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 mast

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0013] Example 1

[0014] Under normal temperature and pressure, the following components and weight percentages: polypropylene 50%, titanium dioxide 40%, polyethylene wax 8%, water 2%, mixed at high speed in a high-speed mixer for 10 minutes, using a twin-screw extruder Melt blending is carried out, the temperature is controlled at 190℃, 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 stranding granulation is performed to obtain the columnar color masterbatch of the present invention grain.

Example Embodiment

[0015] Example 2

[0016] Under normal temperature and pressure, the following components and weight percentages: polypropylene 35%, lithopone 35%, phthalocyanine green 1%, ultramarine blue 2%, EBS 2%, oxidized polyethylene wax 8%, white mineral oil 2 %, phosphite 168 2%, azodicarbonamide (ADC) 1%, 4,4'-oxobis (sulfonyl semicarbazide) 2%, dicumyl peroxide (DCP) 1%, two Tert-butyl peroxide (DTBP) 1%, calcium carbonate 8%. High-speed mixing is carried out in a high-speed mixer for 15 minutes, and after mixing to a temperature of 165° C. by banburying, air-cooling and hot-cutting granulation are used to prepare the disc-shaped masterbatch of the present invention.

Example Embodiment

[0017] Example 3

[0018] Under normal temperature and pressure, the following components and weight percentages: polypropylene 70%, iron oxide red 20%, polyethylene glycol 7%, OBSH 2%, antioxidant 1010 1%, high-speed mixing machine Mix for 10 minutes, use a twin-screw extruder for melt blending, the temperature is controlled at 180℃, 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 water-cooled drawing 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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