Glass fiber reinforced polypropylene resin and preparation method thereof

A polypropylene resin and glass fiber technology, applied in the field of polypropylene resin, can solve the problems of easy warpage, rough surface, poor impact strength, etc., to improve tensile strength, heat distortion temperature, and warpage resistance. Effect

Active Publication Date: 2014-01-15
MITAC PRECISION TECH(KUNSHAN) CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of ordinary circular cross-sectional glass fiber reinforced polypropylene is prone to warping problems during molding processing, and the products filled with glass fibers have poor impact strength, easy deformation when heated, and rough surfaces, which limit its application.

Method used

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  • Glass fiber reinforced polypropylene resin and preparation method thereof
  • Glass fiber reinforced polypropylene resin and preparation method thereof
  • Glass fiber reinforced polypropylene resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Glass fiber reinforced polypropylene resin of the present invention, by weight percentage, it comprises following components:

[0025]

[0026] Dry the polypropylene resin in an oven with a dehumidification dryer at a temperature of 90-110°C for 4-8 hours; weigh the flame retardant and processing aids and add them to a high-speed mixer for high-speed pre-mixing; mix the above steps The mixture of polypropylene, flame retardant and processing aid, and the weighed flat glass fiber are sequentially added to the twin-screw extruder to melt and extrude to pelletize. ℃, the second interval is 160-200°C, the third interval is 160-200°C, the fourth interval is 160-200°C, the fifth interval is 160-200°C, the sixth interval is 180-220°C, the seventh interval is 180-220°C, the eighth interval is 180-220°C , the nine intervals are 180-220°C, and the temperature of the machine head is 210-240°C.

Embodiment 2

[0028] Glass fiber reinforced polypropylene resin of the present invention, by weight percentage, it comprises following components:

[0029]

[0030]

[0031] Dry the polypropylene resin in an oven with a dehumidification dryer at a temperature of 90-110°C for 4-8 hours; weigh the flame retardant and processing aids and add them to a high-speed mixer for high-speed pre-mixing; mix the above steps The mixture of polypropylene, flame retardant and processing aid, and the weighed flat glass fiber are sequentially added to the twin-screw extruder to melt and extrude to pelletize. ℃, the second interval is 160-200°C, the third interval is 160-200°C, the fourth interval is 160-200°C, the fifth interval is 160-200°C, the sixth interval is 180-220°C, the seventh interval is 180-220°C, the eighth interval is 180-220°C , the nine intervals are 180-220°C, and the temperature of the machine head is 210-240°C.

Embodiment 3

[0033] Glass fiber reinforced polypropylene resin of the present invention, by weight percentage, it comprises following components:

[0034]

[0035] Dry the polypropylene resin in an oven with a dehumidification dryer at a temperature of 90-110°C for 4-8 hours; weigh the flame retardant and processing aids and add them to a high-speed mixer for high-speed pre-mixing; mix the above steps The mixture of polypropylene, flame retardant and processing aid, and the weighed flat glass fiber are sequentially added to the twin-screw extruder to melt and extrude to pelletize. ℃, the second interval is 160-200°C, the third interval is 160-200°C, the fourth interval is 160-200°C, the fifth interval is 160-200°C, the sixth interval is 180-220°C, the seventh interval is 180-220°C, the eighth interval is 180-220°C , the nine intervals are 180-220°C, and the temperature of the machine head is 210-240°C.

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PUM

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Abstract

The invention relates to glass fiber reinforced polypropylene resin and a preparation method thereof. The resin comprises the following components by weight percent: 20%-70% of polypropylene, 20%-50% of flat glass fiber, 5%-40% of flame retardant and 0.1%-5% of processing agent. The preparation method comprises the following steps of: (a) drying polypropylene resin in an oven with a dehumidification drying machine at the temperature of 90-110 DEG C for 4-8 hours; (b) weighing the flame retardant and the processing agent and adding into a high-speed mixer for high-speed premixing; and (c) sequentially adding polypropylene in step (a), a mixture in step (b) and the weighed flat glass fiber into a double-screw extruder for pelletizing by melt extrusion.

Description

【Technical field】 [0001] The invention relates to a polypropylene resin, in particular to a glass fiber reinforced polypropylene resin and a preparation method thereof. 【Background technique】 [0002] Polypropylene (PP plastic, the English name is Polypropylene) is one of the general-purpose plastics, which has excellent comprehensive properties, good chemical stability, good molding performance and relatively low price. It is widely used in household electronic appliances and automobiles. and other fields have been widely used. [0003] Glass fiber reinforced polypropylene can increase its strength, improve rigidity, reduce shrinkage and increase dimensional stability. However, the use of ordinary circular cross-sectional glass fiber reinforced polypropylene is prone to warping problems during molding processing, and the products filled with glass fibers have poor impact strength, easy deformation when heated, and rough surfaces, which limit its application. 【Content of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08K13/04C08K7/14C08K5/5313C08K5/3492B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29B9/06C08K7/14C08K13/04B29C2948/92704C08K2201/003C08L2201/02C08L23/14B29B9/14B29B7/46B29B7/72B29B7/7461B29B7/90B29B9/12C09K21/12C08K5/0066B29C48/40B29C2948/92895B29C2948/92904
Inventor 李俊伟朱明毅浦蔚蔚朱欣睿刘凡杨刚
Owner MITAC PRECISION TECH(KUNSHAN) CORP
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