatment, and after the stirring is completed, washing, filtering and drying are performed to obtain modified nano zinc oxide.

[0008] Preferably, the mass fraction of the dopamine hydrochloride solution is 2-5%; the mass fraction of the sodium dodecylbenzene sulfonate solution is 4-6%.

[0009] Preferably, the stirring speed of the stirring modification treatment is 550-750 r / min, and the stirring is 20-30 min.

[0010] Preferably, the mass ratio of the nano zinc oxide liquid and the modified liquid is (3-5):2.

[0011] Preferably, the preparation method of the auxiliary agent based on silicon powder is: S11: 4-7 parts of silicon micropowder, 1-3 parts of yttrium nitrate solution and 2-5 parts of silane coupling agent KH550 are uniformly mixed to obtain silicon micropowder agent; S12: mixing nano-magnesium oxide and sodium silicate solution having a mass fraction of 2-5% in a weight ratio of 5:3 and subjecting the mixture to ball milling, and then completing the ball milling to obtain nano-magnesium oxide liquid; 5-8 parts of nano magnesium oxide liquid, 2-4 parts of carboxymethyl cellulose, and 1-3 parts of sodium alginate solution are fully mixed to obtain a modified nano magnesium oxide agent; S13: subjecting silicon micropowder and modified nano magnesium oxide to ultrasonic modification in a weight ratio of 5:3, finishing the ultrasonic modification, filtering and drying to obtain an auxiliary agent based on silicon micropowder.

[0012] Preferably, the mass fraction of the yttrium nitrate solution is 2-4%; the mass fraction of the sodium alginate solution is 4-6%.

[0013] Preferably, the rotation speed of the mixing ball milling treatment in S12 is 750-850 r / min, and the ball milling is 20-30 min; the ultrasonic power of the ultrasonic modification treatment in S13 is 350-400 W, and the ultrasonic time is 25-35 min.

[0014] The invention also provides a method for preparing a fabric softener, comprising the following steps: adding raw materials into a stirrer in sequence for stirring at a stirring speed of 700-800 r / min for a stirring time of 35-45 min, and completing the stirring to obtain the fabric softener of the invention.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The fabric softener of the invention adopts stearic acid, fatty alcohol polyoxyethylene ether, citric acid, amino silicone oil and Pingpingjia raw materials, and modified nano zinc oxide and auxiliary adjusting agent based on silicon micropowder are added to coordinate with each other, the product softener has remarkable effect on fabric softening performance, and the softener has good acid corrosion resistance stability, while the softness durability is poor, and the fabric is softened for a long time; the nano zinc oxide is preheated and then treated with sodium lignin sulfonate solution to optimize its activity and dispersion, and kaolin is treated with dopamine hydrochloride solution and then treated with lanthanum oxide and other raw materials to prepare a modified liquid , use modified liquid to improve nano zinc oxide, optimize the performance enhancement effect of nano zinc oxide softener system, thereby improving softness stability and durability; the auxiliary adjuster based on silicon micropowder uses silicon micropowder through yttrium nitrate solution and silane coupling agent to optimize the interface and activity of silicon micropowder, and at the same time, nano magnesium oxide is treated with sodium silicate solution and then combined with sodium alginate solution and other raw materials to make modified nano magnesium oxide agent, and silicon micropowder agent is used to coordinate with modified nano magnesium oxide agent to achieve better synergistic effect with modified nano zinc oxide, and the product performance is further improved. DETAILED DESCRIPTION

[0016] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] A fabric softener according to the present embodiment comprises the following raw materials in parts by weight: 30-35 parts of stearic acid, 15-25 parts of fatty alcohol polyoxyethylene ether, 5-8 parts of modified nano zinc oxide, 4-7 parts of auxiliary adjustment agent based on silicon micropowder, 5-8 parts of citric acid, 4-7 parts of amino silicone oil, 3-6 parts of peregrin, and 25-30 parts of water.

[0018] The defoamer of this embodiment is the following raw materials in parts by weight: 32.5 parts of stearic acid, 20 parts of fatty alcohol polyoxyethylene ether, 6.5 parts of modified nano zinc oxide, 5.5 parts of auxiliary adjustment agent based on silicon micropowder, 6.5 parts of citric acid, 5.5 parts of amino silicone oil, 4.5 parts of peregrin, and 27.5 parts of water.

