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Fibrilia-reinforced polypropylene as well as preparation method thereof

A hemp fiber and polypropylene technology, which is applied in the field of hemp fiber reinforced polypropylene and its preparation, can solve the problems of poor polymer fluidity and uneven mixing, etc.

Inactive Publication Date: 2014-01-22
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a hemp fiber-reinforced polypropylene and a preparation method thereof in order to overcome the above-mentioned defects in the prior art. Good, the preparation method of the hemp fiber reinforced polypropylene of the present invention can maintain a high aspect ratio of the fiber, and at the same time solve the problems of poor polymer fluidity and uneven mixing when the filling is high

Method used

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  • Fibrilia-reinforced polypropylene as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 100 parts of PP of BJ368MO, 2 parts of antioxidant 1010, 2 parts of antioxidant 168, and 2 parts of lubricant TR044, and mix them in a high-speed mixer for 3 minutes. Extrude pellets in a screw extruder.

[0031] The temperature of the extruder is set as: Zone I 160°C, Zone II 170°C, Zone III 175°C, Zone IV 180°C, Zone V 190°C, Zone VI 200°C, Head 205°C. After the material is extruded, it is cooled by water, Pelletize, dry the pellets at 100°C for 3 hours, make a sample by an injection molding machine, and perform a mechanical performance test. The performance test results are shown in Table 2.

Embodiment 2

[0033] Weigh 100 parts of PP of BJ368MO, extrude and granulate together with 10 parts of ramie fiber in a twin-screw extruder.

[0034] The extruder temperature setting is: 160°C in zone I, 170°C in zone II, 175°C in zone III, 180°C in zone IV, 190°C in zone V, 200°C in zone VI, and 205°C at the head. Pelletize, dry the pellets at 100°C for 3 hours, make a sample by an injection molding machine, and perform a mechanical performance test. The performance test results are shown in Table 2.

Embodiment 3

[0036] Weigh 100 parts of PP of BJ368MO, 2 parts of antioxidant 1010, 2 parts of antioxidant 168, and 2 parts of lubricant TR044, and mix them in a high-speed mixer for 3 minutes. Extrude pellets in a screw extruder.

[0037] The temperature setting of the extruder is: 160°C in zone I, 170°C in zone II, 175°C in zone III, 180°C in zone IV, 190°C in zone V, 00°C in zone VI2, and 205°C at the head. After the material is extruded, it is cooled by water, Pelletize, dry the pellets at 100°C for 3 hours, make a sample by an injection molding machine, and perform a mechanical performance test. The performance test results are shown in Table 2.

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Abstract

The invention relates to fibrilia-reinforced polypropylene which is prepared from the following components in parts by weight: 100 parts of polypropylene, 10-150 parts of fibrilia and 0-50 parts of an assistant. A preparation method of fibrilia-reinforced polypropylene comprises the following steps: adding weighed100 parts of polypropylene and 0-50 parts of assistant into a twin-screw extruder; mixing, extruding and granulating with 10-150 parts of fibrilia at 160-205 DEG C to prepare fibrilia-reinforced polypropylene. Compared with the prior art, the preparation method has the advantages that the melt index of polypropylene adopted by the preparation method is greater than or equal to 80, and the number of fibrilia is greater than or equal to 6; on one hand, the excellent flowing property of polypropylene can be ensued; on the other hand, fibrilia is fine enough, and easy to cut and disperse; the processing temperature of fibrilia-reinforced polypropylene provided by the invention is controlled within 160-205 DEG C, and the rotational speed of a main machine is greater than or equal to 100r / m, so that the original performance of fibrilia can be better maintained, and the fibrilia better achieves the reinforcing effect.

Description

technical field [0001] The invention belongs to the technical field of modified polypropylene, and in particular relates to a hemp fiber reinforced polypropylene and a preparation method thereof. Background technique [0002] Polypropylene is one of the five general-purpose plastics and is widely used all over the world. It is a thermoplastic with good performance and low price. Chinese patent CN101580640B discloses a method of preparing wood-plastic composite materials by blending heat-treated plant fibers and plastics. In this method, the plant fibers are pulverized and modified, and then heat-treated under anoxic conditions to react with plastics and other additives. It is found that the compatibility between plant fibers and plastics is better improved, but because the length-to-diameter ratio of plant fibers after crushing is greatly reduced, it cannot play a role in strengthening plastics. Chinese patents CN101967294B and CN101955624B pulverize plant fibers into powde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/10C08L97/02C08L51/06B29B9/06
CPCC08L23/12C08K2201/004C08L97/02C08L2205/06C08L2205/16
Inventor 杨桂生程伟孙利明赵冬云
Owner HEFEI GENIUS NEW MATERIALS
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