【摘要】 本研究合成了水性涂料交联用的醚化三聚氰胺甲醛树脂交联剂,测试了合成产物的物理性质。采用成膜交联法,将醚化的三聚氰胺甲醛应用于丙烯酸树脂乳液的交联改性。通过改变交联剂的用量,探讨了其作为水性交联剂对丙烯酸酯树脂乳液及涂膜后各项性能及微观结构的影响。SEM测试结果表明,交联改性乳液在高温成膜过程中,分子内部形成了空间网状交联结构,更容易形成致密连续的膜。加入交联剂后,改性乳液涂膜后的力学性能、耐水性及其热稳定性能都有了一定的提高,当R值为7时,改性乳液成膜后的拉伸强度为8.00MPa,吸水率为15.8%。更多还原

【Abstract】 The synthesis of etherified melamine-formaldehyde resin(MF)as cross-linker was dealed,which was used to modify acrylic resin emulsion.The properties of modified emulsions with different amounts of cross-linker and their films were measured.SEM photos of films showed that a compact film was formed because of crosslinked structure among the macromolecular chains.The mechanical properties,water resistance and thermostability of films were increased after crosslinked by MF.The tensile strength and water absorption ratio were 8.00MPa and 15.8%,respectively.更多还原