A thermoplastic vulcanized elastomer sealing ring
A thermoplastic vulcanization and elastomer technology, applied in the direction of engine seals, mechanical equipment, engine components, etc., can solve the problems of high conveying volume, large pipe diameter, insufficient O-ring sealing effect to achieve long-lasting sealing effect, etc., to improve the sealing effect. effect, improved seal durability, high resilience effect
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[0041] In one embodiment, the preparation method of the reinforced polypropylene comprises the following steps: taking bis(2,4-dicumylphenyl) pentaerythritol diphosphite, N,N'-bis(2,2,6, 6-Tetramethyl-4-piperidinyl)-1,3-benzenedicarboxamide and ethanol are mixed uniformly in a weight ratio of 1:1:2-5 to obtain a modifier; the polypropylene is soaked in the modifier and then ultrasonically stirred at a frequency of 6000-8000 Hz for 10-20 min, taken out and dried at 60° C. for 15-30 min to obtain the reinforced polypropylene.
[0042]Using the above technical solution, bis(2,4-dicumylphenyl) pentaerythritol diphosphite, N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)- The modifier obtained by adding 1,3-phthalamide to ethanol and blending and diluting it is combined with polypropylene under ultrasonic stirring, and the obtained reinforced polypropylene has higher thermal stability, which avoids thermal decomposition during the vulcanization process and affects the thermoplastic vulc...
Embodiment 1
[0057] like Figure 1-3 As shown, a thermoplastic vulcanized elastomer sealing ring includes a first sealing ring 1, a transition ring 2 and a second sealing ring 3 connected in sequence, the transition ring 2 is a concave arc-shaped sealing ring, and the first sealing ring 1. The transition ring 2 and the second sealing ring 3 are integrally injection molded from thermoplastic vulcanized elastomer.
[0058] In this embodiment, the cross section of the first sealing ring 1 is rectangular, and the inner corners of the first sealing ring 1 are set as rounded corners.
[0059] In this embodiment, both sides of the transition ring 2 are provided with a rounded corner structure.
[0060] The adoption of the above technical solution is more favorable for the thermoplastic vulcanized elastomer sealing ring to be clamped between the two conveying pipes, and the sealing effect of the thermoplastic vulcanized elastomer sealing ring when connecting the conveying pipes is greatly improve...
Embodiment 2
[0064] The difference between this embodiment and Embodiment 1 is:
[0065] like Figure 4-6 As shown, in this embodiment, the cross section of the first sealing ring 1 is hemispherical, and the inner surface of the first sealing ring 1 is a smooth surface.
[0066] In this embodiment, the cross-section of the second sealing ring 3 is triangular, and the angle of the second sealing ring 3 away from the transition ring 2 is a right angle; the outer vertex of the first sealing ring 1 and the The outer edges of the second sealing ring 3 are not flush. Specifically, the outer vertex of the first sealing ring 1 is 2.5 mm lower than the outer edge of the second sealing ring 3 .
[0067] In this embodiment, one side of the transition ring 2 is set as a rounded corner structure, and the other side of the transition ring 2 is set as an inclined surface.
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Abstract
Description
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Application Information
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