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A kind of high pigment carbon black-polyamide color masterbatch and preparation method thereof

A technology of high-pigment carbon black and polyamide, which is applied in the field of polymer materials, can solve the problems of product gloss and color fastness, and reduce the dispersion effect of carbon black, achieve high compatibility, reduce alkalinity, and enhance black effect of gloss and gloss

Active Publication Date: 2021-08-24
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

In order to improve the dispersion of carbon black in the carrier resin, the current general technology is to add a higher content of polyethylene wax, EBS and other low-molecular lubricants to the color masterbatch. However, the carbon black masterbatch with polyethylene as the matrix resin When coloring polyamide materials, due to the compatibility of the matrix resin, the dispersion effect of carbon black in the final product is reduced, and the gloss and color fastness of the product are affected

Method used

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  • A kind of high pigment carbon black-polyamide color masterbatch and preparation method thereof
  • A kind of high pigment carbon black-polyamide color masterbatch and preparation method thereof
  • A kind of high pigment carbon black-polyamide color masterbatch and preparation method thereof

Examples

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Effect test

preparation example Construction

[0046] 1.2 Preparation of dispersant

[0047] Bisphenol A dimethacrylate or bisphenol A glycidyl dimethacrylate monomer, acrylamide monomer, and acrylate monomer are in molar ratio (1-3): (2-5): (6-8) Put it into the reactor, feed N2, heat to 130-140°C for bulk polymerization, and the reaction time is 30-120min to prepare the dispersant.

[0048] The specific method is as follows:

[0049] 1.2.1 Add bisphenol A dimethacrylate, N-hydroxyhexylmethacrylamide, and diethylaminopropyl acrylate into the reactor according to the molar ratio of 2:5:6, feed N2, and heat to 130°C Carry out bulk polymerization, the reaction time is 60min, can prepare dispersant I, weight-average molecular weight 6340.

[0050] 1.2.2 Bisphenol A dimethacrylate glycidyl ester monomer, N-heptylacrylamide, and acrylate monomer (R3 is methyl, R4 and R5 are phenyl) according to the molar ratio of 1:3: 6. Put it into the reactor, feed N2, heat to 140°C for bulk polymerization, and the reaction time is 70 minu...

Embodiment 1

[0054] The present embodiment prepares a kind of high-pigment carbon black-polyamide color masterbatch, comprises the raw material of following weight portion: 80 parts of high-pigment carbon black; 80 parts of polyamide resins; 10 parts of dispersants; 5 parts of silane coupling agents; 0.8 parts of oxygen agent; the polyamide resin is PA66, the dispersant is dispersant I, and the silane coupling agent is γ-aminopropyltriethoxysilane (KH550).

[0055] The preparation method comprises the following steps:

[0056] (1) material preparation

[0057] Take each raw material according to the following parts by weight, 80 parts of high pigment carbon black; 80 parts of polyamide resin; 10 parts of dispersant; 5 parts of silane coupling agent; 0.8 part of antioxidant;

[0058] (2) High pigment carbon black modification

[0059] Mix high-pigment carbon black and silane coupling agent evenly, and ball mill at 0-10°C for 40 minutes to prepare high-pigment carbon black modified by sila...

Embodiment 2

[0065] The present embodiment prepares a kind of high-pigment carbon black-polyamide color masterbatch, comprises the raw material of following weight portion: 40 parts of high-pigment carbon black; 100 parts of polyamide resins; 5 parts of dispersants; 3 parts of silane coupling agents; 0.6 parts of oxygen agent; the polyamide resin is PA46, the dispersant is dispersant II, and the silane coupling agent is γ-glycidyl etheroxypropyl trimethoxysilane (KH560).

[0066] The preparation method comprises the following steps:

[0067] (1) material preparation

[0068] Take each raw material according to the following parts by weight, 40 parts of high pigment carbon black; 100 parts of polyamide resin; 5 parts of dispersant; 3 parts of silane coupling agent; 0.6 part of antioxidant;

[0069] (2) High pigment carbon black modification

[0070] Mix high-pigment carbon black and silane coupling agent evenly, and ball mill at 0-10°C for 20 minutes to prepare high-pigment carbon black m...

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Abstract

The invention provides a high-pigment carbon black-polyamide color masterbatch and a preparation method thereof. The high-pigment carbon black with a small primary particle size is selected, and the affinity of the surface of the carbon black is improved by ozone or nitric acid oxidation modification of the high-pigment carbon black. Water-based, with the modification of silane coupling agents containing epoxy or amino groups in the molecule, and the use of specific structure dispersants to improve the dispersion of high-pigment carbon black in polyamide carrier resin, combined with internal mixer and twin-screw The extrusion granulation process realizes high-pigment carbon black-polyamide masterbatch with high blackness and high gloss, and the hue of the high-pigment carbon black-polyamide masterbatch and the products prepared are all blue.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-pigment carbon black-polyamide masterbatch and a preparation method thereof. Background technique [0002] Masterbatch is a new type of special colorant for polymer materials, usually composed of three substances: pigment, carrier resin and additives, used for dyeing plastic products. Among them, black masterbatch is the most commonly used color masterbatch in plastic processing, and carbon black is a more commonly used black pigment. [0003] As we all know, carbon black is a kind of nanometer material, the primary particle size is generally between 15-120nm, it has the characteristics of small particle size, high specific surface area, high oil absorption, etc., and it is difficult to disperse in the carrier resin. Among them, the smaller the primary particle size of carbon black, the higher the content of carbon black, the better the dispersibilit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L33/14C08L33/04C08K9/06C08K9/02C08K3/04C08J3/22
CPCC08J3/226C08J2433/04C08J2433/14C08J2477/06C08K3/04C08K9/02C08K9/06
Inventor 林文丹吴列鵬曹畅
Owner 广东九彩新材料有限公司
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