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Preparation method for white polyester master batches

A technology of polyester and master batch, applied in the field of preparation of white polyester master batch, can solve the problems of uneven pigment dispersion, high production cost, complicated production process, etc., and achieves improved dispersion uniformity, low production cost and convenient manufacturing. grain effect

Active Publication Date: 2013-04-24
HEFEI LUCKY SCI & TECH IND +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following defects: (1) The carrier resin needs to be melted again, the production process is complicated, and the production cost is high; (2) Due to the high viscosity of the resin used as the carrier, the dispersion of the pigment in the resin is uneven, resulting in the color masterbatch The quality of the material is uneven, which affects the uniformity of the color of the white polyester film; (3) The viscosity of the carrier resin will decrease after melting, and the final viscosity of the color masterbatch will also vary with the amount of pigment added. , resulting in difficulty in controlling the final viscosity of the color masterbatch

Method used

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  • Preparation method for white polyester master batches

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Experimental program
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Effect test

Embodiment 1

[0039] (1) Inorganic surface treatment: The surface of titanium dioxide with a particle size of about 350nm is coated with a silicon-aluminum binary coating with a thickness of about 10nm.

[0040] The dispersant sodium hexametaphosphate was added to the titanium dioxide slurry with a mass fraction of 20% to 30%, and the pH value of the solution was adjusted to about 9.5 for pre-dispersion. Under the condition of 85-90°C, the mass ratio of silica and pigment is controlled to be 1%-5%, the pH of the solution is adjusted to 8.5 with sodium silicate, and the silicon-coated film is completed by aging for 2 h; on this basis, Maintain the temperature at about 70°C and the pH value at about 8.5, add aluminum sulfate and dilute sodium hydroxide, and control the stoichiometry of aluminum sulfate at a mass ratio of aluminum oxide to titanium dioxide of 3% to 7%. Adjust the pH of the slurry to 7.0 with aluminum sulfate, age for 4 h, wash with water until there is no sulfate ion, filter, ...

Embodiment 2～12

[0046] With a method similar to Example 1, according to the pigment type, pigment particle size, pigment addition amount, inorganic coating layer type, inorganic coating layer thickness, coupling agent surface treatment agent type, and adding pigment described in Table 1 are The viscosity of the system can be used to prepare white masterbatches with different viscosities.

[0047] Table 1: The material consumption data table of each embodiment

[0048]

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Abstract

The invention relates to a preparation method for white polyester master batches. The preparation method comprises the following steps of (1) performing surface treatment on a pigment; a, performing inorganic surface treatment on the pigment; and b, performing coupling agent surface treatment on the pigment; (2) esterifying; (3) performing polycondensation; and (4) pelleting. According to the preparation method, resin is not required to be subjected to secondary smelting; the process is simple, and the production cost is low; and the dispersion uniformity of the pigment in polyester is improved, and the final viscosity of the color master batches can be more convenient to control by performing the inorganic surface treatment and the coupling agent surface treatment on the pigment and controlling system viscosity during adding the pigment and the system viscosity during terminating the polycondensation.

Description

technical field [0001] The invention relates to a preparation method of a polyester masterbatch, in particular to a preparation method of a white polyester masterbatch. Background technique [0002] As an important method of producing white polyester film, the method of directly adding white masterbatch has its unique advantages compared with the coating method and dyeing method, which can not only reduce the process and production cost; reduce the environmental impact caused by the use of dye Pollution; there is basically no need to consider the adhesion fastness between the dye (pigment) material and the base film that must be paid attention to in the coating method or dyeing method. [0003] Color masterbatch is mainly composed of pigment and resin as a carrier. At present, the preparation of masterbatch is usually prepared by melting and regranulating, that is, pigments, additives and resin as a carrier are mixed at the melting temperature, and after extrusion, Granulat...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K9/06C08K9/10C08K3/22C08K3/30C08K3/26C08G63/183C08J3/22
Inventor 童晨高青王旭亮周通程龙宝张希堂
Owner HEFEI LUCKY SCI & TECH IND