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Anti-adhesion and slipping agent master batch and preparation method thereof

A slip agent and anti-blocking agent technology, which is applied in the field of anti-opening slip agent masterbatch and its preparation, can solve the problems of easy crystal point, irregular particle shape, easy water absorption, etc., and achieve low friction coefficient, excellent anti-opening performance, The effect of low risk of precipitation

Inactive Publication Date: 2017-06-13
SHANGHAI WEIKAI CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current inorganic anti-blocking agent talcum powder, diatomaceous earth, etc. are processed by a series of grinding of natural minerals, the shape of the particles is irregular, the opening effect is poor, and the haze and transparency of the film are greatly affected; The effect of silicon opening is better, but because of its light specific gravity, it is difficult to disperse in the production process, it is easy to absorb water during storage, and it is easy to produce crystal points when blowing the film, which affects the appearance of the film

Method used

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  • Anti-adhesion and slipping agent master batch and preparation method thereof

Examples

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Effect test

Embodiment 1

[0022] A high-efficiency open-smooth masterbatch, its components are proportioned by mass percentage: 88% of linear low-density polyethylene with a melting index of 2g / 10min, 5% of spherical silica-alumina, 5% of erucamide, and number-average molecular weight 2% for 3000 Polyethylene Wax.

[0023] The preparation method comprises the following steps: adding linear low-density polyethylene, spherical silica alumina, erucamide, and polyethylene wax into a high-speed mixer and stirring at a low speed for 5 minutes, sending the mixture into a twin-screw extruder for melting and blending, and passing The shearing and mixing of the screw make the filler uniformly dispersed in the carrier resin, and then extrude, cool, dry, pelletize and pack to obtain the product of the invention. The temperature distribution of the twin-screw extruder is: from the feed section to the head: 90°C, 150°C, 170°C, 175°C, 180°C, 180°C, 170°C and 170°C, and the head temperature is 170°C °C; the feeding s...

Embodiment 2

[0025] A high-efficiency open-smooth masterbatch, its components are proportioned by mass percentage: 83% of linear low-density polyethylene with a melting index of 7g / 10min, 6% of spherical silica-alumina, 8% of erucamide, and number-average molecular weight 3000 Polyethylene Wax 3%.

[0026] The preparation method comprises the following steps: adding linear low-density polyethylene, spherical silica alumina, erucamide, and polyethylene wax into a high-speed mixer and stirring at a low speed for 5 minutes, sending the mixture into a twin-screw extruder for melting and blending, and passing The shearing and mixing of the screw make the filler uniformly dispersed in the carrier resin, and then extrude, cool, dry, pelletize and pack to obtain the product of the invention. The temperature distribution of the twin-screw extruder is: from the feed section to the head: 80°C, 140°C, 160°C, 165°C, 170°C, 170°C, 160°C and 160°C, and the head temperature is 160°C ℃; the feeding screw ...

Embodiment 3

[0028] A high-efficiency open-smooth masterbatch, its components are proportioned by mass percentage: 83% of linear low-density polyethylene with a melt index of 20g / 10min, 5% of spherical silica-alumina, 10% of oleic acid amide, and number-average molecular weight 2% for 3000 Polyethylene Wax.

[0029] The preparation method comprises the following steps: adding linear low-density polyethylene, spherical silica-alumina, oleic acid amide, and polyethylene wax into a high-speed mixer and stirring at a low speed for 5 minutes, sending the mixture into a twin-screw extruder for melting and blending, passing The shearing and mixing of the screw make the filler uniformly dispersed in the carrier resin, and then extrude, cool, dry, pelletize and pack to obtain the product of the invention. The temperature distribution of the twin-screw extruder is: from the feed section to the head: 80°C, 130°C, 150°C, 155°C, 160°C, 160°C, 150°C and 150°C, and the head temperature is 150°C ℃; the f...

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Abstract

The invention discloses an anti-adhesion and slipping agent master batch and a preparation method thereof. The formula of the anti-adhesion slipping agent master batch is prepared from 75 to 85 percent of carrier resin, 5 to 10 percent of an anti-adhesion agent, 5 to 10 percent of a slipping agent and 1 to 5 percent of a dispersing agent, wherein the anti-adhesion agent is spherical silicon aluminum oxide with the particle size of 5 to 10 [mu]m; the slipping agent is one or two of erucyl amide and oleamide; the dispersing agent is polyethylene wax with the number-average molecular weight of 3,000 to 5,000. The master batch is produced according to a conventional blending double-screw granulation process. The anti-adhesion and slipping agents in the anti-adhesion and slipping agent master batch are excellent in anti-adhesion performance, so that the friction coefficient of a thin film can be effectively reduced; the thin film is high in transparency and low in fuzzy degree; furthermore, the slipping agent is difficult to separate out.

Description

technical field [0001] The invention relates to a masterbatch of an anti-opening slip agent and a preparation method thereof, belonging to the technical field of anti-opening agents. Background technique [0002] Polyolefin film is widely used in food packaging, medical packaging, stationery packaging and agricultural film packaging. However, a vacuum is formed during the film blowing process, and the polymers between the two layers of film are entangled with each other. The film is easy to stick and difficult to open. In order to prevent this phenomenon, a certain opening slip agent is usually added to the plastic film. Common anti-blocking agents are inorganic talcum powder, diatomaceous earth, synthetic silica, etc. The principle is to form many fine and hard protrusions on the surface of the film, so that the external air can easily enter between the two layers of film and avoid the gap between the two layers. A vacuum is formed between the bonded films, thereby prevent...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08K7/18C08K5/20C08J3/22B29C47/92B29C48/92
CPCC08L23/0815B29C48/92B29C2948/9258B29C2948/92704C08J3/226C08J2423/08C08K2201/003C08K2201/014C08L2201/10C08L2203/16C08L23/06C08K7/18C08K5/20
Inventor 虞明东朱昌明牛辉楠
Owner SHANGHAI WEIKAI CHEM
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