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Low-odor high-performance long glass fiber reinforced polypropylene composite and preparation method thereof

A composite material and polypropylene technology, applied in the field of polypropylene materials, can solve problems such as application field limitations, irritating odor, strong irritating odor, etc.

Inactive Publication Date: 2019-04-26
CHONGQNG PRET NEW MATERIAL +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Finally, some additives added to the modified polypropylene material, including various stabilizers and grafts, will also have a certain irritating odor
[0004] The existing glass fiber reinforced polypropylene material and its preparation method are directly adding glass fiber to the polypropylene material. For example, Chinese patent 201610737827X discloses a long glass fiber reinforced polypropylene compound, which is realized in the process of processing. The method of grafting non-toxic monomers to polypropylene molecular chains, but the strong pungent odor produced by the direct method of adding grafted monomers for the preparation of glass fiber reinforced polypropylene composites also limits the application field

Method used

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  • Low-odor high-performance long glass fiber reinforced polypropylene composite and preparation method thereof
  • Low-odor high-performance long glass fiber reinforced polypropylene composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Mix polypropylene, compatibilizer and other additives in proportion at high speed.

[0022] (2) Mix the materials in step (1) evenly and enter the twin-screw extruder, and then enter the melt impregnation die head. The processing temperature is 200-250°C, and the speed of the main machine is 300-500rpm. A vacuum pumping system is added during the extrusion process.

[0023] (3) Preheat and dry the continuous long glass fiber for 2-4 hours to make the temperature 90-100°C, and pre-disperse the glass fiber through the tension frame.

[0024] (4) Multi-strand long glass fiber yarns are respectively drawn out from the bobbins and introduced into the melt-dipping die head respectively.

[0025] (5) The dipping die head is equipped with an ultrasonic dispersing device, and a fixed frequency ultrasonic wave is applied to the mold box, which is covered and impregnated by the molten modified polypropylene resin melt. The processing temperature is 230-300°C, and the pulling ...

Embodiment 2

[0027] (1) Mix polypropylene, compatibilizer and other additives in proportion at high speed.

[0028] (2) Mix the materials in step (1) evenly and enter the twin-screw extruder, and then enter the melt impregnation die head. The processing temperature is 200-250°C, and the speed of the main machine is 300-500rpm. A vacuum pumping system is added during the extrusion process.

[0029] (3) Preheat and dry the continuous long glass fiber for 2-4 hours to make the temperature 90-100°C, and pre-disperse the glass fiber through the tension frame.

[0030] (4) Multi-strand long glass fiber yarns are respectively drawn out from the bobbins and introduced into the melt-dipping die head respectively.

[0031] (5) The dipping die head is equipped with an ultrasonic dispersing device, and a fixed frequency ultrasonic wave is applied to the mold box, which is covered and impregnated by the molten modified polypropylene resin melt. The processing temperature is 230-300°C, and the pulling ...

Embodiment 3

[0033] (1) Mix polypropylene, compatibilizer and other additives in proportion at high speed.

[0034] (2) Mix the materials in step (1) evenly and enter the twin-screw extruder, and then enter the melt impregnation die head. The processing temperature is 200-250°C, and the speed of the main machine is 300-500rpm. A vacuum pumping system is added during the extrusion process.

[0035] (3) Preheat and dry the continuous long glass fiber for 2-4 hours to make the temperature 90-100°C, and pre-disperse the glass fiber through the tension frame.

[0036] (4) Multi-strand long glass fiber yarns are respectively drawn out from the bobbins and introduced into the melt-dipping die head respectively.

[0037] (5) The dipping die head is equipped with an ultrasonic dispersing device, and a fixed frequency ultrasonic wave is applied to the mold box, which is covered and impregnated by the molten modified polypropylene resin melt. The processing temperature is 230-300°C, and the pulling ...

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Abstract

The invention discloses a low-odor high-performance long glass fiber reinforced polypropylene composite. According to a formula, the low-odor high-performance long glass fiber reinforced polypropylenecomposite is prepared from the following raw materials in parts by weight: 40-80 parts of polypropylene, 10-50 parts of glass fibers, 2-4 parts of a compatilizer, 0.5-1 part of black masterbatch and0.5-1 part of an antioxygen. Compared with the long glass fiber reinforced material of the same trademark commonly seen on the market, the prepared long glass fiber reinforced polypropylene compositeis low in odor, the detected odor is reduced to 3.5 level from the conventional 4.0 level according to the Volkswagen odor detection standard PV3900, and the phenomena of fiber floating on the surfaceand agglomeration are obviously improved. The attractive appearance is achieved while the mechanical property of the material is guaranteed, and the low-odor high-performance long glass fiber reinforced polypropylene composite is widely applied to the fields of auto interior trimming, building industry, municipal engineering and the like.

Description

technical field [0001] The invention relates to the technical field of polypropylene materials, in particular to a long glass fiber reinforced polypropylene composite material and a preparation method thereof. The material is suitable for the manufacture of automotive appearance parts, electrical accessories, municipal engineering supplies, etc. Background technique [0002] The modern automobile industry is developing rapidly, and the trend of environmental protection and low carbon is becoming more and more obvious. Under the concept of replacing steel with plastic, many materials have been developed to replace original metal parts. Long glass fiber reinforced polypropylene composites have received more and more attention in the automotive industry. Compared with short fiber reinforced polypropylene, they have higher tensile, flexural strength and modulus, which contributes to the realization of polypropylene general plastics in The wide application on the bearing parts o...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08K7/14C08J5/04
CPCC08J5/043C08J2323/12C08J2451/06C08K7/14
Inventor 何书珩张杨蔡青周文
Owner CHONGQNG PRET NEW MATERIAL