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Preparation method of starch-based foaming buffer material

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

Active Publication Date: 2021-04-06
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 foaming buffer material
  • Preparation method of starch-based foaming buffer material
  • Preparation method of starch-based foaming buffer material

Examples

Experimental program
Comparison scheme
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 foaming materials, in particular to a method for preparing a starch-based foaming buffer material, which comprises: 11-17 parts of inorganic strong base, 29-34 parts of acrylic acid, 12-24 parts of acrylamide, 6 parts of starch ~15 parts, initiator 0.4~0.6 parts, plasticizer 0.4~0.6 parts and crosslinking agent 0.4~0.6 parts by weight, mix inorganic strong base, acrylic acid and acrylamide to form the first composite humidity control material ; reacting the first composite humidity-conditioning material with starch, potassium persulfate, glycerin and N,N-methylenebisacrylamide to form a second composite humidity-conditioning material; heating and foaming the second composite humidity-conditioning material , to form a starch-based foam cushioning material. The prepared cushioning material can effectively adjust the humidity in a closed space, and has good moisture absorption / release performance. At the same time, its platform stress is high, the buffer coefficient is small, and it has excellent buffering and energy-absorbing functions.

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 Patents(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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