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Novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material and preparation method thereof

A composite material and polypropylene technology, applied in the field of polypropylene materials, can solve problems such as high cost and bad smell, and achieve the effects of production cost control, odor reduction, and production cost reduction

Inactive Publication Date: 2020-05-08
SHANGHAI PRET COMPOSITES +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the production cost of the existing long glass fiber reinforced polypropylene material for interior decoration is too high and the odor is bad at the same time. A new low-cost and environmentally friendly long glass fiber reinforced polypropylene composite material is provided:

Method used

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  • Novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Mix conventional polypropylene, compatibilizer, antioxidant, light stabilizer and carbon black masterbatch in proportion at high speed.

[0024] (2) After mixing the materials in step (1) evenly, enter the twin-screw extruder, and then enter the melt impregnation die head. The processing temperature is 220-250°C, and the speed of the main machine is 300-500rpm. A vacuum pumping system is added during the extrusion process.

[0025] (3) Preheat and dry the continuous long glass fiber for 3-5 hours to make the temperature 80-90°C, and pre-disperse the glass fiber through the tension frame.

[0026] (4) Multi-strand untwisted long glass fiber yarns are respectively drawn out from the bobbins and introduced into the melt impregnation mold box. The dipping die head is equipped with an ultrasonic dispersing device, and a fixed frequency of ultrasonic waves is applied to the mold box. The untwisted fiber is covered and impregnated by the molten modified polypropylene resi...

Embodiment 2

[0028] (1) The recycled polypropylene raw material is mixed with conventional polypropylene and extruded and pelletized as raw polypropylene, and the extrusion process is added to a vacuum system.

[0029] (2) Mix polypropylene, compatibilizer, antioxidant, light stabilizer, carbon black masterbatch and flavor at high speed in proportion.

[0030] (3) Mix the materials in step (2) evenly and enter the twin-screw extruder, and then enter the melt impregnation die head. The processing temperature is 220-250°C, and the speed of the main machine is 300-500rpm. A vacuum pumping system is added during the extrusion process.

[0031] (4) Preheat and dry the continuous long glass fiber for 3-5 hours so that the temperature is 80-90°C, and pre-disperse the glass fiber through the tension frame.

[0032] (5) Multi-strand untwisted long glass fiber yarns are respectively drawn out from the bobbin and introduced into the melt impregnation mold box. The dipping die head is equipped with ...

Embodiment 3

[0034] (1) The recycled polypropylene raw material is mixed with conventional polypropylene and extruded and pelletized as raw polypropylene, and the extrusion process is added to a vacuum system.

[0035] (2) Mix polypropylene, compatibilizer, antioxidant, light stabilizer, carbon black masterbatch and flavor at high speed in proportion.

[0036] (3) Mix the materials in step (2) evenly and enter the twin-screw extruder, and then enter the melt impregnation die head. The processing temperature is 220-250°C, and the speed of the main machine is 300-500rpm. A vacuum pumping system is added during the extrusion process.

[0037] (4) Preheat and dry the continuous long glass fiber for 3-5 hours so that the temperature is 80-90°C, and pre-disperse the glass fiber through the tension frame.

[0038] (5) Multi-strand untwisted long glass fiber yarns are respectively drawn out from the bobbin and introduced into the melt impregnation mold box. The dipping die head is equipped with ...

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Abstract

The invention discloses a novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material and a preparation method thereof. A formula for the composite material is prepared from the following components in parts by weight: 15 to 30 parts of regenerated polypropylene resin, 35 to 65 parts of conventional polypropylene resin, 20 to 30 parts of glass fibers, 1 to 3 parts of a compatilizer, 1 to 2 parts of carbon black master batch, 0.5 to 1.5 parts of an antioxidant, 0.5 to 1.5 parts of a light-resistant additive and 0.03 to 0.05 part of essence. Compared with common long glass fiber reinforced materials of the same trademark on the market, the long glass fiber reinforced polypropylene composite material prepared by the invention has the advantages that the basic raw materials contain certain regenerated polypropylene resin, so production cost is reduced, and meanwhile, the mainstream concept of low carbon and environment friendliness on the market is accorded with. For the problems of poor subsequent odor and the like caused by a regenerated material, the regenerated polypropylene raw material is treated by a technological means, so the final composite material has the advantages of low production cost, few surface defects and improved odor, and can be widely applied to the fields of automobile materials, municipal engineering and the like.

Description

technical field [0001] The invention relates to the technical field of polypropylene materials, in particular to a novel environment-friendly and low-cost 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] In recent years, the concept of low-carbon environmental protection has gradually risen, and the automobile industry has gradually increased its emphasis on the development and utilization of environmentally friendly materials. For example, first-line brands such as Audi and BMW are gradually increasing the proportion of recycled materials used in their products, which can not only reduce The production cost of the product is also of great significance for the recycling of materials to reduce energy consumption. Under the concept of green and environmental protect...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08K13/04C08K7/14C08K3/04C08K5/00C08J5/04
CPCC08J5/043C08J2323/12C08J2451/06C08K3/04C08K5/0008C08K7/14C08K13/04C08K2201/007
Inventor 何书珩张杨姚代川周臻琪蔡青周武周文
Owner SHANGHAI PRET COMPOSITES