■PP EP545L♂ →，PP L10G-00 TPV 123-40 、→，ASA WH50 POM F20-33 、‖。PBT X6320-BK 、→，LDPE LD150 、→，PC690 、→，PA66 RA844 LDPE PEFA5230 、→，PPO GTX8710 、→，PA66 A402 PA6 2710IR 、‖。PP WB140HMS 、‖。PA6 A1030TF ABS 3000 PC K-30 、→，PC 310HF.M 、‖。PA66 PA840G7 PA66 LSG-440A-H 、‖。PC G1920 、‖。PP 52MH648 PA6 B3S 、→，EAA 5890 、‖。PA6 DP2131/20H3.0 PC/ABS GN-5101RF TPU DP1966AW 、‖。PC 50N5006 PC R1900 PC CFH2020 、‖。PP RP100N120 PA6 1018I ABS 760 、‖。PA66 RI001 、→，PMMA CLG960 ABS F1350G10 BK PBT LM1503 PA66 RC003 、‖。PP AZ161 PA66 2026GU501 、→，PA66 A3WR01SW805 PCTA AN004 、→，PA66 PA841 PP 2822E1 、‖。PC BM5225Y 、‖。 5223 、‖。TPV 103-40 PA4T J11 、‖。PBT 2072 EPDM 245 、→，TPEE UE3800 、‖。PP 440LLG201 、‖。PP 1101N 、‖。LCP 3483-1 PA6 KN133HRF 、→，TPE V-572 PBT GP2306FS POM KL004U TPE 2055B|8901 、→，PBT KL1-7033 PP K7025 TPU 120 、‖。PC PG1940 、‖。PP D560.00 、‖。LCP A150F 、‖。PC PC-1100U PC S2001R 、‖。PPS 1140A6 、→，PPO GTX942 ABS EG506 PC G-3410M BK ASA ST4766 HDPE B220A 、‖。PMMA 560F PC/ABS C2801 、→，AS HR-5330S 、‖。TPV 241-73 PC 4704 LDPE LD617.LN TPU 190A PPE AN60 、→，EPDM 24 、→，LDPE 2303FL 、‖。PC/ABS FR3110TV PP J642 、‖。PP 4620WZ 、→，PC/ABS NH-1000TS 、‖。PP RE718CF 、‖。PC EGN2050DF 、→，PP EP600V 、‖。PC 3025IR HDPE MR80U 、→，PP HP401R 、‖。TPEE BT-1063D PC FL920 、→，PP J1400 EPDM 4021 、‖。TPE PB-5302 TPE 2065B/N PA66 AKV325H2.0 PA6 B70 MOS2 、‖。PBT/、→，EBA 4210 、→，CAF PP EA640G 、‖。PP RD239CF 、‖。TPU ALRG500 、‖。TPE S-40AFR 、→，PC/ABS 501.C 、→，PC/ABS F-725G20 、→，PMMA ST50G8 LDPE LD185JD 、→，PP FR-160U 、‖。PC 301-58LT PA66 LC020 PA66 RS78G33FHS PA6 202A S PC 1302HP-07 、→，POM MT754 HDPE PB270 、→，PA6 GP2130AE 、 ■PP EP545L♂PET plastics are the abbreviations of English Polyethylene terephthalate, referred to as PET?or?PETP. Polyterephthalic acid, mainly including Polyterephthalate two ester PET and polybutylene terephthalate PBT. Polybutylene terephthalate is also commonly known as polyester resin. It is a polycondensation of terephthalic acid and ethylene glycol. Together with PBT, it is called a thermoplastic polyester,?or?a saturated polyester. structure History of development In 1941, John Rex Whinfield filed with James Tennant Dickson and their employees in Manchester Calico Printers'Association to apply for patents on PET materials. In 1946, Britain issued the first patent for the preparation of PET. In 1946, the British ICI company completed the pilot test, but after the purchase of patents by the US DuPont Co, the production device was established in 1953, and it was the first industrialized production in the world. The initial PET was mostly used in China commonly known as synthetic fiber, polyester, dacron. Since 80s, PET has made breakthroughs in engineering plastics, and has developed nucleating agents and crystallization promoters. PET and PBT together as thermoplastic polyester become one of the five major engineering plastics. The production scale of PET in our country is far behind the major manufacturers in foreign countries. In 80s, China gradually introduced tens of tens of thousands of tons of advanced PET resin synthesis equipment from abroad, and the quality and production have made great progress. According to the statistics of China Textile society, in 1997, China produced 1 million 740 thousand tons of PET chip resin, and the production capacity of high viscosity packaging chip resin was 224 thousand tons, so the source of PET engineering plastics grade resin is abundant. As the device for mixing and modifying PET plastics and other polymer blending and modifying devices is universal, the manufacture of domestic mixed extruders and so on has also formed a certain scale. So once the market is opened up, the production of domestic PET plastics will also increase rapidly. the way to distinguish There is a more practical and better way to buy an oven to heat it up to 250 degrees, and bake for half an hour there. If the product contains PVC, there will be a lot of yellow spots on the surface. If the melting point is not enough, it will melt quickly. In fact, there are many kinds of PET to do, such as PET smashed film, slurry