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Polymer engineering

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77:, which has turned natural rubber into a practical engineering material. In 1870, J. W. Hyatt uses camphor to plasticize nitrocellulose to make nitrocellulose plastics industrial. 1907 L. Baekeland reported the synthesis of the first thermosetting phenolic resin, which was industrialized in the 1920s, the first synthetic plastic product. In 1920, H. Standinger proposed that polymers are long-chain molecules that are connected by structural units through common covalent bonds. This conclusion laid the foundation for the establishment of modern polymer science. Subsequently, Carothers divided the synthetic polymers into two broad categories, namely a polycondensate obtained by a polycondensation reaction and an addition polymer obtained by a polyaddition reaction. In the 1950s, K. Ziegler and G. Natta discovered a coordination polymerization catalyst and pioneered the era of synthesis of stereoregular polymers. In the decades after the establishment of the concept of macromolecules, the synthesis of high polymers has achieved rapid development, and many important polymers have been industrialized one after another. 392: 1045: 1917: 1787: 1947: 336: 1937: 1927: 371:(LLDPE). Among them, HDPE has better thermal, electrical and mechanical properties, while LDPE and LLDPE have better flexibility, impact properties and film forming properties. LDPE and LLDPE are mainly used for plastic bags, plastic wraps, bottles, pipes and containers; HDPE is widely used in various fields such as film, pipelines and daily necessities because its resistance to many different solvents. 203:
melted or softened again. Common thermosetting plastics are phenolic plastics, epoxy plastics, aminoplasts, unsaturated polyesters, alkyd plastics, and the like. Thermoset plastics and thermoplastics together constitute the two major components of synthetic plastics. Thermosetting plastics are divided into two types: formaldehyde cross-linking type and other cross-linking type.
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resin is used as a main component, and a plastic which forms a product is formed by a cross-linking curing process in combination with various necessary additives. It is liquid in the early stage of the manufacturing or molding process, and it is insoluble and infusible after curing, and it cannot be
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refers to a continuous or discontinuous filament of one substance. Animals and plant fibers play an important role in maintaining tissue. Fibers are widely used and can be woven into good threads, thread ends and hemp ropes. They can also be woven into fibrous layers when making paper or feel. They
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generally refers to a material that can be restored to its original state after removal of an external force, whereas a material having elasticity is not necessarily an elastomer. The elastomer is only deformed under weak stress, and the stress can be quickly restored to a polymer material close to
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and a large molecular weight, often greater than several hundred thousand. Highly elastic polymer compounds can be classified into natural rubber and synthetic rubber. Natural rubber processing extracts gum rubber and grass rubber from plants; synthetic rubber is polymerized by various monomers.
286:. Resin accounts for approximately 40% - 100% of the total weight of the plastic. The basic properties of plastics are mainly determined by the nature of the resin, but additives also play an important role. Some plastics are basically made of synthetic resins, with or without additives such as 382:
is widely used in various applications due to its good chemical resistance and weldability. It has lowest density among commodity plastics. It is commonly used in packaging applications, consumer goods, automatic applications and medical applications. Polypropylene sheets are widely used in
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refers to a plastic that has heat softening and cooling hardening properties. Most of the plastics we use in our daily lives fall into this category. It becomes soft and even flows when heated, and the cooling becomes hard. This process is reversible and can be repeated. Thermoplastics have
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are also commonly used to make other materials together with other materials to form composites. Therefore, whether it is natural or synthetic fiber filamentous material. In modern life, the application of fiber is ubiquitous, and there are many high-tech products.
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are used most commonly because they have lower cost to produce and are easy to modify their surface, which make them suitable in different separation processes. Polymers helps in many fields including the application for separation of biological active compounds,
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the original state and size. Elastomers are polymers which have very low moduli and show reversible extension when strained, a valuable property for vibration absorption and damping. They may either be thermoplastic (in which case they are known as
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refers to highly elastic polymer materials and reversible shapes. It is elastic at room temperature and can be deformed with a small external force. After removing the external force, it can return to the original state. Rubber is a completely
443:. The quite different physical properties of composites gives designers much greater freedom in shaping parts, which is why composite products often look different from conventional products. On the other hand, some products such as 478:. Not like non biodegradable polymers, they won't require a second step of a removal from body. Biodegradable polymers will break down and are absorbed by the body after they served their purpose. Since 1960, polymers prepared from 383:
industrial sector to produce acid and chemical tanks, sheets, pipes, Returnable Transport Packaging (RTP), etc. because of its properties like high tensile strength, resistance to high temperatures and corrosion resistance.
274:. It is free to change the composition and shape. It is made up of synthetic resins and fillers, plasticizers, stabilizers, lubricants, colorants and other additives. The main component of plastic is 278:. Resin means that the polymer compound has not been added with various additives. The term resin was originally named for the secretion of oil from plants and animals, such as 1892: 69:
The history of human use of polymers has been long since the mid-19th century, when it entered the chemical modification of natural polymers. In 1839,
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are widely used materials for many biomedical and pharmaceutical applications. These polymers are considered very promising for controlled
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The word “polymer” was introduced by the Swedish chemist J. J. Berzelius. He considered, for example, benzene (C
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and processing of polymers and description of major polymers, structure property relations and applications.
