Foamable material for supporting packaging structure and preparation method of foamable material

A technology of packaging structure and foaming agent, applied in the field of styrofoam, which can solve the problems of colloids that are not easy to degrade, environmentally unfriendly, and lack of buffering effect

Pending Publication Date: 2022-01-28
广州汇固新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The primary purpose of the present invention is to solve the technical problems in the prior art that there is a lack of foamable materials for buffering and supporting structures for packaging bags, and the existing colloids are not easy to degrade and are not environmentally friendly, and provide a A kind of foamable material for supporting packaging structure and preparation method thereof

Method used

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  • Foamable material for supporting packaging structure and preparation method of foamable material
  • Foamable material for supporting packaging structure and preparation method of foamable material
  • Foamable material for supporting packaging structure and preparation method of foamable material

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Embodiment 1

[0044] The foaming emulsion in the present embodiment 1 is based on 98 g of water-based polymer emulsion, and the polymer emulsion is water-based acrylate emulsion (Acronal V206 acrylate emulsion of BASF). The requirement for the polymer resin emulsion is that the polymer needs to have certain flexibility after drying, and its glass transition temperature should be lower than 40°C.

[0045] The present invention discovers the relationship between matrix emulsion, glass transition temperature lower than 40 DEG C, and flexibility, and then applies it to styrofoam products. Also, usually the role of flexibility is to play a role in the bag's resistance to deformation when stretched, when the bag is stacked, or when there is rubbing. The difference from the elastic properties is that the action time of the elastic deformation is prolonged, that is, it can be considered that the flexibility is exerted, which makes the structural stability of the bag stronger. For example, the elas...

Embodiment 2

[0050] In this embodiment 2, the foaming emulsion is based on 120 g of water-based high molecular polymer emulsion, which is a compound of 80 g of DA101 vinyl acetate-ethylene copolymer of Dalian Chemical and 40 g of U54 polyurethane emulsion of Bayer. The requirement for the compounded polymer resin emulsion is that the polymer needs to have certain flexibility after drying, and its glass transition temperature should be lower than 5°C.

[0051] 11g of foaming powder that can be heated and foamed is added to the foaming emulsion. The foaming powder includes polymers that are foamed microspheres containing alkane gas inside the shell, such as Aksu’s Expancel series of foamed microspheres, Shanghai Tuojia foaming microsphere series, Japan Sekisui foaming microsphere series, American Polychem foaming microsphere series, etc.; there is also AC foaming agent of azodicarbonamide. The foaming temperature of the foamed microspheres or foamed powder of the present invention needs to b...

Embodiment 3

[0055] In the present embodiment 3, the foaming emulsion is based on 108 g of water-based polymer emulsion, which is 50 g of Acronal V206 acrylate emulsion of BASF, 30 g of U54 polyurethane emulsion of Bayer, and 28 g of SD417 styrene-butadiene emulsion of BASF. The requirement for the compounded polymer resin emulsion is that the polymer needs to have certain flexibility after drying, and its glass transition temperature should be lower than 2°C.

[0056] 8g of foaming powder that can be heated and foamed is added to the foaming emulsion. The foaming powder includes polymers that are foamed microspheres containing alkane gas inside the shell, such as Aksu’s Expancel series of foamed microspheres, Shanghai Tuojia foaming microsphere series, Japan Sekisui foaming microsphere series, American Polychem foaming microsphere series, etc.; there is also AC foaming agent of azodicarbonamide. The foaming temperature of the foamed microspheres or foamed powder of the present invention n...

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Abstract

The invention provides a foamable material for supporting a packaging structure and a preparation method of the foamable material. The foamable material comprises a matrix emulsion taking a water-based high-molecular polymer as a main component and a foaming agent capable of being heated to foam. The foam material is prepared from the following components in parts by weight: 80 to 120 parts of matrix emulsion and 3 to 30 parts of foaming agent, wherein the glass transition temperature of the dried matrix emulsion does not exceed 40 DEG C, and the foaming temperature of the foaming agent is 80-200 DEG C. According to the invention, the ratio of the matrix emulsion to the foaming agent and the limitation and comprehensive action of the glass transition temperature and the foaming temperature on the matrix emulsion and the foaming agent enable the product to have good elasticity, extensibility and flexibility. Meanwhile, the density of colloid formed after the foamable material is foamed is smaller than that of a dissolving solution, the density of paper pulp is larger than that of the dissolving solution, layering of the two substances in the dissolving solution is caused, and secondary recycling is facilitated. In addition, the foamable material disclosed by the invention is good in degradability and has an environment-friendly value.

Description

technical field [0001] The invention relates to the technical field of styrofoam, in particular to a styrofoam for supporting a packaging structure and a preparation method thereof. Background technique [0002] With the development of express logistics industry, mailing and receiving parcel express has become people's daily behavior. Due to the different objects to be transported, the transport packaging will also adopt different structural forms. For example, thinner documents are packed in envelopes, and larger appliances are packed in foam and cartons to protect against knocks and crushing. The previous packaging only considered how to protect the transported goods, and used some toxic and harmful materials such as plastics and foams without restraint. However, environmental protection has become an inevitable trend at this stage. How to realize the protection of transported goods, At the same time, it is possible to achieve low-pollution or even non-polluting, low-cos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/228C08J9/10C08L33/00C08L31/04C08L53/02C08L75/04
CPCC08J9/228C08J9/103C08J2333/00C08J2331/04C08J2475/04C08J2453/02C08J2203/04C08J2203/22
Inventor 李紫柔
Owner 广州汇固新材料技术有限公司
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