The invention provides a method for preparing grafted
polypropylene resin, relating to the technology of melt-
grafting maleic anhydride onto
polypropylene resin. In the method, a melt free radical graThe invention provides a method for preparing grafted
polypropylene resin, relating to the technology of melt-
grafting maleic anhydride onto polypropylene resin. In the method, a melt free radical
grafting reaction is adopted to graft a
maleic anhydride monomer onto a molecular chain of the polypropylene resin.
Polypropylene resin adopts
powder without an antioxidizer, wherein an auxiliary monomerfting reaction is adopted to graft a maleic anhydride
monomer onto a molecular chain of the polypropylene resin.
Polypropylene resin adopts
powder without an antioxidizer, wherein an auxiliary
monomer is introduced in a melt grafting reaction triggered by a
peroxide initiator besides the addition of the maleic anhydride monomer. The auxiliary monomer consists of a first auxiliary monomer and a secis introduced in a melt grafting reaction triggered by a
peroxide initiator besides the addition of the maleic anhydride monomer. The auxiliary monomer consists of a first auxiliary monomer and a second auxiliary monomer. The first auxiliary monomer is a
styrene monomer and the second auxiliary monomer is an
organic matter monomer with molecules including two or more carbon-carbon double bonds. Tond auxiliary monomer. The first auxiliary monomer is a
styrene monomer and the second auxiliary monomer is an
organic matter monomer with molecules including two or more carbon-carbon double bonds. The consumption of the auxiliary monomer accounts for 1%wt to 10%wt of the weight of the polypropylene resin and the proportion of the first auxiliary monomer and the second auxiliary monomer in the auhe consumption of the auxiliary monomer accounts for 1%wt to 10%wt of the weight of the polypropylene resin and the proportion of the first auxiliary monomer and the second auxiliary monomer in the auxiliary monomer ranges from 5:95 to 70:30; the consumption of the maleic anhydride accounts for 1%wt to 8%wt of the weight of polypropylene. The method for grafting maleic anhydride onto polypropylenexiliary monomer ranges from 5:95 to 70:30; the consumption of the maleic anhydride accounts for 1%wt to 8%wt of the weight of polypropylene. The method for grafting maleic anhydride onto polypropylene resin can obtain the grafted polypropylene resin with relatively high grafting ratio, molecular weight and
viscosity coefficient.resin can obtain the grafted polypropylene resin with relatively high grafting ratio, molecular weight and
viscosity coefficient.