Anti-tiger wrinkle toughening master batch and preparation method thereof

A toughening masterbatch and anti-tiger grain technology, applied in the field of polymer modification, can solve the problems of affecting the appearance of parts, poor impact performance of polypropylene, and the application range of limit polypropylene materials, etc., to achieve high toughening efficiency , avoid extremes, and improve the effect of production stability

Pending Publication Date: 2021-02-05
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the impact performance of polypropylene is poor. In the application of products with high impact requirements, it is often necessary to add a large amount of elastomer to improve its toughness.
However, at the same time of toughening, light and dark stripes often appear in the injection molding process of some large thin-walled parts, which are called "tiger skin patterns", which greatly affect the appearance of the part, and limit the application range of polypropylene materials.

Method used

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  • Anti-tiger wrinkle toughening master batch and preparation method thereof
  • Anti-tiger wrinkle toughening master batch and preparation method thereof

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preparation example Construction

[0032] A preparation method for anti-tiger grain toughening masterbatch, comprising the following steps:

[0033] 1. Mixing

[0034] Add the above-mentioned raw materials in parts by mass into an internal mixer for mixing and banburying to obtain a blend. The banburying temperature is controlled at 185-225°C, the banburying time is controlled at 10-20min, and the banburying speed is controlled at 50- 100r / min;

[0035] 2. Granulation extrusion

[0036] Pour the blend produced in step 1 into a two-way screw extruder for extrusion and granulation, extrude the strip-shaped blend, pass the strip-shaped blend into the water tank for cooling, and enter the pelletizer after cooling to cut into resistant Tiger skin pattern toughened masterbatch particles, extrusion process parameters: extrusion temperature 190-230°C, extruder speed 500-800r / min, water tank temperature control 20-50°C;

[0037] 3. Sealed storage

[0038] Dry the masterbatch made in step 2 at 100°C for 6 hours, and ...

Embodiment 1

[0040] The anti-tiger grain toughening masterbatch is prepared according to the above method, and the masterbatch is added to the plastic when producing the plastic. Among them, when the anti-tiger grain toughening masterbatch is produced, the mass fraction of the toughening agent accounts for 40% of the total raw materials. When the anti-tiger grain toughening masterbatch is added to the plastic, the anti-tiger grain toughening masterbatch The mass fraction of pellets is 37.5% of the total amount of plastic.

Embodiment 2

[0042] The anti-tiger grain toughening masterbatch is prepared according to the above method, and the masterbatch is added to the plastic when producing the plastic. Among them, when the anti-tiger grain toughening masterbatch is produced, the mass fraction of the toughening agent accounts for 50% of the total raw materials. When the anti-tiger grain toughening masterbatch is added to the plastic, the anti-tiger grain toughening masterbatch The mass fraction of pellets is 30% of the total amount of plastic.

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Abstract

The invention relates to the field of polymer modification, and in particular, relates to an anti-tiger wrinkle toughening master batch and a preparation method thereof. The invention discloses the anti-tiger wrinkle toughening master batch. The toughening master batch comprises the preparation raw materials in parts by weight: 37-69 parts of first-class polypropylene, 10-20 parts of second-classpolypropylene, 20-40 parts of a toughening agent, 0.5-1.5 parts of a processing aid and 0.5-1.5 parts of an antioxidant. The preparation method comprises the following steps: adding the raw materialsinto an internal mixer, and mixing and banburying to obtain a blend; pouring the blend into a two-way screw extruder, carrying out extrusion granulation, extruding a strip-shaped blend, introducing the strip-shaped blend into a water tank, cooling, after cooling, entering a granulator, cutting the strip-shaped blend into anti-tiger wrinkle toughening master batch particles; and drying the preparedmaster batch, sealing and packaging. The toughening master batch provided by the invention is simple in preparation method and convenient to operate, and can be used instead of a traditional toughening master batch; meanwhile, the toughening master batch is good in compatibility with a plastic product, high in toughening efficiency and resistant to tiger wrinkles.

Description

technical field [0001] The invention relates to the field of polymer modification, in particular to an anti-tiger grain toughening masterbatch and a preparation method thereof. Background technique [0002] Due to its excellent performance, polypropylene is widely used in automobiles, home appliances, pipes, packaging and other fields. However, the impact performance of polypropylene is poor. In the application of products with high impact requirements, it is often necessary to add a large amount of elastomer to improve its toughness. However, at the same time of toughening, light and dark stripes often appear in the injection molding process of some large thin-walled parts, which are called "tiger skin patterns", which greatly affect the appearance of the part and limit the application range of polypropylene materials. [0003] In order to meet the requirements of thinning and toughening and avoid the appearance of "tiger skin grain" defects, it is necessary to add anti-ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/12C08L23/08C08L23/26C08J3/22
CPCC08J3/226C08J2423/14C08J2423/12C08J2423/08C08J2423/26
Inventor 闫溥罗鹏邵之杰王灿耀周海
Owner ORINKO NEW MATERIAL CO LTD
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