پایان نامه تهیه نانو کامپوزیت‌ های هیبریدی بر پایه رزین یورتان اکریلاتالیاف طبیعینانو رس و بررسی خواص آن‌ ها

فهرست:

فصل اول : مقدمه. 1

1-1-کامپوزیت‌ها 1

1-2-نانو فناوری.. 2

1-3-نانو کامپوزیت‌ها 3

1-3-1-تاریخچه تهیه و استفاده از نانو کامپوزیت‌ها 3

1-3-2-معرفی نانو کامپوزیت‌ها 3

1-4-هدف.. 4

فصل دوم : مروری بر مطالعات انجام شده 5

2-1-فاز پیوسته (زمینه/ماتریس) 5

2-1-1-رزین یورتان-اکریلات.. 5

2-1-2-رزینهای پلی استر غیر اشباع. 6

2-1-3-رزینهای وینیل استر. 7

2-2-الیاف.. 8

2-2-1-ویژگی‌های الیاف طبیعی.. 9

2-2-2-روش‌های اصلاح الیاف طبیعی.. 10

2-3-نانو ذرات.. 15

2-3-1-سیلیکات‌های لایه‌ای.. 15

2-3-2-ساختمان و خواص سیلیکات‌‌های لایه‌ای آلی دوست... 17

2-4-انواع نانو کامپوزیت‌‌های خاک رس... 18

2-4-1-میکرو کامپوزیت... 18

2-4-2-نانو کامپوزیت در هم رفته. 18

2-4-3-نانو کامپوزیت ورقه شده. 18

2-5-روش‏‌های تهیه نانوکامپوزیت‌‌های پلیمری.. 19

2-5-1-پلیمریزاسیون نفوذی درجا 19

2-5-2-درهم گرفتگی پلیمر یا پیش پلیمر از محلول ( محلولی) 20

2-5-3-اختلاط مذاب.. 20

2-6-روش‏‌های شناسایی نانوکامپوزیت‌‌های لایه‌ای.. 20

2-6-1-پراش اشعه ایکس.... 20

2-6-2-میکروسکوپی الکترونی عبوری.. 21

2-6-3-سایر تکنیک‌های شناسایی.. 22

2-7-روش‌های شکل دهی کامپوزیت‌ها 22

2-7-1-قالب‌گیری رزین تحت خلاً.. 23

2-7-2-تجهیزات فرآیند قالب‌گیری رزین تحت خلاً  و راه اندازی.. 24

2-8-تحقیقات گزارش شده. 27

2-8-1-نانو کامپوزیت‌های حاوی نانو ذرات رس... 27

2-8-2-کامپوزیت‌های تقویت شده با الیاف طبیعی.. 30

2-8-3-نوآوری در پژوهش.... 35

فصل سوم : بخش تجربی. 36

3-1-مواد و تجهیزات.. 36

3-1-1-مواد. 36

3-1-2-تجهیزات.. 41

3-2-روش آزمون. 42

3-2-1-پخش و باز نمودن  نانو ذرات در ماتریس رزینی.. 43

3-2-2-اصلاح سطح الیاف.. 44

3-3-مشخصه یابی پخش نانو‌ذرات و آماده‌سازی سطح الیاف.. 45

3-3-1-ویسکوزیته. 45

3-3-2-آزمون پراش اشعه ایکس.... 45

3-3-3-میکروسکوپ الکترونی روبشی / تجزیه پرتو ایکس با انرژی پاشنده. 45

3-3-4-میکروسکوپ الکترونی عبوری.. 45

3-3-5-آزمون‌های مشخصه یابی آماده سازی سطح الیاف.. 45

3-4-تهیه و تولید کامپوزیت و نانو کامپوزیت‌ها 46

3-4-1-تهیه قالب چوبی.. 46

3-4-2-تهیه قالب سیلیکونی.. 46

3-4-3-سیستم پخت رزین یورتان-اکریلات.. 48

3-4-4-تهیه کامپوزیت‌های پر شده با نانو ذرات با استفاده از فرآیند ریخته‌گری.. 48

3-4-5-تولید کامپوزیت‌های تقویت شده با الیاف طبیعی توسط فرآیند قالب‌گیری رزین تحت خلاً.. 49

3-5-آزمون‌های تعیین خواص نمونه‌‌های کامپوزیتی.. 51

3-5-1-آزمون کشش.... 51

3-5-2-آزمون خمش.... 52

3-5-3-آزمون ضربه. 52

3-5-4-شکاف زن. 52

3-5-5-سختی سنجی بارکول. 52

3-5-6-سرعت سوختن... 52

3-5-7-جذب آب.. 52

فصل چهارم : نتایج و بحث.. 54

4-1-نانوکامپوزیت‌‌های بر پایه رزین یورتان-اکریلات و نانو ذرات خاک رس... 54

4-1-1-مشخصه یابی نانو کامپوزیت... 54

4-1-2-خواص مکانیکی و فیزیکی.. 60

4-2-کامپوزیت‌ها و نانوکامپوزیت‌‌های یورتان‌اکریلات تقویت شده با الیاف فلاکس قبل و بعد از اصلاح سیلانی الیاف.. 74

4-2-1-مشخصه یابی کامپوزیت‌ها و نانو کامپوزیت‌ها 74

4-2-2-خواص فیزیکی و مکانیکی.. 78

فصل پنجم : نتیجه‌گیری و پیشنهادات.. 88

5-1-نتیجه‌گیری.. 88

5-2-پیشنهادات جهت ادامه تحقیق.. 90

فصل ششم : مراجع و منابع. 92

6-1-منابع و مراجع. 92

منبع:

6-1-منابع و مراجع

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