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QATLAMLI SILIKATLAR VA IZOTAKTIK POLIPROPILEN ASOSIDAGI KOMPOZITLARNING MEXANIK VA TERMIK XUSUSIYATLARI

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MAQOLA ANNOTATSIYASI

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Mazkur maqolada polipropilen (PP) va qatlamli silikatlar asosida polimer kompozitsion materiallarning melt mixing usuli orqali olinishi bayon qilingan. Malein angidrid payvandlangan polipropilen (MA-p-PP) kompatibilizator (moslashtirgich) sifatida ishlatildi va kompatibilizator miqdorining qatlamlararo turli xil zichlikdagi modifikator joylashgan ikki turdagi qatlamli silikatlar asosidagi kompozitlarining termik va mexanik xususiyatlariga ta’siri o‘rganildi. Kompozit tarkibidagi to‘ldiruvchi miqdori o‘zgarmas 3 % ni tashkil qilgan holda, kompatibilizator 3, 6, 9 va 12 % gacha o‘zgartirildi. Modifikatorning zichligi yuqoriroq bo‘lgan qatlamli silikat Cloisite15A interkalatsiyalangan tuzilmalarni hosil qildi. Modifikatorning zichligi nisbatan pastroq bo‘lgan Cloisite20A da esa, asosan, eksfoliatsiyalangan nanokompozitlar olishga erishildi. Nanostrukturaning shakllanishi termik barqarorlikning sezilarli darajada o‘sishiga olib keldi (50 % vazn yo‘qotish polipropilen va uning asosidagi nanokompozitlar uchun mos ravishda 360 °C va 430 °C haroratlarda kuzatiladi). Nanokompozitlarning mexanik xususiyatlari tahlili elastiklik modulning 15–20 % ga oshishi va bu ta’sir eksfoliatsiyalangan tuzilmalar uchun yaqqolroq namoyon bo‘lishini ko‘rsatdi. Oquvchan holatga o‘tish kuchlanishi amalda o‘zgarmasdan saqlanib qolgan holda, elastik deformatsiya sezilarli darajada kamaydi.

MUALIFLAR

Teglar

# монтмориллонит# полипропилен# polypropylene# окисление# oxidation# композит# composite# Montmorillonite# intercalation# kompozit# malein angidrid# polipropilen# qatlamli silikat# payvandlangan# interkalatsiya# eksfoliatsiya# oksidlanish# montmorillonit# слоистый силикат# полипропилен с привитым малеинов# интеркаляция# эксфолиация# layered silicate# polypropylene grafted maleic anh# exfoliation

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Foydalanilgan adabiyotlar

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