PP RP229N█PP RP229N ‖。PP C702-20 、‖。POM S781 PA66 R2000 TPV A74BU PBT 3300-2FC ABS HFA700 、→，EVA VF110S LDPE PCG00 、‖。PP 8191 、→，PMMA HBS010P 、‖。PC HL-4000 TPEE 5450(B) 、‖。PMMA HFI-7 PP F-401 PC DE0029EF 、→，PP 2311KXTA4 TPE 8203-45 、‖。PPS OCL-4036 PA66 RFN14 POM TE-21 、→，TPU 385S 、→，EVA 456 PC SC-1004 、‖。PA66 75CG30HSL 、→，PC/ABS FR3005B 、→，TPU 560D 、‖。PP J740 、→，PP MR2002 PC/ABS HAC-8260 、‖。PPO HFM4025-BK 、‖。POM JW-01 、‖。PA66 91G60 、→，PP HP527J 、‖。POM 1700P 、‖。PC 201-10 、‖。TPEE GPV55B1 、→，PP XG3U10 EVA 1003VN4 PC CGH1010R2 PA66 HTN54G50HSL 、‖。PP T2502 PA6 KNX1014 、‖。PC GZK3200 PP HM-4354 PPS PELLET TPE TX-5045 LCP UM 1500/300 、→，PC/ABS 2581CHECFR 、‖。PA66 DP2-2851 ASA LI-941 FEP 100 、→，PP HP520H 、→，THV FE5660Q 、‖。PC RZ300G6 PMMA 1205 PC RE1900 POM N23200035LEV PC/ABS CE8510 PC DFD03 TPV 3445DN 、‖。PPS GS-40-31/3202 、→，TPEE HTR8206 、‖。ABS TR-558A 、→，TPEE 3078 、‖。PMMA BM-717 、‖。PP 2550-4 POM GC-10 PMMA L HDPE HP132 、→，PBT 1100M POM W2320-003 、‖。 30E753 、‖。PC ML-3104ZHP TPU S160D 、‖。PP RB709CF PA66 RCF-1006 HP 、‖。ABS PA-749K PMMA 8N COC 6013EC-01 、‖。POM H2320004 HDPE HDKEO51Z 、‖。POM N2644Z9 、‖。PP 9020 LDPE PE610A 、‖。PC/ABS HI5002A 、‖。POM AW-02 BK 、‖。TPE TS9AAZ 、‖。PBT 6500 、‖。PC GS-2020MR2 、‖。PA6 PFD06 、‖。TPV 6165N 、→，MBS TH-23 、→，PBT ENH2900 PP 3045 TPU DP85085A 、‖。POM FX-11J PP F1022B 、‖。PPO PKN4766 、‖。PPS 1140A 、→，PBT WX07423H 、→，EVA BM05-2 TPE TC5HTT PBT B1600 、‖。PA6 NX4569 BK HDPE ME5500 、‖。TPU PS443-201 、‖。 LD723.28C、→，氟橡膠 B-202 PC/ABS NF002 、→，PA66 RC006XXH TPE 7050B|8901 、‖。PA6 PF-30 BK 、‖。ABS N NG-04 、‖。PP 6524 PC 223R-111 PP FH44C TPE TF5ATL TPE B1700 、→，MDPE ME3441AG LDPE F6102 、 LLDPE The production of LLDPE begins with the transition metal catalyst, especially the type of Ziegler (Ziegler)?or?PHILPS Phillips. A new process based on the catalyst for the cyclic olefin metal derivatives is another option for LLDPE production. The actual polymerization can be carried out in the solution and gas phase reactor. Both LDPE and LLDPE have excellent rheological?or?melt fluidity. LLDPE has smaller shear sensitivity because it has a narrow molecular weight distribution and a short branched chain. During the shear process (for example, extrusion), LLDPE maintains a greater viscosity, and thus is difficult to be processed than the same melting index of LDPE. In extrusion, the lower shear stress of LLDPE makes the stress relaxation of polymer chains faster, and the sensitivity of physical property to the change of blow up ratio is reduced. In the melt extension, LLDPE usually has lower viscosity at various strain rates. That is to say, it will not strain hardening as the LDPE is stretched. The increase in the deformation rate of polyethylene (.LDPE) shows an astonishing increase in viscosity, which is caused by molecular chain entanglement. This phenomenon is not observed in LLDPE, because the lack of long branched chains in LLDPE makes the polymer not entangled. This performance is very important for the application of thin films, because the LLDPE thin films are easy to make thin films under high strength and toughness. Classification /LLDPE LLDPE Atlas According to the type of copolymerized monomers, LLDPE is mainly divided into 3 kinds of copolymers: C4 (butene -1), C6 (hexene -1) and C8 (octene -1). Among them, butylene copolymer is the largest LLDPE resin in the world, while hexene copolymer is the fastest growing LLDPE variety at present. In the LLDPE resin, the typical dosage of the copolymerized monomer is 5% to 10%, with an average amount of about 7%. The metallocene based LLDPE plastic body (mLLDPE) has more than 3 times the average content of the average copolymerized monomer of the traditional LLDPE. Figure 1 shows that the world is 10 years since their 3 monomers yield of LLDPE. At the end of 1984, the co carbon company introduced the production of hexene copolymerized LLDPE, followed by Exxon, Mobil and other companies. Dow Chemical (Dow Chemical Company) almost used octylene