[0019] The modification method of the modified nano zinc oxide in this embodiment is: S1: preheat the nano zinc oxide at 55-60°C for 10-20 minutes, and then mix it in a sufficient amount of 5% sodium lignin sulfonate solution to obtain a nano zinc oxide solution; S2: Preparation of modified solution: S21: mixing kaolin with a sufficient amount of dopamine hydrochloride solution to obtain a kaolin agent; S22: adding 2-5 parts of lanthanum oxide and 1-3 parts of nano-silica sol to 4-7 parts of sodium dodecylbenzene sulfonate solution, and then adding 3-5 parts of kaolin agent, and mixing well to obtain a modified solution; S3: stirring the nano zinc oxide liquid and the modified liquid for modification treatment, and after the stirring is completed, washing, filtering and drying are performed to obtain modified nano zinc oxide.

[0020] The mass fraction of the dopamine hydrochloride solution in this embodiment is 2-5%; the mass fraction of the sodium dodecylbenzene sulfonate solution is 4-6%.

[0021] The stirring speed of the stirring modification treatment in this embodiment is 550-750 r / min, and the stirring is 20-30 min.

[0022] The mass ratio of the nano zinc oxide liquid and the modified liquid in this embodiment is (3-5): 2 The preparation method of the auxiliary agent based on silicon powder in this embodiment is: S11: 4-7 parts of silicon micropowder, 1-3 parts of yttrium nitrate solution and 2-5 parts of silane coupling agent KH550 are uniformly mixed to obtain silicon micropowder agent; S12: mixing nano-magnesium oxide and sodium silicate solution having a mass fraction of 2-5% in a weight ratio of 5:3 and subjecting the mixture to ball milling, and then completing the ball milling to obtain nano-magnesium oxide liquid; 5-8 parts of nano magnesium oxide liquid, 2-4 parts of carboxymethyl cellulose, and 1-3 parts of sodium alginate solution are fully mixed to obtain a modified nano magnesium oxide agent; S13: subjecting silicon micropowder and modified nano magnesium oxide to ultrasonic modification in a weight ratio of 5:3, finishing the ultrasonic modification, filtering and drying to obtain an auxiliary agent based on silicon micropowder.

[0023] The mass fraction of the yttrium nitrate solution in this embodiment is 2-4%; the mass fraction of the sodium alginate solution is 4-6%.

[0024] In S12 of this embodiment, the rotation speed of the mixing ball milling treatment is 750-850r / min, and the ball milling is 20-30min; the ultrasonic power of the ultrasonic modification treatment in S13 is 350-400W, and the ultrasonic time is 25-35min.

[0025] This embodiment also provides a method for preparing a fabric softener, comprising the following steps: adding raw materials into a mixer in sequence and stirring at a stirring speed of 700-800 r / min for 35-45 min, and completing the stirring to obtain the fabric softener of the present invention.

[0026] Example 1. A fabric softener according to the present embodiment comprises the following raw materials in parts by weight: 30 parts of stearic acid, 15 parts of fatty alcohol polyoxyethylene ether, 5 parts of modified nano zinc oxide, 4 parts of auxiliary adjustment agent based on silicon micropowder, 5 parts of citric acid, 4 parts of amino silicone oil, 3 parts of peregrin, and 25 parts of water.

[0027] The modification method of the modified nano zinc oxide in this embodiment is: S1: preheat the nano zinc oxide at 55°C for 10 min, and then mix it thoroughly in a sufficient amount of 5% sodium lignin sulfonate solution to obtain a nano zinc oxide solution; S2: Preparation of modified solution: S21: mixing kaolin with a sufficient amount of dopamine hydrochloride solution to obtain a kaolin agent; S22: adding 2 parts of lanthanum oxide and 1 part of nano-silica sol to 4 parts of sodium dodecylbenzene sulfonate solution, and then adding 3 parts of kaolin agent, and mixing them thoroughly to obtain a modified solution; S3: stirring the nano zinc oxide liquid and the modified liquid for modification treatment, and after the stirring is completed, washing, filtering and drying are performed to obtain modified nano zinc oxide.

[0028] The mass fraction of the dopamine hydrochloride solution in this embodiment is 2%; the mass fraction of the sodium dodecylbenzenesulfonate solution is 4%.

[0029] The stirring speed of the stirring modification treatment in this embodiment is 550 r / min, and the stirring is performed for 20 min.

[0030] The mass ratio of the nano zinc oxide liquid and the modified liquid in this embodiment is 3:2 The preparation method of the auxiliary agent based on silicon powder in this embodiment is: S11: 4 parts of silicon micropowder, 1 part of yttrium nitrate solution and 2 parts of silane coupling agent KH550 are uniformly mixed to obtain silicon micropowder agent; S12: mixing nano-magnesium oxide and 2% sodium silicate solution by weight in a weight ratio of 5:3 and subjecting them to ball milling, and after the ball milling is completed, nano-magnesium oxide liquid is obtained; 5 parts of nano magnesium oxide solution, 2 parts of carboxymethyl cellulose and 1 part of sodium alginate solution are fully mixed to obtain a modified nano magnesium oxide agent; S13: subjecting silicon micropowder and modified nano magnesium oxide to ultrasonic modification in a weight ratio of 5:3, finishing the ultrasonic modification, filtering and drying to obtain an auxiliary agent based on silicon micropowder.

