Polypropylene raw material mixture with fully dispersed red pigment and preparation method thereof
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A technology of pigment dispersion and polypropylene, applied in the field of polypropylene production, can solve the problems of difficult dispersion, polypropylene color difference, etc., and achieve the effect of improving dispersibility, reducing the amount of waste silk and good color.
Active Publication Date: 2019-11-29
ZHEJIANG SITONG NEW MATERIAL TECH CO LTD
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[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
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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 production, aims at solving the problem that the existing red pigment is not easy to disperse in polypropylene raw materials and causes color difference in polypropylene fiber, and provides a polypropylene raw material mixture with a fully dispersed red pigment and a preparation method thereof. The polypropylene raw material mixture comprises the following components in percentage by mass: greater than or equal to 48% of polypropylene powder, 27-30% of a red pigment, greater than or equal to 17% of polyethylene wax, 0.95-1% of an electrostatic agent, 0.05-0.1% of silicone powder and 2.5-3% of zinc stearate, the sum of the components in percentage by mass is 100%, and the softening point of the polyethylene wax is greater than orequal to 120 DEG C, during preparation, low-speed rotation mixing is performed first, and then high-speed full rotation mixing is performed. The permanent brilliant red in the polypropylene raw materials is fully dispersed, no raw powder is generated, the curing time is prolonged, and the service period of a spinning assembly is prolonged; the obtained polypropylene fiber has good color, basically no color difference occurs, and the amount of waste silk is 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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