水性聚碳化二亚胺交联剂的合成及性能研究(Ⅱ)——水性阴离子聚碳化二亚胺交联剂

Synthesis and Application of Aqueous Polycarbodiimide Crosslinking Agent(Ⅱ): aqueous anionic polycarbodiimide crosslinking agent

以异佛尔酮二异氰酸酯(IPDI)、羟乙基磺酸钠(SHES)、3-甲基-1-苯基膦杂环戊烯-1-氧化物(MPPO)为原料,合成了水性阴离子聚碳化二亚胺交联剂。主要探讨了合成条件:亲水封端剂、封端温度及封端剂用量等因素对产物性能的影响,得出较佳的工艺条件。将成品在丙烯酸涂饰剂中应用,结果表明:成膜抗张强度由2.813MPa提高到6.147MPa;在水、0.05mol/LNaOH和乙酸丁酯中的溶胀率分别由52.3%降至26.4%、202.4%降至140.4%、843.2%降至354.8%。在丙烯酸涂饰剂中加入交联剂,涂饰后成革的耐干、湿擦性能提高。

Aqueous anionic polycarbodiimide crosslinking agent was synthesized with isophorone diisocyanate（IPDI）,sodium hydroxyethyl sulfonate（SHES） ,3-methyl- 1-phenyl- 2- phosopholene -1-oxide（MPPO）as raw material. The influences of different synthesis conditions such as the hydrophilic end-blocking agent and temperature,as well as the dosage of end-blocking on the blocking reaction were investigated and the optimal technology condition was obtained. The developed crosslinking agents were introduced to acrylic finishing agent. It show that tensile strength of the film increases from 2.813MPa to 6.147MPa. The swelling rate in water,0.05mol/L NaOH,butyl acetate decreases from 52.3% to 26.4%,202.4% to 140.4%,843.2% to 354.8% respectively. The rub fastness of dry and wet are improved by adding the crosslinking agent to the acrylic finishing agents.