3 lines
3.6 KiB
JSON
3 lines
3.6 KiB
JSON
{
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"protocol": "制备聚氨酯预聚体：将二异氰酸单体、丙烯酸羟酯和有机溶剂 A 加入反应容器中，其中二异氰酸单体与丙烯酸羟酯的摩尔比为 0.7:1-1:1，丙烯酸羟酯与有机溶剂 A 的摩尔比为 3:7-1:1，然后加入二月桂酸二丁基锡作为催化剂，催化剂的用量为二异氰酸单体质量的 0.1%，将以上的混合物在 50–70°C 反应 2-4h，得到聚氨酯预聚体；制备聚山梨酯改性的超亲水预聚体：将聚山梨酯用有机溶剂 B 溶解并添加到上述制备的聚氨酯预聚体中，其中，在聚山梨酯与有机溶剂 B 的混合溶解液中，聚山梨酯的质量浓度为 50‰，聚山梨酯与二异氰酸的单体的摩尔比0.5:1-1:1，将以上混合物在 50–70°C 反应2-4h，得到聚山梨酯改性的超亲水预聚体；制备超亲水透明抗雾涂层：将上述制备的聚山梨酯改性的超亲水预聚体与活性稀释剂、光引发剂均匀混合；光引发剂为聚山梨酯改性的超亲水预聚体质量的 1-2%，混合均匀后涂覆在基材上烘干，经紫外线辐射交联固化5-10s，即得到超亲水透明抗雾涂层。1. Prepare polyurethane prepolymer: Add diisocyanate monomer, hydroxy acrylate, and organic solvent A into a reaction vessel, with a molar ratio of diisocyanate monomer to hydroxy acrylate of 0.7:1-1:1, and a molar ratio of hydroxy acrylate to organic solvent A of 3:7-1:1. Then add dibutyltin dilaurate as a catalyst at a dosage of 0.1% by mass of the diisocyanate monomer. React the mixture at 50-70°C for 2-4 hours to obtain the polyurethane prepolymer. 2. Prepare polysorbate-modified super hydrophilic prepolymer: Dissolve polysorbate in organic solvent B and add it to the prepared polyurethane prepolymer, with a concentration of polysorbate at 50% in the mixed solution. The molar ratio of polysorbate to diisocyanate monomer is 0.5:1-1:1. React this mixture at 50-70°C for 2-4 hours to obtain the polysorbate-modified super hydrophilic prepolymer. 3. Prepare super hydrophilic transparent anti-fog coating: Mix the polysorbate-modified super hydrophilic prepolymer with reactive diluents and photoinitiators uniformly, where the photoinitiator accounts for 1-2% of the mass of the super hydrophilic prepolymer. Add an appropriate amount of reactive diluent to maintain the viscosity between 3000-6000 cps at 25°C. After uniform mixing, coat this on the substrate and dry it, then UV cure for 5-10 seconds to obtain the super hydrophilic transparent anti-fog coating.聚山梨酯改性的超亲水预聚体的制备方程式1. 制备聚氨酯预聚体：将二异氰酸单体、丙烯酸羟酯和有机溶剂 A 加入反应容器中，二异氰酸单体与丙烯酸羟酯的摩尔比为 0.7:1，丙烯酸羟酯与有机溶剂 A 的摩尔比为 3:7，加入二月桂酸二丁基锡作为催化剂，催化剂用量为二异氰酸单体质量的 0.1%，在 50-70°C 反应 2-4h，得到聚氨酯预聚体；2. 制备聚山梨酯改性的超亲水预聚体：将聚山梨酯用有机溶剂 B 溶解并添加到聚氨酯预聚体中，聚山梨酯的质量浓度为 50%，聚山梨酯与二异氰酸的单体摩尔比 0.5:1-1:1，在 50-70°C 反应 2-4h，得到聚山梨酯改性的超亲水预聚体；3. 制备超亲水透明抗雾涂层：将聚山梨酯改性的超亲水预聚体与活性稀释剂、光引发剂均匀混合，光引发剂为聚山梨酯改性的超亲水预聚体质量的 1-2%，添加适量的活性稀释剂使体系粘度在 25°C 下为 3000-6000 cps，涂覆在基材上烘干，经紫外线辐射交联固化 5-10s，得到超亲水透明抗雾涂层。"
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