Degradable packaging foam material and preparation method thereof

Abstract

The invention discloses a degradable packaging foam material and a preparation method thereof, belonging to the field of glass production field. The degradable packaging foam material contains the following components: quartz sand, glass cullet, industrial alkali, sodium nitrate, white arsenic, antimony trioxide, borax, vanadium trioxide, iron oxide, manganese trioxide, high-molecular-weight dimethicone, tricalcium phosphate micropowder and corn oligopeptide powder. The degradable packaging foam material is prepared by the steps of fusion, frothing, secondary frothing, formation and the like.By utilizing high-molecular-weight dimethicone, the tricalcium phosphate micropowder and the corn oligopeptide powder as a reinforcing system, the degrading rate of a glass product is increased, and the mechanical properties and effects of the glass product are improved.

Description

technical field [0001] The invention belongs to the field of packaging material production technology, and in particular relates to a degradable packaging foam material and a preparation method thereof. Background technique [0002] In order to gradually eliminate the white pollution caused by polystyrene foam packaging materials, some packaging materials have been changed to polyethylene foam packaging materials. Polyethylene foam plastics can be degraded when exposed to air (under the action of light, heat, and oxygen), but The degradation rate is much lower than that of polypropylene foam. However, whether it is polyethylene or polypropylene, they are difficult to biodegrade, that is to say, they cannot be degraded by deep burial, which is a difficult problem for domestic waste disposal. For this reason, Chinese patent CN1354197 uses starch, polypropylene and polyethylene as main ingredients to mix and make packaging materials, wherein starch can be biodegradable, mixed ...

AI Technical Summary

Problems solved by technology

Although it has achieved biodegradation, it is not ideal. First, it is not foamed and is a solid packaging material. It cannot be compared with foam materials in terms of shock absorption and application weight. Second, polyethylene is added to the components. material, causing it to degrade less rapidly than a single polypropylene material

In addition, due to the low viscosity and strength of polypropylene after melting, the foaming process is not easy to master. At present, polypropylene foam packaging materials can be bought in foreign markets, but there are no finished polypropylene foam materials in China.

[0003] The Chinese patent document "Starch-polypropylene foam packaging material and its preparation method (Patent No.: CN1247685C)" discloses a starch-polypropylene foam packaging material and its preparation method, which is characterized in that it includes 30-42 parts of starch polypropylene, 70 ~100 parts of p-toluenesulfonyl semicarbazide 3~5 parts, sodium benzoate 0.5~1.0 parts, 2,5-dimethyl-2,5-di-tert-butylperoxyhexane 1~2 parts or di 1.5~2.5 parts of fatty acid glycerides of cumene, 12~16 parts of 14~20 parts of isopentane or 3~4 parts of carbon dioxide, its beneficial effect is: its degradation performance is more excellent, and degradation rate is faster, and the present invention also solves simultaneously It solves the problem that polypropylene is difficult to foam, making it a good foam packaging material, but its degradation rate is not high and its mechanical properties are not enough