TPU 58237卐TPU 58237 ‖。PC D-2000 TPV 8291-85TL PC G-3430R ASA EXGY0022-GY 、‖。TPE GN7142F PC SLX1432T PP ZR3 TPE SB2710 PC TC-8001B 、→，PC566H3 、→，PA11 BMFO LDPE 640I ABS 530 PPS A625H 、‖。PA66 HTNFR52G30BL POM 500SC POM M90-71 PC/ABS T95 TPE ATA8AON 、→，PTFE 140 、‖。PC 121R GY9B278 、→，PA6 HFX32 PBT S650FR 、→，TPV 101-87 、→，PC ET3113 、‖。PBT 412 、→，PP JHC-372 、‖。PA6 PN09(E) HDPE 8301B TPEE 40D 、‖。PA6 NGF1220 、‖。PA6 1900SE 、‖。COC 9506F-04 、→，PA12 X7297 、→，GPPS 671-4BM 、‖。PBT SV-1120M 、‖。PBT 3020-104S 、‖。PP P9335 、→，APAO 792 、‖。PPO ZEF061XC 、‖。PP H20BLME 、→，EVOH K102 、‖。TPE EL250 、→，LDPE H0100 ABS 2863 、‖。TPE HT45 、→，EVA AFDP1171/1/270 PA6 T-422VOR HDPE BM3245 、‖。ABS 755A PA66 RX09411H 、‖。POE DF740 、→，TPV 9201-55 、‖。TPV 24580 、→，PC/ABS FR3012 、‖。PC/ABS DN-1530B 、‖。PP 1320 、‖。PA6 BG-50HM 、→，TPV HX-080AB POM F20-S1 PC/ABS CKF50G20 、→，EPDM 378Z PBT B4225 POM KZL16 、‖。PA66 FR15， PP 1128N 、→，PA6 BKV115 、‖。PC/ABS 3010 PA6 C218V30 PMMA 93000LTH PC/ABS HP-1001 、→，TPE DGX7604 LDPE 1550A PP 1640 、→，LLDPE E36A060 、‖。TPE G7960-1001-00 PC/ABS CF210M ABS 772 、‖。PA66 AG-30/10 LF TPU 523 、→，PA66 RF006H POM DE20242 BK HDPE PE R903U ABS HFA-804 、‖。PA66 SX30CW 、‖。PP V7104 AS C552485 ABS P2MC PA6T HTN51G35HSL 、→，TPU R3000 、→，POE 7151M1HF 、‖。TPU A78E4506 、→，TPX 960 、‖。TPU U-98A20 、‖。LCP 1335MT PA46 46HF4130 、‖。PPS SGX-140 、‖。PP FPU1112 LLDPE FB8230 、→，POM TC704 PA6 B700 G25H BK 、→，PA6 B3EG3 、→，LDPE LDI300YY 、‖。PBT 2004 TPU 1185A 、‖。PC/ABS C1100HF-701 、‖。PBT B4300G4 、‖。PC/ABS TN-7200B PP AA56H 、‖。PA66 TN720SG30 TPV 241-55 PC LN-2250Y PA66 RAL23 PP MFB419 、‖。PA46 EN568 GY 、‖。TPU A98E4066 、‖。PC GRH2030KR 、 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]