※PC 7020AD└ →，PC ML6412 EVA N1005HB TPU 852S 、‖。TPE 7080N|1002 、‖。PC D2000AXH 、→，PA12 6-8436 TPEE 5552EM 、‖。PC/ABS HAC8250FR 、→，PA12 RD302G6 、→，PP EP341T 、‖。PA66 A HS164 NAT 、‖。PA66 H2-V0 、→，PBT 3330GF ABS AG15E0 、‖。PA66 AZ3 、‖。PA66 TA505 、‖。TPU 100 PA6 V25H2.0LT 、‖。PBT 553 TPE 1070N|1002 EVA E210F PC 2870-21317 、→，PP HP300R TPU 54630 PC 1837 、‖。TPU 1180A 、→，PA66 SE35C 、→，LLDPE TL4110 PC/ABS S1500 、‖。PA66 SC310 、→，PMMA 0F032 、‖。POM LM90 、→，PC/、→，PC/、‖。PC/ABS FR3002 PC/ABS HAC8260 PBT B0420GN PBT B3235 PC/ABS GN-5151RFA 、‖。EPDM 3720P 、→，TPEE 3078FG PC GSH2040R2 、‖。PC 1-9350 、‖。PMMA HP02 ABS D-1000A 、→，PP EP310D 、‖。PBT SEF-530 HIPS HI-E PP 5450 PA12 AZM30NOIRT6LD 、→，EMAA 035 PP TF1300 POM LW90-SC 、‖。PBT CF40-09 TPU 521 EVA F2021 PC DF0081PI 、‖。PP RB200 TPU 11T65D 、→，EVA EB591 、→，PP A-354 PP HF602N 、→，PA6 RC6030F PA6 BM 20R 、→，PA6 8232GHSFR PA66 F-101 PBT SK645FR BK PC LUX2910 、→，PEEK 2200LF 、‖。PA12 L1700 PC AZ2201N5001D BK TPE TF8TRT 、‖。POM MS-02 、→，PA12 LX9105 、‖。PP P901J TPE CL30 PC R2500 、→，PP MD000 PPS C-230SC PP R150L 、‖。PA66 CA2-K BK PA66 GF60-01 、‖。PC/ABS 979 、‖。PP R370Y 、‖。PPO PF6049 PA6 1022MT2 、‖。PA6 CM1001G-30 、→，PBT 325 325F EVA E220F 、‖。TPEE KP3372 PA6 B40FA PBT 721SA PPE G702-GX07602 、‖。TPU 1185A PA66 RF006PS 、‖。PC/ABS GP5300 、‖。PPE LXR045 、‖。PA66 70M30 、→，PA12 AUM30T6LD 、→，PFA P220 、→，PC KV-30FD 、‖。PA66 FR52G15BL PPS XP-2165MC PP 2801 PBT 6400-2 PC/ABS XCM850 、‖。PP AV161 POM M140-L1 ABS 712E 、→，COC 6013F-04 、‖。PC EXL8414 、→，TPU D118K 、‖。TPEE RKX200 、‖。POM DE-20028 、‖。POM KFL36XXC PPS P0833A 、→，PA12 MV1074 PMMA DR-66080 、‖。PA66 450 EVA VA810 TPU LP9286 PBT S7020 、‖。TPE 1370B|8901 PPS 1140L4 、 LDPE Prospects for development 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 company), Application of low density polyethylene Innovene, Samsung (innovene company) Total (Samsung Total) 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-end 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. PC resin is a polar non crystalline polymer, density: 1.380 g/cm3, glass transition temperature: 87 degrees C, so the thermal stability is poor, not easy to process. Can not be used directly, must be modified mixing, adding related additives and filler can be used. It is determined that the properties and requirements of the prepared PVC materials are different because of the different kinds and fractions of the additive and filler. We usually call it a PVC formula, which is strictly a PVC modified formula, and PVC is only modified to use. This class is often classified as polymer modified material. The modification of polymer materials mainly revolves around the high performance of general plastics, the conversion of single component materials to multi component materials and composites, and the functionalization and optimization of materials. In general, PVC should be modified to granulate first, and after the formation of particles by screw extruder, the plasticization is more sufficient and the processing is easier, especially the process is the injection product. The screw extruder is one of the most important equipments in plastic molding. It is used for solid conveying, compaction, melting, shearing and mixing extrusion of plastics through external power transmission and heat transfer of external heating elements. Screw extruders play an important role no matter as plasticizing and granulating machines?or?molding machines. Strictly speaking, there are special requirements for PVC products. PVC modified formula is made according to customer requirements. There are also copolymerization in the PVC production process, such as vinyl chloride copolymers, PVC blends, and chlorinated polyvinyl chloride (PVC) [3]. Performance indicators of PVC modification Colourability The thermal stability and light resistance of PVC are poor. Hydrogen chloride was decomposed at 150 C, with the adverse reaction of the plasticizer content. In addition, the influence of pigment on PVC is reflected in whether pigment is reacted with PVC and other components of PVC products, and pigment itself is resistant to migration and heat resistance. Some of the ingredients in the coloring agent may cause the degradation of the resin. For example, iron ions and zinc ions are the catalysts for the degradation of PVC resin. Therefore, the use of iron oxide (red, yellow, brown and black) pigment?or?Zinc Oxide, zinc sulfide and white pigment lithopone will reduce the thermal stability of PVC resin. Some of the coloring agents may be associated with the degradation products of PVC resin. Such as ultramarine pigment acid resistance is poor, so in the PVC coloring process, with the PVC decomposition of hydrogen chloride produced by the interaction of losing their color. Therefore, as far as PVC coloring is concerned, the characteristics of the resin and related auxiliaries are considered, and the characteristics of the pigments are combined. The following problems should be paid attention to when choosing a colorant. [4]