Humic acid (HA ) was abstracted from leonardite,and a composite superabsorbent (HA PSA ) was prepared by compounding poly (acrylic acid ) and lignitic humic acid.
以风化褐煤为原腐植(HA),将HA与保水剂(PSA)复合,获得HA保水剂(HA-PSA)。
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