Polypropylene composition and preparation method thereof

A polypropylene composition and polypropylene technology, applied in the field of polypropylene composition and its preparation, can solve the problems of uncompetitiveness and low cost performance, and achieve the effects of promoting development, low cost and high cost performance

Inactive Publication Date: 2013-01-30
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although its price has been reduced, but its performance is integrated, the price / performance ratio has become even lower, and it is not competitive.

Method used

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  • Polypropylene composition and preparation method thereof
  • Polypropylene composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Add untreated calcium carbonate and 0.1% (mass percentage of calcium carbonate) gamma-aminopropyltriethoxysilane into a high mixer and mix for 10 minutes, then discharge.

[0030] (2) Put 40 parts of new polypropylene material, 29 parts of recycled polypropylene material, 5 parts of calcium carbonate, 5 parts of ethylene-propylene-cyclopentadiene terpolymer (EPDM), 20 parts of recycled ethylene-propylene rubber, 0.5 parts Light stabilizer LS-770, 0.2 parts of antioxidant 1010, 0.3 parts of antioxidant 168, added to the above high mixer and mixed for 5 minutes;

[0031] (3) Put the mixture into the twin-screw extruder from the feeding port, extrude and granulate. The extrusion temperatures were 160°C, 225°C, 235°C, 235°C, and 240°C, respectively. The test performance data are as follows: tensile strength 19.8MPA, elongation at break 491%, flexural strength 22.3MPA, flexural modulus 1168MPA, notched impact strength 81KJ / M 2 .

Embodiment 2

[0033] (1) Add untreated glass powder and 2% (mass percentage of glass powder) of γ-aminopropyltriethoxysilane into a high-mixer and mix for 10 minutes, then discharge.

[0034] (2) 40 parts of new polypropylene material, 14 parts of recycled polypropylene material, 5 parts of ethylene-vinyl acetate copolymer, 5 parts of regenerated butadiene rubber, 35 parts of glass powder, 0.5 part of ethylene bis stearamide, 0.3 Part of light stabilizer 201, 0.1 part of antioxidant 1076, 0.1 part of triphenyl phosphite, added in the above-mentioned high mixer and mixed for 10 minutes;

[0035] (3) Put the mixture into the twin-screw extruder from the feeding port, extrude and granulate. The extrusion temperatures were 160°C, 225°C, 235°C, 235°C, and 240°C, respectively. The test performance data are as follows: tensile strength 28.8MPA, elongation at break 32%, flexural strength 38.1MPA, flexural modulus 1912MPA, notched impact strength 9.2KJ / M 2 .

Embodiment 3

[0037] (1) Add untreated glass microspheres and 1% (mass percentage of glass microspheres) of γ-aminopropyltriethoxysilane into a high mixer and mix for 5 minutes, then discharge.

[0038] (2) 20 parts of new polypropylene material, 49 parts of recycled polypropylene material, 5 parts of chlorinated polyethylene, 10 parts of regenerated butadiene rubber, 15 parts of glass microspheres, 0.3 part of oleic acid amide, 02 parts of light stabilizer 201 , 0.3 parts of antioxidant 1076, 02 parts of antioxidant DSTP, added to the above high mixer and mixed for 10 minutes;

[0039] (3) Put the mixture into the twin-screw extruder from the feeding port, extrude and granulate. The extrusion temperatures were 160°C, 225°C, 235°C, 235°C, and 240°C, respectively. The test performance data are as follows: tensile strength 22.5MPA, elongation at break 174%, flexural strength 31.3MPA, flexural modulus 1380MPA, notched impact strength 49.5KJ / M 2 .

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Abstract

The invention, belonging to the technical field of universal plastics modification, discloses a polypropylene composition and a preparation method thereof. The polypropylene composition disclosed herein comprises the following ingredients: 38.5-95 weight parts of polypropylene, 5-25 weight parts of toughening agent, 0-35 weight parts of inorganic filler, 0-0.5 weight parts of lubricant, 0-0.5 weight parts of light stabilizer, and 0-0.5 weight parts of antioxidant. The preparation method disclosed herein comprises the following steps: adding 38.5-95 weight parts of polypropylene, 5-25 weight parts of toughening agent, 0-35 weight parts of pretreated inorganic filler, 0-0.5 weight parts of lubricant, 0-0.5 weight parts of light stabilizer, and 0-0.5 weight parts of antioxidant in a high mixing machine to mix for 5-10 min; adding the mixture in a double-screw extruder from the charging hole, and granulating. According to the invention, under the condition of keeping excellent comprehensive performances, the polypropylene composition disclosed herein has low production cost, high cost performance, and strong competitive power on the market, and can be widely applied in the material fields of auto-inner ornaments, door sheets, bumpers, liners and shells of household appliances, etc.

Description

technical field [0001] The invention belongs to the technical field of general plastic modification, and relates to a polypropylene composition and a preparation method thereof. Background technique [0002] Polypropylene plastic is a kind of general-purpose plastic. Due to its rich source of raw materials and excellent comprehensive performance, it is widely used in automobiles, home appliances, furniture, construction, railways and other fields. However, polypropylene is a relatively brittle material with high molding shrinkage and low notched impact strength, so its application in high-impact products is greatly limited. The toughening modification of polypropylene includes blending and copolymerization modification. Among them, the most common modification method is blending modification. Mainly including rubber, thermoplastic elastomer toughening, inorganic rigid particles toughening, inorganic nanoparticles toughening. The toughening effect of rubber and thermoplast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/06C08K9/06B29B9/06
Inventor 李万里
Owner HEFEI GENIUS NEW MATERIALS
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