A kind of puncture-resistant rubber waterstop and its preparation process
A rubber waterstop, puncture-resistant technology, used in belts, shaft equipment, mining equipment, etc., can solve problems such as reducing the service life of waterstops, avoid stress concentration, increase tensile strength, and improve bonding. the effect of strength
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Embodiment 1
[0034] A puncture-resistant rubber waterstop, comprising the following raw materials in parts by weight, 40 parts of natural rubber, 60 parts of ethylene-octene copolymer, 3 parts of maleic anhydride, 2 parts of zinc oxide, and 2 parts of stearic acid , 80 parts of carbon black, 5 parts of silica, 50 parts of modified fly ash, 20 parts of asphalt, 6.5 parts of vulcanizing agent, and 1.4 parts of accelerator.
[0035] Preparation Process:
[0036] The first step, mixing
[0037] Mix ethylene-octene copolymer, carbon black, zinc oxide, and stearic acid in an internal mixer for 60 seconds. When the temperature rises to 90°C, add maleic anhydride and mix for 60 seconds. The internal mixer speed is 50 rpm. Min, add natural rubber, mix temperature to 130°C, add silica and modified fly ash, mix for 20s, internal mixer speed 40 rpm, add asphalt when the temperature rises to 160°C, mix for 10s to remove glue .
[0038] After standing at room temperature for 8 hours, add vulcanizing ...
Embodiment 2
[0042] A puncture-resistant rubber waterstop, comprising the following raw materials in parts by weight, 40 parts of natural rubber, 90 parts of ethylene-octene copolymer, 9 parts of maleic anhydride, 2 parts of zinc oxide, and 4 parts of stearic acid , 50 parts of carbon black, 20 parts of silica, 70 parts of modified fly ash, 40 parts of asphalt, 2.5 parts of vulcanizing agent, and 3.5 parts of accelerator.
[0043] Preparation Process:
[0044] The first step, mixing
[0045] Mix the ethylene-octene copolymer, carbon black, zinc oxide, and stearic acid in an internal mixer for 120 seconds. When the temperature rises to 110°C, add maleic anhydride and mix for 90 seconds. The speed of the internal mixer is 70 rpm. Min, add natural rubber, mix temperature to 140°C, add silica and modified fly ash, mix for 60s, internal mixer speed 60 rpm, add asphalt when the temperature rises to 180°C, mix for 20s to remove glue .
[0046] After standing at room temperature for 16 hours, a...
Embodiment 3
[0050] A puncture-resistant rubber waterstop, comprising the following raw materials in parts by weight, 30 parts of natural rubber, 70 parts of ethylene-octene copolymer, 4.5 parts of maleic anhydride, 6 parts of zinc oxide, and 4 parts of stearic acid , 60 parts of carbon black, 9 parts of silica, 54 parts of modified fly ash, 28 parts of asphalt, 0.5 parts of sulfur, 5 parts of dicumyl peroxide, 1.5 parts of benzothiazole disulfide, N-cyclohexyl-2 - 0.8 part of benzothiazole sulfenamide.
[0051] Preparation Process:
[0052] The first step, mixing
[0053] Mix ethylene-octene copolymer, carbon black, zinc oxide, and stearic acid in an internal mixer for 70 seconds. When the temperature rises to 100°C, add maleic anhydride and mix for 70 seconds. The speed of the internal mixer is 55 rpm. Min, add natural rubber, mix temperature to 135°C, add silica and modified fly ash, mix for 30s, internal mixer speed 50 rpm, add asphalt when the temperature rises to 165°C, mix for 15s...
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Abstract
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