关键词: 表面活性剂, 有机化合物, 丙烯酸, 对乙烯苯磺酸, 白泥, 复合材料

Abstract: Lime mud was modified by wet method using acrylic acid or vinyl benzenesulfonic acid as modifier, and further coating of the modified lime mud was performed using paraffin to obtain the reactive organic modified lime mud.The lime mud/NBR (400:100) master-batch prepared with the reactive organic modified lime mud as rubber filler was used to prepare lime mud/NBR composites at different loadings of lime mud.The effect of the master-batch dosage on the performance of the composites was examined.Experimental results showed that the mechanical performance of the composite materials increases first and then decreases with the increasing of the dosage of the adding modifier (in terms of quality of dry lime mud).The best mechanical performance of the composite materials was achieved when the acid surfactant dosage was 2% of the white clay master-batch and the master-batch copies was 100phr.The effect of the modifiers on the mechanical performance of the composite was examined.For the composite materials with acrylic modified lime mud master-batch, the tensile strength is 8.3MPa, elongation at break is 386%, 300% modulus is 3.7MPa, and the Shore "A" is 79.And for the composite materials with vinyl benzene sulfonic acid modified lime mud master-batch, tensile strength is 9.8 MPa, elongation at break is 652%, 300% modulus is 4.2MPa, and the Shore "A" is 78.The results showed that the mechanical properties of rubber material could be improved greatly by using the modifiers.

Key words: surfactants, organic compounds, acrylic acid, vinyl benzenesulfonic acid, lime mud, composites