1. Immersion method: A film solution with a concentration of 10% is used, that is, the ratio of the film to the water is 1:9. (1) Ordinary film: (a) Open at room temperature: Soak in tap water at room temperature (25°C), add quantitative water to the beaker first, and then slowly and evenly spill the film, shake the beaker gently to evenly disperse the film in water. Record 1 hour, 7 hours, 24 hours of dissolution; (b) Hot water cut: soaked in tap water at 45°C and 60°C, and heated and kept in a water bath. Visually record the dissolution for 1 hour, 4 hours, and 6 hours. (2) Instant-type film: Dissolve 10g instant film into 90m L of tap water, shake the beaker gently, and spread the film evenly in water. Soak for 60 minutes at room temperature and observe dissolution. 2. Stirring method: The open material concentration is 10%, that is, the ratio of the film to the water is 1:9. First add quantitative cold water to the beaker, slowly and evenly spray the film at a stirring speed of about 300 rpm, then slowly warm up to 60°C, 80°C (non-ionic film 75°C), continue stirring for 60min with an electric mixer (non- Ionic film 30min), record dissolution. Note: When the hot water soaking and stirring method is used to open the material, due to the higher temperature and longer time, the water will evaporate more. After observing the solubility, if the film solution is used as working fluid, it should be supplemented with water. Make it into a film solution with a concentration of 10%. The specific method can be pre-weighed before the material is opened, and after completion of the operation, the reduced equal weight of moisture is added. 3. Description of dissolution: In general, textual description, when the number of films and test items are more comprehensive, and text description is more verbose, consider using codes to indicate, but first indicate. The letters and codes correspond to the following: Code Dissolution 1 Basically non-swellable 2 Smallest partially swelled 3 Mostly swelled, slightly soluble 4 Mostly dissolved 5 Mostly dissolved 6 Completely dissolved Note: If the film dissolves into a viscous, uneven, underlined Mark N. 4. Easy Determination of Solubility: Take about 1 g of the open film solution and mix it with 100 mL of water to observe the presence of film particles. If yes, the film is not completely dissolved and it is necessary to continue stirring until completely dissolved. (b) Diffusion: 1. Experimental method: Take about 5 mL of 10% film and place it in a 250 mL beaker filled with water. Observe the natural diffusion in water. If it does not spread naturally, stir it with a glass rod for 2 to 3 seconds. It spreads in water. Description of results: Use good, medium, and poor descriptions, and if necessary, use textual descriptions. Naturally spread or slightly stir and dissolve well, stir and stir in, stirring insoluble, poor diffusion. (iii) Stability: 1. Working fluid stability: take 10% of the film to prepare 5g/L (or as needed) emulsion in tap water and observe its stability at room temperature for 2 hours, 4 hours, 8 hours, and 24 hours. 2. Alkaline stability: take 10% of the film with tap water to make 5g/L (or as needed) emulsion, adjust the pH to 9~10 with 40% caustic soda, and observe it for 2 hours, 4 hours, 8 hours, 24 hours. Hours of room temperature stability. (d) Compatibility: The test method is shown in the table below, and observe its room temperature stability. Initially with 2 hours 4 hours 8 hours 24 hours 10% film 40g/L + adhesive DME-751 10g/L 10% film 40g/L+fixing agent DMC-512 15g/L 10% film 40g/L+ paint blue 8304 0.1g/L 10% film 40g/L + adhesive DME-751 10g/L + fixing agent DMC-512 15g/L + coating 8304 0.1g/L 10% film 40g/L+VBL 0.2g/L 10% film 40g/L +WS-135 8g/L Note: The above concentration is the actual concentration of each component in the configured working fluid. (v) Application performance: 1. Prescription and process conditions: (1) Immersion method (knitted fabric or yarn): 10% film (owf) X% working solution pH adjusted as needed) Bath ratio 1:10~15 Room temperature 0~40°C Immersion 0~30min→Dehydration/rolling dry→Drying (100°C)→Baking (C,R,L 150°C×30~60',T,T/C,T/R 170~180°C×30',Nylon,Nylon Spandex 150~160°C×30', Acrylic 130 °C x 30'). (2) Padding method (cotton woven fabric): 10% film Yg / L dry cloth → padding → 100 °C drying → baking (with the impregnation method). 2. The effect indicates: (1) Hand-feeling: The hand-feeling method is used to assess the feel effects of various softener finishing samples, and the feel of softness, elasticity, slippery, cool, plump, etc. can be assessed separately, and must be rated by five or more persons, and then comprehensively sorted; (2) Whiteness: Select bleaching or whitening fabric test, visually determine the whiteness value of each sorting sample with a computer colorimeter or equivalent instrument, and examine the effect of softener on fabric whiteness; (3) Color change: The color characteristics of the finished samples were measured visually or with a computer colorimeter or equivalent instrument, and the influence of the softener on the color shade of the fabric was examined. (4) Falling color: Visually compare the dye concentration in the impregnating/padching working fluid. The higher the concentration, the worse the falling performance of the film; the lower the dye concentration, the lighter the falling color of the film and the better the color dropping performance. (5) Water absorption/hydrophilicity: Method (1): The DM/CZ 05-030 method was used to determine the capillary effect of the swatches after finishing. Method (2): The hydrophilicity of the fabric was measured using the DM/CZ 05-060 method. Men'S Long Sleeve Shirts,Men'S Polo Shirts,Long Sleeve Shirts,Custom Designed Shirts SUZHOU INNEST IMP.&EXP.TRADING CO.,LTD , https://www.suzhouinnest.com
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(a) Solubility:
October 14, 2021