Preparation method of starch-based formed buffer material

A cushioning material, starch-based technology, used in the field of foam materials

Active Publication Date: 2019-02-22
ZHEJIANG GREAT SHENGDA PACKING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current foam materials only have the function of buffering and absorbing energy, and the failure of electronic components, instruments and meters is not only caused by vibration and impact, but also related to the humidity of the environment.

Method used

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  • Preparation method of starch-based formed buffer material
  • Preparation method of starch-based formed buffer material
  • Preparation method of starch-based formed buffer material

Examples

Experimental program
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Effect test

preparation example Construction

[0032] According to some embodiments, the preparation method of the above-mentioned starch-based foam buffer material specifically includes:

[0033] S1. Mix an inorganic strong base, acrylic acid and acrylamide to form a first composite humidity-conditioning material.

[0034] Specifically, the inorganic strong alkali solution is added dropwise to acrylic acid, then mixed with acrylic acid amine, and stirred until the acrylic amine is completely dissolved to obtain the first composite humidity control material, namely (acrylic acid + sodium acrylate)-acrylamide composite humidity control material . Wherein, the inorganic strong alkali solution is NaOH solution with a concentration of 28-40%, and the dropping process is carried out under cold water bath and electromagnetic stirring. The consumption of inorganic strong base, acrylic acid and acrylic acid amine is mixed according to the proportion in the above-mentioned raw material proportioning.

[0035] S2. Reacting the fir...

Embodiment 1

[0043] 1) Prepare the first composite humidity control material, namely acrylic acid-sodium acrylate-acrylamide solution:

[0044] Use 12g of water to prepare 6.8g of NaOH into a solution. Under a cold water bath and electromagnetic stirring, use a dropper to slowly add the prepared NaOH solution to 13.5g of acrylic acid (AA), and then follow (acrylic acid + sodium acrylate): Acrylamide (AM)=32.3g:9.6g mass ratio Weigh a certain amount of acrylamide and add it to the above-mentioned acrylic acid (sodium) solution, and keep stirring until AM is completely dissolved. Wherein, acrylic acid+sodium acrylate refers to a mixed solution obtained by dropping NaOH solution.

[0045] 2) Prepare the second composite humidity-conditioning material, that is, the starch-based composite humidity-conditioning material:

[0046] Weigh 6g of cornstarch, add it to the above mixed solution, stir and mix evenly, and gelatinize for 40min in a water bath with a temperature of 68°C and a speed of 410...

Embodiment 2

[0050] 1) Prepare the first composite humidity control material, namely acrylic acid-sodium acrylate-acrylamide solution:

[0051] Use 9.2g of water to prepare 4.4g of NaOH into a solution. Under cold water bath and electromagnetic stirring, slowly drop the prepared NaOH solution into 11.6g of acrylic acid (AA) with a dropper. : Mass ratio of acrylamide (AM)=25.2g:4.8g Weigh quantitative acrylamide and add it into the above-mentioned acrylic acid (sodium) solution, and keep stirring until AM is completely dissolved. Wherein, acrylic acid+sodium acrylate refers to a mixed solution obtained by dropping NaOH solution.

[0052] 2) Prepare the second composite humidity-conditioning material, that is, the starch-based composite humidity-conditioning material:

[0053] Weigh 2.4g of cornstarch, add it to the above mixed solution, stir and mix evenly, gelatinize in a water bath with a temperature of 62°C and a speed of 490r / min for 26min; after taking it out to room temperature, add ...

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Abstract

The invention relates to the technical field of foamed materials, in particular to a preparation method of a starch-based formed buffer material. The starch-based formed buffer material is prepared from 11-17 parts of inorganic strong base, 29-34 parts of acrylic acid, 12-24 parts of acrylamide, 6-15 parts of starch, 0.4-0.6 part of an initiator, 0.4-0.6 part of a plasticizer and 0.4-0.6 part of acrosslinking agent. The preparation method comprises the following steps: mixing the organic strong base, acrylic acid and acrylamide to form a first compound humidifying material; carrying out a reaction on the first compound humidifying material, starch, potassium persulfate, glycerinum and N,N-methylene bisacrylamide to form a second compound humidifying material; and heating and foaming the second compound humidifying material to form the starch-based formed buffer material. The buffer material prepared can adjust the humidity of a closed space effectively and has good moisture / adsorptionand liberation performance. Meanwhile, the starch-based formed buffer material is relatively high in platform stress and relatively small in buffer coefficient and has an excellent buffering and energy absorbing function.

Description

technical field [0001] The invention relates to the technical field of foam materials, in particular to a preparation method of starch-based foam buffer materials. Background technique [0002] With the improvement of people's living standards, the development of the logistics industry is also getting faster and faster, and the products are often damaged due to mechanical loads such as vibration and impact during the circulation process, so it is necessary to adopt cushioning packaging technical measures for protection . The key to cushioning protection is to choose the appropriate cushioning packaging material. The so-called cushioning packaging material refers to a protective material that can absorb a large amount of impact energy and prevent products from being damaged by vibration and impact. There are many types of cushioning packaging materials, and foaming materials are the most widely used type with excellent comprehensive performance. Because of its good cushion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/06C08F220/56C08F222/38C08J9/00
CPCC08F251/00C08J9/00C08J2351/02C08F220/06C08F220/56C08F222/385
Inventor 鄂玉萍卓丽菊孙俊军黄煜琪石义伟王召霞王家俊
Owner ZHEJIANG GREAT SHENGDA PACKING CO LTD
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