A multifunctional finishing agent for chenille and preparation method thereof

Abstract

The invention relates to a special multifunctional finishing agent for chenille and a preparation method thereof, which are as follows: (1) preparing silicone oil: uniformly mixing a linear body and an aminosilane coupling agent, heating the mixture to 70-80°C, adding a catalyst, continuing to heat the mixture to 120-130°C for heat preservation and reaction for 4-5 hours, continuing to heat the mixture to 135-140°C for heat preservation for 1-1.5 hours, and then cooling the mixture to 103-108°C for vacuuming for 10-15 minutes to obtain A; (2) preparing silicone oil emulsion: uniformly mixing deionized water and an emulsifier, adding A in batches for multiple times for emulsification and shearing, adding glacial acetic acid and deionized water after all the additions are completed, and stirring uniformly to obtain B; (3) uniformly mixing B with decapolyglycerol, modified silicate emulsion, and polyethylene glycol to obtain a final product C. The chenille finished by the special multifunctional finishing agent for chenille is not only soft, bright, and skin-friendly, but also has significantly improved water washing resistance and wear resistance.

Description

Technical Field

[0001] The invention belongs to the technical field of textile auxiliaries, and particularly relates to a special multifunctional finishing agent for chenille and a preparation method thereof. Background Art

[0002] Chenille is a fabric made of short fibers or filaments of different fineness and strength twisted together. It is a new type of fabric with unique features that has been widely popular and applied in recent years. It has a full velvet surface, excellent hand feel, and light texture; it also has skin-friendly feeling, good water absorption and drape, good light-shielding and dust-proof, windproof and heat-insulating functions; at the same time, it does not generate static electricity and pilling due to friction like ordinary thick yarns. It has good stretchability and greatly reduces pilling. However, chenille fabric also has obvious disadvantages: it is easy to deform and shrink after washing, and its wear resistance is not ideal.

[0003] CN114737387A discloses a sand washing finishing process for chenille fabrics, comprising the following steps: S1. Fabric feeding: putting the dyed chenille fabric into an acid-resistant and oxidation-resistant polyester mesh bag, and then putting it into a special sand washing machine, with the bath ratio controlled at 1:20-60, adding a pH buffer system at room temperature, and controlling the pH value at 4.0-5.8; S2. Preparation of oxidation aid; S3. Sand washing; S4. Preparation of softener; S5. Softening wash; S6. Antibacterial wash: taking out the chenille fabric treated in S5, and putting it into an antibacterial finishing agent for padding treatment for 20-40 minutes; S7. Washing with clean water. The present invention reduces the effect of the oxidation aid on the chenille fabric itself by putting the fabric into an acid-resistant and oxidation-resistant polyester mesh bag and adding a pH buffer system, so that the oxidation aid mainly acts on the surface of the chenille fabric and the dye on it, reducing the damage to the chenille fabric and the destruction of the internal dye, and effectively avoiding the strong damage to the chenille fabric caused by the traditional sand washing process. The softener comprises the following raw materials in parts by weight: 100-140 parts of octamethyltetrasiloxane, 40-60 parts of polyethoxylated fatty alcohol, 3-6 parts of ascorbic acid, 250-350 parts of dimethyldisiloxane, 1-3 parts of ethylene glycol monostearate, 1-3 parts of hydroxypropylmethylcellulose, 1-3 parts of sodium carbonate, 1-3 parts of aminosilane coupling agent, 15-30 parts of citric acid, and 800-1000 parts of deionized water. However, this process still does not solve the problem of poor water resistance and poor wear resistance. Summary of the invention

[0004] The invention aims to provide a special multifunctional finishing agent for chenille, which can make the chenille soft, bright and skin-friendly and significantly improve the washing resistance and abrasion resistance.

[0005] The technical solution adopted by the present invention to solve the above problems is: a multifunctional finishing agent special for chenille, wherein the raw materials for preparing the multifunctional finishing agent special for chenille include: linear body, polyethylene glycol, polyglycerol (polyglycerol-10), aminosilane coupling agent, modified silicate emulsion, and emulsifier; wherein the modified silicate emulsion is Rudolf anti-pilling agent SSG300.

[0006] Preferably, the polyethylene glycol is PEG200.

[0007] Preferably, the aminosilane coupling agent is N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane.

[0008] Preferably, the emulsifier is emulsifier XL40 and emulsifier TO-7.

