Method for preparing powdered rubber in stuffing type with extra fine calcium carbonate
A technology of ultrafine calcium carbonate and powder rubber, which is applied in the field of preparing ultrafine calcium carbonate filled powder rubber, can solve the problems of unfavorable mechanical properties of vulcanized rubber, difficult to disperse, large particle size, etc., and achieves good coating effect and easy processing. , The effect of storage stability
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[0037] Example
[0038] (1) Preparation of materials
[0039] Prepare the ingredients according to the proportions in Table 1.
[0040] Reagent dosage and process condition of table 1 embodiment
[0041] (2) Emulsification of ultrafine calcium carbonate
[0042] According to the formula listed in Table 1, add 50 kg of water and surfactant OP-10 into a 100-liter stirring tank, stir at medium speed, after all OP-10 is dissolved, add ultrafine calcium carbonate during stirring, and continue stirring For 10 to 30 minutes, the ultrafine calcium carbonate and the surfactant solution form a uniform suspension.
[0043] (3) Heat treatment of latex
[0044] Add metered deionized water to the latex, adjust the solid content of the latex to 7-15%, add the above-mentioned ultra-fine calcium carbonate suspension to the latex during stirring, and after mixing evenly, heat the system in a water bath to 70-90 ° C, press For the formula listed in Table 1, add a metered hot ...
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