as comonomer in its low pressure solution process, and NOVA Canada (Nova chemical) also used octylene in most of the pressure solution process. The copolymerization of octyl LLDPE resin has a little good strength, tearing resistance and processing property, but the properties of hexene copolymerization and octyl copolymers have little difference. Hexene LLDPE resin manufacturers including ExxonMobil Chemical (Exxon Mobil chemical company), Eastman Chemical (Eastman Chem Co), Equistar (star company) and Chevron Phillips (Chevron Phillips chemical company) etc.. In addition, Dow Chemical (Dow Chemical Company), Basell (Basel), Innovene (Samsung, Total, innoven) (Samsung Total (micro-blog), etc.) also produce 1-hexene LLDPE. Compared with the commonly used butene copolymers, the LLDPE produced by hexene and octene as copolymerized monomers has better performance. The largest use of LLDPE resin in film production, with a long chain alpha olefin (such as cyclohexene, 1-octene) as comonomer production of LLDPE resin and film products in the tensile strength, impact strength, tearing strength, penetration resistance, environmental stress cracking resistance and many other aspects are better than by butene as comonomer to produce LLDPE resin. Since 1990s, PE manufacturers and users in foreign countries tend to replace butylene with hexene and octene. It is reported that using octene as comonomer, the performance of resin is not necessarily better than that of hexene copolymerization, and the price is more expensive. Therefore, the trend of using LLDPE abroad to replace butene is more obvious. Because there is no large-scale production of hexene and octene in China, and the import price is more expensive, the LLDPE resin currently used in China is mainly used as butene as comonomer. Some enterprises in China used the LLDPE as the monomer of the comonomer when they introduced the production plant, but they had to give up because of the production of no hexene in China, and only imported a small amount of hexene when driving. Most of the high grade LLDPE imported from China are such products. It is expected that in the future, there will be a greater increase in the demand for LLDPE with 1- hexene as a monomer. Performance /LLDPE Cold tolerance of LLDPE, the relationship between catalytic temperature and melt flow rate of LLDPE brittle temperature than LDPE, HDPE are low, which indicates that the resistance to low temperature. Physical and mechanical properties MDPE molecular structure In the main chain of MDPE molecule, there are 20 methyl branched chains?or?13 ethyl branched chains on the average of every 1000 carbon atoms, and their performance depends on the number and length of branched chain. Copolymerization can increase the link chain between small crystals of its crystal Performance characteristics and parameters MDPE is characterized by long term retention of resistance to environmental stress and strength. The relative density of MDPE is 0.926-0.953, the crystallinity of 70%-80%, the average molecular weight is 200 thousand, the tensile strength is 8-24 MPa, elongation at break of 50%-60%, the melting temperature of 126-135 DEG C, the melt flow rate of 0.1-35 g /10 minutes, the heat deformation temperature of 49-74 DEG C (0.46 MPa). Processing technology It is divided into three kinds: high pressure method, low pressure method and medium pressure method. High pressure method is used to produce LDPE. This method has been developed very early. Polyethylene produced by this method accounts for about 2/3 of the total output of polyethylene. However, with the development of production technology and catalyst, its growth rate has lagged behind the low pressure method. The low pressure method includes slurry method, solution method and gas phase method for its application. Slurry method is mainly used to produce HDPE, while solution method and gas phase method can not only produce HDPE