[0009] Another object of the present invention is to provide a method for preparing a multifunctional finishing agent for chenille, comprising the following steps:

[0010] (1) Preparation of silicone oil: put the linear body and aminosilane coupling agent into a reaction kettle, add the catalyst lithium hydroxide when the temperature reaches 70-80°C, continue to heat to 120-130°C and keep the temperature for reaction for 4-5 hours, then continue to heat to 135-140°C and keep the temperature for stirring for 1-1.5 hours, then cool to 103-108°C and evacuate for 10-15 minutes, cool and discharge to obtain A;

[0011] (2) Preparation of silicone oil emulsion: deionized water and emulsifier are stirred and mixed in a certain proportion, and then A is added in batches for emulsification and shearing. After all the additions are completed, glacial acetic acid and deionized water are added and stirred to obtain B;

[0012] (3) B is mixed with polyglycerol, modified silicate emulsion and polyethylene glycol to obtain the final product C.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] The multifunctional finishing agent for chenille of the present invention has excellent stability. The chenille finished by the agent is not only soft, bright and skin-friendly, but also has significantly improved water-washing resistance and abrasion resistance. Implementation

[0015] The present invention is further described in detail below with reference to the embodiments. Example 1

[0016] (1) Preparation of silicone oil: 1000 kg of linear body and 42 kg of aminosilane coupling agent N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane were placed in a reaction kettle. When the temperature reached 70°C, 0.2 kg of catalyst lithium hydroxide was added. The temperature was continued to rise to 120°C and kept warm for 4 hours. The temperature was then continued to rise to 135°C and kept warm for 1 hour with stirring. When the temperature was lowered to 105°C, vacuum was applied for 10 minutes, and the material was cooled and discharged to obtain A.

[0017] (2) Preparation of silicone oil emulsion: 50 kg of deionized water, 30 kg of emulsifier XL40 and 20 kg of emulsifier TO-7 were thoroughly stirred and mixed. 500 kg of the above-obtained A was added in ten times (50 kg each time) and emulsified and sheared. The next batch was added after each shearing and emulsification for 3 minutes. After all the additions were completed, 7.5 kg of glacial acetic acid was slowly added with 1900 kg of deionized water and stirred to obtain B.

[0018] (3) The above-obtained 100 kg product B was mixed with 5 kg polyglycerol, 20 kg modified silica emulsion (Rudolf anti-pilling agent SSG300) and 5 kg PEG200 and stirred to obtain the final product C. Example 2

[0019] (1) Preparation of silicone oil: 1000 kg of linear body and 42 kg of aminosilane coupling agent N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane were placed in a reaction kettle. When the temperature reached 75°C, 0.2 kg of catalyst lithium hydroxide was added. The temperature was continued to rise to 125°C and kept warm for 4.5 hours. The temperature was then continued to rise to 140°C and kept warm for 1 hour with stirring. When the temperature was lowered to 108°C, vacuum was applied for 12 minutes, and the material was cooled and discharged to obtain A.

[0020] (2) Preparation of silicone oil emulsion: 50 kg of deionized water, 30 kg of emulsifier XL40 and 20 kg of emulsifier TO-7 were thoroughly stirred and mixed. 500 kg of the above-obtained A was added in ten times (50 kg each time) and emulsified and sheared. The next batch was added after each shearing and emulsification for 3 minutes. After all the additions were completed, 7.5 kg of glacial acetic acid was slowly added with 1900 kg of deionized water and stirred to obtain B.

[0021] (3) The above-obtained 100 kg product B was mixed with 5 kg polyglycerol, 20 kg modified silica emulsion (Rudolf anti-pilling agent SSG300) and 5 kg PEG200 and stirred to obtain the final product C. Example 3

[0022] (1) Preparation of silicone oil: 1000 kg of linear body and 42 kg of aminosilane coupling agent N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane were placed in a reaction kettle. When the temperature reached 80°C, 0.2 kg of catalyst lithium hydroxide was added. The temperature was continued to rise to 130°C and kept warm for 4 hours. The temperature was then continued to rise to 135°C and kept warm for 1.5 hours. When the temperature was lowered to 103°C, vacuum was applied for 15 minutes, and the material was cooled and discharged to obtain A.

[0023] (2) Preparation of silicone oil emulsion: 50 kg of deionized water, 30 kg of emulsifier XL40 and 20 kg of emulsifier TO-7 were thoroughly stirred and mixed. 500 kg of the above-obtained A was added in ten times (50 kg each time) and emulsified and sheared. The next batch was added after each shearing and emulsification for 3 minutes. After all the additions were completed, 7.5 kg of glacial acetic acid was slowly added with 1900 kg of deionized water and stirred to obtain B.

[0024] (3) The above-obtained 100 kg product B was mixed with 5 kg polyglycerol, 20 kg modified silica emulsion (Rudolf anti-pilling agent SSG300) and 5 kg PEG200 and stirred to obtain the final product C.

[0025] Comparative Example 1

[0026] The only difference from Example 1 is that PEG200 is not added.

