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Modified polypropylene masterbatches and preparation method thereof

A technology of polypropylene and color masterbatch, which is applied in the field of modified polypropylene color masterbatch and its preparation, which can solve the problem of reducing the design and service life of plastic products, poor UV resistance and weather resistance of color masterbatch, and the inability to guarantee the stability of plastic products To achieve the effect of improving the surface properties, improving the dispersion and weather resistance level, and improving the compatibility

Inactive Publication Date: 2018-04-03
SHENZHEN BOCAI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing color masterbatch has poor anti-ultraviolet and weather resistance, which cannot guarantee the stability of plastic products during processing and outdoor use, which affects the design and service life of plastic products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Radiation-modified polypropylene of the present invention is prepared according to the following method:

[0032] Take 40kg of polypropylene and irradiate it through an electron accelerator. The energy level of the electron accelerator is 3.0MeV, and the irradiation dose is 12KGy. The irradiated polypropylene is mixed with 1kg of propylene to obtain the product.

Embodiment 2

[0034] Radiation-modified polypropylene of the present invention is prepared according to the following method:

[0035] Take 50kg of polypropylene and irradiate it through an electron accelerator. The energy level of the electron accelerator is 3.0MeV, and the irradiation dose is 25KGy. The irradiated polypropylene is mixed with 1kg of propylene.

Embodiment 3

[0037] The modified polypropylene color masterbatch of the present invention comprises 60 kg of irradiation grafted modified polypropylene, 10 kg of toner, 2 kg of diffusing powder and 0.5 kg of antioxidant.

[0038] The preparation method of modified polypropylene color masterbatch of the present invention comprises the following steps:

[0039] (1) Mix the irradiation-grafted modified polypropylene, toner, diffusion powder, and antioxidant in proportion, and stir for 3 minutes at a stirring speed of 1000 to 1200 r / min to obtain a mixture;

[0040] (2) After raising the temperature of the twin-screw granulator to 130-180°C, the mixture is sent to the twin-screw granulator for extrusion and granulation, wherein the screw temperature of the twin-screw granulator is: the temperature in the first zone is 130- 150°C, the temperature in the second zone is 150-170°C, the temperature in the third zone is 170-180°C, the temperature in the fourth zone is 160-170°C, and the temperature ...

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PUM

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Abstract

The invention relates to modified polypropylene masterbatches and a preparation method thereof. The modified polypropylene masterbatches comprise the following components in parts by weight: 60-90 parts of radiation grafting-modified polypropylene, 10-15 parts of toner, 2-3 parts of a diffusion powder, and 0.5-1 part of an antioxidant. The preparation method comprises the steps: stirring the components uniformly and then feeding into a twin-screw granulator for granulation. The masterbatches have beneficial effects that the polypropylene powder is irradiated by electron acceleration, then theirradiated polypropylene powder is mixed with a polypropylene monomer, processing aids such as the toner, the diffusion powder and the antioxidant are added at a certain proportion, granulation is performed by using the twin-screw granulator to obtain the modified functional polypropylene masterbatches; the addition amount of color concentrate in engineering plastics is reduced, the dispersion isimproved, the weather-proof grade is increased, and the cost is reduced.

Description

technical field [0001] The invention belongs to the field of color masterbatch processing, and in particular relates to a modified polypropylene color masterbatch and a preparation method thereof. Background technique [0002] There are three kinds of coloring methods for producing plastic products in the prior art: toner coloring, dyeing and pulling grain coloring and masterbatch coloring. When directly using toner for coloring, the coloring is very simple, but it has the disadvantages of easy to produce color spots, difficult to control color difference, and great environmental pollution. Dyeing Dyeing is to mix plastic raw materials and toner and then use mixing equipment such as twin-screw extruder for melt blending and coloring. Compared with coloring with toner, the coloring effect of granules has been greatly improved, but the plastic It needs to be heated twice, which not only increases the production cost, but also damages the mechanical properties of the product t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/22C08F255/02C08F210/06
CPCC08F255/02C08J3/226C08J2351/06C08F210/06
Inventor 钟山彭波
Owner SHENZHEN BOCAI NEW MATERIAL TECH