[0031] The mass fraction of the yttrium nitrate solution in this embodiment is 2%; the mass fraction of the sodium alginate solution is 4%.

[0032] In S12 of this embodiment, the rotation speed of the mixing ball milling treatment is 750 r / min, and the ball milling is 20 min; the ultrasonic power of the ultrasonic modification treatment in S13 is 350 W, and the ultrasonic time is 25 min.

[0033] This embodiment also provides a method for preparing a fabric softener, comprising the following steps: adding raw materials into a stirrer in sequence and stirring at a stirring speed of 700 r / min for 35 min, and completing the stirring to obtain the fabric softener of the present invention.

[0034] Example 2. A fabric softener according to the present embodiment comprises the following raw materials in parts by weight: 35 parts of stearic acid, 25 parts of fatty alcohol polyoxyethylene ether, 8 parts of modified nano zinc oxide, 7 parts of auxiliary adjustment agent based on silicon micropowder, 8 parts of citric acid, 7 parts of amino silicone oil, 6 parts of peregrin, and 30 parts of water.

[0035] The modification method of the modified nano zinc oxide in this embodiment is: S1: preheat the nano zinc oxide at 60°C for 20 min, and then mix it thoroughly in a sufficient amount of 5% sodium lignin sulfonate solution to obtain a nano zinc oxide solution; S2: Preparation of modified solution: S21: mixing kaolin with a sufficient amount of dopamine hydrochloride solution to obtain a kaolin agent; S22: adding 5 parts of lanthanum oxide and 3 parts of nano-silica sol to 7 parts of sodium dodecylbenzene sulfonate solution, and then adding 5 parts of kaolin agent, and mixing them thoroughly to obtain a modified solution; S3: stirring the nano zinc oxide liquid and the modified liquid for modification treatment, and after the stirring is completed, washing, filtering and drying are performed to obtain modified nano zinc oxide.

[0036] The mass fraction of the dopamine hydrochloride solution in this embodiment is 5%; the mass fraction of the sodium dodecylbenzenesulfonate solution is 6%.

[0037] The stirring speed of the stirring modification treatment in this embodiment is 750 r / min, and the stirring is 30 min.

[0038] The mass ratio of the nano zinc oxide liquid to the modified liquid in this embodiment is 5:2.

[0039] The preparation method of the auxiliary agent based on silicon powder in this embodiment is: S11: 7 parts of silicon micropowder, 3 parts of yttrium nitrate solution and 5 parts of silane coupling agent KH550 are uniformly mixed to obtain silicon micropowder agent; S12: mixing nano-magnesium oxide and 5% sodium silicate solution by weight in a weight ratio of 5:3 and subjecting them to ball milling, and after the ball milling is completed, nano-magnesium oxide liquid is obtained; 8 parts of nano magnesium oxide solution, 4 parts of carboxymethyl cellulose and 3 parts of sodium alginate solution are fully mixed to obtain a modified nano magnesium oxide agent; S13: subjecting silicon micropowder and modified nano magnesium oxide to ultrasonic modification in a weight ratio of 5:3, finishing the ultrasonic modification, filtering and drying to obtain an auxiliary agent based on silicon micropowder.

[0040] The mass fraction of the yttrium nitrate solution in this embodiment is 4%; the mass fraction of the sodium alginate solution is 6%.

[0041] In S12 of this embodiment, the rotation speed of the mixing ball milling treatment is 850 r / min, and the ball milling is 30 minutes; the ultrasonic power of the ultrasonic modification treatment in S13 is 400 W, and the ultrasonic time is 35 minutes.

[0042] This embodiment also provides a method for preparing a fabric softener, comprising the following steps: adding raw materials into a stirrer in sequence and stirring at a stirring speed of 800 r / min for 45 min, and completing the stirring to obtain the fabric softener of the present invention.

[0043] Example 3. A fabric softener according to the present embodiment comprises the following raw materials in parts by weight: 32.5 parts of stearic acid, 20 parts of fatty alcohol polyoxyethylene ether, 6.5 parts of modified nano zinc oxide, 5.5 parts of auxiliary adjustment agent based on silicon micropowder, 6.5 parts of citric acid, 5.5 parts of amino silicone oil, 4.5 parts of peregrin, and 27.5 parts of water.

