A flame-retardant and impact-resistant polypropylene composite material and its preparation method
A composite material and polypropylene technology, which is applied in the field of flame-retardant and impact-resistant polypropylene composite materials and their preparation, can solve the problems of poor interfacial strength of composite materials, decreased impact toughness, poor tensile properties, etc. The effect of improving the tensile modulus at low temperature without decreasing the tensile strength
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Embodiment 1
[0025]
[0026] Wherein, the sum of the parts by weight of polypropylene and EPDM-g-MASi is 100, and nano silicon dioxide is selected for preparing EPDM-g-MASi.
[0027] (1) In a fume hood, weigh a certain amount of EPDM-g-MAH and dissolve it in xylene, put it in an oil bath, set the reaction temperature to 60°C, and under nitrogen protection, stir at a medium speed for 30 minutes to reach EPDM-g-MAH completely dissolved. It is also called (EPDM-g-MAH: nano-silica = 10:1) Weigh a certain amount of nano-silica, dissolve it in xylene, and slowly add it to the completely dissolved EPDM- In the g-MAH xylene solution, continue to stir for 1 hour, lower the temperature of the oil bath to 40°C, and slowly add a sufficient amount of acetone dropwise until the mixed product is completely precipitated. After the above mixed product is naturally cooled in a fume hood, the mixed product Suction filtration was performed, and the finally obtained precipitate was vacuum-dried at room tem...
Embodiment 2
[0032]
[0033]
[0034] Wherein, the sum of the parts by weight of polypropylene and EPDM-g-MAZn is 100, and nanometer zinc oxide is selected when preparing EPDM-g-MAZn.
[0035] (1) In a fume hood, weigh a certain amount of EPDM-g-MAH and dissolve it in xylene, put it in an oil bath, set the reaction temperature to 100°C, under nitrogen protection, stir at a medium speed for 30 minutes to reach EPDM-g-MAH completely dissolved. Also known as (EPDM-g-MAH: nano-zinc oxide = 10:1 mass ratio, weigh a certain amount of nano-zinc oxide, dissolve it in xylene, and slowly add it to the completely dissolved EPDM-g-MAH under high-speed stirring. In the MAH xylene solution, continue stirring for 0.5h, lower the temperature of the oil bath to 60°C, and slowly add a sufficient amount of acetone dropwise until the mixed product is completely precipitated. After the above mixed product is naturally cooled in a fume hood, the mixed product is Suction filtration, and vacuum-dry the fin...
Embodiment 3
[0040]
[0041] Wherein, the sum of the parts by weight of polypropylene and EPDM-g-MACa is 100, and nanometer calcium oxide is selected when preparing EPDM-g-MACa.
[0042](1) In a fume hood, weigh a certain amount of EPDM-g-MAH and dissolve it in xylene, put it in an oil bath, set the reaction temperature to 80°C, and under nitrogen protection, stir at a medium speed for 30 minutes to reach EPDM-g-MAH completely dissolved. Another name is to weigh a certain amount of nano-calcium oxide according to the mass ratio of (EPDM-g-MAH: nano-calcium oxide = 10:1), dissolve it in xylene, and slowly add it to the completely dissolved EPDM-g-MAH under high-speed stirring -MAH xylene solution, after continuing to stir for 1.5 h, lower the temperature of the oil bath to 50° C., and slowly add a sufficient amount of acetone dropwise until the mixed product is completely precipitated. After the above mixed product was naturally cooled in a fume hood, the mixed product was suction-filte...
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