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A technology of rubber and thermoplastic vulcanization, which is applied in the field of TPV and can solve problems such as the gap in overall performance distribution
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Embodiment 1
[0264] In this example, 100 g of EPDM was dissolved in 1500 mL of toluene to prepare a stock solution of EPDM. Into the autoclave reactor (0.5L) was added 300mL of the above EPDM solution, 10g of isotactic polypropylene, 0.4g of zinc oxide (ZnO) and 0.4g of stannous chloride (SnCl 2 ). The reactor was purged with nitrogen and pressurized with 0.55 MPa (approximately 80 psi) nitrogen. The reactor was heated to 180°C with stirring. After 5 minutes at 180°C, a toluene solution of 2.5 g of phenolic resin in 10 mL of toluene was injected into the reactor. The reactor temperature was raised to 200°C and the reaction was continued at 200°C for 15 minutes. After 15 minutes, the reactor was cooled to ambient temperature and vented. The resulting polymer was precipitated by adding 500 mL of isopropanol, washed with 200 mL of isopropanol, and dried in a vacuum oven at 60°C for 16 hours.
Embodiment 2
[0266]In this example, 100 g of EPDM was dissolved in 1500 mL of hexane to prepare a stock solution of EPDM. Into an autoclave reactor (0.5 L) was added 300 mL of the above EPDM solution, 15 g isotactic polypropylene, 0.4 g zinc oxide (ZnO) and 0.5 g stannous chloride dihydrate (SnCl 2 ·2H 2 O). The reactor was purged with nitrogen and pressurized with 0.55 MPa (approximately 80 psi) nitrogen. The reactor was heated to 180°C with stirring. After 5 minutes at 180°C, a toluene solution of 2.5 g of phenolic resin in 7.5 mL of hexane was injected into the reactor. The reactor temperature was raised to 200°C and the reaction was continued at 200°C for 20 minutes. After 20 minutes, the reactor was cooled to ambient temperature and vented. The resulting polymer was precipitated by adding 500 mL of isopropanol, washed with 200 mL of isopropanol, and dried in a vacuum oven at 80°C for 16 hours.
Embodiment 3
[0268] In this example, 100 g of EPDM was dissolved in 1500 mL of hexane to prepare a stock solution of EPDM. Into an autoclave reactor (0.5 L) was added 300 mL of the above EPDM solution, 15 g isotactic polypropylene, 0.4 g zinc oxide (ZnO) and 0.5 g stannous chloride dihydrate (SnCl 2 ·2H 2 O). The reactor was purged with nitrogen and pressurized with 0.55 MPa (approximately 80 psi) nitrogen. The reactor was heated to 180°C with stirring. After 5 minutes at 180°C, a toluene solution of 4.0 g of phenolic resin in 6.0 mL of hexane was injected into the reactor, and the reaction was continued at 180°C for 15 minutes. After 15 minutes, the reactor was cooled to ambient temperature and vented. The resulting polymer was precipitated by adding 500 mL of isopropanol, washed with 200 mL of isopropanol, and dried in a vacuum oven at 60°C for 16 hours.
[0269] Samples 1A, 2A & 3A, respectively, were obtained by homogenizing the samples of Examples 1-3 by melt mixing 43 g on a Bra...
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