[0044] The modification method of the modified nano zinc oxide in this embodiment is: S1: preheat the nano zinc oxide at 57°C for 15 min, and then mix it thoroughly in a sufficient amount of 5% sodium lignin sulfonate solution to obtain a nano zinc oxide solution; S2: Preparation of modified solution: S21: mixing kaolin with a sufficient amount of dopamine hydrochloride solution to obtain a kaolin agent; S22: adding 3.5 parts of lanthanum oxide and 2 parts of nano-silica sol to 5.5 parts of sodium dodecylbenzene sulfonate solution, and then adding 4 parts of kaolin agent, and mixing them thoroughly to obtain a modified solution; S3: stirring the nano zinc oxide liquid and the modified liquid for modification treatment, and after the stirring is completed, washing, filtering and drying are performed to obtain modified nano zinc oxide.

[0045] The mass fraction of the dopamine hydrochloride solution in this embodiment is 3.5%; the mass fraction of the sodium dodecylbenzene sulfonate solution is 5%.

[0046] The stirring speed of the stirring modification treatment in this embodiment is 600 r / min, and the stirring is performed for 25 min.

[0047] The mass ratio of the nano zinc oxide liquid to the modified liquid in this embodiment is 2:1.

[0048] The preparation method of the auxiliary agent based on silicon powder in this embodiment is: S11: 5.5 parts of silicon micropowder, 2 parts of yttrium nitrate solution and 3.5 parts of silane coupling agent KH550 are uniformly mixed to obtain silicon micropowder agent; S12: mixing nano-magnesium oxide and sodium silicate solution having a mass fraction of 3.5% in a weight ratio of 5:3 and subjecting them to ball milling, and after the ball milling is completed, nano-magnesium oxide liquid is obtained; 6.5 parts of nano magnesium oxide solution, 3 parts of carboxymethyl cellulose and 2 parts of sodium alginate solution are fully mixed to obtain a modified nano magnesium oxide agent; S13: subjecting silicon micropowder and modified nano magnesium oxide to ultrasonic modification in a weight ratio of 5:3, finishing the ultrasonic modification, filtering and drying to obtain an auxiliary agent based on silicon micropowder.

[0049] The mass fraction of the yttrium nitrate solution in this embodiment is 3%; the mass fraction of the sodium alginate solution is 5%.

[0050] In S12 of this embodiment, the rotation speed of the mixing ball milling treatment is 800 r / min, and the ball milling is 25 min; the ultrasonic power of the ultrasonic modification treatment in S13 is 370 W, and the ultrasonic time is 30 min.

[0051] This embodiment also provides a method for preparing a fabric softener, comprising the following steps: adding raw materials into a stirrer in sequence and stirring at a stirring speed of 750 r / min for 40 min, and completing the stirring to obtain the fabric softener of the present invention.

[0052] Comparative Example 1. The difference from Example 3 is that no modified nano zinc oxide is added.

[0053] Comparative Example 2. The difference from Example 3 is that the modified nano zinc oxide is not treated with a modification liquid.

[0054] Comparative Example 3. The difference from Example 3 is that no kaolin agent is added to the modified liquid.

[0055] Comparative Example 4. The difference from Example 3 is that no lanthanum oxide or nano-silica sol is added to the modified solution.

[0056] Comparative Example 5. The difference from Example 3 is that no auxiliary agent based on silicon powder is added.

[0057] Comparative Example 6. The difference from Example 3 is that no silicon powder is added in the preparation of the auxiliary adjustment agent based on silicon powder.

[0058] Comparative Example 7. The difference from Example 3 is that the modified nano magnesium oxide agent is not added in the preparation of the auxiliary agent based on silicon powder.

[0059] Comparative Example 8. The difference from Example 3 is that no nano magnesium oxide liquid is added to the modified nano magnesium oxide agent.

[0060] The product performance tests of Examples 1-3 and Comparative Examples 1-8 are as follows:

[0061] It can be seen from Comparative Examples 1-8 and Examples 1-3 that the product of Example 3 of the present invention has excellent softness performance, and the product has significant performance stability under the conditions of acid decay and fabric washing 10 times; The present invention does not add modified nano zinc oxide or one of the auxiliary adjusting agents based on silicon micropowder, and the performance of the product deteriorates significantly. The two are used in coordination and synergistically, and the product performance effect is most significant; the modified nano zinc oxide is not treated with a modifying liquid, kaolin agent is not added to the modifying liquid, lanthanum oxide and nano silica sol are not added to the modifying liquid, silicon micropowder agent is not added in the preparation of the auxiliary adjusting agent based on silicon micropowder, modified nano magnesium oxide agent is not added in the preparation of the auxiliary adjusting agent based on silicon micropowder, and nano magnesium oxide liquid is not added to the modified nano magnesium oxide agent. The performance of the product has a tendency to deteriorate. Only the modified nano zinc oxide obtained by using the specific modifying liquid of the present invention and the product raw materials obtained by using the specific modified nano magnesium oxide agent and silicon micropowder agent have the most significant product performance effect. Using other methods instead is not as significant as the effect of the present invention.

