Polypropylene resin composite
A technology of polypropylene resin and composition, applied in the field of polypropylene resin composition, can solve the problems of flow marks, prolong the molding cycle, increase the production cost, etc., and achieve the effect of good performance
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[0046] Example 1
[0047] Mix 68kg polypropylene, 20kg calcium carbonate, 0.3kg 2-tert-butyl-4-methoxyphenol, 0.2kg 4-hydroxy-2,2,6,6-tetramethylpiperidine and 0.3kg calcium stearate Mix in the machine for 2 minutes, the speed of the mixer is 350 rpm; then add 12kg POE and 0.2kg of acrylate-maleic acid-ethylene terpolymer to it and continue to mix for 1.5 minutes, the speed of the mixer is 500 rpm Minutes, then transfer the material to a twin-screw extruder, melt and knead at 200°C, and obtain a polypropylene resin composition after extrusion. Wherein, the MFR of the polypropylene is 10g / 10min, and the Izod notched impact strength is 15kJ / m 2 .
[0048] The polypropylene resin composition was dried at 80°C for 2 hours, and then a standard sample was obtained after injection molding by an injection machine. The molding process parameters are as follows:
[0049] Material temperature: 230°C in one stage, 230°C in second stage, 230°C in third stage, 220°C in fourth stage, 210°C in fif...
Example Embodiment
[0061] Example 2
[0062] Combine 68kg polypropylene, 10kg calcium carbonate, 10kg talc, 0.4kg tris(2-isobutylphenyl) phosphite, 0.2kg 2-(2'-hydroxy-5'-methylphenyl) benzotriazole Mix with 0.3kg titanate in the mixer for 2 minutes, the rotation speed of the mixer is 350 rpm; then add 12kg POE and 0.2kg 1,2-epoxy-5-hexene-butadiene copolymer to it and continue mixing 1.5min, the rotating speed of the mixer is 600 rpm, and then the material is transferred to the twin-screw extruder, melted and kneaded at 200°C, and the polypropylene resin composition is obtained after extrusion. Wherein, the MFR of the polypropylene is 15g / 10min, and the Izod notched impact strength is 20kJ / m 2 .
[0063] The polypropylene resin composition was dried at 80°C for 2 hours, and the standard sample was obtained after injection molding according to the process parameters provided in Example 1. The appearance of the standard sample was observed. The results are shown in Table 1. 1 is the appearance obser...
Example Embodiment
[0065] Example 3
[0066] 61kg polypropylene, 15kg calcium carbonate, 10kg talc, 0.3kg octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, 0.2kg 2-(2′-hydroxy -5'-Methylphenyl) benzotriazole and 0.3kg aluminate are mixed in the mixer for 2min, the speed of the mixer is 350 revolutions / min; then 14kg SEBS and 0.2kg acrylate-transbutene are added to it The diacid-ethylene terpolymer was mixed for 1.5 minutes, the speed of the mixer was 600 rpm, and then the material was transferred to the twin-screw extruder, melted and mixed at 200 ℃, and the polypropylene resin composition was obtained after extrusion Things. Wherein, the MFR of the polypropylene is 20g / 10min, and the Izod notched impact strength is 18kJ / m 2 .
[0067] The polypropylene resin composition was dried at 80°C for 2 hours, and the standard sample was obtained after injection molding according to the process parameters provided in Example 1. The appearance of the standard sample was observed. The results are sh...
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