Glass fiber reinforced polypropylene composite material for car radiator grid and preparation process thereof

A technology for automobile radiators and composite materials, which is applied in the field of glass fiber reinforced polypropylene composite materials for automobile radiator grilles and its preparation technology, which can solve the problems of high prices, increased production costs, and failure to meet production needs. problems, achieve excellent heat resistance, improve rigidity and heat resistance

Inactive Publication Date: 2013-04-17
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are two main types of electroless grid materials: one is acrylonitrile-styrene-methacrylate terpolymer (ASA), ASA has good rigidity, heat resistance and weather resistance, but it is expensive , which increases the production cost; the other is a compound of polypropylene, thermoplastic elastomer and talc, although the cost of the compound is low, the heat resistance and impact of the compound are not good
Therefore, the above two materials cannot meet the production needs very well.

Method used

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  • Glass fiber reinforced polypropylene composite material for car radiator grid and preparation process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In this embodiment, the glass fiber reinforced polypropylene composite material for the automobile radiator grille is prepared as follows:

[0023] First, 69.8 parts of polypropylene PP SP179, 0.2 parts of phenolic heat stabilizer 1790, 0.3 parts of phosphite heat stabilizer 168, 0.3 parts of auxiliary EBS, 0.2 parts of hindered amine light stabilizer 770, 0.2 parts of nucleating agent TMP-5, 10 parts of ethylene-α-octene copolymer POE LC670, 4 parts of maleic anhydride grafted polypropylene CA-100 are put into a twin-screw extruder with a length-to-diameter ratio of 40:1 for melt mixing and dispersion;

[0024] Then 15 parts of alkali-free chopped glass fiber 305K was accurately added into the twin-screw extruder from the side feeding through a loss-in-weight metering scale; finally, it was extruded and pelletized by the twin-screw extruder at 200°C to obtain The glass fiber reinforced polypropylene composite material for the automobile radiator grille.

Embodiment 2

[0026] In this embodiment, the glass fiber reinforced polypropylene composite material for the automobile radiator grille is prepared as follows:

[0027] First, 63.5 parts of polypropylene PP K9017, 0.5 parts of phenolic heat stabilizer 1790, 0.5 parts of phosphite heat stabilizer 168, 0.5 parts of auxiliary EB-FF, 0.5 parts of hindered amine light stabilizer 944, 0.5 parts Core agent HPN-20E, 10 parts of ethylene-α-octene copolymer POE LC670, 4 parts of maleic anhydride grafted polypropylene 1001CN are put into a twin-screw extruder with a length-to-diameter ratio of 40:1 for melt mixing and dispersion;

[0028] Then 20 parts of alkali-free chopped glass fiber 508A is accurately fed into the twin-screw extruder through a loss-in-weight metering scale from the side feeding; finally, it is extruded and pelletized by the twin-screw extruder at 200°C to obtain The glass fiber reinforced polypropylene composite material for the automobile radiator grille.

Embodiment 3

[0030] In this embodiment, the glass fiber reinforced polypropylene composite material for the automobile radiator grille is prepared as follows:

[0031] First, 48 parts of polypropylene PP K9026, 1 part of phenolic heat stabilizer 1010, 1 part of phosphite heat stabilizer 627A, 1 part of auxiliary zinc stearate, 1 part of hindered amine light stabilizer 622, 1 part Nucleating agent HTPUTRA5, 15 parts of ethylene-α-octene copolymer POE 8130, and 7 parts of maleic anhydride grafted polypropylene 1001CN are put into a twin-screw extruder with a length-to-diameter ratio of 40:1 for melt mixing and dispersion;

[0032] Then 25 parts of alkali-free chopped glass fiber 508B is accurately added into the twin-screw extruder through a loss-in-weight metering scale from the side feeding; finally, it is extruded and pelletized by the twin-screw extruder at 200°C to obtain The glass fiber reinforced polypropylene composite material for the automobile radiator grille.

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Abstract

The invention discloses a glass fiber reinforced polypropylene composite material for a car radiator grid and a preparation process thereof. The composite material comprises the following components in percentage by weight: 32-78% of polypropylene, 0-2% of a thermal stabilizer, 0-2% of an additive, 0-2% of an illumination stabilizer, 0-2% of a nucleating agent, 5-20% of a flexibilizer, 2-10% of a compatilizer and 15-30% of chopped glass fiber. Due to the adoption of the chopped glass fiber for filling, the rigidity and the heat resistance of the material are greatly improved, the linear expansion coefficient (CLTE) of the material can be also reduced, and the problems of size change and deformation of a workpiece due to rapid change of external environment temperature are solved. The prepared composite material is excellent in heat resistance, high in rigidity, excellent in size stability and weather resistance and high in impact resistance, and satisfactorily meets the demand of the car radiator grid.

Description

Technical field [0001] The invention relates to the technical field of processing glass fiber reinforced polypropylene composite materials, in particular to a glass fiber reinforced polypropylene composite material for automobile radiator grilles and a preparation process thereof. Background technique [0002] The car radiator grille is the hot air exhaust channel of the engine compartment. Therefore, the radiator grille not only needs to have a good appearance, but the material itself must also have certain heat resistance, impact resistance and weather resistance. Traditional automotive radiator grille materials are mainly electroplating-grade ABS, which has metallic luster and excellent rigidity and impact resistance, but the wastewater generated in the electroplating process pollutes the environment greatly, and the electroplating process is costly. Therefore, as the pressure on environmental protection and the cost pressure of the auto parts industry continue to increase, no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08K13/04C08K7/14B29C47/92B29C48/92
CPCB29B7/46B29B7/72B29B7/90B29B9/06B29B9/12B29B9/14B29C48/04B29C48/40B29C48/92B29C2948/92704B29C2948/92895
Inventor 孙刚周英辉李国明程文超李欣李志平陈延安丁超罗忠富
Owner JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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