Flame-retardant thermoplastic dynamic silicon-sulfide rubber and preparation method thereof
A technology of dynamic vulcanization and silicone rubber, which is applied in the field of flame-retardant thermoplastic dynamic vulcanization silicone rubber and its preparation, can solve the problems of no further research on flame-retardant thermoplastic dynamic vulcanization silicone rubber, and achieve large-scale industrial production and excellent mechanical properties. Performance, the effect of improving the flame retardancy of materials
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Embodiment 1～3 and comparative example 1
[0030] The silicone rubber compositions of Examples 1-3 and Comparative Example 1 are shown in Table 1, and the compositions stated in Table 1 are all parts by mass.
[0031] The silicone rubber composition of table 1 embodiment 1~3 and comparative example 1
[0032] name
TPU
Silicone rubber compound
Compatibilizer
crosslinking agent
catalyst
flame retardant
Example 1
70
30
5
2.5
0.05
10
Example 2
50
50
5
2.5
0.05
10
Example 3
30
70
5
2.5
0.05
10
Comparative example 1
70
30
5
0
0
10
[0033] The preparation method of the flame-retardant thermoplastic dynamic vulcanized silicone rubber of Examples 1-3 is as follows:
[0034] Step 1) Add thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and flame retardant in the formula shown in Table 1 to the internal mixer, and ...
Embodiment 4～6 and comparative example 2
[0042] The silicone rubber compositions of Examples 4-6 and Comparative Example 2 are shown in Table 3, and the compositions stated in Table 3 are all parts by mass.
[0043] The silicone rubber composition of table 3 embodiment 4~6 and comparative example 2
[0044] name
TPU
Silicone rubber compound
Compatibilizer
crosslinking agent
catalyst
flame retardant
Example 4
60
40
5
2
0.1
10
Example 5
60
40
10
2
0.1
10
Example 6
60
40
20
2
0.1
10
Comparative example 2
60
40
0
2
0.1
10
[0045] The preparation method of the flame-retardant thermoplastic dynamic vulcanized silicone rubber of Examples 4-6 is as follows:
[0046]Step 1) Add the thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and flame retardant in the formula shown in Table 3 into the internal mixer, and ...
Embodiment 7～10 and comparative example 3
[0055] The silicone rubber compositions of Examples 7-10 and Comparative Example 3 are shown in Table 5, and the compositions stated in Table 5 are all parts by mass.
[0056] The silicone rubber composition of table 5 embodiment 7~10 and comparative example 3
[0057]
[0058]
[0059] The preparation method of the flame-retardant thermoplastic dynamic vulcanized silicone rubber of Examples 7-10 is as follows:
[0060] Step 1) Add the thermoplastic polyurethane elastomer (TPU), silicone rubber compound, compatibilizer, crosslinking agent, and flame retardant in the formula shown in Table 5 into the internal mixer, and set the temperature to 190°C. The rotational speed is 80 rpm, the banburying time is 4 minutes, and the premix is obtained by extrusion and granulation. The thermoplastic polyurethane elastomer used in Examples 7-10 is WHT-8285 of Wanhua Chemical Company, the silicone rubber compound is EN-5150A of Dongjue Silicone Company, the compatibilizer is EMA, an...
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Abstract
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