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Ho, Peter K. H. (2000-03-30). "Molecular-scale interface engineering for polymer light-emitting diodes".
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Ho, Peter K. H. (2000-03-30). "Molecular-scale interface engineering for polymer light-emitting diodes".
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Constitutive Equations for Polymer Melts and Solutions : Butterworths Series in Chemical Engineering
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of these materials, they have physical properties more similar to traditional engineering materials like
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Rodriguez, Ferdinand; Cohen, Ferdinand; Ober, Christopher K.; Archer, Lynden (2003-07-29).
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look identical to metal precursors owing to the basic functional needs of such components.
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are successfully used in the separation in the liquid and gas systems for years, and the
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are popular for drug delivery system due to their fast and adjustable degradation rate.
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Rubber can be used as elastic, insulating, water-impermeable air-resistant materials.
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use an increasing proportion of composites in their fuselages, such as hydrophobic
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devices. Biodegradable polymers also offer great potential for wound management,
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Bartosz Tylkowski; Karolina Wieszczycka; Renata JastrzÄ…b, eds. (2017-09-25).
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was the first all-composite aircraft, but many passenger aircraft like the
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Sharma, Rajiv (January 1991). "Convenient use of applicators for PTLC".
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Polymer modification : principles, techniques, and applications
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Forensic Polymer Engineering: Why polymer products fail in service
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Electronic Technology / Semiconductor / Integrated Circuit
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have found a multitude of uses in the medical industry.
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composite bicycle with aerodynamic wheels and aero bars
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materials. Polymer engineering covers aspects of the
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Nature Publishing Group: 481–484. 458: 222:when reinforced with stiff fibers such as 149:, all of which are widely used materials. 823:Principles of Polymer Systems 5th Edition 579:Category:Polymer scientists and engineers 97:helps define their areas of application. 527:Petroleum / Chemical / Mineral / Geology 493: 419:, as well as more mundane products like 390: 334: 765:"Thermoplastics :: PlasticsEurope" 736:, Springer US, 2008, pp. 327–364, 640: 1964: 1893:Electrical and electronics engineering 674:Rezwan, K.; Chen, Q.Z.; Blaker, J.J.; 597: 545:Machinery / Equipment / Heavy Industry 1094: 1926: 1039: 518:for carbon dioxide capture process. 85:The basic division of polymers into 1936: 13: 692:10.1016/j.biomaterials.2006.01.039 218:, all of which are used widely in 14: 1988: 641:Meister, John J. (25 July 2000). 474:devices, dental applications and 100: 80: 1945: 1935: 1925: 1916: 1915: 1785: 1080:Lewis, Peter Rhys, and Gagg, C, 1043: 521: 374: 1120: 1074: 1003: 989: 965: 548:Medical equipment / instruments 369:linear low density polyethylene 350: 330: 906: 847: 814: 781: 757: 714: 667: 634: 591: 58:) to be a polymer of ethyne (C 1: 600:Journal of Chemical Education 584: 386: 193: 152: 1143:List of engineering branches 1084:, Woodhead/CRC Press (2010). 742:10.1007/978-0-387-73861-1_10 530:Raw materials and processing 324:glass transition temperature 253: 7: 722:"Nonlinear Viscoelasticity" 552: 536:Automobiles and spare parts 10: 1993: 788:Larson, Ronald G. (2014). 258: 117:which make them ideal for 45: 1911: 1858: 1842: 1794: 1783: 1558: 1500: 1419: 1344: 1271: 1164: 1151: 1128: 365:high density polyethylene 309: 190:and fluorinated rubbers. 676:Boccaccini, Aldo Roberto 361:low density polyethylene 297: 236:thermoset polymer matrix 164:Thermoplastic elastomers 1977:Engineering disciplines 1804:Bachelor of Engineering 1646:Engineering mathematics 977:omnexus.specialchem.com 459:Biomedical applications 359:can be classified into 1903:Structural engineering 1898:Mechanical engineering 1641:Engineering management 1052:This section is empty. 