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A kind of anti-oxidation and heat-resistant master batch for polypropylene and preparation method thereof

A technology of polypropylene and masterbatch, which is applied in the field of anti-oxidation and heat-resistant masterbatch and its preparation, can solve the problems of poor oxygen resistance and heat resistance of polypropylene plastics, and achieve the improvement of oxygen resistance and heat resistance, Increased performance retention rate and the effect of wide sources

Active Publication Date: 2017-10-10
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an anti-oxidation and heat-resistant masterbatch used in the production process of polypropylene modified plastics, which solves the shortcomings of poor oxygen resistance and poor heat resistance of the base polypropylene plastic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 90 parts of polypropylene (PP) into a high-speed mixer, stir at 60°C for 3 minutes, then add 3 parts of antioxidant 1330, 2 parts of antioxidant ST300, 3 parts of antioxidant DSTDP, 0.6 part of antioxidant 168 , 0.7 part of nucleating agent, 0.5 part of light stabilizer and 0.2 part of lubricant, mixed at high speed for 3 minutes to obtain premix, during the mixing process, the speed of high-speed mixer was 1500 rpm; then the premix was fed into the twin-screw In the extruder, preheat for 3 minutes first, then extrude, water-cool, pelletize and dry to obtain the anti-oxidation and heat-resistant masterbatch. The temperature of each section of the twin-screw extruder is 185-230°C, The rotational speed of the extruder was 350 rpm.

Embodiment 2

[0033] Add 87.5 parts of polypropylene (PP) into the high-speed mixer, stir at 65°C for 3 minutes, then add 2.5 parts of antioxidant 1330, 2.5 parts of antioxidant ST300, 5 parts of antioxidant DSTDP, 0.5 parts of antioxidant 168 , 0.8 parts of nucleating agent, 1 part of light stabilizer and 0.2 parts of lubricant, mixed at high speed for 4 minutes to obtain premixed material, and the speed of high-speed mixer in the mixing process was 1000 rpm; then the premixed material was fed into the twin-screw In the extruder, it is preheated for 5 minutes, and then extruded, water-cooled, pelletized and dried to obtain the anti-oxidation and heat-resistant masterbatch. The temperature of each section of the twin-screw extruder is 185-230° C., and the speed of the twin-screw extruder is 250 rpm.

Embodiment 3

[0035] Add 85.5 parts of polypropylene (PP) into a high-speed mixer, stir at a temperature of 80°C for 4 minutes, then add 5 parts of antioxidant 1330, 2.5 parts of antioxidant ST300, 5 parts of antioxidant DSTDP, and 0.5 parts of antioxidant 168 , 0.5 part of nucleating agent, 0.7 part of light stabilizer and 0.3 part of lubricant, mixed at high speed for 4 minutes to obtain premixed material, during the mixing process, the speed of the high-speed mixer was 1350 rpm; then the premixed material was fed into the twin-screw In the extruder, it is preheated for 3 minutes, then extruded, water-cooled, pelletized and dried to obtain the anti-oxidation and heat-resistant masterbatch. The temperature of each section of the twin-screw extruder is 185-230° C., and the speed of the twin-screw extruder is 400 rpm.

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Abstract

The invention relates to an anti-oxidation and heat-resistant masterbatch for polypropylene and a preparation method thereof, which is prepared by mixing an antioxidant, a nucleating agent, a light stabilizer and a lubricant with polypropylene as a base material. The preparation method of the anti-oxidation and heat-resistant masterbatch of the present invention is reasonable and the process is simple. The polypropylene raw material is directly added to the raw material before injection molding, mixed evenly, and a product with greatly improved oxidation resistance and heat resistance can be obtained after injection molding. Compared with direct modification on polypropylene raw materials, in order to achieve the same oxygen resistance and heat resistance, the use of anti-oxidation and heat-resistant masterbatches has the characteristics of convenience, less loss, and easy regulation.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to an oxygen-resistant and heat-resistant masterbatch for polypropylene and its preparation. Background technique [0002] Polypropylene, also known as pleated glue, has good processing properties, good bending fatigue resistance, stable chemical properties, good dielectric properties, and can withstand inorganic acids, lye, salts and many organic solvents below 80 °C Soaking, water absorption is also minimal. However, due to its molecular structure, its high-temperature rigidity is insufficient, and it is brittle at low temperature; at the same time, its environmental resistance is poor, and it is prone to oxidation, degradation, yellowing, etc. when used outdoors; Large denaturation, not resistant to long-term load and other shortcomings. [0003] At present, the solution to the heat resistance and oxidation resistance of polypropylene materials is generall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K5/00C08K5/13C08K5/372C08K5/524C08K5/053C08K5/20C08J3/22
CPCB29B9/06B29C48/92B29C2948/9258B29C2948/92704C08J3/226C08J2323/12C08J2423/12C08K5/053C08K5/13C08K5/20C08K5/372C08K5/526C08K2201/014C08L23/12C08L2201/08C08L2205/025
Inventor 杨桂生康克琪
Owner HEFEI GENIUS NEW MATERIALS
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