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Polypropylene color masterbatch and preparation method thereof

A color masterbatch and polypropylene technology, applied in the field of plastic coloring, can solve the problems of uneven color, easy to produce flow lines, large color difference, etc., and achieve the effect of not easy to sink, overcome flow lines, and excellent dispersion

Inactive Publication Date: 2012-01-25
洪伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to solve the problems existing in the coloring of the above-mentioned existing polypropylene color masterbatch, and to provide a polypropylene color masterbatch with high dispersion and high stability, which can overcome the problem of easy flow when applied to the coloring of polypropylene products Streaks, uneven color, large color difference, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Under normal temperature and pressure, mix the following components and weight percentages: 50% polypropylene, 40% titanium dioxide, 8% polyethylene wax, and 2% water, and mix them in a high-speed mixer for 10 minutes at high speed, using a twin-screw extruder Carry out melt blending, the temperature is controlled at 190 ° C, the screw speed is 200r / min, the pigment is uniformly dispersed in the carrier resin through the shearing and mixing of the screw, and then the water-cooled strand granulation is carried out to obtain the columnar color masterbatch of the present invention grain.

Embodiment 2

[0016] Under normal temperature and pressure, the following components and percentages by weight: 35% polypropylene, 35% lithopone, 1% phthalocyanine green, 2% ultramarine blue, 2% EBS, 8% oxidized polyethylene wax, 2% white mineral oil %, phosphite 168 2%, azodicarbonamide (ADC) 1%, 4,4'-oxobis(sulfonylsemicarbazide) 2%, dicumyl peroxide (DCP) 1%, di Tert-butyl peroxide (DTBP) 1%, calcium carbonate 8%. Perform high-speed mixing in a high-speed mixer for 15 minutes, use a banbury mixer to banbury to a temperature of 165° C., and then use air-cooling and hot-cut granulation to obtain disc-shaped color masterbatches of the present invention.

Embodiment 3

[0018] Under normal temperature and pressure, the following components and percentages by weight: 70% polypropylene, 20% iron oxide red, 7% polyethylene glycol, 2% OBSH, 1% antioxidant 1010 were mixed in a high-speed mixer at high speed Mix for 10 minutes, use a twin-screw extruder for melt blending, the temperature is controlled at 180 ° C, the screw speed is 200 r / min, the pigment is uniformly dispersed in the carrier resin through shearing and mixing of the screw, and then water-cooled The color masterbatch of the present invention is obtained by granulation.

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PUM

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Abstract

The invention discloses a polypropylene color masterbatch and a preparation method thereof. The polypropylene color masterbatch comprises the following components, by weight, 20-70% of polypropylene, 0.01-70% of a toner, 0-40% of a dispersant, 0.1-10% of a foaming agent, 0-10% of a crosslinking agent, 0-2% of a heat stabilizer, and 0-40% of a filler. The preparation method comprises the following steps: burdening and mixing above components according above proportions, carrying out melt blending with a double screw extruder or an internal mixer, and granulating and drying to prepare the color masterbatch. The shape of the color masterbatch is cylindrical, beaded, square or round tablet-like according to different granulating modes. The polypropylene color masterbatch provided in the invention which can be used in coloring products of polypropylene extrusion, spinning and injection molding has the advantages of excellent dispersibility and color stability.

Description

technical field [0001] The invention relates to the field of plastic coloring, in particular to a polypropylene color masterbatch and a preparation method thereof. Background technique [0002] Polypropylene is a polymer material with the largest output and a wide range of applications. It has abundant raw materials, low price, easy processing and molding, and excellent comprehensive performance. Color masterbatches are often used to color polypropylene during its production and processing. Color masterbatch is composed of pigment, carrier resin and additives. When using masterbatch for coloring, the most likely problem is that the masterbatch and the base material are easy to separate during the process of mixing, feeding and unloading, resulting in uneven color and inconsistency in the production process of the product. [0003] After testing the color masterbatch and base material used for polypropylene coloring by different manufacturers, the average specific gravi...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08L71/08C08L51/06C08K3/22C08K13/02C08K5/524C08K5/14C08K3/26C08K5/11C08K3/34C08J3/22C08J9/10
Inventor 洪伟
Owner 洪伟
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