【摘要】 在高取代度羧甲基淀粉（ＣＭＳ）合成工作基础上，深入研究了其应用性能，包括糊液粘度，流变性能，酶对糊料作用生成还原糖的性能，认为ＣＭＳ在ＤＳ≥０．５，质量分数在２％～８％之间，能够代替价格较高的海藻酸钠用于印花糊料，以降低生产成本；研究了ＤＳ≥０．４ＣＭＳ在油田钻井泥浆方面的应用，认为高取代度的ＣＭＳ有着较好的降失水作用和较高的抗盐能力。更多还原

【Abstract】 The application properties of carboxyl methyl starch with high degree of substitution prepared by literature was researched, which included the viscosity of the paste, the rheological properties and the abilities of formation reducing sugar on the effect of enzyme. The result showed that CMS which DS is higher than 0.5,the concentration is between 2%8%,may be substituted for sodium alginate with high price in order to decreasing the product cost. The CMS which DS is higher than 0.4 had good decreasing loss of water and high resistance to out of salt by its application in the drilling mud.更多还原