PLA (polylactic acid) degradable color master batch and preparation method thereof

A color masterbatch and pigment technology, which is applied in the field of plastic coloring, can solve the problems affecting the environmental protection and degradation performance of PLA color masterbatch, and achieve the effects of easy control of processing technology, uniform coloring and low cost.

Inactive Publication Date: 2015-05-27
LIFENG NEW MATERIAL TECH SHENZHEN
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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 overcome the deficiencies of the above-mentioned prior art, to provide a PLA degradable color masterbatch and its preparation method, aiming to solve the shortcom

Method used

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  • PLA (polylactic acid) degradable color master batch and preparation method thereof

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preparation example Construction

[0036] Correspondingly, the embodiment of the present invention provides a method for preparing PLA degradable color masterbatch, the flow chart of the preparation method is as follows figure 1 Shown, this preparation method comprises the steps:

[0037] S01 Weighing formula components

[0038] Weigh the PLA plastics, refined pigments and auxiliary agents respectively according to the formula of the above-mentioned PLA degraded color masterbatch;

[0039] S02 Prepare the mixture

[0040] Add the PLA plastic, refined pigments and additives weighed in step S01 into a mixer, and mix evenly to obtain a mixture;

[0041] S03 melt extrusion

[0042] Add the mixture obtained in step S02 into a twin-screw extruder, and melt extrude to obtain PLA degraded color masterbatch. The process conditions are: the extrusion temperature is 200-230°C, the long diameter of the twin-screw extruder The ratio is 40:1~52:1, the speed of twin-screw extruder is 300-550rpm, extruded into PLA masterba...

Embodiment 1

[0048] This embodiment PLA degradation color masterbatch, by weight percentage, is made up of following components:

[0049] PLA plastic 70%, refined pigment 22%, additives 8%.

[0050] Its preparation method is as follows:

[0051] (1) take each component by above-mentioned percentage by weight;

[0052](2) Put the PLA plastics, refined pigments and additives weighed in the step (1) into a mixer, and mix evenly to obtain a mixture;

[0053] (3) Add the mixture obtained in step (2) into a twin-screw extruder, and melt and extrude to obtain a PLA degraded masterbatch. The process conditions are: the extrusion temperature is 200-230°C, and the twin-screw extruder The length-to-diameter ratio of the extruder is 40:1~52:1, and the speed of the twin-screw extruder is 300-550rpm.

Embodiment 2

[0055] The PLA degradation color masterbatch of this embodiment, by weight percentage, is made up of following components:

[0056] PLA plastic 66%, refined pigment 25%, additive 9%.

[0057] Its preparation method is as follows:

[0058] (1) take each component by above-mentioned percentage by weight;

[0059] (2) Put the PLA plastics, refined pigments and additives weighed in the step (1) into a mixer, and mix evenly to obtain a mixture;

[0060] (3) Add the mixture obtained in step (2) into a twin-screw extruder, and melt and extrude to obtain a PLA degraded masterbatch. The process conditions are: the extrusion temperature is 200-230°C, and the twin-screw extruder The length-to-diameter ratio of the extruder is 40:1~52:1, and the speed of the twin-screw extruder is 300-550rpm.

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Abstract

The invention belongs to the field of plastic coloring, and provides a PLA (polylactic acid) degradable color master batch and a preparation method thereof. The PLA degradable color master batch is prepared from the following raw materials in percentage by weight: 66-74% of PLA plastic, 19-25% of refined pigment and 7-9% of assistant. The preparation method comprises the following steps: weighing the components according to percentage by weight, uniformly mixing the components to obtain a mixture, adding the obtained mixture into a double screw extruder, and carrying out melt extrusion to obtain the PLA degradable color master batch. The PLA degradable color master batch has the advantages of uniform coloring, low cost, controllable processing technique and the like on the premise of not changing the advantages of environment friendliness and degradability of the PLA plastic, and is widely used in the traditional plastic processing techniques, such as injection molding, blow molding, film blowing, sheet making and the like.

Description

technical field [0001] The invention belongs to the field of plastic coloring, and in particular relates to a PLA degradable color masterbatch and a preparation method thereof. Background technique [0002] Color masterbatch is also called pigment preparation, which is composed of pigment, carrier resin and additives. Color masterbatch is a high-efficiency colorant formed by uniformly dispersing high-concentration pigments in specific resins through a special method, so it is also called It is a pigment concentrate, which has quickly occupied a place in the world since the appearance of plastics. It brings convenience to production and life, but also causes white pollution problems. At the same time, due to the continuous reduction of petroleum resources, the cost of traditional plastics industries that use petroleum as raw materials has increased. , biodegradable plastics to replace traditional plastics will become a trend, among them, PLA plastic (polylactic acid) is a mor...

Claims

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Application Information

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IPC IPC(8): C08L67/04B29C47/92B29C48/92
Inventor 吴錬楷
Owner LIFENG NEW MATERIAL TECH SHENZHEN
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