The development of science and technology promotes the renewal and progress of materials, the change of consumer ideas accelerates the development and progress of the packaging industry, and coordination with each other further strengthens the evolution and functional transformation of packaging materials. At present, the investment in technology has created new packaging materials, and some high-tech materials have been expanded and applied in the field of packaging, but some are in the packaging world in the early stage of testing or showing their cutting edge, of course, some materials have great potential for development. This article combines new forms to scan the high-tech materials in the package to make a summary of the high-tech materials for the packaging customers.

1. Nano packaging materials

Nano packaging material is a hot research direction this year. It is an emerging packaging material, mainly including nano composite packaging material, polymer-based composite packaging material, and nano-type antibacterial packaging material. At present, the most studied nano-composite packaging materials are polymer-based nano-composite materials (PNMC), its plasticity, wear resistance, hard strength and other properties have been significantly improved and enhanced; in polymer-based nano-composite packaging materials, Polymer layered inorganic nano-composite packaging materials have achieved rapid development due to the breakthrough of the skewer technology, and some research results have begun to enter the industrialization or have attracted much attention because of their great industrial application prospects; for nano-inorganic antibacterial packaging materials , It has obvious characteristics: long-term antibacterial ability, broad-spectrum antibacterial performance, excellent killing and inhibition rate, anti-cloud agent for human and animal safety, stable physical and chemical properties of antibacterial products, low cost of antibacterial agents, etc.

2. Metal matrix composite materials

Metal matrix composite materials have relatively high strength, high modulus, good high temperature performance, good electrical and thermal conductivity, and are especially suitable for aviation and other industrial sectors. Metal-based composite technology has made rapid progress, with a variety of methods. Therefore, the metals used for compounding are mainly Ti, Ni, Cu, Pb, Ag, especially light metal based Al, Mg, Ti and so on. Composite materials include metals, non-metals and other compounds.

3. Biopolymer materials

Biopolymer materials have entered the experimental stage, such as artificial blood vessels, artificial hearts, artificial valves, artificial lungs, artificial gills, artificial bones and so on. The application of biopolymer materials in packaging is expanding day by day. For example, microbial (bacterial) plastics, biodegradable plastics, and light-emitting double-solvent plastics are all hot topics in the packaging world today.

4. Silicone and fluorine materials

Silicon-based polymer materials are new materials in the 21st century. At present, based on molecular design and molecular structure control, we discuss the synthesis reactions such as defluorinated condensation and hydrosilane methylation, develop molecularly diverse functional materials, and develop optoelectronic functional materials for high-end composite membrane equipment. (Silicone is an ecomaterial with excellent performance, mainly used in aerospace, automotive, construction, bioengineering and other high-tech fields. The goal of the next stage is to improve molecular design and synthesis technology to realize the functionalization of silicone, Optimization of polymer synthesis and material preparation technology.

Fluorine-based materials have made good progress in the application of packaging. For example: high strength, functionalization, high stability of PTFE, thermal stability of PEA, functional film of PVDF. In addition, fluorine-based polymers with good piezoelectricity, antistatic properties, radiation resistance, and wear resistance have been introduced.

5. New plastics and plastic alloys

Engineering plastics such as polysulfone, polyphenylene sulfide, polyether ether ester, polyacid pressed amine, and polyarylate have been mainly developed in China, with good application. Foreign polycarbonate, polyester, polyphenolamine and polyoxymethylene still dominate. Among them, polycarbonate develops fastest. Engineering plastics mainly study modification and application, alloying technology, compound technology and processing technology. Plastic alloys mainly study interpenetrating networks, graft copolymerization and block copolymerization in alloying technology, molecular compounding technology, reactive extrusion, mutual blending and physical mixing.

In foreign countries, PBT and PET alloys are developing fastest, especially in automotive and automation equipment and electronics are increasingly used.

There are mainly reports of PBT / ABS, PBT / PC, PBT / silicone, PBT / PPE, PBT / PET, PBT plastic alloys used to manufacture special high-strength packaging containers, while the performance of the US PET alloy (LCP10%) is better than PET Many are also being used in packaging.

6. Metal foil and profile

Due to the development of thinning technology, the types of metal foils have greatly increased. The main varieties are gold foil, copper foil, aluminum foil, Be foil, Ta foil, Ag foil, Zn foil, iron foil, and Ni-CR and other alloy foils. . There are three development directions for metal foils: ultra-long, ultra-thin, and ultra-thin; porous cavitation; compounding.

The development of profiled materials is also very rapid. Various profiles (such as complex honeycomb profiles) can be produced. Profiled materials are developing towards thinning, lightening and functionalization. Profiles, especially paper-made honeycomb materials, also have a small number of applications in the packaging field, and the prospects are promising.

7. Functional polymer materials

The new varieties of functional polymer materials are mainly in several categories: 1) Electrical functional polymers such as conductive materials 2) Optical functional molecules such as photoconductive materials, gradient refractive index polymers 3) Chemical functions such as catalytic materials, adsorbent materials 4) Magnetic Functions such as magnetic polymer materials 5) Mechanical functions such as separation membranes and oxygen-rich membrane polymer materials in mass transfer functional materials 6) Biological functions such as biomedical polymer materials, biodegradable materials (heat-shrinkable films), heat-resistant polymers Materials, thermochromic materials 7) Smart polymer materials (such as polypyrrole, polythiophene, polyaniline), etc.

8. Surface modified materials

There are many types of modern modified materials, including metallic, non-metallic, ceramic, plastic and multiple compounds. The packaging industry uses relatively more surface-modified new materials. For example, in order to improve the condensation performance of packaging plastic films, vacuum vapor deposition (PVD) technology is used to "coat" a very thin aluminum film and silicon oxide film on the plastic surface; laser scanning is used to process the plastic film; The surface modification of electrolytic iron foil is carried out by using fluroic acid monitoring passivation technology to strengthen the performance of materials and so on. And these two trends will continue.

9. Organic optoelectronic materials

The newly developed varieties of optoelectronic organic polymer materials are: organic photochromic polymer materials, non-linear optical materials, photosensitive refractive materials, polarized polymer materials, selective head light, selective light-transmitting polymer materials, photoelectric conversion functional materials, Electrically functional polymer materials, etc. Non-linear optical polymers (NLO), gradient index polymers (such as methacrylates, vinyl benzoates, etc.) have also made considerable progress. Therefore, the application of organic optoelectronic materials in special packaging has great potential.

10. Resin-based composite materials

There are many types of polymer composites that use resin as the matrix if various fibers, pellets or films are compounded. Such as the addition of conductive fibers to form conductive functional materials, wave-absorbing functional materials, the addition of ceramic, glass fiber and carbon fiber composite reinforcement materials, or the multi-layer composite of different resin films into composite materials, etc., its application fields are very wide; reinforced fiber composite type More than 30 kinds of fibers are commonly used. It has been widely used in the packaging of the main organic layer composite, co-extruded composite, hybrid composite and other types of composite materials.

The development trend of resin-based composite materials: one is to improve the composite process and improve the performance and function of the composite material; the second is to select the appropriate materials and the best process to reduce the cost of the composite material; the third is to develop new varieties, such as the structured Materials, functionalized materials, molecular composites, ecological composites, etc.

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