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High-strength EPP packaging bottom mat for refrigerator transportation and preparation method of high-strength EPP packaging bottom mat

A high-strength, bottom-cushion technology, applied in the polymer field, can solve the problems of being unenvironmental, non-recyclable, easy to break, etc., and achieve the effects of improving performance, increasing the degree of entanglement, and extending branched chains

Pending Publication Date: 2022-04-29
HISENSE(SHANDONG)REFRIGERATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the technical problems existing in the existing refrigerator packaging bottom mat, which is easy to generate debris due to external force impact, is easy to break, is not environmentally friendly, and cannot be recycled, it proposes a product with high structural strength, which can withstand higher external force and can be recycled. High-strength EPP packaging base pad for refrigerator transportation and preparation method thereof

Method used

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  • High-strength EPP packaging bottom mat for refrigerator transportation and preparation method of high-strength EPP packaging bottom mat
  • High-strength EPP packaging bottom mat for refrigerator transportation and preparation method of high-strength EPP packaging bottom mat

Examples

Experimental program
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Effect test

preparation example Construction

[0041] The above-mentioned preparation method of the high-strength EPP packaging bottom pad used for refrigerator transportation comprises the following steps:

[0042] Dry the ternary random copolymer polypropylene and add initiator, graft monomer, nucleating agent, toughening agent, anti-aging agent, etc. into the high-speed mixer according to the proportion and mix evenly, and feed it into the extruder through the feeder In the process, after melting, extruding, cooling, pelletizing, and drying procedures, high-strength and high-toughness melt-grafted modified polypropylene particles are obtained;

[0043] Add the above-mentioned high-strength and high-toughness melt-grafted modified EPP particles and water into the high-pressure reactor, and pass in the physical blowing agent CO 2 , the temperature of the equipment is set to 120-150°C, the pressure is set to 3.0-8.0MPa, after maintaining the pressure and stirring for 30-60min, adjust the pressure valve to reduce the pressu...

Embodiment 1

[0051] The raw materials are weighed in the following parts by weight: 90 parts of ternary copolymerized polypropylene resin, 1.5 parts of methacrylic acid, 7 parts of polyetheramine with a molecular weight of 3000, 0.05 part of dibenzoyl peroxide, 0.5 part of nano calcium carbonate, β- 0.5 parts of (3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, 0.5 parts of ethoxylated octadecylamine;

[0052] Dry the terpolymer polypropylene resin at 50°C for 6 hours, put it into a high-speed mixer and mix it evenly with other raw materials, feed it into the extruder through a feeder, and go through the procedures of melting, extrusion, cooling, pelletizing and drying Finally, the modified polypropylene particles are obtained;

[0053] Add the above-mentioned modified polypropylene particles and water into the autoclave, and pass in the physical blowing agent CO 2 , the temperature of the equipment is set to 135°C, the pressure is set to 5.0MPa, after maintaining the pressure a...

Embodiment 2

[0059] The raw materials are weighed in the following parts by weight: 91 parts of ternary copolymerized polypropylene resin, 2 parts of methacrylic acid, 5 parts of polyetheramine with molecular weight of 3000, 0.1 part of benzoyl tert-butyl peroxide, 0.5 part of nano talcum powder, 0.5 parts of n-octadecyl β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, 0.5 parts of ethoxylated octadecylamine;

[0060] The difference from Example 1 is that in the preparation step of Example 2, the speed of the main machine in the processing conditions of the melt extrusion of the extruder is 300 rpm; the pressure is set to 6.0 MPa when preparing a round of beads.

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Abstract

The invention provides a high-strength EPP packaging bottom mat for refrigerator transportation and a preparation method of the high-strength EPP packaging bottom mat, belongs to the technical field of macromolecules, and can solve the problems that an existing refrigerator packaging bottom mat easily generates scraps due to external force impact, is easy to break, is not environment-friendly and cannot be recycled. The high-strength EPP packaging bottom mat for refrigerator transportation is prepared from a high-strength and high-toughness melt grafting modified polypropylene material, and the high-strength and high-toughness melt grafting modified polypropylene material comprises the following components in parts by weight: 80-95 parts of polypropylene resin, 0.3-1 part of an initiator, 1-15 parts of a grafting monomer, 0.2-1 part of a foaming nucleating agent, 1-5 parts of a toughening agent and 0.5-1 part of an anti-aging agent. And 0.1 to 4 parts of other auxiliary agents. The packaging box can be applied to refrigerator transportation packaging, is high in structural strength, can bear higher external force and can be recycled.

Description

technical field [0001] The invention belongs to the technical field of macromolecules, and in particular relates to a high-strength EPP packaging bottom pad used for refrigerator transportation and a preparation method thereof. Background technique [0002] During transportation, home appliances are subject to various external forces, so packaging protective materials are required to slow down the impact of external forces and protect the products from damage. Cushioning packaging materials play a vital role in the production, warehousing and logistics of home appliances. In the refrigerator industry, corrugated boxes and EPS are generally used to protect products. However, EPS has low strength and is prone to debris when subjected to external forces. However, in order to protect the EPS bottom pad from being damaged by packaging tapes, EPS needs to be used in conjunction with PP chassis. Moreover, EPS is not easy to recycle, and it is difficult to degrade. It will produce ...

Claims

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Application Information

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IPC IPC(8): C08L51/06C08L71/00C08K3/26C08J9/12C08F255/02C08F220/06
CPCC08J9/122C08J9/0071C08J9/0061C08F255/02C08J2351/06C08J2471/00C08K2201/011C08K2003/265C08K3/34C08J2203/06C08F220/06
Inventor 韩冲常雪松任大伟白晴谷洋刘钊扬
Owner HISENSE(SHANDONG)REFRIGERATOR CO LTD