The invention discloses a liquid rubber prepared by using waste latex and a preparation method thereof. The preparation method comprises the following steps: sorting and cleaning the waste latex, adding it to a rubber breaking device for crushing and metal removal to a certain size, continuously conveying it to a drying device to remove low components on the surface, feeding it into a co-rotating twin-screw extruder through a conical twin-screw extruder, greatly breaking C-C, C-S and S-S bonds under the action of the strong material conveying, shearing and mixing capacity of the extruder, then performing continuous cooling and exhaust through a counter-rotating twin-screw extruder, and filtering to obtain the liquid rubber completely soluble in toluene. Compared with the liquid rubber prepared by synthetic methods in the past, the raw material cost used is greatly reduced, no solvent is needed in the production process, the technical route is simpler, and the prepared liquid rubber has lower cost and similar performance.
Country Code: CN
Application Number: CN202311857974.7
