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Maktab yoshidagi bolalar poyabzalining ustki qismi konstruktsiyasida qo'llash uchun trikotaj polotnolarning fizik-mexanik xususiyatlarini baholash

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MAQOLA ANNOTATSIYASI

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Maktab yoshidagi bolalar poyabzalining ustki qismi uchun material tanlashda o'sib borayotgan oyoq panjasining anatomo-fiziologik xususiyatlari, dinamik yuklama va sanitariya-gigiyenik talablar hisobga olinishi zarur. Ushbu ishning maqsadi — poliamid (Neylon 150D) va poliester (Polyester 150D) asosida yassi to'qish usulida olingan trikotaj polotnolarning maktab poyabzali ustki qismida qo'llashga yaroqliligini eksperimental baholash hamda natijalarni ГОСТ 26165-2003 va TR TS 007/2011 talablariga nisbatan taqqoslashdir. Tadqiqotda uch xil to'qish varianti va ip tarkibining besh nisbatlari (100/0; 75/25; 50/50; 25/75; 0/100) o'rganildi. Sinovlar ISO 13934-1 (uzilish kuchi va uzilishdagi cho'zilish), ISO 9237 (havo o'tkazuvchanlik) hamda ISO 139 (gigroskopiklik) bo'yicha bajarildi. Natijalar shuni ko'rsatdiki, barcha namunalar mustahkamlik (≥700–800 N), nisbiy cho'zilish (90–150 %), havo o'tkazuvchanlik (≥60 sm³/sm²·s) va gigroskopiklik (≥2 %) bo'yicha normativ chegaralarga mos keladi. Eng maqbul balans 2-variant to'qishda neylon/poliester 50/50 tarkibida qayd etildi: uzilish kuchi 1145 N, cho'zilish 101 %, gigroskopiklik 2,61 %, havo o'tkazuvchanlik 94,6 sm³/sm²·s, sirt zichligi 668 g/m². Ushbu kombinatsiya maktab yosidagi bolalar poyabzali ustki qismi uchun asosiy variant sifatida tavsiya etiladi; bunda tumshuq va dastak qismini mustahkamlash, betlik qismida havo o'tkazuvchanlikni saqlash maqsadga muvofiq.

MUALLIFLAR

З.Ирисова

TOSHKENT TO'QIMACHILIK VA YENGIL SANOAT INSTITUTI

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# gigroskopiklik# neylon# poliester# fizik-mexanik xususiyatlar# havo o'tkazuvchanlik# trikotaj polotnolar# maktab poyabzali

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