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Glass fiber reinforced modified polypropylene material and preparation method thereof

A polypropylene material and polypropylene technology, applied in the field of glass fiber reinforced modified polypropylene material and its preparation, can solve the problems of low warpage and heat preservation, high thermal conductivity, easy warpage and deformation, etc., and achieve low warpage Deformation, low density, effect of reduced density

Inactive Publication Date: 2016-03-02
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome defects such as high density, high thermal conductivity, high dielectric constant, and easy warping and deformation of glass fiber reinforced polypropylene materials in the prior art, the purpose of the present invention is to provide a glass fiber reinforced modified polypropylene material, The material has high strength and high modulus, while the density can be reduced below that of pure polypropylene resin, and has the characteristics of low dielectric constant, low warpage and heat preservation

Method used

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  • Glass fiber reinforced modified polypropylene material and preparation method thereof

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preparation example Construction

[0035] Preparation of long glass fiber reinforced polypropylene masterbatch: mix polypropylene resin with processing aids such as antioxidants and extrude it into a high-temperature die through an extruder. The temperature of the die is controlled at 260-280°C; continuous glass Under the stretching effect of the traction equipment, the fiber is impregnated with the molten polymer in the extrusion die, then drawn, cooled, and then pelletized to obtain long glass fiber reinforced polypropylene masterbatch. The mass percentage of glass fiber in the masterbatch is 30% ~60%.

[0036] Preparation of chopped glass fiber reinforced polypropylene masterbatch: mix polypropylene resin, graft compatibilizer and additives uniformly at room temperature and pour them into the main feeding port of the twin-screw extruder, pour glass fiber chopped strands into into the side feeding port at the back end of the twin-screw extruder, the temperature of the extruder is controlled at 200~230°C, the ...

Embodiment 1

[0038] Mix 54 parts of polypropylene resin, 5 parts of PP-g-MAH graft compatibilizer, 0.4 part of antioxidant 1010, 0.4 part of antioxidant 168, and 0.2 part of erucamide lubricant at room temperature with a high mixer , the obtained mixture was poured into the main feeding port of the twin-screw extruder, and 40 parts of hollow glass microspheres (density 0.4g / cm 3 , with an average particle size of 15um) poured into the side feeding port at the rear end of the twin-screw extruder, controlling the temperature of the extruder at 200~230°C, and extruding the mixture through the twin-screw extruder to obtain glass micropearl grain. At room temperature, the long glass fiber reinforced polypropylene masterbatch with a glass fiber content of 50% and the hollow glass microbead masterbatch prepared above are evenly mixed in a ratio of 50:50 parts by weight to obtain a glass fiber reinforced modified polypropylene masterbatch. Acrylic material.

[0039] In this embodiment, hollow gl...

Embodiment 2

[0041] Mix 54 parts of polypropylene resin, 5 parts of PP-g-MAH graft compatibilizer, 0.4 part of antioxidant 1010, 0.4 part of antioxidant 168, and 0.2 part of erucamide lubricant at room temperature with a high mixer , the obtained mixture is poured into the main feeding port of the twin-screw extruder, and 40 parts of hollow glass microspheres (density 0.3g / cm 3 , with an average particle size of 10um) poured into the side feeding port at the rear end of the twin-screw extruder, control the temperature of the extruder at 200~230°C, and extrude the mixture through the twin-screw extruder to obtain glass micropearl grain. At room temperature, the long glass fiber reinforced polypropylene masterbatch with a glass fiber content of 50% and the hollow glass microbead masterbatch prepared above are evenly mixed in a ratio of 40:60 parts by weight to obtain a glass fiber reinforced modified polypropylene masterbatch. Acrylic material.

[0042] In this embodiment, hollow glass micro...

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Abstract

The present invention discloses a glass fiber reinforced modified polypropylene material and a preparation method thereof, the glass fiber reinforced modified polypropylene material comprises the following components: 20 to 80 parts of glass fiber reinforced polypropylene masterbatch and 20 to 80 parts of glass bead masterbatch; wherein the glass bead masterbatch comprises the following components: 40-70 parts of polypropylene, 20-50 parts of glass beads and 1-10 parts of a grafting compatibility agent. The preparation method is as follows: firstly weighing the polypropylene, the glass beads and the grafting compatibility agent in proportion and mixing evenly for extruding, pulling and pelletizing to obtain the glass bead masterbatch by a twin-screw extruder; mixing the glass bead masterbatch and the glass fiber reinforced polypropylene masterbatch in proportion, using a single-screw injection molding machine for injection to obtain the glass fiber reinforced modified polypropylene material. The glass fiber reinforced modified polypropylene material has the characteristics of high strength, low density, low dielectric constant, low buckling deformation and thermal insulation and the like, and can meet the people requirements of lightweight plastic products; by use of the masterbatch production way, the operation is simple, the complex proportion can be changed according to the performance requirements of the final products, and the glass fiber reinforced modified polypropylene material has high application value and broad application prospects.

Description

technical field [0001] The invention relates to the technical field of polymer material modification, in particular to a glass fiber reinforced modified polypropylene material and a preparation method thereof. Background technique [0002] Glass fiber reinforced polypropylene is a kind of composite material with excellent comprehensive properties. It has been widely used in washing machines, dishwashers, water pipelines, water pump casings, electric tools, automobiles and other fields. However, glass fiber reinforced polypropylene materials also have many disadvantages: because the density of glass fiber itself is much higher than that of the resin matrix, the density of glass fiber reinforced modified polypropylene materials commonly used in the market is very high; and due to the large aspect ratio of glass fiber, in It is easy to be oriented during the molding process, so that the molded product has the defect of warping and deformation. In addition, the addition of glas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08K13/06C08K7/14C08K7/28C08K5/134C08K5/526C08J3/22
CPCC08L23/12C08K2201/003C08K2201/014C08L2205/03C08L51/06C08K13/06C08K7/14C08K7/28C08K5/1345C08K5/526
Inventor 吴军陆湛泉杨霄云叶南飚肖鹏杨友强
Owner KINGFA SCI & TECH CO LTD
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