The use of silica sol for textile printing and dyeing auxiliaries varies according to the purpose of its application, but in general it can be summarized into the following basic steps and precautions:
I. Basic use method
1. Use of thickener
Purpose: Adjust the viscosity of the printing and dyeing slurry to make the printed pattern clearer and fuller.
Method: Add an appropriate amount of silica sol to the printing and dyeing slurry, stir evenly, and adjust the viscosity of the slurry as needed.
2. Use of adhesive
Purpose: Enhance the adhesion of the textile surface to make the printed pattern more firm and not easy to fall off.
Method: During the printing process, silica sol is mixed with dyes or pigments to form a printing slurry, and then the slurry is printed on the textile. After drying and color fixing treatment, the printed pattern is firmly attached to the textile.
3. Use of waterproofing agent
Purpose: Give textiles good waterproof properties to keep textiles dry on wet or rainy days.
Method: Apply silica sol evenly on the surface of the textile, and after drying treatment, the silica sol forms a waterproof film on the surface of the textile, thereby achieving a waterproof effect.
2. Precautions
1. Control dosage: Excessive use of silica sol may cause the performance of textiles to deteriorate or have adverse effects. Therefore, the appropriate silica sol model and dosage should be selected according to the material and processing requirements of the textiles.
2. Stir evenly: When using silica sol, pay attention to stirring evenly to avoid precipitation or stratification, and ensure that the silica sol is fully mixed with the printing and dyeing slurry.
3. Control parameters: During the printing process, pay attention to controlling the viscosity, printing pressure and drying temperature of the printing slurry to obtain the best printing effect.
4. Safety protection: When using silica sol, pay attention to safety protection and avoid contact with skin and eyes. If accidentally splashed into the eyes or skin, rinse with clean water immediately and seek medical attention.
5. Storage conditions: Silica sol should be stored in a cool, ventilated and dry place, avoid direct sunlight and high temperature to avoid deterioration or failure.
3. Specific application scenarios
1. Wool and rabbit hair treatment: Silica sol and wool oil are used to treat wool and rabbit hair, which can increase the cohesion between fibers, improve the spinnability of wool and rabbit hair, reduce broken ends, prevent flying flowers, and improve production efficiency.
2. Anti-slip treatment of yarn: Adding silica sol to textile auxiliaries can make the yarn anti-slip, make the fabric crisp and dry, and control the gloss of the fabric.
3. Warp sizing treatment: Adding silica sol to the warp sizing liquid can increase the adhesion of the sizing material, make it easy to form a sizing film, save sizing material, and shorten the drying time.
4. Anti-slip and dust-proof treatment of fabrics: Adding silica sol to starch glue to treat fabrics, such as carpets, can prevent slipping and dust, prevent static electricity, and not stick to dust.
In summary, the use of silica sol for textile printing and dyeing auxiliaries includes the use of thickeners, adhesives and waterproofing agents, and it is necessary to pay attention to controlling the amount, stirring evenly, controlling parameters, safety protection and storage conditions. In specific application scenarios, silica sol can be flexibly used according to different processing requirements.