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Preparation method of lycopodium powder modified starch-polypropylene waterproof composite material

A composite material, polypropylene technology, applied in the field of polymer packaging material preparation, can solve problems such as inability to use, and achieve the effect of good hydrophobicity

Pending Publication Date: 2022-04-26
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When polypropylene starch composite material is used as a material for making disposable tableware, it is usually required to have a certain degree of water resistance, so as to prevent the disposable tableware made from it from being unusable due to water absorption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A kind of preparation method of lycopodium powder modified starch-polypropylene waterproof composite material of the present embodiment comprises the following steps:

[0017] The first step, according to the mass ratio, starch: glycerin: lycopodium powder: coupling agent = 100: 50: 10: 2, after weighing the above components, first add starch and glycerin to the internal mixer and knead evenly, and then Add lycopodium powder and coupling agent to knead evenly to obtain lycopodium starch compound;

[0018] In the second step, according to the mass ratio, polypropylene: lycopodium starch composite material = 100: 100, the above-mentioned weighed raw materials are added to the mixer and mixed evenly to obtain a mixture, and then the mixture is added to the twin-screw extruder to melt Blending and extruding to obtain the lycopodium powder modified starch-polypropylene waterproof composite material.

[0019] The coupling agent described in the first step is a silane couplin...

Embodiment 2

[0021] A kind of preparation method of lycopodium powder modified starch-polypropylene waterproof composite material of the present embodiment comprises the following steps:

[0022] The first step, according to the mass ratio, starch: glycerin: lycopodium powder: coupling agent = 100:60:20:3, after weighing the above components, first add starch and glycerin to the internal mixer and knead evenly, and then Add lycopodium powder and coupling agent to knead evenly to obtain lycopodium starch compound;

[0023] In the second step, according to the mass ratio, polypropylene: lycopodium starch composite material = 100: 150, the above-mentioned weighed raw materials are added to the mixer and mixed evenly to obtain a mixture, and then the mixture is added to the twin-screw extruder to melt Blending and extruding to obtain the lycopodium powder modified starch-polypropylene waterproof composite material.

[0024] The coupling agent described in the first step is a silane coupling a...

Embodiment 3

[0026] A kind of preparation method of lycopodium powder modified starch-polypropylene waterproof composite material of the present embodiment comprises the following steps:

[0027] The first step, according to the mass ratio, starch: glycerin: lycopodium powder: coupling agent = 100: 30: 5: 0.5, after weighing the above components, first add starch and glycerin to the internal mixer and knead evenly, and then Add lycopodium powder and coupling agent to knead evenly to obtain lycopodium starch compound;

[0028] In the second step, according to the mass ratio, polypropylene: lycopodium starch composite material = 100: 50, the above-mentioned weighed raw materials are added to the mixer and mixed evenly to obtain a mixture, and then the mixture is added to the twin-screw extruder to melt Blending and extruding to obtain the lycopodium powder modified starch-polypropylene waterproof composite material.

[0029] The coupling agent described in the first step is a titanate coupl...

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PUM

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Abstract

The invention discloses a preparation method of a lycopodium powder modified starch-polypropylene waterproof composite material, which comprises the following steps: adding starch, glycerol, lycopodium powder and a coupling agent into an internal mixer, uniformly kneading to realize composite hydrophobic modification of the lycopodium powder on the starch, and carrying out melt blending compounding on the prepared lycopodium starch composite material and polypropylene to prepare the lycopodium powder modified starch-polypropylene waterproof composite material. The lycopodium powder modified starch-polypropylene waterproof composite material is prepared. The lycopodium powder modified starch-polypropylene waterproof composite material prepared by the invention has good hydrophobicity and waterproofness, and can be used for processing disposable tableware such as a disposable lunch box, a disposable straw, a disposable cup and the like with good waterproofness.

Description

technical field [0001] The invention relates to a preparation technology of a polymer packaging material, in particular to a preparation method of a starch-polypropylene waterproof composite material. Background technique [0002] Polypropylene is a widely used plastic. Starch is biodegradable. Adding starch to polypropylene can make a degradable polypropylene starch composite material, which can be used to make disposable lunch boxes, disposable Single-use tableware such as straws and single-use cups. When the polypropylene starch composite material is used as a material for making disposable tableware, it is generally required to have a certain degree of water resistance, so as to prevent the disposable tableware made from it from being unusable due to water absorption. [0003] By improving the hydrophobicity of the surface of the polypropylene starch composite material, the modified starch-polypropylene waterproof composite material with good water resistance has import...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L3/02C08L99/00C08K5/053C08K5/54
CPCC08L23/12C08L3/02C08L99/00C08K5/053C08K5/54
Inventor 杨晓明
Owner SHAANXI SCI TECH UNIV
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