High density polyethylene and diatomite composite material for cushion packaging and preparation method thereof

Abstract

The invention discloses a high density polyethylene and diatomite composite material for cushion packaging and a preparation method thereof. The composite material is characterized by being composed of the following raw materials in percentage by weight: 30 to 40% of high density polyethylene, 50 to 60% of calcium carbonate, 3 to 6% of diatomite, and 2 to 4% of plasticizer and coupling agent. The components are reasonably compounded to generate a synergetic effect, the content of calcium carbonate and the production cost are reduced; at the same time, the high density polyethylene and diatomite can generate a synergetic effect to overcome the shortages of bad low temperature buffering property and easiness in aging, moreover, the ductility is effectively enhanced, and the provided composite material has the advantages of high impact strength, tensile strength, and tear strength, lightness, softness, and good wear-resistant property. The cushion packaging material prepared from the composite material has the advantages of damp and water resistant property, high toughness, difficulty in breaking, and strong impact resistant performance, is dustless, pollution-free, and environment-friendly, and can be recovered and reutilized.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a composite material of polyethylene and diatomite, that is, a composite material of high-density polyethylene and diatomite used for cushioning packaging and a preparation method thereof. Background technique [0002] Any product is inseparable from packaging, and a product without packaging cannot become a commodity. As an important part of commodity packaging, packaging materials play a pivotal role in the packaging industry. Plastic cushioning packaging has become a research hotspot in packaging materials due to its excellent product protection function, light weight and low price. Polyethylene (referred to as PE), which is widely used in packaging materials, is a thermoplastic resin obtained by polymerization of ethylene. It is odorless, non-toxic, feels like wax, and has excellent low temperature resistance (the minimum operating temperature can reach -100 ~-70°...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the above-mentioned deficiencies of the prior art, and provides a high-density polyethylene and diatomite composite material for cushioning packaging by utilizing the characteristics of diatomite having porous properties and good heat resistance. The co-extrusion process enables the physical / chemical interaction between the polyethylene long chain and the diatomite pores, and fully integrates the two through the capillary effect, improving the heat resistance of the high-density polyethylene / diatomite composite material during the buffer molding process. , easy aging, low corrugated adhesion and other shortcomings, providing a new idea for the design of cushioning packaging materials

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