Coating method of modified coating for improving coating weight
A technology for modifying coatings and coating methods, applied in fiber types, textiles and papermaking, fiber treatment, etc., can solve problems such as strong moisture permeability and weak water retention, and achieve a balanced effect of moisture permeability and water resistance
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[0016] Example 1
[0017] A coating method of modified coating to improve coating amount:
[0018] 1. Preparation of silk fibroin solution:
[0019] Put the silk fiber in a sodium carbonate solution with a mass concentration of 0.5%, add distilled water 100 times the volume of the sodium carbonate solution, and boil the water for 30 minutes. After the above operations are cycled twice, the silk fiber is washed with distilled water to obtain pure silk fibroin. After drying at 50℃, cut into pieces. Configure the calcium chloride:ethanol:water ternary system with a molar ratio of 1:2:8, heat it in a water bath at 75℃ and stir evenly, then add the chopped pure silk fibroin in batches until it is completely dissolved. The brown-yellow silk fibroin solution is dialyzed with deionized water, filtered and concentrated to obtain the silk fibroin solution, which is placed in the refrigerator for later use.
[0020] 2. Preparation of silk fibroin solution modified coating glue:
[0021] Take th...
Example Embodiment
[0024] Example 2
[0025] A coating method of modified coating to improve coating amount:
[0026] 1. Same as Step 1 of Example 1.
[0027] 2. Same as Example 1 and Step 2.
[0028] 3. Take step 2 modified coating glue and coat on polyester fabric, control the coating amount to 9.6g.cm -2 , Bake at 150℃ for 2min to test the waterproof, moisture permeability and physical and mechanical properties of the coated fabric.
[0029] Test result: The hydrostatic pressure of the modified coated fabric is 808mm, and the moisture permeability is 706g. (m 2 .d) -1 , ISO whiteness 72.8%, abrasion resistance 115R, breaking strength 332N, breaking elongation 34.0mm. It was found that by adjusting the coating amount, the waterproofness and moisture permeability of the coated fabric were balanced without affecting the physical and mechanical properties of the coated fabric.
Example Embodiment
[0030] Example 3
[0031] A coating method of modified coating to improve coating amount:
[0032] 1. Same as Step 1 of Example 1.
[0033] 2. Same as Example 1 and Step 2.
[0034] 3. Take step 2 modified coating glue to coat on the polyester fabric, control the coating amount to 16.3g.cm -2 , Bake at 150℃ for 2min to test the waterproof, moisture permeability and physical and mechanical properties of the coated fabric.
[0035] Test results: the hydrostatic pressure of the modified coated fabric is 953mm, and the moisture permeability is 696g. (m 2 .d) -1 , ISO whiteness 71.7%, abrasion resistance 122R, breaking strength 306N, breaking elongation 33.5mm. It was found that by adjusting the coating amount, the waterproofness and moisture permeability of the coated fabric were balanced without affecting the physical and mechanical properties of the coated fabric.
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