[0027] Comparative Example 2

[0028] The only difference from Example 1 is that no modified silicic acid emulsion is added.

[0029] Comparative Example 3

[0030] The only difference from Example 1 is that PEG200 and modified silicic acid emulsion are not added.

[0031] The multifunctional finishing agents prepared in Examples 1-3 and Comparative Examples 1-3 were prepared into 30 g / L aqueous solutions, and the chenille was double dipped and double rolled at this concentration at room temperature, shaped and dried at 150°C, and then washed and dried at room temperature, and the finished products were tested for comprehensive hand feel, shrinkage after washing, and anti-pilling. The specific testing methods are as follows:

[0032] Comprehensive feel: The performance of chenille after finishing with a finishing agent is evaluated by feel. The hand touch method is used to feel the softness, smoothness, fluffiness, elasticity, and drape of the chenille. It is jointly judged by 5 senior industry professionals and is divided into five levels: 1, 2, 3, 4, and 5. The larger the value, the better the corresponding feel.

[0033] Shrinkage after washing: refers to the percentage of fabric shrinkage after washing or soaking in water.

[0034] Anti-pilling grade: measured by a rolling box anti-pilling instrument. The test results are compared with the sample: the pilling fabric is compared with the standard sample to determine the pilling degree of the sample. The pilling degree is divided into five levels. The smaller the level, the more serious the pilling of the fabric, and the larger the level, the better the anti-pilling performance.

[0035] Table 1 Comparison of chenille feel finishes

[0036]

[0037] Table 2 Comparison of shrinkage and pilling resistance of treated and untreated chenille after washing

[0038]

[0039] The multifunctional finishing agents prepared in Examples 1-3 and Comparative Examples 1-3 were placed in an acid, alkali, salt, high temperature or other environment for a period of time to observe whether there were any changes.

[0040] Table 3 Comparison of finishing agent stability

[0041]

[0042] As can be seen from Tables 1-3, adding polyethylene glycol can reduce static electricity between fabrics and greatly improve the slipperiness of chenille; adding modified silicate emulsion can improve the anti-pilling performance of chenille, and the addition of polyethylene glycol and modified silicate emulsion can greatly improve the stability of the finishing agent.

[0043] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A multifunctional finishing agent for chenille, characterized in that: The raw materials for preparing the multifunctional finishing agent for chenille include: linear body, polyethylene glycol, polyglycerol, aminosilane coupling agent, modified silica emulsion, and emulsifier; wherein the modified silica emulsion is Rudolf anti-pilling agent SSG300; The multifunctional finishing agent for chenille is prepared by the following preparation method: 1) Preparation of silicone oil: put the linear body and aminosilane coupling agent into a reaction kettle, add the catalyst lithium hydroxide when the temperature rises to 70-80°C, continue to heat to 120-130°C and keep the temperature for reaction for 4-5 hours, then continue to heat to 135-140°C and keep the temperature for stirring for 1-1.5 hours, then cool to 103-108°C and evacuate for 10-15 minutes, cool and discharge to obtain A; (2) Preparation of silicone oil emulsion: deionized water and emulsifier are stirred and mixed in a certain proportion, and then A is added in batches for emulsification and shearing. After all the additions are completed, glacial acetic acid and deionized water are added and stirred to obtain B; (3) B is mixed with polyglycerol, modified silicate emulsion and polyethylene glycol to obtain the final product C.

2. The multifunctional finishing agent for chenille according to claim 1, characterized in that: The polyethylene glycol is PEG200.

3. The multifunctional finishing agent for chenille according to claim 1, characterized in that: The aminosilane coupling agent is N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane.

4. The multifunctional finishing agent for chenille according to claim 1, characterized in that: The emulsifiers are emulsifier XL40 and emulsifier TO-7.

5. A method for preparing the multifunctional finishing agent for chenille according to any one of claims 1 to 4, characterized in that: The following steps are involved: (1) Preparation of silicone oil: put the linear body and aminosilane coupling agent into a reaction kettle, add the catalyst lithium hydroxide when the temperature reaches 70-80°C, continue to heat to 120-130°C and keep the temperature for reaction for 4-5 hours, then continue to heat to 135-140°C and keep the temperature for stirring for 1-1.5 hours, then cool to 103-108°C and evacuate for 10-15 minutes, cool and discharge to obtain A; (2) Preparation of silicone oil emulsion: deionized water and emulsifier are stirred and mixed in a certain proportion, and then A is added in batches for emulsification and shearing. After all the additions are completed, glacial acetic acid and deionized water are added and stirred to obtain B; (3) B is mixed with polyglycerol, modified silicate emulsion and polyethylene glycol to obtain the final product C.

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