Preparation method of polypropylene composition
A technology of polypropylene composition and heterogeneous polypropylene, which is applied in the field of preparation of polypropylene composition, to achieve the effects of improving aging resistance, excellent toughness, and improving scratch resistance
Active Publication Date: 2017-06-30
NINGBO CONMPX ELECTRICAL INDAL
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
In the field of automobile manufacturing, modified polypropylene series materials are a new type of material with very high cost performance, which improves the comprehensive physical properties of basic polypropylene resin, creep resistance, dimensional stability, high toughness, high rigidity, Excellent heat resistance, aging resistance, good low temperature resistance and high impact strength, but the modified polypropylene used in automobile manufacturing still has good toughness, rigidity and impact resistance, and needs to be improved Its scratch resistance requirements
Method used
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Embodiment 1
[0032] After weighing each component in proportion (see Table 1), mix and stir the talcum powder and the coupling agent at a speed of 1000 rpm for 15 minutes, and then stay in the high-speed mixer for use;
[0033] (b) Add the remaining components to the mixed material in step (a), stir at a low speed of 250 rpm, and blend for 35 minutes;
[0034] (c) Add the mixed materials in step (b) into a twin-screw extruder, set a suitable temperature and rotation speed, make the materials extrude in a molten state, and granulate through cold water stranding.
[0035] Among them, the set temperature of the twin-screw extruder is: head 195°C; zone 9 215°C; zone 8 225; zone 7 225°C; zone 6 230°C; zone 5 225°C; zone 4 220°C; zone 3 215 ℃; zone 2 210℃; zone 1 195℃, speed: 600 rpm; frequency: 35Hz.
[0036] The above-mentioned polypropylene composition particles were heated and melted to make samples for performance testing, and their properties are shown in Table 1.
[0037] The preparatio...
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Abstract
The invention discloses a polypropylene composition which is characterized by being composed of the following components in parts by weight: 80-85 parts of PP-1, 10-15 parts of PP-2, 5-10 parts of maleic anhydride grafted polypropylene, 10-15 parts of an ethylene-propylene copolymer, 10-15 parts of an ethylene-octene copolymer, 10-20 parts of HDPE, 40-50 parts of talc powder, 0.1-1 part of a coupling agent, 0.5-1.0 part of an antioxidant, 0.1-0.3 part of an anti-ultraviolet agent and 1-3 parts of pigments, wherein PP-1 is heterogeneous polypropylene, and the melt flow rate MFR2(230 DEG C, 2.16kg) is not smaller than 100g / 10min, and is determined according to ISO 1133; the PP-2 is a crystallized propene homopolymers, and the melt flow rate MFR2(230 DEG C, 2.16kg) is not smaller than 15g / 10min, and is determined according to ISO 1133; and the melt flow rate MFR2 of HDPE (190 DEG C, 2.16kg) is in a range of 5-8g / 10min, and is determined according to ISOA 1133. The invention also discloses a preparation method of the polypropylene composition.
Description
technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a preparation method of a polypropylene composition. Background technique [0002] Polypropylene is one of the five general-purpose resins. It has excellent properties such as light weight, easy processing, and strong chemical resistance. It has been widely used in industrial fields such as chemical industry, electrical appliances, automobile manufacturing, and packaging. In the field of automobile manufacturing, modified polypropylene series materials are a new type of material with very high cost performance, which improves the comprehensive physical properties of basic polypropylene resin, creep resistance, dimensional stability, high toughness, high rigidity, Excellent heat resistance, aging resistance, good low temperature resistance and high impact strength, but the modified polypropylene used in automobile manufacturing still has good toughness, rigid...
Claims
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IPC IPC(8): C08L23/12C08L51/06C08L23/08C08L23/16C08L23/06C08K3/34C08K5/134C08K5/526C08K5/13C08K5/54C08K3/04
CPCC08L23/12C08L2201/08C08L2205/02C08L2205/025C08L2205/035C08L2207/062C08L51/06C08L23/0815C08L23/16C08L23/06C08K3/34C08K5/1345C08K5/526C08K5/13C08K5/54C08K3/04
Inventor 吴杰
Owner NINGBO CONMPX ELECTRICAL INDAL