Low specific density filling master batch for polypropylene injection molding and preparation method of low specific density filling master batch

A filling masterbatch, polypropylene technology, applied in the field of polypropylene injection molding with low specific gravity filling masterbatch and its preparation, can solve the problems of difficult dispersion, broken, easy delamination, etc.

Inactive Publication Date: 2018-07-13
SHANXI HAINUO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the powdery hollow glass microspheres are filled with polypropylene, the addition operation is cumbersome. Not only is it easy to generate dust when adding, but also the powdery hollow glass microspheres are difficult to disperse in polypropylene and are easy to delaminate. Beads are often crushed too much when sheared through the twin screws

Method used

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  • Low specific density filling master batch for polypropylene injection molding and preparation method of low specific density filling master batch

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Experimental program
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Effect test

Embodiment 1

[0014] A low-specific-gravity filler masterbatch for polypropylene injection molding, which includes the following components in parts by weight in every 100g of the polypropylene injection-molding low-specificity filler masterbatch: 35g of polypropylene, 40g of hollow glass microspheres, 18g of talcum powder, and Compatible agent 5g, antioxidant 0.5g and carbon black 1.5g.

[0015] The preparation method of the above filler masterbatch is: put polypropylene, compatibilizer, antioxidant and carbon black in a high-speed mixer, stir and mix at a speed of 450r / min for 3min, and then add it to the co-rotating parallel twin-screw extruder. In the main feeding barrel, put talcum powder and hollow glass microspheres into a high-speed mixer, stir and mix at a speed of 450r / min for 5 minutes, then add them to the side feeding barrel of the co-rotating parallel twin-screw extruder, and finally melt Extrusion, cooling, air drying, pelletizing, sieving, packaging.

Embodiment 2

[0017] A low-specific-gravity filler masterbatch for polypropylene injection molding, which includes the following components in parts by weight in every 100g of the polypropylene injection-molding low-specificity filler masterbatch: 40g of polypropylene, 34g of hollow glass microspheres, 20g of talcum powder, and Compatible agent 3g, antioxidant 1g and carbon black 2g.

[0018] The preparation method of the above filler masterbatch is: put polypropylene, compatibilizer, antioxidant and carbon black in a high-speed mixer, stir and mix at a speed of 400r / min for 5min, and then add it to the co-rotating parallel twin-screw extruder. In the main feeding barrel, put talcum powder and hollow glass microspheres into a high-speed mixer, stir and mix at a speed of 400r / min for 8 minutes, then add them to the side feeding barrel of the co-rotating parallel twin-screw extruder, and finally melt Extrusion, cooling, air drying, pelletizing, sieving, packaging.

Embodiment 3

[0020] A low-specific-gravity filler masterbatch for polypropylene injection molding, which includes the following components in parts by weight in every 100g of the polypropylene injection-molding low-specificity filler masterbatch: 50g of polypropylene, 20g of hollow glass microspheres, 25g of talcum powder, and Compatible agent 3.2g, antioxidant 0.8g and carbon black 1g.

[0021] The preparation method of the above-mentioned filling masterbatch is: put polypropylene, compatibilizer, antioxidant and carbon black in the high-speed mixer, stir and mix with the speed of 350r / min for 8min, then add to the same direction parallel twin-screw extruder In the main feeding barrel, put talcum powder and hollow glass microspheres into a high-speed mixer, stir and mix at a speed of 350r / min for 10 minutes, then add them to the side feeding barrel of a parallel twin-screw extruder, and finally melt Extrusion, cooling, air drying, pelletizing, sieving, packaging.

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Abstract

The invention discloses a low specific density filling master batch for polypropylene injection molding and a preparation method of the low specific density filling master batch. The low specific density filling master batch is applied to direct injection molding of lightened components such as automobile interior and exterior door plates, consoles, dashboards and bumpers. Every 100 weight parts of the low specific density filling master batch for polypropylene injection molding comprises the following components in parts by weight: 35-50 parts of polypropylene, 20-40 parts of hollow glass beads, 20-25 parts of talcum powder1, 3-5 parts of a compatilizer, 0.5-1 part of an antioxidant and 1-2 parts of carbon black. By adopting the master batch, the operation that powder hollow glass beads are added in polypropylene injection molding is avoided, flying dust can be avoided, in addition, the problems that the powder hollow glass beads are hard to disperse and liable to layer in polypropylene, and an excessive number of hollow glass beads can be broken in double-screw rod shearing, can be solved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a low-specific-gravity filler masterbatch for polypropylene injection molding and a preparation method thereof. Background technique [0002] Polypropylene resin is a semi-crystalline thermoplastic with high impact resistance, mechanical properties, resistance to multiple organic solvents, acid and alkali corrosion resistance, etc. It is widely used in the industry and is the most common polymer material one. As a new type of filler, hollow glass microspheres are gradually being recognized and applied with many properties such as light specific gravity, large volume, high dispersion, fluidity, and lubricity. Under suitable production process conditions, polypropylene with hollow glass microspheres has good impact resistance, mechanical toughness, resistance to various organic solvents and acid and alkali corrosion resistance. However, when the powdery hollow glass mic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08K13/04C08K7/28C08K3/34C08K3/04
CPCC08J3/226C08J2323/12C08J2423/12C08J2451/06C08K3/04C08K3/34C08K7/28C08K13/04C08K2201/003
Inventor 申鹏展
Owner SHANXI HAINUO TECH CO LTD
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