PP 3401↙PP 3401 →，XLPE FR4832 PC/ABS GN-5001RF BK PP HP500N 、→，POM C9021SW PP F3-045 、→，LDPE LD653 PBT 2003-2 、→，PP 910GA3 、‖。TPU R380 、‖。PP 1600 、→，PP KS001PF 、→，LDPE PE-019, PC OQ3820 、‖。PA66 A225F PPS A504X90 、→，PA12 3014U 、‖。TPV 121-79W233 、‖。PP 4101T 、‖。PA66 RX03643H PC/ABS BB-000/10T-2S 、→，MDPE RG400U 、‖。PC 100 、→，PC/ABS EMI2583 LDPE 132I 、→，LLDPE 8400F PBT GB30SCHWARZ ABS DP03H TPE TC5MGZ PP WG140AI PC 7022IR HDPE B5822 、‖。PP-101S 、→，ETFE RTP3205R POM K2000XXH POM H2320004 PC 121-111N 、→，EVA FL00218 、‖。TPU 150（粉） 、→，PA66 RV00AEX5 、‖。PC KO1365H TPE OM 1255NX-1 、‖。PC/ABS AC3100 、→，EVA GT140 、‖。PC DN-3110P 、→，PC/ABS GP5006BH 、‖。PA12 LV-2ANZ 、→，PP 2030 、‖。PPS EC-10 HDPE HHMTR480AT PC 3027U(7) 、‖。PC 1248 、‖。PA66 AG-20/10 V0 PP RP348T PP JM-380 、→，PA46 TW272B6 ABS AF-348 、‖。PC ML-300 PP HC116FB 、‖。PEI JD4901 、→，EPDM 7341A 、‖。PPS FZ-1140-R5 、‖。ABS 844V BK 、→，EVA VA19 、→，DAP 52-70-70V0-P PBT TV4261/A TPV 591-73 PBT 7400W LDPE 15803 、‖。 EF522 、‖。POM FA2010 ABS PA-763 EVA EF440 PA12 X7373 、→，PC 3030PJ 、→，PC GZ2540 PA6 LW4409A 、‖。PC VRY2000 PP 3362 TPEE 8626 PC DL002E 、‖。PP 1101R 、‖。PBT S7020 EVA EV305 PP H1045 、‖。PA66 A3X2G10 、‖。PA66 A RV 300RKC 、‖。TPE TC6TPN LDPE 2004TX37 、‖。PA66 RX98372H PBT 2000-201D 、→，PA12 EX9200 TPE TC8PAN POM C27021XAPLS 、‖。PP CWE1020 PP 2325N POM LU-02 、→，PES 3410CF 、‖。PP 3980FL 、→，PA66 R1000SU PP MFK42AS PC 2608 、‖。PA66 A50GFL 、→，PC/ABS 2583FR TPV 2800B-40D HF PP EPR600 PBT CS815WC ABS ST-0185 、‖。PC GN1002FH PC 945 、‖。TPV 8223-35 TPE TP6CCN PA66 RB-100-10 、‖。PPS HGR51 PC PZ333G2 、‖。PBT 3710G SURLYN 1706 、→，LLDPE L6090 、‖。PBT T7331-POS151 、‖。TPE TC6GPZ-S340 PC DS0036IC 、‖。PP P340 、‖。TPE API IA 65 SV/P 、→，PP BJ22GC PA6 1330GFH 、 PP 3401↙PP 3401PET 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.