PP 1104K╪PP 1104K ‖。TPE 6502-NA 、‖。TPU 803TU PC IV2200R 、‖。PC 241R-111 PA6 PB841 EVA 40-55 、‖。PA6 S60G1V30 PC EGN-2030DF PA66 684 POM WR301LO 、‖。PPS A400M-D1 PA6 C50H2 、‖。PC FXR123R PA66 2300MR 、→，PPE PX603 、‖。POM FG500P PC/ABS FXC810AL 、→，PP JM-365 、→，POM 7520 、→，PP KPG1030 、→，LDPE L420 TPV 121-55 、‖。PC 3022L1(SL) 、‖。PP H00M-01 、‖。TPU E695A10U 、‖。PP EP440R LDPE 4303 、→，PC GPN2020DF PPS J-1305/30/TF/15BK5 、→，PP P2813GN 、→，EPDM G8850 、‖。PC PC0700 PBT 457 、‖。TPU A85P4441 、‖。PC DE006P PBT B1305 、→，TPU E1150 PP 2315A 、‖。PP 214 PA66 AKV30H3.0 、‖。PA6 B35EG3 PA6 H2G/30V0CT1 、→，PBT GF30-08 、‖。PA66 RF002 、→，ETFE 2X98703 、→，PA66 GF50-20AD3007 、→，EPDM 4038 PEI ATX200R LDPE LD641.LN POM 7510 、→，PC/ABS 2100LG 、‖。POM MT8R02 PA66 RX89047 、→，PSU 1000 、‖。PA66 AF218V40 、‖。PMMA TS1778 PC GSV2010R2 BK 、‖。PP C719-35RNHP PA66 FG170 ABS PA-717 LDPE LD145.PX HDPE F00851 、→，PP R12232 UHMWPE X201 、‖。PPS CX160050BK PA46 TC154 、→，PC FXE1414T 、→，PBT B6550FC 、→，PMMA 0A770 、→，PP P0513GN 、‖。PBT B4300K6 、→，LLDPE DU6600 、‖。PP F-400H 、‖。PP 3336MC HDPE M5350 、→，PBT B4450G5 、‖。PA66 A3GE6 、→，PP H4050 、→，PC GSH2030SR 、‖。PP 7253X PC 5420G4 、‖。PC IB2500 POM M25N PC 2034 PA66 AKV30GH2.0SR1 PC LUX2910T PBT SK655FR1 NC 、→，EPDM 4033 PPS 6150T6 TPV W750B 、‖。PA66 KN333G30 、‖。PP FH51 PA66 KN333G30BL BK PPO PX1712 、→，PTFE XL PMMA IH830HR 、→，PP GH23 、→，EVA HS102C PC LS-1250SG BK PP K4038 、‖。PA66 A24E01 、→，PA6 1010GN7 、‖。PBT SK643FR 、→，PP J-5900 、→，EPDM 4045 EVA TN2020 、‖。PC GP1006FM 、‖。PPO GTX8721 、‖。TPU K-792A 、→，PP 0405KU 、→，MPR 4070BK 、 PP 1104K╪PP 1104KPET 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.