畢業論文-nrlldpe共混體系性能的研究-資料下載頁

　　

【正文】 2dsinθ nλ =2dsinθ 以及λ =、 2θ =18176。、 176。 可以得到，天然橡膠晶體部分層間距以及 LLDPE晶體的層間距。 射入晶體的 X射線使晶體內原子中的電子發生頻率相同的強制振動，因此 每個原子又可作為一個新的 X射線源向四周發射 波長相同，但強度卻非常弱。單個原子的次生 X射線是微不足道的，但在晶體中由于存在按照一定周期重復的大量原子，這些原子所產生的次級 X射線會發生干涉現象。干涉是由于從不同次生光源射出的光線間存在光程差引起的，只有當光程差等于波長的整數倍時光波才能互相疊加，在其余情況下則減弱，甚至相互抵消。 太原工業學院 畢業論文 31 4 結論 （ 1） 研究表明， LLDPE 并不能改變天然橡膠的晶體結構。只是以分散相分散在天然橡膠大分子間。 （ 2） 隨著 LLDPE 含量的增加， NR/LLDPE 共混體系的 力 學 性能發生明顯的改變。其中，伸長率會隨 LLDPE 的增加而變小。而在 NR 為 100 份， LLDPE 為80 份 時，共混體系的 斷裂 負荷、斷裂強度、撕裂強度均為最大。 （ 3） 在實驗中所用的四種補強體系，補強效果按照：炭黑 （ 330） 、白炭黑 （氣相法） 、陶土 （ CQ12） 、碳酸鈣的順序遞減。 （ 4） 在實驗中所用的三種硫化體系中，有機過氧化物體系所制的的 共混物的拉伸強度、硬度較高，伸長率和永久變形低 。硫黃硫化體系制得共混物的拉伸強度、硬度較低，伸長率和永久變形卻較高 。有機過氧化物 /硫黃并用硫化體系制得共混物的性能介于上述兩者之間 。 （ 5） NR/LLDPE 并用體系適用的 最佳 共混溫度為 110 攝氏度左右。 太原工業學院 畢業論文 32 參考文獻 [1]LDPE/NR 共混物的力學性能的研究 張軍 (南京化工學院化工系，（ 210009） . [2]輪胎膠粉 /LLDPE 共混材料性能的研究 魯聞生 陳占勛 劉本國 (青島科技大學高分子科學與工程學院 ,266042). [3]共混物條件對 LDPE/NR 體系基本性能的研究 張軍 吳紅保 魏新華（南京化工學院化工系 ). [4]NR/LDPE 共混物的研究與應用 肖文勝 ,陳 霖 ,滕 雷 (黃石高等專科學 校環化系 ,湖北黃石 435003). [5]NR/HDPE 共混熱塑性彈性體的結構與性能研究 向福如 馬興明 陳小男 李克友 (四川聯合大學高分子材料系 成都 610065). [6] (日 )山下晉三，金子柬助編 .紀奎江等譯 .交聯劑手冊 .北京 :化學工業出版社，1990. [7]張軍、董道理 .現代塑料加工應用 1990(1) :72. [8] ,9(1)):72. [9]張軍、李喬釣 .合成橡膠工業 1991,14(4):287. [10] (美 )JA 曼森 LH 斯 拍林編聚合物共混物及復合材料 北京 :化學工業出版社，1983. [11]AslaRubberalldPlastis， 1984。5~6， 22. [12]朱信明 ,程銀 ,宗國君 .蝸輪冷凍粉碎膠粉在 SBR 中的應用 .橡膠工業 ,1999,(8):475. [13]陶國良 ,鄭天明 ,崔宏俊 .膠粉 /PVC 共混材料的研究 .塑料工業 ,2022,28(6):16. [14]陶國良 ,牛建嶺 .硫化膠粉 /PP 共混材料的研究 .中國塑料 ,2022,15(9):73. [15]諾維科夫 B H生膠和混煉膠的加工 [M]周彥豪 ,陳倫紀 ,李美霞 ,等譯 北京 :化學工業出版社 ,1985,268269. [16]殷敬華，莫志深，紀峰等。高分子學報， 1987； 276. [17]謝遂志等主編 .像膠工業手冊，第一分冊，修訂版 .北京 :化學工業出版社， 1989. [18]張開主編 .高分子物理學 .北京 :化學工業出版社， 1981. [19]Asia Rubber and ，（ 5~6）： 22. [20] and ,1978: .Academic Press. [21],1951:Developments witht thermoplastic natural rubber 太原工業學院 畢業論文 33 part 3921. [22]:Thermoplasticguayule Rubber. Blendspositions and mechanical Chemistry and ,1341. 太原工業學院 畢業論文 34 致謝 在本文完成之際，借此機會向所有指導、幫助和關心過我的人們致以最誠摯的謝意 ! 感謝我的指導老師張保衛老師。張老師深厚的學術造詣、寬厚待人的高尚品德是我學習的榜樣。非常感謝張老師對我的培養，正是他敢于讓我 自己去摸索，自己去做，敢于讓我們嘗試每個自己的想法，讓我學會操作與專業相關的 origin軟件，為我以后的研究工作打下了 基礎。 在本論文完成之際，謹向張 老師致以崇高的敬意和深深的感謝！ 感謝 鄭菊英 老師在我完成畢業設計的期間及時提供給我大量的專業知識，從而能讓我順利的 及時完成此論文。 還要感謝與我一起進行實驗的同學們，在我初次操作如此大量實驗儀器時 ，抽出寶貴時間教我操作 。 感謝系院各級領導老師和同學們給予我生活和工作方面的便利，從而使我完成學業。同時也感謝所有關心和支持我的家人 、同學 ！ ag an employment tribunal clai Emloyment tribunals sort out disagreements between employers and employees. You may need to make a claim to an employment tribunal if: you don39。t agree with the disciplinary action your employer has taken against you your employer dismisses you and you think that you have been dismissed unfairly. For more informu, take advice from one of the anisations listed under Further help. Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation. Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the anisations listed under Further help. ation about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。t appealed against the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal. Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept i. If you are worried about how the time limits apply to you If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as a damagesbased agreement. In England and Wales, your solicitor can39。t charge you more than 35% of your pensation if you win the case. you39。re clear about the terms of the agreement. It might be best to get advice from an experienced adviser, for example, at a Citizens Advice Bureau. To find your nearest CAB, including those that give advice by , click on nearest CAB. For more information about making a claim to an employment tribunal, see Employment tribunals. The (lack of) air up there Cay man Islandsbased Webb, the Watch m 太原工業學院 畢業論文 35 head of Fifa39。s antiracism taskforce, is in London for the Football Association39。s 150th anniversary celebrations and will attend City39。s Premier League match at Chelsea on Sunday. I am going to be at the match tomorrow and I have asked to meet Ya ya Toure, he told BBC Sport. For me it39。s about how he felt and I would like to speak to him first to find out what his experience was. Uefa has opened disciplinary proceedings against CSKA for the racist behaviour of their fans during City39。s 21 win. Michel Platini, president of European football39。s governing body, has also ordered an immediate investigation into the referee39。s actions. CSKA said they were surprised and disappointed by Toure39。s plaint. In a statement the Russian side added: We found no racist insults from fans of CSKA. Age has reached the end of the beginning of a word. May be guilty in his seems to passing a lot of different life became the appearance of the same day。 May be back in the past, to oneself the paranoid weird belief disillusionment, these days, my mind has been very messy, in my mind constantly.