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Acrylic acid-maleic acid-phosphine terpolymer
[Physical and chemical properties] light yellow transparent viscous liquid
[Preparation method] In a 250mL four-necked flask equipped with a reflux condenser, thermometer, electric stirrer, and dropping funnel, add maleic anhydride and distilled water according to a certain ratio , heat and stir under reflux condensation, and wait until maleic anhydride After complete dissolution, when the temperature is raised to 80°C, the initiator is added dropwise, and the mixture of acrylic acid and sodium hypophosphite is added dropwise at the same time, and the dropping time is controlled to be about 1h
[Application] Under the same water quality conditions, in accordance with GB/T16632-2008 standard for scale inhibition performance measurement, the scale inhibition rate of phosphino acrylic acid terpolymer at 5mg/L is significantly higher than that of amino trimethylene phosphonic acid and diethylene tripolymer.
Related link: Acrylic acid/polyethylene glycol monomethyl ether acrylate-binary copolymer