3. PET plastic beer bottle research and development ideas Based on the PET plastic beer bottle development status and technical characteristics, this paper on the future development and research of PET beer bottles to make some
Vision and outlook. As the surface coating process is complex, and related to food safety and other factors are more difficult to develop, and through the structural design and development of single-layer new film material at the molecular level there are still bottlenecks, the most promising process still For multi-layer composite technology, this method is simple, the processing equipment requirements are low, and has proved that multi-layer composite in improving the material barrier can also be achieved through different composite layers to achieve versatility, such as anti-UV, Heat, etc., is the most suitable preparation of high barrier plastic bottle molding process. The modification of PET and the study of high-efficiency barrier layer will be the most efficient research direction. Multi-layer extruded material can be divided into inner layer - barrier layer - outer substrate to be treated separately. For the inner layer of PET material, a small amount of good barrier material can be blended with PET, such as the use of PET and a small amount of PEN or EVOH melt blends as a base material, under the premise of control costs to improve the barrier properties of the substrate. For the barrier layer, can be used to study the efficient barrier layer, such as nano-nylon materials. Of course, it is the quickest way to achieve a high barrier plastic bottle by designing a new high barrier material by molecular structural design, since the barrier has less impact on food safety and less design constraints. At the same time, for the outer layer of the barrier layer, the introduction of nanomaterials can improve the function of the material. Different nano-particles can improve the different properties of the material, such as the introduction of SiO2 can improve the barrier properties and mechanical properties of nano-TiO2 can be improved The anti-ultraviolet properties of the material to improve the durability of the bottle, the addition of nano-silver can improve the antibacterial properties of materials, so as to solve the problem of heating and sterilization of materials. How to realize the effective dispersion of nano-particles in materials is the prerequisite for the functionalization of nanocomposites in the process of introducing nanometer material into the matrix. The surface modification can be used to improve the nanoparticle and the surface of the nanoparticles by grafting the matrix particles on the surface of the nanoparticles. The compatibility of the substrate to achieve nanoscale dispersion.