silane coupling agent

A method for preparing a silane coupling agent palygorskite, comprising the steps of: acid treatment (a) a silane coupling agent: A silane coupling agent was added to acetic acid using ethanol adjusting PH = 3 ~ 3.5, stirring at room temperature 0.2 ~ I h, acidified to give the silane coupling agent; said silane coupling agent is vinyl trimethoxy silane; (2) activation of palygorskite: palygorskite clay was added to the NaOH solution, at 45 ~ 65 ° C under magnetic stirring for 12 ~ 48h, then washed with distilled water to neutral, centrifuged and dried to yield the activated palygorskite, grinding stand; (3) Preparation of silane coupling agent palygorskite: A Activated palygorskite dispersed in ethanol - water mixture, the ultrasonic dispersion 15 ~ 40 min, then added to the above acidified silane crosslinker, the reaction mixture was stirred at room temperature 12 ~ 24h, centrifuged, dried, and then sew xylene solution in s extract 24 ~ 48 h; After Soxhlet extraction is complete, drying, grinding, that was grafted>silane coupling agent palygorskite.