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J-170T ИЗОТАКТИК ПОЛИПРОПИЛЕНИ ВА JM-370 ПРОПИЛЕНИНИНГ ЭТИЛЕН БИЛАН БЛОКЛАНГАН СОПОЛИМЕРИ ЭЛАСТИК-МУСТАҲКАМЛИГИНИНГ ҲАРОРАТ ВА ЭКСТРУЗИЯ СОНИГА БОҒЛИҚЛИГИ

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MAQOLA ANNOTATSIYASI

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Полипропилен (ПП) физик-механик ва термик хусусиятлари яхшилиги туфайли машинасозлик ва электротехника саноатида кенг қўлланилади. Ҳарорат таъсирида ПП макромолекулаларининг парчаланиши туфайли унинг эластик – мустаҳкамлик хусусиятлари йўқолиши кузатилади. Экструзия ҳарорати (170-200 0С) ва экструзия сонининг (7-мартагача) таъсири изотактик ПП учун бир қатор механик хусусиятларнинг кучайишига олиб келиши ва ПП нинг этилен билан блокланган сополимерига деярли таъсир қилмаслиги кўрсатилди. Олинган натижалар полипропиленни қайта ишлаш шартларини танлаш учун қизиқиш уйғотади.

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# механические свойства# полипропилен# polypropylene# mechanical properties# σ-ε эгрилиги# механик хусусиятлар# экструзия ҳарорати ва экструзия # микробўшлиқлар# кривые σ-ε# температура и число экструзии# микропустоты# σ - ε curves# temperature and extrusion number# microvoids

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