Hydroxyethylcellulose (HEC) yog cov dej-soluble polymer dav siv hauv ntau yam lag luam xws li kev tsim kho, tshuaj pleev ib ce, tshuaj, thiab roj drilling. HEC muaj ntau yam khoom tshwj xeeb uas ua rau nws yog ib qho khoom txaus nyiam rau kev lag luam, nrog rau nws cov solubility siab hauv dej, nws muaj peev xwm t ...
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