769:www.plasticseurope.org 574:Medical grade silicone 464:Biodegradable polymers 400: 347: 342:stealth bomber of the 32:petrochemical industry 1883:Aerospace engineering 1796:Engineering education 494:Membrane technologies 394: 338: 1824:Graduate certificate 792:. Elsevier Science. 206:Thermosets includes 1809:Bachelor of Science 1651:Engineering physics 1635:Engineering drawing 1157:Interdisciplinarity 1012:Polymer Engineering 927:2000Natur.404..481H 868:2000Natur.404..481H 612:1991JChEd..68...70S 503:polymeric membranes 499:Membrane techniques 488:Polylactates (PLAs) 322:polymer with a low 270:polymerization and 246:, so are ideal for 220:composite materials 20:Polymer engineering 1411:Telecommunications 1316:Naval architecture 476:tissue engineering 451:rotor blades, and 401: 348: 1959: 1958: 1888:Civil engineering 1834:Licensed engineer 1829:Engineer's degree 1781: 1780: 1613:Building services 1596:Health technology 1457:Chemical reaction 1406:Signal processing 1072: 1071: 686:(18): 3413–3431. 559:Materials science 188:styrene-butadiene 119:consumer products 1984: 1949: 1939: 1938: 1929: 1928: 1919: 1918: 1789: 1376:Electromechanics 1162: 1161: 1115: 1108: 1101: 1092: 1091: 1067: 1064: 1054:You can help by 1047: 1040: 1034: 1033: 1007: 1001: 1000: 993: 987: 986: 984: 983: 969: 963: 962: 935:10.1038/35006610 910: 904: 903: 876:10.1038/35006610 851: 845: 844: 818: 812: 811: 785: 779: 778: 776: 775: 761: 755: 754: 735: 726: 718: 712: 711: 671: 665: 664: 638: 632: 631: 620:10.1021/ed068p70 595: 539:Other industries 403:Typical uses of 272:polycondensation 123:medical products 71:Charles Goodyear 22:is generally an 1992: 1991: 1987: 1986: 1985: 1983: 1982: 1981: 1962: 1961: 1960: 1955: 1907: 1854: 1838: 1814:Master's degree 1790: 1777: 1691:Instrumentation 1554: 1496: 1462:Electrochemical 1415: 1401:Radio frequency 1340: 1267: 1231:Municipal/Urban 1155: 1153: 1147: 1124: 1119: 1088: 1077: 1068: 1062: 1059: 1038: 1037: 1022: 1008: 1004: 995: 994: 990: 981: 979: 971: 970: 966: 911: 907: 852: 848: 841: 819: 815: 800: 786: 782: 773: 771: 763: 762: 758: 752: 733: 724: 720: 719: 715: 672: 668: 653: 639: 635: 596: 592: 587: 564:Polymer science 555: 524: 508:proton exchange 496: 461: 411:structures for 389: 377: 353: 333: 312: 300: 261: 256: 248:safety-critical 234:stabilises the 208:phenolic resins 196: 180:polychloroprene 155: 125:. They include 109:relatively low 103: 83: 65: 61: 57: 53: 48: 17: 12: 11: 5: 1990: 1980: 1979: 1974: 1957: 1956: 1954: 1953: 1943: 1933: 1923: 1912: 1909: 1908: 1906: 1905: 1900: 1895: 1890: 1885: 1880: 1879: 1878: 1873: 1864: 1862: 1856: 1855: 1853: 1852: 1846: 1844: 1843:Related topics 1840: 1839: 1837: 1836: 1831: 1826: 1821: 1816: 1811: 1806: 1800: 1798: 1792: 1791: 1784: 1782: 1779: 1778: 1776: 1775: 1770: 1765: 1763:Sustainability 1760: 1755: 1750: 1745: 1740: 1735: 1730: 1725: 1720: 1715: 1710: 1705: 1700: 1699: 1698: 1688: 1683: 1678: 1673: 1668: 1663: 1658: 1653: 1648: 1643: 1638: 1632: 1627: 1625:Geoengineering 1622: 1621: 1620: 1610: 1609: 1608: 1606:Rehabilitation 1603: 1601:Pharmaceutical 1598: 1593: 1588: 1586:Bioinformatics 1578: 1573: 1568: 1562: 1560: 1556: 1555: 1553: 1552: 1547: 1545:Semiconductors 1542: 1537: 1535:Nanotechnology 1532: 1527: 1522: 1517: 1512: 1506: 1504: 1498: 1497: 1495: 1494: 1489: 1484: 1479: 1474: 1469: 1464: 1459: 1454: 1453: 1452: 1447: 1442: 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Since 1931:Commons 1773:Textile 1768:Systems 1738:Privacy 1723:Nuclear 1487:Process 1445:Genetic 1391:Optical 1371:Control 1364:outline 1331:Thermal 1321:Railway 1261:Railway 1256:Traffic 1179:Coastal 1138:Outline 1133:History 959:4392276 923:Bibcode 900:4392276 864:Bibcode 608:Bibcode 294:, etc. 284:shellac 264:Plastic 259:Plastic 244:fatigue 228:aramids 46:History 28:polymer 1951:Portal 1748:Survey 1743:Safety 1630:Design 1450:Tissue 1326:Sports 1311:Marine 1301:Energy 1226:Mining 1028:  1018:  957:  949:  941:  915:Nature 898:  890:  882:  856:Nature 837:  806:  796:  748:  706:  698:  659:  649:  626:  433:Airbus 427:. 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Index

engineering
polymer
petrochemical industry
polymerization
compounding
Charles Goodyear
vulcanization
thermoplastics
elastomers
thermosets
Thermoplastic
tensile moduli
transparency
consumer products
medical products
polyethylene
polypropylene
nylon
acetal resin
polycarbonate
PET
elastomer
Thermoplastic elastomers
tyres
natural rubber
nitrile rubber
polychloroprene
polybutadiene
styrene-butadiene
thermosetting

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