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Polypropylene compound, its preparation method and its application

A technology of polypropylene and composites, which is applied in the field of polypropylene composites, can solve the problems of decreased toughness of materials, decreased toughness of polypropylene, large polarity difference, etc., and achieves high toughness, no reduction in rigidity, and small particle size.

Active Publication Date: 2015-12-16
TIANJIN KINGFA NEW MATERIAL +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Blending polypropylene with rubber-like elastomers can effectively improve the toughness of the material, but usually the strength, modulus and heat resistance of the material will be greatly reduced
The use of fillers to fill polypropylene can significantly improve the rigidity, hardness, heat distortion temperature, etc. of the material, but usually causes the toughness of the material to decrease
The decrease in the toughness of filler-filled polypropylene is mainly due to the large polarity difference between the filler and the polypropylene matrix and the weak interfacial bonding force, which leads to the decrease in the toughness of polypropylene.

Method used

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  • Polypropylene compound, its preparation method and its application
  • Polypropylene compound, its preparation method and its application
  • Polypropylene compound, its preparation method and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0062] Homopolypropylene with a melt index of 10g / 10min, linear low-density polyethylene with a melt index of 10g / 10min, polyolefin elastomer with a melt index of 10g / 10min, inorganic fillers with a particle size of 100nm-10μm, antioxidant The weight parts of each embodiment components such as agent 1010 and processing aid zinc stearate etc. are mixed by the ratio shown in table 1, join in the extrusion of twin-screw extruder, the temperature setting of extruder is 230 ℃, with a rotation speed of 50 rpm, stirring, extruding after reaction, cooling, and cutting into pellets to obtain polypropylene composites. The polyolefin elastomer described in Examples 1-5 can be an ethylene-butylene copolymer, and the inorganic filler includes at least one of talcum powder, calcium carbonate, mica, wollastonite, and barium sulfate. Refer to Table 1 for the particle size of the inorganic filler in the components of each of the above examples, and its performance parameters are shown in Table...

Embodiment 6-10

[0072] Mix the components of copolymerized polypropylene, polyethylene, polyolefin elastomer, inorganic filler with a particle size between 100-200nm, antioxidant 1010 and processing aid zinc stearate, etc., and then add them to the twin-screw extruder Extruded in the extruder, the temperature of the extruder was set at 210°C, the rotating speed was 300 rpm, stirred, extruded after reaction, then cooled, and pelletized to obtain a polypropylene compound. The parts by weight of the components are shown in Table 3. The melt indices of the above-mentioned copolymerized polypropylene, polyethylene, and polyolefin elastomers and the particle diameters of the inorganic fillers are shown in Table 3. The performance parameters of polypropylene composites are shown in Table 3. The polyolefin elastomer described in Examples 6-10 may be an ethylene butene copolymer. The polyethylene may be a mixture of low density polyethylene and high density polyethylene. The inorganic filler includ...

Embodiment 11-15

[0077] After mixing homopolypropylene, low density polyethylene, polyolefin elastomer, inorganic filler with a particle size between 0.5-0.8 μm, antioxidant 1010 and processing aid zinc stearate, add it to Extruded in a twin-screw extruder, the temperature of the extruder was set at 190°C, the rotating speed was 400 rpm, stirred, reacted, extruded, then cooled, and pelletized to obtain a polypropylene compound. The parts by weight of the components are shown in Table 3, and the melt indices of the above-mentioned copolymerized polypropylene, polyethylene, and polyolefin elastomers are all 10 g / 10 min, and the particle diameters of the inorganic fillers are shown in Table 4. The performance parameters of polypropylene composites are shown in Table 4. The polyolefin elastomer in Examples 11-15 may be a mixture of both ethylene octene copolymer and ethylene butene copolymer.

[0078] Table 4

[0079]

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Abstract

The invention discloses a polypropylene composition, and a preparation method and an application thereof. The polypropylene composition comprises the following components: polypropylene, polyethylene, polyolefin elastomer, inorganic filler, an antioxidant and processing agent powder. The preparation method comprises the following steps of: uniformly mixing the components and adding the mixture to a screw extruder; and carrying out melt-blending reaction to the mixture in the reactor and extruding and granulating the mixture to obtain the polypropylene composition. Under the action of polyethylene, polyolefin elastomer and inorganic filler, the polypropylene composition has high toughness and no reduced rigidity.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polypropylene compound, its preparation method and its application. Background technique [0002] Polypropylene is one of the five general-purpose plastics and has been widely used in chemical industry, construction, light industry, automobile, home appliance, packaging and other fields. However, with the development of the industry, the requirements for material properties are getting higher and higher. Ordinary polypropylene must be modified to give it high performance in order to meet the needs. [0003] Through the new processing method and the blending modification of polypropylene, the high performance of polypropylene can be realized. Blending polypropylene with rubber-like elastomers can effectively improve the toughness of the material, but usually the strength, modulus and heat resistance of the material will be greatly reduced. The use of fillers to fill ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/14C08L23/06C08L23/08C08K13/02C08K3/34C08K3/26C08K3/30C08K3/22C08K3/04
Inventor 杨磊陶四平王爱东杨霄云于海鸥李其龙肖鹏
Owner TIANJIN KINGFA NEW MATERIAL
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