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A kind of polypropylene raw material with fully dispersed red pigment and its preparation method

A pigment dispersion and polypropylene technology, which is applied in the field of polypropylene production, can solve the problems of polypropylene fiber color difference and difficult dispersion, and achieve the effects of reducing the amount of waste silk, improving the service cycle, and prolonging the high-speed mixing time and curing time.

Active Publication Date: 2022-02-11
ZHEJIANG SITONG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the existing red pigment is not easy to disperse in the polypropylene raw material mixture, which causes the color difference of the polypropylene fiber, the purpose of the present invention is to provide a polypropylene raw material mixture in which the red pigment is fully dispersed, which can be combined with the existing polypropylene raw material mixture. Compared with the formula, the dispersion effect of red pigment is improved, and the quality and processing cost of polypropylene fiber are also improved

Method used

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  • A kind of polypropylene raw material with fully dispersed red pigment and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A polypropylene raw material mixture with fully dispersed red pigment, which is composed of the following components in mass percentage: MFI20 polypropylene powder 49.97%, permanent bright red pigment 27.99%, BASF PE2 polyethylene wax 18.19%, stearic acid Zinc 2.80%, electrostatic agent 0.98%, silicone powder 0.07%.

[0029] The preparation method of the polypropylene raw material mixture that above-mentioned red pigment is fully dispersed comprises the following steps:

[0030] (1) Add each raw material in the mixer in turn, start the mixer, keep the mixer rotating and mixing at low speed, the rotating speed is 200 rpm, and the running time is 5 minutes;

[0031] (2) Then increase the speed of the mixer to 1500 rpm and rotate for 15 minutes to fully mix the materials;

[0032] (3) Reduce the mixer to a low-speed rotation state of 200 rpm and rotate for 7 to 8 seconds to mature the material, and release the material completely to obtain the polypropylene raw material m...

Embodiment 2

[0035] A polypropylene raw material mixture in which the red pigment is fully dispersed, its preparation method is the same as that of Example 1, the difference is that it consists of the following components in mass percentage: 48% of MFI20 polypropylene powder, permanent brilliant red pigment 30%, BASF PE2 Polyethylene Wax 18%, Static Agent 0.95%, Silicone Powder 0.05%, and Zinc Stearate 3%.

Embodiment 3

[0037] A polypropylene raw material mixture in which the red pigment is fully dispersed, its preparation method is the same as that of Example 1, the difference is that it consists of the following components in mass percentage: 49.5% of MFI20 polypropylene powder, permanent brilliant red pigment 28.4%, BASFPE2 polyethylene wax 18.5%, static agent 1%, silicone powder 0.1%, and zinc stearate 2.5%.

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Abstract

The invention belongs to the technical field of polypropylene fiber production. Aiming at the problem that the existing red pigment is not easily dispersed in the polypropylene raw material mixture, which causes the color difference of the polypropylene fiber, the invention provides a polypropylene raw material mixture in which the red pigment is fully dispersed and a preparation method, which consists of the following The composition of each component in mass percentage: polypropylene powder ≥ 48%, red pigment 27-30%, polyethylene wax ≥ 17%, electrostatic agent 0.95-1%, silicone powder 0.05-0.1% and zinc stearate 2.5% ~3%, the sum of the mass percentages of the above-mentioned components is 100%, the softening point of polyethylene wax is ≥120°C, first rotate and mix at low speed during preparation, and then fully rotate and mix at high speed. The permanent brilliant red in the polypropylene raw material is fully dispersed, no raw powder is produced, the aging time is prolonged, and the service life of the spinning assembly is improved. The color of the obtained polypropylene fiber is good, there is basically no color difference, and the amount of waste yarn is also greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of polypropylene fiber production, and in particular relates to a polypropylene raw material mixture with fully dispersed red pigment and a preparation method. Background technique [0002] Polypropylene is a polypropylene fiber made of polypropylene resin through melt spinning. It has the characteristics of light texture, straight and smooth, high strength, non-hygroscopic, and strong acid and alkali resistance. However, the dyeability of polypropylene is poor. At present, colored polypropylene is mainly prepared by adding pigments to polypropylene raw materials and spinning. However, if the color is not sufficiently dispersed in the polypropylene raw material, it will not only cause color difference in polypropylene, but also affect the quality of polypropylene. [0003] At present, it is recognized in the field that red pigments are not easy to disperse in polypropylene raw materials, and the commonly us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/06C08K5/098C08J3/20D01F1/04D01F6/46B29B7/28
CPCC08J3/203D01F1/04D01F6/46B29B7/28C08J2323/12C08J2423/06
Inventor 张喜龙
Owner ZHEJIANG SITONG NEW MATERIAL TECH CO LTD
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