However, one of the key problems that retarded their application was their poor high temperature oxidation resistance.
但高温抗氧化性能较差是制约其应用的关键问题。
A low cost retarded high range water reducing agent GCL1 was prepared via oxidation and sulfonation modification using calcium lignosulfonate as primary raw material.
研究了木素磺酸钙的氧化磺化等复合改性工艺，合成了以木素磺酸钙为主要原料的低成本缓凝高效减水剂GCL1。
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