A preparation method of multi-layer fluoroether rubber with regular arrangement of fillers by electrospinning method
An electrospinning method and fluoroether rubber technology, applied in the field of fluoroether rubber, can solve the problems of lack of chemical composition, inability to comprehensively improve the performance of fluoroether rubber, difficulties in fluoroether rubber, etc., and achieve excellent product performance and good sealing application prospects. , Improve the effect of sealing performance
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[0028] Such as figure 1 Shown is a schematic diagram of the preparation method of multi-layer fluoroether rubber with regular arrangement of fillers by electrospinning method of the present invention. The preparation method of multi-layer fluoroether rubber with regular arrangement of fillers by electrospinning method of the present invention includes the following steps:
[0029] Step (1): kneading the filler and the fluorine rubber, and preparing the kneaded filler-containing fluorine rubber into a solution, which is used as a spinning solution for later use. The solvent for preparing the solution is one or a combination of tetrahydrofuran THF or N,N-dimethylformamide DMF, and the mass concentration of the prepared solution is 5-10%.
[0030] The filler is one or a combination of nano-scale carbon black, white carbon black, carbon nanotubes, graphene or montmorillonite. The percentage content of the filler mass in the total mass of the filler and the fluoroether rubber is l...
Embodiment 1
[0040] 1. Weigh 10g of carbon black N330 and 100g of fluoroether rubber for mixing. Put the kneaded rubber into a THF solvent, and prepare a solution with a content of 6 wt % (mass concentration) as a spinning solution.
[0041]2. According to the formula (parts by mass): 100 parts of fluoroether rubber, 4 parts of 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane, 2 parts of triallyl isocyanurate parts for mixing. The refined fluoroether rubber was made into a 20wt% (mass concentration) DMF solution, and a rubber film with a thickness of 0.05 mm was prepared by casting. Then it was wrapped and fixed on the drum surface of the electrospinning machine.
[0042] 3. Weigh 4mL of spinning solution for electrospinning: at room temperature, the humidity is controlled below 20%, the spinning voltage is set to 15KV, the propulsion speed of the propulsion pump is 0.2mL / h, and the spinning drum is used for receiving. The rotating speed of the drum is 500r / min, and the receiving distance b...
Embodiment 2
[0045] 1. Weigh 1g of graphene and 100g of fluoroether rubber for mixing. Put the kneaded rubber into a THF solvent, and prepare a solution with a content of 8 wt % (mass concentration) as a spinning solution.
[0046] 2. The preparation method of rubber film is with embodiment 1.
[0047] 3. Weigh 1.5mL of spinning solution for electrospinning: at room temperature, the humidity is controlled below 20%, the spinning voltage is set to 10KV, the propulsion speed of the propulsion pump is 0.5mL / h, and the spinning drum is used for receiving The rotating speed is 300r / min, and the receiving distance is 8cm. The high-pressure spinneret moves back and forth with a moving distance of 5 cm and a speed of 1 cm / s.
[0048] 4. Repeat step (3) with the enriched spun rubber film to prepare a plurality of identical enriched spun rubber films, and cut the rubber film into rubber blocks with an area of 25cm×30cm. Stack the cut rubber blocks in the same direction, and the number of stacke...
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