Rare earth complex modified cold-resistant fluororubber gross rubber and preparation method thereof

Abstract

The invention relates to rare earth complex modified cold-resistant fluororubber gross rubber and a preparation method thereof. The gross rubber is prepared by blending fluororubber crude rubber, a rare earth complex, an acid-acceptor, a reinforcing filling agent, a vulcanizing agent and an accelerating agent. The preparation method of the gross rubber comprises the following steps of: (1) performing plastication covered rolling on the fluororubber crude rubber, and adjusting the roller spacing to ensure that spacer gel exists between two rollers; (2) adding the rare earth complex, the acid-acceptor, the reinforcing filling agent, the vulcanizing agent and the accelerating agent in sequence, controlling the roller temperature to be between 40 and 50 DEG C, taking down thin sheets when the rubber materials are uniformly mixed, and placing the gross rubber for 24 hours; and (3) controlling the roller temperature to be 40 DEG C, adjusting the roller spacing to be 0.2mm, performing re-milling to beat triangular covered thin sheets for more than 10 times, adjusting the roller spacing to be 2mm, and discharging the sheets to obtain the gross rubber. The rare earth complex modified cold-resistant fluororubber gross rubber has the advantages of good cold resistance and medium resistance, and the preparation method is simple and convenient, low in cost, and easy to realize industrial production.

Description

Technical field: [0001] The invention relates to a cold-resistant fluororubber compound modified by a rare earth complex and a preparation method thereof, belonging to the field of special rubber. Background technique: [0002] Fluorine rubber refers to a synthetic polymer elastomer in which fluorine atoms are connected to carbon atoms in the main chain or side chain. Compared with other rubbers, it has a series of excellent properties such as oil resistance, high temperature resistance, solvent resistance, strong acid resistance, strong oxidant resistance, flame retardancy, and aging resistance. It is widely used in national defense, aerospace, electronic communications, vehicles and ships, and petrochemicals. and other fields. With the development and progress of technology, fluororubber, as a high-performance elastomer, has continuously expanded its application range and greatly increased its demand, which also puts forward more stringent requirements for it. However, f...

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Problems solved by technology

[0007] The object of the present invention is to provide cold-resistant fluororubber compound modified by rare earth complexes to overcome the defects of poor cold resistance and difficult molding of fluororubber. The production of a kind of fluororubber products, the formula can also significantly improve the cold resistance of fluororubber, another purpose of the present invention is to provide a preparation method of cold-resistant fluororubber compound modified by rare earth complexes

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