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Preparation method and application of oxygen-barrier plastic film

A plastic film and oxygen barrier technology, applied in the field of plastic materials, can solve the problems of poor oxygen barrier properties and unfavorable long-term storage of packaging, and achieve the effects of improved performance, good application prospects and low oxygen transmission rate

Inactive Publication Date: 2018-11-30
方金婷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its main disadvantage is its poor barrier to oxygen, which is not conducive to the long-term storage of packaging.

Method used

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  • Preparation method and application of oxygen-barrier plastic film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Grind 8 parts of kaolin, 4 parts of cellulose whiskers, and 2 parts of antimony trioxide respectively, the grinding is carried out in a screw grinder, and the filling rate of the material to be ground in the grinding tank is 60%; grinding The inverter frequency of the machine is 30Hz, and the grinding time is 4 hours. After the grinding is completed, the grinding materials are combined, and then 18 parts of dodecyl mercaptan and 15 parts of monoalkoxy titanate are added to the mixer together, and the mixture is mixed at 95 Stir at ℃ for 15 minutes, and obtain mixture A after natural cooling;

[0020] (2) Add 50 parts of low-density polyethylene and 35 parts of ethyl acetyl monoglyceride into an ultrasonic disperser for ultrasonic dispersion. The ultrasonic power is 250W, the ultrasonic dispersion time is 20 minutes, and the ultrasonic dispersion temperature is 90°C. Then add 16 parts of ethylene-octene copolymer, 12 parts of glyceryl monostearate, adjust the ultraso...

Embodiment 2

[0025] (1) Grind 9 parts of kaolin, 4.5 parts of cellulose whiskers, and 3 parts of antimony trioxide respectively, the grinding is carried out in a screw grinder, and the filling rate of the material to be ground in the grinding tank is 70%; grinding The inverter frequency of the machine is 35Hz, and the grinding time is 5 hours. After the grinding is completed, the grinding materials are combined, and then 20 parts of dodecyl mercaptan and 17.5 parts of monoalkoxy titanate are added to the mixer together. Stir at ℃ for 17.5 minutes, and obtain mixture A after natural cooling;

[0026] (2) Add 55 parts of low-density polyethylene and 40 parts of ethyl acetyl monoglyceride into an ultrasonic disperser for ultrasonic dispersion. The ultrasonic power is 275W, the ultrasonic dispersion time is 25 minutes, and the ultrasonic dispersion temperature is 100°C. Then add 18 parts of ethylene-octene copolymer, 13 parts of glyceryl monostearate, adjust the ultrasonic power to 365W, the u...

Embodiment 3

[0031] (1) Grind 10 parts of kaolin, 5 parts of cellulose whiskers, and 4 parts of antimony trioxide respectively, and the grinding is carried out in a screw grinder, and the filling rate of the material to be ground in the grinding tank is 80%; grinding The inverter frequency of the machine is 40Hz, and the grinding time is 6 hours. After the grinding is completed, the grinding materials are combined, and then 22 parts of dodecyl mercaptan and 20 parts of monoalkoxy titanate are added to the mixer together. Stir at ℃ for 20 minutes, and obtain mixture A after natural cooling;

[0032](2) Add 60 parts of low-density polyethylene and 45 parts of ethyl acetyl monoglyceride into an ultrasonic disperser for ultrasonic dispersion. The ultrasonic power is 300W, the ultrasonic dispersion time is 30 minutes, and the ultrasonic dispersion temperature is 110°C. Then add 20 parts of ethylene-octene copolymer, 14 parts of glyceryl monostearate, adjust the ultrasonic power to 380W, the ult...

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Abstract

The invention discloses a preparation method and application of an oxygen-barrier plastic film. The method comprises the steps: grinding kaoline, cellulose whiskers and antimonous oxide, adding laurylmercaptan and monoalkoxy titantate, and carrying out stirring at high temperature to obtain a mixture A; carrying out ultrasonic dispersion on low-density polyethylene and acetylated monoglyceride, then, adding ethylene-octene copolymer and glyceryl monostearate, and carrying out ultrasonic treatment again to obtain a mixture B; then, heating and stirring the mixture A and the mixture B in a reaction kettle, regulating the pH value, then, adding 3-aminopropyltriethoxysilane and sodium laurylsulfate, and carrying out further heating and stirring; and next, mixing the obtained acid heat modified mixture with a plasticizer and an anti-aging agent, carrying out extruding blow molding by a circular-opening die head of a double-screw extruder, and carrying out traction cooling to obtain the plastic film. The prepared plastic film is low in oxygen transmission rate, and as a gas barrier packaging material, the plastic film has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of plastic materials, in particular to a preparation method and application of an oxygen barrier plastic film. Background technique [0002] With the continuous development of industry, plastics are used more and more widely. Polyethylene, polypropylene, PTT polyester, ABS, etc. are widely used in water-saving irrigation, construction, interior decoration, furniture, electricity, transportation and other industries. Plastic film is a common daily necessities for people nowadays. Plastic film has the advantages of good transparency, good moisture resistance, excellent heat resistance, convenient use, and low price, and is widely used in various industries. Low-density polyethylene film is currently the most widely used plastic packaging film with the largest consumption, accounting for more than 40% of the consumption of plastic packaging film. Low-density polyethylene film is a translucent, glossy, soft fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L1/02C08K13/02C08K3/34C08K3/22C08K5/103C08K5/544C08J5/18B65D65/38
CPCB65D65/38C08J5/18C08J2323/06C08J2423/08C08K3/2279C08K3/346C08K5/103C08K5/544C08K13/02
Inventor 方金婷
Owner 方金婷