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Polyolefin masterbatch and preparation method thereof

A color masterbatch and polyolefin technology, applied in the field of plastic coloring, can solve the problems of easy to produce flow pattern, uneven color, large color difference, etc., and achieve the effect of overcoming flow pattern, not easy to sink, and excellent in dispersibility.

Inactive Publication Date: 2011-11-23
广东波斯科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Under normal temperature and pressure, mix the following components and weight percentages: LDPE 20%, LLDPE 30%, titanium dioxide 40%, polyethylene wax 8%, water 2%, and mix at high speed in a high-speed mixer for 10 minutes, using a twin screw The extruder is melted and blended, 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 water-cooled stranding granulation is performed to obtain the columnar invention. Of masterbatch.

Embodiment 2

[0018] Under normal temperature and pressure, the following components and weight percentages: EVA 23%, LDPE 12%, 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 %, di-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.

Embodiment 3

[0020] Under normal temperature and pressure, the following components and weight percentages: LDPE 60%, POE 10%, iron oxide red 20%, polyethylene glycol 7%, OBSH 2%, antioxidant 1010 1%, in a high-speed mixer Perform high-speed mixing for 10 minutes in the medium, and use a twin-screw extruder for melt blending. The temperature is controlled at 180°C and the screw speed is 200r / min. Through the shearing and mixing of the screw, the pigment is evenly dispersed in the carrier resin. The color masterbatch of the present invention is obtained by water-cooled drawing and granulation.

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PUM

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Abstract

The invention discloses a polyolefin masterbatch and a preparation method thereof. The polyolefin masterbatch comprises the following components by weight percent: 20-70% of carrier, 0.01-70% of toner, 0-40% of dispersant, 0.1-10% of foaming agent, 0-10% of crosslinking agent, 0-2% of heat stabilizer and 0-40% of filler. The preparation method comprises the following steps: using the components to dose in proportion, mixing, using a double-screw extruder or internal mixer to melt and blend, then granulating, and drying to obtain the masterbatch disclosed by the invention, wherein the masterbatch can be columnar, beaded, flaky or round according to different granulating ways. When the polyolefin masterbatch provided by the invention is used in polyolefin extrusion, spinning and the coloring of the injection molding product, the masterbatch has good dispersibility and color stability.

Description

Technical field [0001] The invention relates to the field of plastic coloring, in particular to a polyolefin masterbatch and a preparation method thereof. Background technique [0002] Polyolefin is a kind of polymer material with the largest output and is widely used. It has abundant raw materials, low price, easy processing and molding, and excellent comprehensive performance. Color masterbatches are often used to color polyolefins during production and processing. The 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, loading and unloading, resulting in uneven color and inconsistency in the production process of the product. [0003] By testing the color masterbatches and base materials used by different manufacturers for polyolefin coloring, the average specific gravity of the color masterbatches is r...

Claims

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Application Information

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IPC IPC(8): C08L23/00C08L23/08C08L23/06C08L31/04C08L51/06C08K13/02C08J9/04
Inventor 刘鹏卢俊文
Owner 广东波斯科技股份有限公司
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