Dehydration process of the fluoro-rubber
A fluorine rubber and process technology, applied in the field of synthetic polymer chemistry and organic chemistry, can solve the problems of fluorine rubber, such as yellowing and darkening, unstable operation of equipment, and damage to product quality, to achieve full contact, large specific heat capacity, and difficulty in condensation and moisture return Effect
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Embodiment 1～4
[0054] The fluororubber with Mooney viscosity of 5-10 is selected and processed according to the fluororubber dehydration process described in the present invention.
[0055] Soak the fluororubber wet material in an ion-free water system; the temperature of the ion-free water system is 40-140° C., and the pressure of the ion-free water system is 0-3 bar g.
[0056] Water has a large specific heat capacity and high fluidity, so it can be used as a good heat transfer medium, so as to balance the material temperature well and prevent local overheating; fluororubber has very high requirements on purity, and solutes in ordinary water may contaminate the material. After drying, these solutes will remain in the material, which is like scale in layman's terms; at the same time, the material contains residual hydrofluoric acid, hydrogen chloride, and other impurities, etc., which are harmful components, and they dissolve in water to become corresponding ions , the use of ion-free water...
Embodiment 5～8
[0064] Fluorine rubber with a Mooney viscosity of 10-39 is selected and processed according to the dehydration process of the fluorine rubber described in the present invention.
[0065] Soak the fluororubber wet material in an ion-free water system; the temperature of the ion-free water system is 40-140° C., and the pressure of the ion-free water system is 0-3 bar g.
[0066] Then it is put into the calendering equipment for roller calendering, and calendering obtains a thin sheet with a thickness of 0.2-3.0 mm; the calendering equipment is placed in an ion-free water system; the temperature of the ion-free water system is 40 ° C ~ 140 ° C, the The pressure of the ion-free water system is 0-3 bar g.
[0067] Finally, put the flakes into the microwave drying equipment for drying, and dry for 1-10 minutes to obtain the finished fluorine rubber; during the drying process, feed microwaves into the microwave drying equipment, and at the same time, pass hot dry air into the microwa...
Embodiment 9～12
[0070] Fluorine rubber with a Mooney viscosity of 61-100 is selected and processed according to the dehydration process of the fluorine rubber described in the present invention.
[0071] Soak the fluororubber wet material in an ion-free water system; the temperature of the ion-free water system is 40-140° C., and the pressure of the ion-free water system is 0-3 bar g.
[0072] Then it is put into the calendering equipment for roller calendering, and the calendering obtains a sheet with a thickness of 0.2-3.0 mm; the calendering equipment is placed in an ion-free water system; the temperature of the ion-free water system is 40 ° C ~ 140 ° C, the The pressure of the ion-free water system is 0-3 bar g.
[0073] Finally, put the flakes into the microwave drying equipment for drying, and dry for 1-10 minutes to obtain the finished fluorine rubber; during the drying process, feed microwaves into the microwave drying equipment, and at the same time, pass hot dry air into the microwa...
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Abstract
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