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High-gloss black PLA master batch and preparation method thereof

A black, masterbatch technology, applied in the field of PLA, can solve the problems of insufficient improvement of PLA mechanical properties, limited application fields, insufficient to achieve high gloss and low blackness, etc., to improve tensile strength, easy to disperse, The effect of improving dispersibility

Active Publication Date: 2020-01-03
DONGGUAN JISHUO IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN104650549 discloses a PLA degradable color masterbatch, but the refined pigments of the masterbatch are organic pigments or inorganic pigments, that is, the mechanical properties of PLA are not improved too much, the application field is very limited, and the filling amount is also limited. Not enough to meet the requirements of high light and low blackness

Method used

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  • High-gloss black PLA master batch and preparation method thereof
  • High-gloss black PLA master batch and preparation method thereof
  • High-gloss black PLA master batch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high-gloss black PLA masterbatch, comprising the following raw materials in parts by weight:

[0024]

[0025]

[0026] Described black filler is made through the following steps:

[0027] (1) Add 4 parts by weight of cornstarch and 10 parts by weight of microcrystalline cellulose into 100 parts by weight of water, then heat up to 90°C, stir and react for 2 hours, then filter, dry, and pulverize to obtain a skeleton matrix;

[0028] (2) Add 10 parts by weight of the skeleton matrix and 20 parts by weight of nano-carbon black into 100 parts by weight of water, ultrasonically disperse, and then filter and dry to obtain the black filler.

[0029] Wherein, the particle size of the microcrystalline cellulose is 40 μm, the particle size of the skeleton matrix is ​​150 μm, and the particle size of the nano-carbon black is 20 nm.

[0030] Wherein, the oscillation frequency of the ultrasonic dispersion is 25KHz, the time is 30min, and the temperature is 40°C.

[0031] ...

Embodiment 2

[0038] A high-gloss black PLA masterbatch, comprising the following raw materials in parts by weight:

[0039]

[0040] Described black filler is made through the following steps:

[0041] (1) Add 10 parts by weight of cornstarch and 20 parts by weight of microcrystalline cellulose into 100 parts by weight of water, then raise the temperature to 95° C., stir and react for 3 hours, then filter, dry, and pulverize to obtain a skeleton matrix;

[0042] (2) Add 20 parts by weight of the skeleton matrix and 40 parts by weight of nano-carbon black into 100 parts by weight of water, ultrasonically disperse, and then filter and dry to obtain the black filler.

[0043] Wherein, the particle size of the microcrystalline cellulose is 50 μm, the particle size of the skeleton matrix is ​​200 μm, and the particle size of the nano-carbon black is 30 nm.

[0044] Wherein, the oscillation frequency of the ultrasonic dispersion is 35KHz, the time is 40min, and the temperature is 50°C.

[0...

Embodiment 3

[0052] A high-gloss black PLA masterbatch, comprising the following raw materials in parts by weight:

[0053]

[0054] Described black filler is made through the following steps:

[0055] (1) Add 7 parts by weight of cornstarch and 15 parts by weight of microcrystalline cellulose to 100 parts by weight of water, then raise the temperature to 93° C., stir and react for 2.5 hours, then filter, dry, and pulverize to obtain a skeleton matrix;

[0056] (2) Add 15 parts by weight of the skeleton matrix and 30 parts by weight of nano-carbon black into 100 parts by weight of water, ultrasonically disperse, and then filter and dry to obtain the black filler.

[0057] Wherein, the particle size of the microcrystalline cellulose is 44.8 μm, the particle size of the skeleton matrix is ​​173.2 μm, and the particle size of the nano-carbon black is 25 nm.

[0058] Wherein, the oscillation frequency of the ultrasonic dispersion is 30KHz, the time is 35min, and the temperature is 45°C.

[...

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Abstract

The invention relates to the technical field of PLA, and concretely relates to a high-gloss black PLA master batch and a preparation method thereof. The high-gloss black PLA master batch comprises, byweight, 100 parts of PLA, 60-80 parts of a black filler, 6-10 parts of a surface brightener, 6-10 parts of a lubricant, 4-8 parts of an antioxidant and 1-2 parts of an ultraviolet absorber. Microcrystalline cellulose is coated with corn starch to prepare a skeleton matrix, and the skeleton matrix has the network property of the microcrystalline cellulose, can load a large amount of nanometer carbon black to effectively improve the tensile strength, impact strength and other mechanical properties of the PLA; and the corn starch has a better compatibility with the PLA than the microcrystallinecellulose in order to improve the dispersibility of the black filler in the PLA, and the corn starch can also play a role of a binder to make the nanometer carbon black bonded to the skeleton matrix,so that the nanometer carbon black is effectively loaded on the skeleton matrix, and is easy to disperse.

Description

technical field [0001] The invention relates to the technical field of PLA, in particular to a high-gloss black PLA masterbatch and a preparation method thereof. Background technique [0002] Polylactic acid (PLA) is a new type of bio-based and renewable biodegradable material, which is made from starch raw materials proposed by renewable plant resources (such as corn, cassava, etc.). The starch raw material is saccharified to obtain glucose, and then fermented by glucose and certain strains to produce high-purity lactic acid, and then synthesize polylactic acid with a certain molecular weight by chemical synthesis. It has good biodegradability. After use, it can be completely degraded by microorganisms in nature under specific conditions, and finally produces carbon dioxide and water without polluting the environment. This is very beneficial to protecting the environment and is recognized as an environmentally friendly material. [0003] CN104650549 discloses a PLA degrada...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K9/12C08K3/04C08J3/22
CPCC08J3/226C08J2467/04C08K3/04C08K9/12C08K2201/011
Inventor 王勇
Owner DONGGUAN JISHUO IND CO LTD
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