Chemical pump used rubber sealing material
A technology for rubber seals and pumps, applied in the field of sealing rubber, can solve the problems of high production cost, insufficient chemical corrosion resistance, and low service life, and achieve the effects of low cost, wide operating temperature range, and improved service life
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Embodiment 1
[0018] A rubber sealing material for chemical pumps, which is made of the following components in parts by weight: styrene-butadiene rubber 62, fluorine rubber 25, polyethylene glycol 2, stearic acid 6, anti-aging agent 0.2, sulfur 1, polypropylene 8, modified Sexual filler12.
[0019] The modified filler is made of the following components in parts by weight: alumina micropowder 12, ceramic micropowder 8, white carbon black 4, manganese powder 1, attapulgite 0.2; the preparation method of the modified filler is: (1 ), 12 parts of alumina micropowder, 8 parts of ceramic micropowder and 0.1 part of attapulgite were uniformly mixed together by weight to obtain mixture 1, and the mixture 1 was heated to 255°C and pressurized to 0.5MPa, and kept After holding the pressure for 30 minutes, add 50% absolute ethanol by mass of the mixture 1, grind evenly after stirring, remove the absolute ethanol after grinding for 30 minutes, and let it stand for use; (2), mix 4 parts of white carbo...
Embodiment 2
[0024] A rubber sealing material for chemical pumps, which is made of the following components in parts by weight: styrene-butadiene rubber 68, fluorine rubber 30, polyethylene glycol 4, stearic acid 10, anti-aging agent 0.6, sulfur 4, polypropylene 12, modified Sexual filler18.
Embodiment 3
[0026] A rubber sealing material for chemical pumps, which is made of the following components in parts by weight: styrene-butadiene rubber 64, fluorine rubber 28, polyethylene glycol 3, stearic acid 8, anti-aging agent 0.4, sulfur 2, polypropylene 10, modified Sexual filler15.
[0027] Test and compare the compression set rate % of the sealing material under high temperature compression set (compression condition: 25% compression, 24h):
[0028] Table 1
[0029] 20℃ 50℃ 100℃ 150℃ 200℃ Example 1 0.1 1 1.8 3 5 Example 2 0.1 0.9 1.7 2.9 4.8 Example 3 0.1 1.2 1.9 3.1 5.2 Comparative example 1 3 4 8 15 20 Comparative example 2 4 6 10 18 25
[0030] Among them, Comparative Example 1 is: a rubber sealing material for chemical pumps, made of the following components in parts by weight: styrene-butadiene rubber 68, fluororubber 30, polyethylene glycol 4, stearic acid 10, anti-aging agent 0.6, sulfur 4. Polypropylene...
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