Polybutene alloy material and preparation method thereof
A technology of polybutene alloy and butene, which is applied in the field of new polyolefin materials, can solve the problems of poor mechanical properties of polypropylene, unsatisfactory pressure resistance, and large molding shrinkage, and achieve excellent impact resistance and good hydrogen sensitivity. Sex, low shrinkage effect
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Embodiment 1
[0054] 1L fully-sealed magnetic stirring stainless steel pressure polymerization kettle, pumped out and replaced with high-purity nitrogen several times, then metered and added triethylaluminum (Al) and external electron donor diphenyldimethoxysilane (Si ) and supported titanium catalyst (Ti) 0.25g, add propylene 0.05Kg, wherein Al / Ti=50 (molar ratio), Al / Si=10 (molar ratio). Stir and polymerize at 60°C for 20 minutes, then cool down and empty the propylene, add 0.2Kg of 1-butene into the reactor, react at 30°C for 6h, and obtain 141g of powdered polymer polybutene alloy directly after drying.
[0055] The properties of the polybutene alloy are shown in Table 1.
Embodiment 2
[0057] 1L fully-sealed magnetic stirring stainless steel pressure polymerization kettle, pumped and replaced with high-purity nitrogen for several times, then metered 100ml of hexane, triethylaluminum (Al), and external electron donor cyclohexyltrimethoxysilane into the reaction kettle in sequence And support titanium catalyst (Ti) 0.25g, add propylene 0.05Kg, wherein Al / Ti=80 (molar ratio), Al / Si=20 (molar ratio). Stir and polymerize at 70°C for 20 minutes, then cool down and empty the propylene, add 0.2Kg of 1-butene into the reactor, react at 35°C for 8 hours, and obtain 172g of powdered polymer polybutene alloy directly after drying.
[0058] The properties of the polybutene alloy are shown in Table 1.
Embodiment 3
[0060] 10L full-sealed magnetic stirring stainless steel pressure polymerization kettle, pumped and replaced with high-purity nitrogen several times, then metered and added 150ml of heptane, triethylaluminum (Al), and external electron donor diphenyl dimethoxy Base silane (silicon Si compound) and supported titanium catalyst (Ti) 1.0g, add propylene 0.5Kg, wherein Al / Ti=50 (molar ratio), Al / Si=20 (molar ratio). Stir and polymerize at 60°C for 0.5hr, then cool down and empty the propylene and solvent heptane, add 4.0Kg of 1-butene to the reaction kettle, react at 40°C for 6h, and directly obtain 3.3Kg of powdered polymer polybutene alloy after drying . The properties of the polybutene alloy are shown in Table 1. Polybutene alloys can replace part of polyethylene and polypropylene for the production of pipes and fittings or as general polyolefin materials.
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