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One of the key problems of failure-free operation of machinery is
prevention of corrosion. The global scale of modern production
makes this problem even more critical. At the beginning of the 21st
century industrial contami- tion and the corrosion-active nature of
the environment reached a level such that corrosive damage of
materials became commensurate with their prod- tion volume and
expenditure on anticorrosion protection of machines became
comparable with investments in basic production. Anticorrosion
techniques changed from being an auxiliary service to industrial
enterprises into a dev- oping, scienti?cally intensive and
generously ?nanced branch of production. Polymers occupy a very
speci?c place amongst anticorrosion techniques. Polymers combine
good chemical resistance with impermeability to di?- ent media and
unusual deformation characteristics. The main principle of their
application as anticorrosion means is the creation of a tight
barrier that insulates metal machine parts or constructions from
corrosion agents. The advantages of polymers allow the creation of
such a barrier at minimal cost,
providingprotectionoftheworkingmachinesfromcorrosion, combining
their manufacture with preservation and decreasing the cost of
anticorrosion. This is one of the main reasons why world production
of polymer materials increased by almost 50% in the past decad
One of the key problems of failure-free operation of machinery is
prevention of corrosion. The global scale of modern production
makes this problem even more critical. At the beginning of the 21st
century industrial contami- tion and the corrosion-active nature of
the environment reached a level such that corrosive damage of
materials became commensurate with their prod- tion volume and
expenditure on anticorrosion protection of machines became
comparable with investments in basic production. Anticorrosion
techniques changed from being an auxiliary service to industrial
enterprises into a dev- oping, scienti?cally intensive and
generously ?nanced branch of production. Polymers occupy a very
speci?c place amongst anticorrosion techniques. Polymers combine
good chemical resistance with impermeability to di?- ent media and
unusual deformation characteristics. The main principle of their
application as anticorrosion means is the creation of a tight
barrier that insulates metal machine parts or constructions from
corrosion agents. The advantages of polymers allow the creation of
such a barrier at minimal cost,
providingprotectionoftheworkingmachinesfromcorrosion, combining
their manufacture with preservation and decreasing the cost of
anticorrosion. This is one of the main reasons why world production
of polymer materials increased by almost 50% in the past decad
This book is devoted to a nontraditional class of materials which are manufactured by the melt-blowing process - i.e. by extrusion of polymer melt followed by fiber stretching with a gas stream. For the first time extensive data on classical and modern modifications of this technology are generalized and a review is given of extrusion head dies and subsidiary equipment. The text examines the structure and main properties of melt-blown materials as conditioned by peculiarities of overheated polymer melt spraying in an oxidizing medium. Information is given about filtering mechanisms and the main types of polymer fibrous filtering materials: electret, magnetic, adsorptional, bactericidic, and about carriers of microorganisms in biofilters. Social and ecological aspects of the application of melt-blown materials are analyzed.
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