Author: mgg-Plastic bottle manufacturer
High temperature and high pressure plastic bottles can be sterilized in high temperature steam, and 121 degrees for 30 minutes, the bottle is not deformable. High-temperature and high-pressure plastic bottles of high temperature and high-pressure plastic bottles for high-temperature steam sterilization. Polypropylene is a thermoplastic resin prepared by polymerization of propylene.
According to the methyl group, it is divided into three types of polypropylene non-regular polypropylene and split polypropylene. The group is arranged in the same side of the molecular main chain, and the alignment of the methyl no order is not regular polypropylene in both sides of the molecular main chain, and when the methyl alternately arranges both sides of the molecular main chain Polypropylene. In general industrial polypropylene resins, the equilation structure content is about 95%, and the remaining is random or inter-polypropylene.
Industrial products are mainly ingredients. Polypropylene also includes propylene and a small amount of ethylene copolymer. Usually a translucent colorless solid.
The relative density is small, only 0.89-0.91 is one of the lightest varieties in plastics. Polypropylene has many excellent properties: 1, relative density, only 0.89-0.91, is one of the lightest varieties in plastics. 2, good mechanical properties, except for impact resistance, other mechanical properties are better than polyethylene, and well-formed processing performance.
3, with high heat resistance, continuous use temperature can reach 110-120 ° C. 4. Good chemical performance, almost no water, and the vast majority of chemical drugs do not respond. 5, pure texture, non-toxic.
6, the electrical insulation is good. 7. The transparency of the polypropylene article is better than the transparency of high density polyethylene products. Since the structural regulation is high, the melting point can be as high as 167 ° C.
Heat resistance, corrosion resistance, product available steam disinfection is its prominent advantage. Small density is the lightest generic plastic. The disadvantage is that low temperature resistance is poor, it is more aging, but can be overcome by modification.
Therefore, polypropylene is most suitable for use in a raw material for high temperature and high pressure plastic bottles.