Formula and preparation method of rubber coating material for tire bead wire
A technology of compound formula and bead steel wire, which is applied in the field of rubber processing, can solve the problems affecting the quality of bead steel wire coating, easy occurrence of loose loops and spinning, aging of bead steel wire coating, etc., and optimize the formula preparation process , best performance and quality, the effect of improving scorch resistance and aging resistance
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Embodiment 1
[0025] Preparation of the bead wire gluing compound formula of the present invention (Example 1, Example 2 and Example 3) and common bead wire gluing compound formula (Comparative Example 1), the specific formula is shown in Table 1, and Table 1 is Table of four formulas.
[0026] Table 1 Four kinds of formula ratio table
[0027] Material Example 1 Example 2 Example 3 Comparative example 1 natural rubber 55 65 60 80 SBR 25 20 15 20 Chlorosulfonated polyethylene rubber 20 15 25 / Reclaimed rubber 70 90 50 / N660 carbon black / / / 102 CBp carbon black 110 130 120 / Easter 30 20 10 / stearic acid 4 4 4 2 Zinc oxide 4 4 4 4 Activated Magnesium Oxide 1 0.75 1.25 / Antiaging agent 4020 0.7 0.7 0.7 1 Antiaging agent RD 0.6 0.6 0.6 0.5 Antiaging agent NBC 0.4 0.3 0.5 / tackifying resin 3 3 3 3 Aromatic oil 16 16 16 16 insoluble ...
Embodiment 2
[0029] Method for preparing tire bead wire hanging glue compound formula
[0030] Common bead wire hanger compound formula (comparative example 1), the bead steel wire hanger compound was prepared by a conventional bead wire hanger compound preparation method.
[0031] For the bead wire hanger compound formulations (Example 1, Example 2 and Example 3) of the present invention, the compound is prepared according to the following steps.
[0032] S1: according to the composition ratio, each component of preparing the tire bead wire hanging glue compound formula is weighed respectively;
[0033] S2: One-stage mixing rubber: Put natural rubber, styrene-butadiene rubber, chlorosulfonated polyethylene rubber, reclaimed rubber, zinc oxide and stearic acid into the internal mixer and mix for 20 seconds, then mix Yishite and 54% CBp charcoal Put black into the internal mixer and continue mixing for 25 seconds, then inject the aromatic oil into the internal mixer and continue mixing for...
Embodiment 3
[0039] Physical and chemical performance test of bead wire hanging glue
[0040] In embodiment two, four kinds of formulations (embodiment 1, embodiment 2, embodiment 3 and comparative example 1) are prepared respectively the bead wire hanging glue product, carry out physical and chemical performance test, test result is as follows figure 1 .
[0041] Depend on figure 1 It can be seen that the bead wire glued Mooney scorch time provided by the present invention is 18.1-19.3min, and the scorch time after 5 extrusions is 3.0-3.5min, and scorch occurs after repeated extrusion 6 times; Comparative Example 1 The prepared bead wire hanger has a Mooney scorch time of 11.0 minutes, a scorch time of 4.6 minutes after 2 extrusions, and scorch after repeated extrusion 3 times.
[0042] We know that the occurrence of scorch will lead to an increase in the viscosity of the rubber material and reduce the processability of the rubber material. Therefore, compared with ordinary bead wire h...
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Abstract
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