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High-content high-pigment carbon black-thermoplastic polyester master batch and preparation method thereof

A technology of high-pigment carbon black and thermoplastic polyester, which is applied in the field of polymer materials, can solve the problems of decreased physical properties of fibers, poor light resistance and heat resistance, and difficult to disperse, so as to enhance blackness and gloss, and improve dispersion. Effect, high compatibility effect

Active Publication Date: 2021-04-30
广东九彩新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyester fibers have poor dyeing performance, low color fastness, poor light resistance and heat resistance, and are prone to defects such as color difference, color spots, and color flowers.
For black masterbatches, the primary particle size of carbon black is small, and it is difficult to disperse well. It is difficult to obtain the expected gloss and blackness when adding conventional dosages. When the proportion of color masterbatches is increased, the melt fluidity will change. Poor, frequent injection head and broken filaments, physical properties of fibers decline

Method used

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  • High-content high-pigment carbon black-thermoplastic polyester master batch and preparation method thereof
  • High-content high-pigment carbon black-thermoplastic polyester master batch and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0050] 1.2 Preparation of dispersant

[0051] 1.2.1 The preparation of dispersant I comprises the following steps:

[0052] (1) Prepare the reaction raw materials according to the following parts by weight: 20 parts of stearic acid, 40 parts of caprolactone, 8 parts of trimellitic anhydride, 20 parts of succinic acid, 8 parts of dimethylol propionic acid, 10 parts of neopentyl glycol, ethylene glycol 8 parts of alcohol, 3 parts of trishydroxyethyl isocyanurate, 15 parts of diphenylmethane diisocyanate, 8 parts of N,N-dimethylaminopropylamine, 0.04 parts of tetrabutyl titanate, 80 parts of xylene;

[0053] (2) Add stearic acid, succinic acid, neopentyl glycol, ethylene glycol, trihydroxyethyl isocyanurate, 1 / 2 weight xylene and tetrabutyl titanate into the reactor, and feed The temperature was raised to 180°C with nitrogen gas, and the heat preservation reaction was carried out for 10 hours. During the reaction, water was continuously removed through the water separator; then ...

Embodiment 1

[0064] This embodiment prepares a kind of high-content high-pigment carbon black-thermoplastic polyester master batch, including the following raw materials in parts by weight: 60 parts of high-pigment carbon black, 80 parts of thermoplastic polyester, 3 parts of carbon nanofibers, 10 parts of dispersant, 5 parts of silane coupling agent, 0.9 parts of antioxidant.

[0065] The high pigment carbon black is pre-modified by ozone oxidation, the particle size is 10-25nm, and the specific surface area is 400-700m 2 / g, the oil absorption value is less than 1.5ml / g, and the volatile content reaches 4.5-6.5wt%.

[0066] The acid value of the thermoplastic polyester is 40mgKOH / g, the melt index (230°C / 2.16Kg) is 30g / 10min, and the intrinsic viscosity is 0.8dL / g.

[0067] The carbon nanofibers have a diameter of 10-20 nm and a length of 10-50 μm;

[0068] Described dispersant is dispersant I, and silane coupling agent is γ-aminopropyltriethoxysilane (KH550), and antioxidant is hinder...

Embodiment 2

[0079] This example prepares a kind of high-content high-pigment carbon black-thermoplastic polyester master batch, including the following raw materials in parts by weight: 50 parts of high-pigment carbon black, 40 parts of thermoplastic polyester, 2 parts of carbon nanofibers, 12 parts of dispersant, silane 8 parts of coupling agent, 1 part of antioxidant;

[0080] The high-pigment carbon black is pre-oxidized and modified by nitric acid, with a particle size of 10-25nm and a specific surface area of ​​400-700m 2 / g, oil absorption value <1.5ml / g, volatile matter content reaches 4.5-6.5wt%;

[0081] The acid value of the thermoplastic polyester is 50mgKOH / g, the melt index (230°C / 2.16Kg) is 25g / 10min, and the intrinsic viscosity is 0.6dL / g.

[0082]The carbon nanofibers have a diameter of 10-20 nm and a length of 10-50 μm;

[0083] The dispersant is dispersant II, the silane coupling agent is γ-glycidyl etheroxypropyl trimethoxysilane (KH560), and the antioxidant is hinder...

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Abstract

According to the high-content high-pigment carbon black-thermoplastic polyester master batch and the preparation method thereof, high-pigment carbon black with small primary particle size is selected, the hydrophilicity of the surface of the carbon black is improved through ozone or nitric acid oxidation modification of the high-pigment carbon black, and the high-pigment carbon black is matched with a silane coupling agent containing epoxy groups or amino groups in molecules for modification, and a dispersing agent with a specific structure and carbon nanofibers are used, so that the dispersity of the high-pigment carbon black in thermoplastic polyester carrier resin is improved, and the high-pigment carbon black thermoplastic polyester master batch with high blackness and high gloss is obtained by combining an internal mixer with a double-screw extrusion granulation process; and polyester fibers prepared from the high-pigment carbon black-thermoplastic polyester master batch have high mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-content high-pigment carbon black-thermoplastic polyester masterbatch and a preparation method thereof Background technique [0002] Masterbatch, also known as color masterbatch and plastic masterbatch, is a plastic colorant that is well dispersed with a high proportion of pigments or additives and thermoplastic resins; in the process of plastic product processing, compared with directly adding pigments to Said that the use of masterbatches can improve the dispersibility and tinting strength of pigments, so that the pigment particles after heating and melting can be better dispersed in plastic products, and improve the color stability of products; pigments of different colors can be produced Different color masterbatches, among which the black masterbatch is prepared from carbon black, carrier and additives. [0003] As we all know, carbon black is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L75/06C08K9/06C08K9/02C08K3/04C08K7/06C08K5/134C08J3/22
CPCC08J3/226C08J2467/00C08J2475/06C08K3/04C08K5/1345C08K7/06C08K9/02C08K9/06C08K2201/011
Inventor 林文丹曹畅吴列鵬
Owner 广东九彩新材料有限公司