中文摘要：

采用含羧基的芳香族合成鞣剂（SCS）与硫酸铝结合鞣制黄牛皮,考察了水杨酸钠、酒石酸钠、柠檬酸钠等3种蒙囿剂在等物质的量用量下对该结合鞣法鞣制效应的影响。发现蒙囿作用较温和的水杨酸钠和酒石酸钠可提高结合鞣革中Al（Ⅲ）的结合量及其分布均匀性,使坯革的综合性能得以提高;而蒙囿作用最强的柠檬酸钠虽然可以使革的湿热稳定性显著提高,但革中Al（Ⅲ）的结合量及其分布均匀性最差,坯革的综合性能也最差。通过改变蒙囿剂的用量,也可以调控其对Al（Ⅲ）的蒙囿作用。研究发现,当酒石酸钠用量为1%时,坯革的收缩温度和物理机械性能均达到最佳值,而增加和降低酒石酸钠用量均导致鞣制效应的降低。综上所述,适当选择蒙囿剂及其用量,既可以改善Al（Ⅲ）的渗透性,又能保持Al（Ⅲ）与皮胶原和合成鞣剂间良好的反应活性,从而显著提高这类结合鞣法的鞣制效果。

英文摘要：

The combination tanning of cattle hide was performedusing carboxyl containing aromatic syntan （SCS） and aluminum sulfate.Effects of 3 kinds of masking agents （sodium salicylate, sodium tartrate andsodium citrate）on the combination tannage wereinvestigated at the same amount of substance.The experiments showed thatsodium salicylate and sodium tartrate with mild masking actionwere able to promotethe absorptivityand distribution evenness of A1 （III） in leathers,so as to improveproperties of leathers. But a lower absorptivity and distribution evenness of A1 （III）, and the worseleather properties were obtained when sodium citrate with strongest masking action was used.The masking action of a masking agent on A1 （III） can be controlled by changing its amount being used. It was found that optimal overall performances of leather, including Ts andphysical properties, were achievedwhen 1%sodium tartrate was used. All these results indicated that the use of appropriate masking agentswith rational amount can promote the penetration of A1 （III） in pelt while keep a proper reactivity of AI（III） with collagen and syntan, which remarkably improves the overall properties of the combination tanned leather.