Low-smoke anti-aging cross-linked elastomer and preparation method thereof
A cross-linked elastomer, aging-resistant technology, applied in the field of thermoplastic elastomers, can solve the problems of difficult processing, deterioration of the mechanical properties of the flame retardant material matrix, poor compatibility, etc.
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[0043] Example 1:
[0044] A low smoke aging resistant crosslinking elastomer, comprising the following components (unit: g):
[0045]
[0046] The preparation method comprises the following steps:
[0047] Step 1: Prepare each raw material according to the weight;
[0048] Step 2: Mix SEBS with softening oil and stir evenly, let stand for 20 hours to obtain a pre-softened elastomer;
[0049] Step 3: The pre-softened elastomer and the remaining components obtained in step 2 are mixed evenly through a high-speed mixer to obtain a mixed material;
[0050] Step 4: Put the mixed material into the twin screw extruder for melt kneading and extrusion, the extrusion temperature is 250 °C, and the screw speed is 500rpm;
[0051] Step 5: The melt output extruded by the extruder die is cooled, and then the low smoke aging resistant crosslinking elastomer and its preparation method are obtained after irradiation crosslinking by ultraviolet irradiation equipment.
Example Embodiment
[0052] Example 2:
[0053] A low smoke aging resistant crosslinking elastomer, comprising the following components (unit: g):
[0054]
[0055] The preparation method comprises the following steps:
[0056] Step 1: Prepare each raw material according to the weight;
[0057] Step 2: Mix SEBS with softening oil and stir evenly, let stand for 40 hours to obtain a pre-softened elastomer;
[0058] Step 3: The pre-softened elastomer and the remaining components obtained in step 2 are mixed evenly through a high-speed mixer to obtain a mixed material;
[0059] Step 4: Put the mixed material into the twin screw extruder for melt pinching and extrusion, the extrusion temperature is 260 °C, and the screw speed is 550rpm;
[0060] Step 5: The melt output extruded by the extruder die is cooled, and then the low smoke aging resistant crosslinking elastomer and its preparation method are obtained after irradiation crosslinking by ultraviolet irradiation equipment.
Example Embodiment
[0061] Example 3:
[0062] A low smoke aging resistant crosslinking elastomer, comprising the following components (unit: g):
[0063]
[0064] The preparation method comprises the following steps:
[0065] Step 1: Prepare each raw material according to the weight;
[0066] Step 2: Mix SEBS with softening oil and stir evenly, let stand for 25 hours to obtain a pre-softened elastomer;
[0067] Step 3: The pre-softened elastomer and the remaining components obtained in step 2 are mixed evenly through a high-speed mixer to obtain a mixed material;
[0068] Step 4: Put the mixed material into the twin screw extruder for melt pinching and extrusion, the extrusion temperature is 240 °C, and the screw speed is 500rpm;
[0069] Step 5: The melt output extruded by the extruder die is cooled, and then the low smoke aging resistant crosslinking elastomer and its preparation method are obtained after irradiation crosslinking by ultraviolet irradiation equipment.
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