Base glue cushion sizing material containing liquid-phase disperse white carbex mixture and preparation method and application thereof
A liquid-phase dispersion, white carbon black technology, applied in vehicle parts, tire parts, transportation and packaging, etc., can solve problems such as poor durability performance, decreased heat generation performance, and increased tread hysteresis loss.
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Embodiment 1
[0068] Centrifugal concentration of natural rubber latex and silica slurry
[0069] A. Preparation of slurry
[0070] A component
[0071] formula
Composition (%)
Silica slurry (25% content)
85.47
water
13.33
Si69
0.66
stabilizer
0.410
Anti-settling agent
0.020
Dispersant
0.103
[0072] B component
[0073] formula
Composition (%)
Concentrated Natural Rubber Latex
56.31
stabilizer
0.54
water
43.15
[0074] Each was stirred at 1500~2500rpm for 2~5 minutes.
[0075] B. Mix and stir, slowly add component A to component B while stirring at a high speed, the mass ratio of component A to component B is 0.8:1, the stirring speed is 2000~6000rpm, and stir for 10 minutes.
[0076] C. Slowly add 0.3kg of glacial acetic acid to the mixture and solidify instantly.
[0077] D. Press filtration, press on the press, squeeze out...
Embodiment 2
[0084] Using fresh glue and silica paste collected directly from rubber trees
[0085] A. Preparation of slurry
[0086] A component
[0087] formula
Composition (%)
Silica slurry (25% content)
85.47
water
13.33
Si69
0.66
stabilizer
0.410
Anti-settling agent
0.020
Dispersant
0.103
[0088] B component
[0089] formula
Composition (%)
fresh glue
99.056
stabilizer
0.944
water
[0090] Each was stirred at 1500~2500rpm for 2~5 minutes.
[0091] B. Mix and stir, slowly add component A to component B while stirring at a high speed, the mass ratio of component A to component B is 1:1, the stirring speed is 2000~6000rpm, and stir for 10 minutes.
[0092] C. Slowly add 0.3kg of glacial acetic acid to the mixture and solidify instantly.
[0093] D. Press filtration, press on the press, squeeze out part of the liquid, and rec...
Embodiment 3~5
[0100] The base rubber compound containing the liquid-phase dispersed silica latex mixture comprises the components in the following table in parts by weight, wherein the comparison example is formed by mixing natural rubber and carbon black, and examples 3 to 5 are formed by mixing natural rubber and carbon black. The liquid-phase dispersed silica latex mixture (represented by LNSC in the table) prepared in Example 1 or Example 2 was mixed with or without adding natural rubber and carbon black.
[0101]
[0102] The base rubber compound containing the liquid-phase dispersed silica latex mixture of the above-mentioned embodiments 3 ~ 6 is prepared by mixing according to the following method:
[0103] (1) Plasticizing section
[0104]Add liquid-phase dispersed white carbon black latex mixture, rubber peptizer WP, stearic acid, nano-zinc oxide, microcrystalline wax, anti-aging agent RD and anti-aging agent 4020, the rotor speed is 45rpm, press the lump and keep it at 140°C, l...
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