Plastic masterbatch for starch-based degradable packaging film and preparation method of plastic masterbatch

A technology of plastic masterbatch and packaging film, applied in the field of plastic packaging film, can solve the problems of poor water resistance, affecting the development and application of starch-based degradable plastics, etc., to improve heat resistance, improve subsequent water resistance, and broaden the processing temperature range. Effect

Active Publication Date: 2019-06-11
山东壹贰叁塑胶有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, starch-based degradable plastics that are widely used are prone to thermal degradation during processing, and there is a problem of poor water resistance in the later stage, which affects the development and applicati

Method used

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  • Plastic masterbatch for starch-based degradable packaging film and preparation method of plastic masterbatch

Examples

Experimental program
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Example Embodiment

[0031] Example 1

[0032] (1) The starch is fully dried and then ground to particles with a particle size of 30μm, then titanate coupling agent and alcohol solution are added to disperse uniformly, then inorganic porous microspheres are added, and ultrasonic dispersion treatment is carried out to make the starch particles load on the inorganic porous In the pores of the microspheres, the temperature is finally heated to 60°C and dried to obtain inorganic porous microspheres loaded with starch particles;

[0033] The starch is corn starch; the titanate coupling agent is isopropyl triisostearoyl titanate; the inorganic porous microspheres are porous glass microspheres; in the alcohol solution, the mass of alcohol is 70% of the mass of water, among which, alcohol It is methanol; the ultrasonic frequency of ultrasonic dispersion treatment is 28kHz, and the power density is 0.32W / cm 2 , Time is 75min; each raw material component is, in terms of mass fraction, starch 12%, titanate coupli...

Example Embodiment

[0039] Example 2

[0040] (1) The starch is fully dried and then ground to a particle size of 70μm, then titanate coupling agent and alcohol solution are added to disperse evenly, then inorganic porous microspheres are added, and ultrasonic dispersion treatment is carried out to make the starch particles load on the inorganic porous In the pores of the microspheres, the temperature is finally heated to 60°C and dried to obtain inorganic porous microspheres loaded with starch particles;

[0041] The starch is tapioca starch; the titanate coupling agent is isopropyl tris(dioctyl phosphate acyloxy) titanate; the inorganic porous microspheres are spherical diatoms; in the alcohol solution, the alcohol quality is 80% of the water quality %, where alcohol is ethanol; the ultrasonic frequency of ultrasonic dispersion treatment is 35kHz, and the power density is 0.38W / cm 2 , Time is 65min; each raw material component is, in terms of mass fraction, starch 17%, titanate coupling agent 3%, al...

Example Embodiment

[0047] Example 3

[0048] (1) The starch is fully dried and then ground to particles with a particle size of 80μm, then titanate coupling agent and alcohol solution are added to disperse evenly, and then inorganic porous microspheres are added, and ultrasonic dispersion treatment is carried out to make the starch particles load on the inorganic porous In the pores of the microspheres, the temperature is finally heated to 60°C and dried to obtain inorganic porous microspheres loaded with starch particles;

[0049] The starch is rice starch; the titanate coupling agent is bis(dioctyloxy pyrophosphate) ethylene titanate ; the inorganic porous microspheres are porous ceramic microspheres; in the alcohol solution, the quality of the alcohol is the quality of water 90%, of which alcohol is ethylene glycol; the ultrasonic frequency of ultrasonic dispersion treatment is 35kHz, and the power density is 0.4W / cm 2 , Time is 60min; each raw material component is, in terms of mass fraction, sta...

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Abstract

The invention relates to the field of plastic packaging films, and discloses a plastic masterbatch for a starch-based degradable packaging film and a preparation method of the plastic masterbatch. Thepreparation method comprises the following preparation process: (1) mixing starch microparticles, a titanate coupling agent, an alcohol solution and inorganic porous microspheres, and conducting ultrasonic dispersion to obtain inorganic porous microspheres loaded with the starch microparticles; (2) adding the inorganic porous microspheres into silica hydrogel for immersion treatment, and conducting drying to obtain a modified starch filler; and (3) conducting mixing extrusion granulation on polyethylene, an ethylene-acrylic acid copolymer, an ethylene-vinyl alcohol copolymer, hydroxymethyl cellulose, nano calcium carbonate, a plasticizer and the modified starch filler, so as to obtain the plastic masterbatch for the starch-based degradable packaging film. The plastic masterbatch preparedby the invention improves the heat resistance of the starch, broadens the processing temperature range, reduces the temperature sensitivity, the starch has good fluidity in a matrix, also moisture isprevented from making contact with the starch, and the later-stage water resistance is improved.

Description

technical field [0001] The invention relates to the field of plastic packaging films, and discloses a plastic masterbatch for starch-based degradable packaging films and a preparation method. Background technique [0002] With the rapid development of the plastics industry, plastic products are widely used at one time, resulting in serious pollution to the environment, that is, plastics are not easy to decompose and not easy to recycle. The huge amount of pollution has caused the consequences of destroying the ecological balance. Therefore, degradable plastics with degradability have attracted widespread attention because they will not bring harmful products after degradation and will not pollute the ecological environment. [0003] At present, degradable plastics mainly include: (1) biodegradable synthetic polymer materials; (2) biodegradable polyester plastics; (3) starch, cellulose and lignin using polysaccharides in plants etc. Chitosan, polyglucosamine, animal glue an...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08L1/28C08L3/02C08K13/06C08K9/02C08K7/28C08K3/26C08K5/12C08K7/26C08K7/24C08J3/22C08J5/18
Inventor 陈庆昝航
Owner 山东壹贰叁塑胶有限公司
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