Foam plastic
Foam plastic is a kind of plastic obtained through physical or chemical way to make micropore structure inside plastic, which has the advantages of light weight, heat insulation, cushioning, insulation, anti-corrosion, low price, etc. Almost all thermosetting and Thermoplastics can be made of foam plastic, common foam plastics are polystyrene, polyurethane, polyolefin.
Three plastic foam contrast
Introduction of foamed polypropylene
Foamed polypropylene is a foamed plastic made from polypropylene-based resin, which has many advantages over conventional foamed plastics.
Foam polypropylene raw materials
As the lower melt strength of conventional polypropylene can not guarantee the tensile stress to the cell wall when the bubble grows, high melt strength polypropylene (HMSPP) is required for foaming polypropylene.
Methods to increase the melt strength of polypropylene include two types of methods: physical blending and chemical modification.
At present, manufacturers of high-melt-strength polypropylene raw materials include Basell, Borealis, Dow Chemical, Samsung, ExxonMobil and so on. Manufacturers of polypropylene foam technology include JSP and Kaneka, as well as BASF, Berstorff company.Many domestic research institutes foaming technology more research, some manufacturers to achieve industrial production, such as Zhenhai Refining & Chemical, Yanshan Petrochemical Resin Institute, Wuhan Fudiya, but the quality of products compared with foreign countries There is still a big gap.
Preparation of foamed polypropylene
There are mainly three kinds of foam polypropylene production process: high melt strength polypropylene foam, cross-linked polypropylene foam, foam blends process.
The key to making foamed polypropylene
Foamed polypropylene products have good performance and application prospects, but the technical development is difficult, the key technology of polypropylene foaming process is to control the foaming stability and foaming ratio of polypropylene by adjusting the process temperature.
Foaming polypropylene applications
Food packaging
Foam polypropylene has good biodegradability and good oil resistance, which makes it a clear advantage in the disposable packaging market over refractory polystyrene foam tableware.
2. Insulation
Foam polypropylene material is a new type of insulation materials, high temperature resistance, the temperature can usually withstand the range of -40 ~ 110 ℃, in a short period of time can withstand 130 ℃ high temperature.
3. Automotive industry
In recent years, the expanded polypropylene material has been widely applied in the field of automobile industry, which can greatly reduce the weight of the automobile and save fuel consumption.
Building area
Waterproof protective materials, floor cushioning materials, exterior insulation materials
Electronic packaging
6 cushion packaging
7. Sporting goods
8. toys
Foam polypropylene main production enterprises
Foamed polypropylene products have good performance and application prospects, but the technology development is very difficult, at present there is no relevant, industrial products appear, the core technology is mainly in the hands of the two companies JSP and KANEKA.
