Thermoplastic vulcanized elastomer composition and its preparation method and use
A thermoplastic elastomer and thermoplastic vulcanization technology, which is applied in the field of thermoplastic vulcanized elastomer composition and its preparation, can solve the problems of thermoplastic elastomer filled particles such as low resilience, low strength, and difficulty in recycling, and achieve reduced hydrophilicity and good strength Good effect with elasticity and reproducible processability
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[0030] What following each example provides is the preparation method of thermoplastic vulcanized elastomer composition, comprises the following steps:
[0031] (1) adding paraffin oil to part of the thermoplastic elastomer, mixing evenly, and keeping warm to obtain an oil-extended thermoplastic elastomer;
[0032] (2) uniformly mixing the oil-extended thermoplastic elastomer with the rest of the thermoplastic elastomer, thermoplastic, cross-linking system, filler, and auxiliary agent to obtain a mixed material;
[0033] (3) Extrude the mixed material in an extruder for dynamic vulcanization to obtain the thermoplastic vulcanized elastomer composition. The preparation method also includes the step of preparing the thermoplastic vulcanized elastomer composition into pellets.
[0034] In this preparation method, the method of uniform mixing is 1000-1500rpm stirring, the condition of heat preservation is 40-75°C, 8-36h, the temperature of the extruder is 160-230°C, and the screw...
Embodiment 1
[0039] This example provides a thermoplastic vulcanized elastomer composition and a preparation method thereof. The types of raw materials and the parts by weight of each raw material of the thermoplastic vulcanized elastomer composition are shown in Table 1. The preparation steps are as follows:
[0040] Add 62 parts of paraffin oil to 26.6 parts of SEBS (thermoplastic elastomer), stir to disperse evenly, and then keep it warm at 50°C for 12 hours to fully fill it with oil to obtain oil-filled SEBS;
[0041] Oil-extended SEBS (thermoplastic elastomer), 8.8 parts of POE (thermoplastic elastomer), 9.1 parts of HIPS (thermoplastic), 1.5 parts of vinyl tri-tert-butylperoxysilane (crosslinking agent), 1.5 parts of vinyl triethyl Add oxysilane (assisting crosslinking agent), 70.8 parts of talc powder (filler), 27.6 parts of heavy calcium carbonate (filler), and 3 parts of commonly used fillers into a high-speed mixer, and mix evenly to obtain a mixed material;
[0042] Adding the m...
Embodiment 2
[0046] This example provides a thermoplastic vulcanized elastomer composition and a preparation method thereof. The types of raw materials and the parts by weight of each raw material of the thermoplastic vulcanized elastomer composition are shown in Table 1. The preparation steps are as follows:
[0047] Add 50 parts of paraffin oil to 9.4 parts of SEBS (thermoplastic elastomer), stir at high speed to disperse evenly, and then keep it warm at 50°C for 12 hours to fully fill it with oil to obtain oil-extended SEBS;
[0048]Oil-extended SEBS (thermoplastic elastomer), 18.7 parts of POE (thermoplastic elastomer), 6.4 parts of PS (thermoplastic), 1.7 parts of methyl tri-tert-butylperoxysilane (crosslinking agent), 1.8 parts of vinyl tri( β-methoxyethoxy) silane (assisting cross-linking agent), 41.6 parts of white carbon black (filler), 53.2 parts of heavy calcium carbonate (filler), and 2.6 parts of commonly used pigments are added to a high-speed mixer, and stirred at a high spee...
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