[0062] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0063] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fabric softener, characterized in that: It includes the following raw materials in parts by weight: 30-35 parts of stearic acid, 15-25 parts of fatty alcohol polyoxyethylene ether, 5-8 parts of modified nano zinc oxide, 4-7 parts of auxiliary adjustment agent based on silicon micropowder, 5-8 parts of citric acid, 4-7 parts of amino silicone oil, 3-6 parts of peregrin, and 25-30 parts of water.

2. A fabric softener according to claim 1, characterized in that: The defoamer is the following raw materials in parts by weight: 32.5 parts of stearic acid, 20 parts of fatty alcohol polyoxyethylene ether, 6.5 parts of modified nano zinc oxide, 5.5 parts of auxiliary adjustment agent based on silicon micropowder, 6.5 parts of citric acid, 5.5 parts of amino silicone oil, 4.5 parts of peregrin, and 27.5 parts of water.

3. A fabric softener according to claim 1, characterized in that: The modification method of the modified nano zinc oxide is: S1: preheat the nano zinc oxide at 55-60°C for 10-20 minutes, and then mix it in a sufficient amount of 5% sodium lignin sulfonate solution to obtain a nano zinc oxide solution; S2: Preparation of modified solution: S21: mixing kaolin with a sufficient amount of dopamine hydrochloride solution to obtain a kaolin agent; S22: adding 2-5 parts of lanthanum oxide and 1-3 parts of nano-silica sol to 4-7 parts of sodium dodecylbenzene sulfonate solution, and then adding 3-5 parts of kaolin agent, and mixing well to obtain a modified solution; S3: stirring the nano zinc oxide liquid and the modified liquid for modification treatment, and after the stirring is completed, washing, filtering and drying are performed to obtain modified nano zinc oxide.

4. The water-based nano environmentally friendly defoamer according to claim 3, characterized in that: The mass fraction of the dopamine hydrochloride solution is 2-5%; the mass fraction of the sodium dodecylbenzene sulfonate solution is 4-6%.

5. A fabric softener according to claim 3, characterized in that: The stirring speed of the stirring modification treatment is 550-750r / min, and the stirring is 20-30min.

6. A fabric softener according to claim 3, characterized in that: The mass ratio of the nano zinc oxide liquid and the modified liquid is (3-5):

2.

7. A fabric softener according to claim 1, characterized in that: The preparation method of the auxiliary agent based on silicon micropowder is: S11: 4-7 parts of silicon micropowder, 1-3 parts of yttrium nitrate solution and 2-5 parts of silane coupling agent KH550 are uniformly mixed to obtain silicon micropowder agent; S12: mixing nano-magnesium oxide and sodium silicate solution having a mass fraction of 2-5% in a weight ratio of 5:3 and subjecting the mixture to ball milling, and then completing the ball milling to obtain nano-magnesium oxide liquid; 5-8 parts of nano magnesium oxide liquid, 2-4 parts of carboxymethyl cellulose, and 1-3 parts of sodium alginate solution are fully mixed to obtain a modified nano magnesium oxide agent; S13: subjecting silicon micropowder and modified nano magnesium oxide to ultrasonic modification in a weight ratio of 5:3, finishing the ultrasonic modification, filtering and drying to obtain an auxiliary agent based on silicon micropowder.

8. A fabric softener according to claim 7, characterized in that: The mass fraction of the yttrium nitrate solution is 2-4%; the mass fraction of the sodium alginate solution is 4-6%.

9. A fabric softener according to claim 7, characterized in that: The rotation speed of the mixing ball milling treatment in S12 is 750-850r / min, and the ball milling is 20-30min; the ultrasonic power of the ultrasonic modification treatment in S13 is 350-400W, and the ultrasonic time is 25-35min.

10. The method for preparing a fabric softener according to any one of claims 1 to 9, characterized in that: The following steps are involved: The raw materials are sequentially added into a stirrer for stirring at a stirring speed of 700-800 r / min for a stirring time of 35-45 min. After the stirring is completed, the fabric softener of the present invention is obtained.

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