摘要
以六水合三氯化铁(FeCl_3·6H_2O)与对苯二甲酸(H_2BDC)为原料,通过溶剂热法制备了以H_2BDC为配体的铁基有机骨架化合物(MIL-53-Fe)。当以皮质量3%铬粉(以Cr_2O_3质量计为皮质量的0.75%)与皮质量2%超声后的MIL-53-Fe对酸皮进行结合鞣制时,鞣制后皮革收缩温度(T_s)达到101.8℃,与实验中纯铬鞣制皮革相比减少了铬鞣剂用量40%,鞣制后的皮革增厚率达到18.1%,抗张强度为29.56 MPa,断裂伸长率为89.77%,耐水洗性好,铬鞣剂的吸收率较高。将MIL-53-Fe进行单独鞣革,鞣制后皮革收缩温度为72.5℃,T_s相比于酸皮有所提高,表现出鞣性。结果表明,MIL-53-Fe可与铬鞣剂进行结合鞣制,能够促进铬鞣剂的吸收,提高成革耐水洗性。
Fe-based metal organic framework(MIL-53-Fe)was prepared by solvent thermal method using Fe Cl_3·6H_2O and terephthalic acid(H_2BDC)as raw materials.When the dosage of chrome tanning agen was 3%acid leather weight(as for Cr_2O_3 is 0.75%),dosage of ultrasonic MIL-53-Fe was 2%acid leather weight,the shrinkage temperature(T_s)of tanned leather reached 101.8℃,reducing the dosage of chrome tanning agent 40%,tanned leather thickening rate reached 18.1%,the tensile strength reached 29.56 MPa the elongation at break was 89.77%,the tanned leather performed a good washing durability and high absorption rate of chrome tanning agent.The shrinkage temperature of MIL-53-Fe tanned leather reached72.5℃,which showed a certain improvement compared with that of the acid skin,indicating that MIL-53-Fe had some tanning.The results showed that MIL-53-Fe can be used with chrome tanning agent which can promote the absorption of chrome tanning agent and improve the washing durability of leather.
引文
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