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Rare earth modified master batch for polypropylene and preparation method thereof
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A rare earth modification and polypropylene technology is applied in the field of polypropylene modifiers to achieve the effects of improving compatibility, increasing notched impact strength and thermal deformation temperature under load, and simple preparation process
Pending Publication Date: 2020-01-31
SHIYAN SENXIN AUTOMOTIVE COMPONENTS CO LTD
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[0007] In order to solve the above technical problems, the present invention provides a rare earth modified masterbatch for polypropylene and its preparation method to solve the problem of compatibility between rare earth oxides and polypropylene resin
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Embodiment 1
[0019] The invention provides a rare earth modified masterbatch for polypropylene and a preparation method thereof, comprising the following steps:
[0020] 1), prepare the following formulation raw materials by weight percentage: lanthanum oxide 1%, polypropylene resin SP17989%, maleic anhydride grafted polypropylene 10%;
[0021] 2), add lanthanum oxide, polypropylene resin SP179 and maleic anhydride grafted polypropylene in step 1) into the high-speed mixer according to the weight percentage, and mix at 85°C at a speed of 300r / min, and finally pass The twin-screw extruder directly extrudes and granulates.
Embodiment 2
[0023] The invention provides a rare earth modified masterbatch for polypropylene and a preparation method thereof, comprising the following steps:
[0024] 1), prepare the following formula raw materials by weight percentage: lanthanum oxide 5%, polypropylene resin SP17980%, maleic anhydride grafted polypropylene 15%;
[0025] 2), add lanthanum oxide, polypropylene resin SP179 and maleic anhydride grafted polypropylene in step 1) into the high-speed mixer according to the weight percentage, and mix at 90°C at a speed of 200r / min, and finally pass The twin-screw extruder directly extrudes and granulates.
Embodiment 3
[0027] The invention provides a rare earth modified masterbatch for polypropylene and a preparation method thereof, comprising the following steps:
[0028] 1), prepare the following formula raw materials by weight percentage: lanthanum oxide 10%, polypropylene resin SP17975%, maleic anhydride grafted polypropylene 15%;
[0029] 2), add lanthanum oxide, polypropylene resin SP179 and maleic anhydride grafted polypropylene in step 1) into the high-speed mixer according to the weight percentage, and mix at 80°C at a speed of 300r / min, and finally pass The twin-screw extruder directly extrudes and granulates.
[0030] The specific usage and function of this embodiment:
[0031] 1. After mixing the rare earth modified masterbatch and polypropylene resin SP179 prepared in the second embodiment of Example 1-3 in a weight ratio of 5:95, extrude through a twin-screw extruder, cool, and air-dry to shear and granulate. The comparative results of the main mechanical property tests of th...
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Abstract
The invention provides a rare earth modified master batch for polypropylene and a preparation method of the rare earth modified master batch. The rare earth modified master batch is prepared from thefollowing formula raw materials in percentage by weight: 1-10% of lanthanumoxide, 75-95% of polypropylene resin and 4-15% of maleic anhydride grafted polypropylene. The rare earth modified master batch for polypropylene is prepared by compounding and blending rare earth oxide, polypropylene resin and maleic anhydride grafted polypropylene instead of complex rare earth heterocyclic rings, condensed rings and carboxylate organic compounds; the compatibility of the lanthanumoxide and polypropylene resin is improved by grafting polypropylene with maleic anhydride, so that the compatibility of the rare earth oxide and polypropylene resin is improved. The rare earth modified master batch obtained by the invention has an obvious modification effect, and can effectively improve the IZOD notch impact strength and load thermal deformation temperature of the block copolymer polypropylene material. The concentrated master batch finished product can be directly obtained without complex combination reaction in the preparation of the rare earth modified master batch, and the method has the advantages of simple preparation process and low cost.
Description
technical field [0001] The invention belongs to the technical field of polypropylene modifiers, and more specifically relates to a rare earth modified masterbatch for polypropylene and a preparation method thereof. Background technique [0002] Polypropylene has a variety of crystal forms, mainly including α, β, γ, δ and pseudo-hexagonal crystal. Among them, the α crystal form is the main one, accounting for more than 80% under normal conditions. Its material characteristics are rigid, but its toughness and heat resistance are poor; compared with the α crystal form polypropylene, the β crystal form polypropylene has room temperature and low temperature impact strength. Better, high heatdistortion temperature, high toughness and ductility under high-speed stretching, not easy to be brittle, but under normal conditions, the β crystal form is not easy to form, and special methods need to be used to promote the nucleation of the β crystal form. [0003] The formation of β-crys...
Claims
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Application Information
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