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Modification method of hollow glass microspheres and method for preparing starch or polyvinyl alcohol composite membranes using the obtained modified hollow glass microspheres

A technology of starch composite film and glass microspheres, which is used in the field of modification of modified hollow glass microspheres to prepare starch or polyvinyl alcohol composite films and hollow glass microspheres, and can solve the problem of hollow glass microspheres and polyvinyl alcohol Or poor starch compatibility and other problems, to achieve the effect of improving mechanical properties and water vapor transmission rate, improving mechanical properties, and improving performance

Active Publication Date: 2019-04-16
ZHENGZHOU HOLLOWLITE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first purpose of the present invention is to provide a method for modifying hollow glass microspheres to alleviate the technical problem of poor compatibility between hollow glass microspheres and polyvinyl alcohol or starch in the prior art. Persistent hollow glass microspheres have good compatibility with polyvinyl alcohol or starch

Method used

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  • Modification method of hollow glass microspheres and method for preparing starch or polyvinyl alcohol composite membranes using the obtained modified hollow glass microspheres
  • Modification method of hollow glass microspheres and method for preparing starch or polyvinyl alcohol composite membranes using the obtained modified hollow glass microspheres
  • Modification method of hollow glass microspheres and method for preparing starch or polyvinyl alcohol composite membranes using the obtained modified hollow glass microspheres

Examples

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Effect test

Embodiment 1

[0043] A chloroacetic acid modified hollow glass microsphere, prepared by the following method:

[0044] Mix 25g of hollow glass microspheres with 250mL of 1% chloroacetic acid solution, react at 40°C for 2h, then carry out suction filtration, then wash the hollow glass microspheres with distilled water until neutral, and dry them under vacuum at 60°C , to obtain chloroacetic acid modified hollow glass microspheres.

Embodiment 2

[0046] A chloroacetic acid modified hollow glass microsphere, prepared by the following method:

[0047] Mix 25g of hollow glass microspheres with 250mL of 2% sodium hydroxide solution, ultrasonically mix for 1h, and then mechanically stir at 90°C under oil bath conditions for 1h. After the reaction, add 2.5g of chloroacetic acid and react at 40°C for 2h. Suction filtration is then performed, and then the hollow glass microspheres are washed with distilled water until neutral, and vacuum-dried at 60° C. to obtain chloroacetic acid-modified hollow glass microspheres.

Embodiment 3

[0049] A starch-modified hollow glass microsphere, prepared by the following method:

[0050] Mix 2.5L of water, 250mL of 25wt% ammonia solution and 25mL of 80wt% hydrazine hydrate solution to configure a mixed solution; take 500g of the mixed solution, add 25g of the chloroacetic acid modified hollow glass microspheres in Example 1 and 25g of starch, and stir for 30min After reacting at 90°C for 4h, starch-modified hollow glass microspheres were obtained after filtration and drying.

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Abstract

The invention provides a modifying method for hollow glass micro-beads and a method for preparing a starch or polyvinyl alcohol composite membrane by the obtained modified hollow micro-beads, and relates to the technical field of hollow glass micro-bead processing modification and biodegradable composite membranes. The modifying method for the hollow glass micro-beads comprises the following steps: enabling the surfaces of the hollow glass micro-beads to be in contact with chloroacetic acid solution to obtain chloroacetic acid-modified hollow glass microbeads. The application of the method relieves the technical problem of poor compatibility between the hollow glass micro-beads and the polyvinyl alcohol or the starch in the prior art, and can achieve the technical effect that the hollow glass micro-beads can be in good compatible with biodegradable materials, such as the starch or the polyvinyl alcohol.

Description

technical field [0001] The present invention relates to the technical field of processing and modification of hollow glass microspheres and biodegradable composite membranes, in particular to a method for modifying hollow glass microspheres and the use of the obtained modified hollow glass microspheres for preparing starch or polyvinyl alcohol composite membranes. method. Background technique [0002] Plastic is a particularly important one among the major inventions that have changed human life. Plastic has penetrated into every aspect of human life, and it has become the four pillar materials alongside steel, wood, and cement. While plastic brings civilization to people, it also brings some harm. Disposable plastic waste, such as: plastic mulch, garbage bags, shopping bags, tableware, food packaging and industrial packaging materials, etc., pollute farmland, coastal ports and tourist attractions The environmental problems caused by environmental pollution are becoming mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C08K9/02C08K7/28C08K5/053C08L3/02C08L29/04
Inventor 蔡耀武张英才曾荣平蔡新奇蔡建武何南
Owner ZHENGZHOU HOLLOWLITE MATERIALS CO LTD