block and film length less than 30 cm, which have different customer groups. The identification of these goods is strongly required to be tested in the oven. In particular, PET drum is a very scarce source of goods in the whole market. Generally, the length is between 80 and 120 centimeters, and the thickness of 3-5 film is very high (white and transparent). Production process Polymethyl methacrylate, the polymer obtained by polymerization of acrylic acid and its esters is collectively referred to as acrylic ester, and the corresponding plastics are collectively referred to as polyacrylic acid plastics, of which polymethyl methacrylate is the most widely used. The polymethyl methacrylate abbreviation code is PMMA, commonly known as plexiglass, so far, it is the best material and the price is relatively suitable for synthetic transparent materials. Applications: PMMA dissolved in organic solvents, such as phenol, anisole, etc., can be formed by spin coating, and has good dielectric properties. It can be used as a dielectric layer of organic field transistor (OFET), also known as organic thin film transistor (OTFT). PMMA resin is non-toxic and environmentally friendly materials, can be used in the production of tableware, sanitary ware, and so on, with good chemical stability, and weather resistance. PMMA resin is not easy to produce sharp fragments when it is broken. In the United States, Japan and other countries and regions, it has made mandatory provisions in the law. Primary and secondary schools and kindergartens must use PMMA resin for building glass. All over the country accelerated the pace of urban construction, street signs, advertising lights and telephone kiosks and so on. A large part of the materials used were PMMA resin. The outdoor color building materials of the Beijing Olympic project also use a lot of green PMMA resin. R20/22 Harmful by inhalation and if swallowed. Inhalation and swallowing are harmful. Application scope Automotive industry (signal equipment, dashboard, etc.), pharmaceutical industry (blood storage container, etc.), industrial applications (video disc, light diffuser), electronic products buttons (especially transparent). Consumer goods for daily use (beverage cup, stationery, etc.). PMMA dissolved in organic solvents, such as acetone, chloroform, dichloromethane, phenol, anisole and so on, can be formed by spin coating, and has good dielectric properties. It can be used as the dielectric layer of organic field transistor (OFET), also known as organic thin film transistor (OTFT). process conditions Drying treatment: PMMA has a hygroscopic property, so it is necessary to dry before processing. Suggested drying conditions PMMA The United States and Japan have made mandatory provisions in the law. The glass of primary and secondary schools and kindergarten buildings must be acrylic (acrylic). With the continuous improvement of Chinese laws and regulations, it is expected that in the near future, Chinese law will also stipulate that primary and secondary schools and kindergartens must adopt plexiglass (acrylic) as building glass. Meanwhile, the pace of urban construction has been speeded up in various parts of China. Street signs, advertising lights boxes and telephone kiosks have emerged. A large part of the materials used are plexiglass and acrylic materials. Sanitary ware, organic glass acrylic bathtubs with luxurious appearance, a sense of depth, easy cleaning, high strength, lightweight and comfortable to use, has been widely used, the current domestic production of organic glass acrylic bathtub about 1 million 500 thousand, the annual consumption of PMMA Extrusion board?or?pouring plate more than 5000 tons. With the improvement of Chinese architectural laws and regulations, PMMA will be more competitive in more applications. In addition, special plexiglass, such as optical plexiglass, anti radiation plexiglass and optical grade plexiglass, is still blank in China's construction industry, and there is great room for development.