PE quvurlari va HDPE quvurlari o'rtasidagi farqlar

PE quvurlaripolyethylene-pipe are made of polyethylene plastic. Plastmassaning eng asosiy turi sifatida, Polietilen ko'pchilik maishiy va sanoat kimyoviy moddalariga mukammal qarshilikka ega. Common items like plastic bags and cling film are made of PE.

Polyethylene pipes can be generally classified into three types: past zichlikdagi polietilen quvurlar (LDPE quvurlari), o'rta zichlikdagi polietilen quvurlar (MDPE quvurlari), va yuqori zichlikdagi polietilen quvurlar (HDPE quvurlari).

I. Low-Density Polyethylene (LDPE for short)

Low-density polyethylene is usually produced by high-pressure polymerization, with a density of 0.910-0.925g/cm³. The molecular structure of LDPE is a linear macromolecule with many side chains. The varying lengths of these side chains on the main chain affect the regularity of macromolecular arrangement, making the packing loose and hindering the crystallization of polyethylene. Shuning uchun, its crystallinity is only 55% – 65%. LDPE has a low melting point and is soft. Uzoq yon zanjirlar ishlov berish jarayonida yuqori kesish tezligida past yopishqoqlikni va cho'zish paytida yuqori erish quvvatini beradi., making it very suitable for blow molding processes. It is mainly used in the production of agricultural films and heavy packaging films.

II. Medium-Density Polyethylene (Qisqacha MDPE)

Medium-density polyethylene is produced using efficient catalysts under medium and low pressure through copolymerization with α-olefins to control its density (0.926-0.940g/sm³), kristallik bilan 70%-80%. Ko'p sonli va uzun yon zanjirlar tufayli, the density and crystallinity decrease, giving MDPE better flexibility and low-temperature properties. Biroq, its tensile strength, qattiqlik, and heat resistance are inferior to those of high-density polyethylene. The copolymerization of olefins increases the interlamellar connection chains in the MDPE crystal, significantly improving its resistance to slow crack growth and long-term mechanical strength retention compared to LDPE. MDPE can be used in the production of pressure pipes, etkazib berish quvurlari, various containers, and packaging films.

III. Yuqori zichlikdagi polietilen (Qisqasi HDPE)

Yuqori zichlikdagi polietilen (HDPE) is produced by low-pressure polymerization, presenting a linear structure with a density of 0.94-0.965g/cm³ and a crystallinity of 80%-95%, appearing as white powder or granules.

Compared to low-density polyethylene, HDPE has fewer side chains and is nearly linear in structure, with regular molecular arrangement and tight packing. Shuning uchun, it has a high crystallinity and density, with a relative molecular weight of hundreds of thousands to millions, va eritma oqim tezligining tor diapazoni. HDPE has high rigidity and toughness, excellent mechanical strength and heat resistance, as well as good resistance to deep agents and steam permeability. Among all types of polyethylene, HDPE has the lowest permeability and the strongest corrosion resistance, and also has good stiffness. It is mainly used in the production of various pressure pipes and injection-molded products.

Shuning uchun, HDPE pipes are a type of PE pipe, but compared to ordinary PE pipes, HDPE pipes have superior performance, which can be summarized as follows:

Different pressure-bearing capacity: HDPE pipes must withstand certain pressure, and usually require PE resins with high molecular weight and good mechanical properties, such as HDPE resins, which have a strength nine times that of ordinary polyethylene pipes (PE quvurlari).
Different wear resistance: Barcha muhandislik plastmassalari orasida, HDPE has the best wear resistance. Molekulyar og'irlik qanchalik baland bo'lsa, the more wear-resistant the material becomes, even surpassing many metal materials (uglerodli po'lat kabi, zanglamaydigan po'lat, bronza, va hokazo.). The wear resistance of ordinary PE is only one-tenth that of HDPE.
Different applications: Umumiy pe quvurlari (o'rta zichlikdagi polietilen quvurlar) gazsimon sun'iy gazni tashish uchun javob beradi, tabiiy gaz, and liquefied petroleum gas, while low-density polyethylene pipes are used as soft pipes. HDPE quvurlari (yuqori zichlikdagi polietilen quvurlar) asosan tabiiy gazni tashish uchun ishlatiladi, municipal water supply systems, indoor water supply systems in buildings, outdoor buried water supply systems, and buried water supply systems in residential areas and factories, as well as for the repair of old pipelines, water treatment pipeline systems, va bog'larda sanoat suv quvurlari, sug'orish, and other fields. HDPE pipes can be used as the successor to traditional steel pipes and polyvinyl chloride drinking water pipes, but ordinary PE pipes cannot.

Yetkazib beruvchi

Luoyang Datang Energy Tech Co.Ltd yuqori sifatli plastik quvurlar va armatura ishlab chiqarishga ixtisoslashgan yetakchi Xitoy ishlab chiqaruvchisi. Eng zamonaviy avtomatlashtirilgan ishlab chiqarish liniyalari bilan jihozlangan va bir guruh tomonidan qo'llab-quvvatlanadi 200 mutaxassislar, ustidan o'z ichiga olgan keng mahsulot qatorini taklif etamiz 150 suv ta'minoti va drenaj tizimlari uchun mo'ljallangan plastik quvurlar va armatura turlari, gaz uzatish, va poldan isitish tizimlari. Bizning asosiy mahsulotlarimiz PVX quvurlari va armaturalarini o'z ichiga oladi, PE (HDPE) Quvurlar va armatura, PPR quvurlari va armaturalari, va PEX pol isitish quvurlari.