A kind of polypropylene controllable rheology modifier and preparation method thereof

A rheology modifier, polypropylene technology, applied in the direction of one-component polyolefin rayon, rayon manufacturing, textile and papermaking, etc. The effect of stability

Active Publication Date: 2022-06-28
锦州英诺威科技服务有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a polypropylene controllable rheology modifier and its preparation method, which is used to solve the problem of yellowing of polypropylene spinning special materials caused by the use of phenolic antioxidants in the polypropylene controllable rheology modifier

Method used

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  • A kind of polypropylene controllable rheology modifier and preparation method thereof

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Effect test

preparation example Construction

[0029] In one embodiment of the present application, a preparation method of a polypropylene controllable rheology modifier is provided, comprising:

[0030] The polypropylene controllable rheology modifier base material is prepared, and the polypropylene controllable rheology modifier base material is put into a high-speed mixer for dry mixing. In this application, the time of the dry mixing process is 15min-30min ;

[0031] The mixed polypropylene controllable rheology modifier premix is ​​placed in a twin-screw granulator for melt extrusion and granulation to obtain a polypropylene controllable rheology modifier. The rotation speed of the screw in the pellet mill is 360r / min-600r / min, and the specific process of melt extrusion is: the temperature of the first stage to the second stage is 225°C-235°C, the temperature of the third stage to the fifth stage is 235°C-245°C, and the temperature of the sixth stage is 235°C-245°C. The temperature is 215°C-225°C, the temperature of...

Embodiment 1

[0044]

[0045] The polypropylene controlled rheology modifier base material contains the following components by mass percentage: polypropylene 60%, di-tert-butyl peroxide 15%, antioxidant s-9228 6%, FS-042 1.5% , light stabilizer 944 1%, light stabilizer 6221.5%, auxiliary antioxidant 168 8%, glycerol monostearate 3%, calcium stearate 4%.

[0046]

[0047] Put the weighed polypropylene controllable rheology modifier base material into a high-speed mixer, and dry-mix at 25°C for 20 minutes.

[0048]

[0049] Put the mixed polypropylene controllable rheology modifier premix into a twin-screw granulator with a screw length-to-diameter ratio of 42 and a screw speed of 580 r / min, melt extrusion, and pelletize to obtain controllable polypropylene. Rheology modifier, wherein, the specific process parameters of melt extrusion include: the temperature of the first stage to the second stage is 230 ° C, the temperature of the third stage to the fifth stage is 240 ° C, the tempera...

Embodiment 2

[0057] In addition to adjusting the composition and mass percentage of polypropylene controllable rheology modifier base material according to Table 1, in the process of , 0.3% of the above-mentioned polypropylene powder was added to 2000kg of polypropylene powder. Except for the polypropylene controllable rheology modifier, the rest are the same as in Example 1.

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Abstract

The application provides a polypropylene controllable rheology modifier and a preparation method thereof, wherein the polypropylene controllable rheology modifier base material contains the following components in mass percentage: polypropylene 50%-74% , peroxide 10%‑30%, non-phenolic antioxidant 5%‑10%, non-phenolic light stabilizer 2%‑7%, auxiliary antioxidant 5%‑10%, antistatic agent 2%‑5% , Acid removal agent 2%‑5%. The polypropylene controllable rheology modifier prepared by the present application is used in combination of non-phenolic antioxidant, non-phenolic light stabilizer and auxiliary antioxidant, and the solid polypropylene controllable rheology modifier prepared is found to have Unexpected effect, realize the controllable degradation of polypropylene, and improve the color stability, heat aging performance and spinnability of polypropylene spinning special materials.

Description

technical field [0001] The present application relates to the technical field of chemical materials, in particular to a polypropylene controllable rheology modifier and a preparation method thereof. Background technique [0002] In recent years, the domestic demand for special materials for polypropylene fibers has continued to grow, especially for high-fluidity polypropylene spinning products. This special polypropylene material has several advantages: good and stable fluidity, that is, the melt index is appropriately increased and The melt index is stable; the color is good, that is, the yellow index is low; the heat aging performance, that is, the melt index and yellow index are stable before and after heat aging, and the silk fabric is suitable for long-term use; At present, the special materials for polypropylene spinning on the market are generally produced by the controlled degradation method. [0003] The degradation method of polypropylene production requires the u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K5/14C08K5/524C08K5/3435C08K5/526C08K5/103C08K5/098D01F1/10D01F6/46
CPCC08L23/12C08K5/14C08K5/524C08K5/3435C08K5/526C08K5/103C08K5/098D01F1/10D01F6/46C08L2203/12C08L2201/08C08L2201/06
Inventor 朱学亮田军委苏美南刘洋
Owner 锦州英诺威科技服务有限公司
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