Bu Xingyu,Wang Lei*,Wen Jinglong,et al.Synthesis and properties of silane-modified epoxy phenylpropylene emulsions[J].Plating & Finishing,2024,(10):83-88.
硅烷改性环氧苯丙乳液的合成及性能研究
- Title:
- Synthesis and properties of silane-modified epoxy phenylpropylene emulsions
- Keywords:
- epoxy modification; silane modification; emulsion polymerization; acrylic emulsion; water-based coating
- 分类号:
- TQ630.7
- 文献标志码:
- A
- 摘要:
- 利用硅烷偶联剂KH-560和环氧E-51，通过种子乳液聚合的方法，对传统苯丙乳液进行有机硅与环氧树脂改性，制备了新型的硅烷改性环氧苯丙乳液，并探索了工艺条件对乳液性能和涂膜性能的影响。结果表明：乳化剂用量为6.5%、软硬单体比例为1.6∶1、环氧树脂E-51用量为5%、硅烷偶联剂KH-560用量为10%时，合成出的新型硅烷改性环氧苯丙乳液具有较高的固含量与转化率，分别为43.75%、87.5%，具有较低的凝胶率和吸水率，分别为0.98%、71.43%，乳液外观呈乳白带明显蓝相，乳液稳定性良好。初步研究了硅烷偶联剂KH-560和环氧树脂E-51对苯丙乳液的改性机理。
- Abstract:
- Using silane coupling agent KH-560 and epoxy E-51, a new type of silane-modified epoxy phenylpropylene emulsion was prepared by modifying traditional phenylpropylene emulsion with silicone and epoxy resin through seed emulsion polymerization, and the effects of process conditions on the properties of emulsion and coating film properties were explored. The results show that when the amount of emulsifier is 6.5%, the ratio of hard and soft monomer is 1.6∶1, the amount of epoxy resin E-51 is 5%, and the amount of silane coupling agent KH-560 is 10%, the new silane-modified epoxy phenylpropylene emulsion has higher solid content and conversion rate of 43.75% and 87.5%, respectively, and lower gel rate and water absorption rate of 0.98% and 71.43%, respectively. The appearance of the emulsion is milky white with obvious blue phase, and the stability of the emulsion is good. The modification mechanism of silane coupling agent KH-560 and epoxy resin E-51 on phenylpropylene emulsion was initially investigated
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