Babban kayan aiki na tsari shine MZCR (Multi zone zagayawa reactor tsarin) Reactor R230 tsarin. The reactor kunshi riser da downcomer. A cikin mai tashi, ana hura polymer zuwa sama ta hanyar iskar gas don samar da ruwa, which is sent to the upper part of the downcomer to pass through the cyclone separator, and the powder is collected in the downcomer. The reaction gas is circulated by the centrifugal compressor through the external pipeline, and the reaction heat [...]
Process features: (1) no solvent is added in the system, propylene monomer is polymerized in liquid phase in the kettle reactor, and ethylene propylene is polymerized in gas phase in the fluidized bed reactor; (2) simple process, less equipment, less investment, low power consumption and production cost; (3) polymerization is carried out in the kettle stirring reactor (Hypol process) or the loop reactor (Spheripol process) Random copolymerization and block copolymerization were carried out in a stirred bed reactor.The typical [...]
Solution polymerization Process features: (1) using high boiling point straight chain hydrocarbon as solvent, operating at a temperature higher than the melting point of polypropylene, all the polymers obtained are dissolved in the solvent and distributed uniformly; (2) high temperature gas extraction method is used to evaporate and remove the solvent to obtain molten polypropylene, and then extrude and granulate to obtain granular products; (3) only Kodak company in the United States is the manufacturer.Liquid phase bulk method The liquid-phase bulk [...]
Polypropylene resin is one of the four general thermoplastic resins (polyethylene, polyvinyl chloride, polypropylene, polystyrene). It is produced by polymerization with propylene as raw material and ethylene as comonomer. The production process of polypropylene mainly experienced several development stages, such as solvent method, solution method, liquid-phase bulk method (including liquid-phase gas-phase combination) and gas-phase method. In the world, the process methods used to produce polypropylene are divided into the following categories: solvent method, solution method, liquid-phase bulk method (including liquid-phase [...]
azumi iri daya ne da na rini, azumi iri daya ne da na rini, azumi iri daya ne da na rini. azumi iri daya ne da na rini (azumi iri daya ne da na rini) azumi iri daya ne da na rini. azumi iri daya ne da na rini. azumi iri daya ne da na rini, azumi iri daya ne da na rini, azumi iri daya ne da na rini, high-ƙarfi inji Properties da kyau high lalacewa-resistant aiki yi, da dai sauransu., wanda ke sa polypropylene ya haɓaka da sauri kuma ana amfani dashi a fannoni da yawa kamar injina, mota, na'urorin lantarki da na lantarki, gine-gine, yadi, marufi, noma, gandun daji, fishery and food industry since it [...]
1. After long-term contact with the outside world, the leather will produce moisture inside. It should always be placed in a ventilated place for drying to prevent bacteria from breeding. It can also be stored with a proper amount of moisture-proof beads. 2. If the leather gets damp inadvertently, it should be absorbed by dry cloth, and then placed in a cool and ventilated place. It should be naturally dried in the shade. It should not be placed in the [...]
Sheepskin The pores on the leather surface are oblate, small and arranged in fish scales. Gabaɗaya, several pores form a group. The leather is soft and elastic. pigskin The pores on the surface of pigskin are round and thick, which are inclined to penetrate into the leather. The pores are generally arranged in a group of three pores. There are many small triangles on the surface of pigskin, with poor elasticity and thick skin. cowhide The surface pores of cattle hide are round, compact [...]
Different types of leather have different characteristics and uses. azumi iri daya ne da na rini, cow leather with thin surface and high strength is the most suitable for making leather shoes; sheepskin leather is light, thin and soft, which is the ideal fabric for leather clothing; pig leather has good air permeability, water permeability and vapor permeability.Pigskin The pores on the surface of pigskin are round and thick, which are inclined to extend into the leather. The pores are arranged in a group of [...]
Tare da hanyoyin gano asali huɗu na sama, za mu iya kwatanta da gane fata da roba fata (fata na wucin gadi da fata na roba suna nufin samfuran da ke da wasu halaye na fata na halitta waɗanda kayan aikin guduro daban-daban ke samarwa da kayan sarrafa kayan aiki ta hanyoyin sarrafawa daban-daban., also known as artificial leather and imitation leather; there is no clear and unified definition between artificial leather and synthetic leather, so there are also some people They are called synthetic leather without distinction. The author thinks [...]
Kallon ido Akwai bayyanannun pores da alamu akan saman fata, m lallausan pores a kan ɓoyayyen shanu, kauri da tarkace pores akan fatar yak, da ma'aunin kifi a fatar akuya. Whether leather surface has pores or not is an important feature to identify leather authenticity.Nasopharynx All leather has the smell of leather, while synthetic leather has a strong plastic smell. light Tear off a little fiber from the back of real leather and artificial leather. When ignited, artificial [...]
Haƙƙin mallaka 2015. Dukkan haƙƙoƙi an kiyaye su ta Kamfanin Polaris Promo Co., Iyakantacce 