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d be useful and perhaps would expand the mercial opportunities for PC/ABS alloys.ABSgMAH was melting blended with polycarbonate (PC) and acrylonitrile/butadiene/styrene polymer (ABS) using a doubleextruder, and PC/ABS posite was prepared. On the basis of the mechanism of maleic anhydride (MAH) of ABSgMAH, the patibilizing, tensile and impact property modifications of PC/ABS alloy by using MAH as reactive patibilizers were studied. Materials’ notched impact strength improves from KJ/m2 to , but also on tensile strength of PC/ABS alloy.PC/ABS/EVA posite was prepared by EVA blending with PC and ABS. The investigations of the mechanical properties showed the singlenotched impact strength of PC/ABS alloys by adding 5 shares of elastomer was markedly improved. When the elasticcore was μm and the elastomer dispersed uniformly in the resin blend the notched impact strength reached the highest KJ/m2 which increased by %. EVA dispersed in the resin, absorbed and dispersed impact stress by its shape changing, so crazing of EVA toughens PC/ABS alloys.EVAgMAH, the patibilizing and toughening, was melting blended with polycarbonate (PC) and acrylonitrilebutadienestyrene (ABS), and the PC/ABS/elastomer posite material was prepared. The investigations of the mechanical properties show a markedly improvement on the singlenotched impact strength of PC/ABS blends by adding elastomer. The notched impact strength of PC/ABS blends reaches the maximum , and the patibilizing is increased. EVA in the EVAgMAH dispersed in resin, absorbs and disperses impact strength by its shape changing, so toughening the PC/ABS blends with crazing and patibilizing of MAH. The torque of PC/ABS blend is improved by adding elastomer.There is no toughening effect by Nanocalcium carbonate (CaCO3) filling with PC/ABS. Nanocalcium carbonate/polymer posite particles were prepared by soapless emulsion polymerization of methylmethacrylate (PMMA) and butyl acrylate (BA) on the surface of nanoCaCO3 in nanoCaCO3 aqueous suspension. The effects of posite particles on the mechanical properties of PC/ABS blends through twice extruding in double extruders were studied. The results showed that the singlenotched impact strength of PC/ABS blends is improved from KJ/m2 to , and the tensile strength is improved by filling 2 shares of modified nanoCaCO3 particles. NanoCaCO3 posite particles have double toughening effects of inorganic nanoparticles and rubbers. Shear yielding of modified nanoCaCO3 could be the mainly toughening contribution. Toughening mechanism is that the nanoCaCO3 particle decentralises the part point tension into all round surface. The dispersion degree of CaCO3 particles in the blends is improved when filling the posite particles. The addition amount of the NanoCaCO3 posite particles was low, and the cost was acceptable, offering a good choice of the modification of PC/ABS alloy.KEY WORDS: PC/ABS alloy, reactive patibilizer, toughening, nanoCaCO3, mechanical properties目 錄摘要 IABSTRACT III目 錄 VII符號說明 XI第一章 文獻綜述 1 前言 1 PC/ABS合金的發(fā)展及研究現(xiàn)狀 1 PC/ABS合金的國外研究現(xiàn)狀 1 PC/ABS合金的國內(nèi)研究現(xiàn)狀 2 PC/ABS合金相容性研究的進展 2 PC、ABS共混的研究 3 PC/ABS合金的增容改性 4 PC/ABS合金增韌改性的研究 6 ABS對PC組分的增韌改性 7 有機彈性體對PC/ABS的增韌研究 7 納米無機顆粒填充增韌PC/ABS的研究 8 本文研究的研究內(nèi)容、目的和意義 11第二章 PC/ABS合金制備及其力學性能研究的基本方法 12 引言 12 PC/ABS合金的制備 12 PC/ABS合金體系的確定: 12 PC/ABS合金制備工藝 13 PC/ABS合金制備和檢測常用原料及設備 13 PC/ABS合金力學性能的測試方法 15 合金拉伸性能的測試 15 合金彎曲性能的測試 15 合金缺口沖擊強度的測試 16 共混相容性表征的一般方法 16 共混分散形態(tài)的直接觀察 16 共混體系加工性能的研究 17 測定共混體系組分的玻璃化轉(zhuǎn)變溫度變化 17第三章 ABSgMAH增容PC/ABS合金的研究 18 引言 18 實驗部分 18 18 實驗結(jié)果與討論 19 19 PC/ABS復合材料力學性能的變化 21 ABSgMAH增容的PC/ABS合金微觀結(jié)構(gòu) 22 ABSgMAH對PC/ABS合金Tg的影響 22 本章小結(jié) 23第四章 EVA對PC/ABS合金性能的影響 24 引言 24 合金微觀形貌的觀察 24 24 EVA對PC/ABS合金力學性能的影響 24 EVA增韌的PC/ABS合金材料的微觀結(jié)構(gòu) 26 EVA中VA含量不同對PC/ABS合金力學性能影響的比較 27 本章小結(jié) 28第五章 EVAgMAH增韌增容PC/ABS合金的研究 29 引言 29 PC/ABS復合材料的檢測 29 實驗結(jié)果與討論 29 EVAgMAH對PC/ABS合金力學性能的影響 29 EVAgMAH對PC/ABS合金Tg的影響 31 EVAgMAH對PC/ABS合金加工性能的影響 32 EVAgMAH對PC/ABS合金微觀結(jié)構(gòu)的影響 33 本章小結(jié) 34第六章 納米碳酸鈣填充增韌PC/ABS合金的研究 35 引言 35 實驗部分 35 復合微粒的制備 35 復合材料的制備 36 實驗結(jié)果與討論 36 納米CaCO3復合微粒的形成機理分析 36 納米CaCO3復合微粒對PC/ABS合金缺口沖擊強度的影響 37 納米CaCO3對PC/ABS合金拉伸強度的影響 37 改性納米碳酸鈣對PC/ABS合金微觀結(jié)構(gòu)的影響 39 PC/ABS合金的加工性能 41 本章小結(jié) 42第七章有機彈性體和改性納米無機顆粒增容增韌PC/ABS合金的比較 43 引言 43 實驗結(jié)果比較與討論 43 增韌劑對PC/ABS合金力學性能的影響 43 增韌劑對PC/ABS合金微觀結(jié)構(gòu)的影響 44 增韌劑對PC/ABS合金增韌增容作用的分析 45 對PC/ABS合金增韌 45 對PC/ABS合金增容 46 增韌劑對PC/ABS合金加工性能的影響 46 本章小結(jié) 47第八章 PC/ABS復合材料殘余應力的研究 49 引言 49 單一組分對PC/ABS共混材料力學性能的影響 49 殘余應力對PC/ABS共混材料的影響 50 PC/ABS復合材料內(nèi)應力的形成原因 50 殘余應力對PC/ABS復合材料力學性能的影響 50第九章 結(jié)論 52參考文獻 54致謝 57研究成果及發(fā)表的學術論文 58符號說明ABS丙烯腈/丁二烯/苯乙烯共聚物ABSgMAHABS接枝馬來酸酐EVA (E/VAC)乙烯醋酸乙酯共聚物EVAgMAHEVA接枝馬來酸酐MAH順丁烯二酸酐PBB聚合溴化聯(lián)苯PBDE聚合溴化聯(lián)苯乙醚PC聚碳酸酯PPO聚苯撐氧(四聚苯醚)PVC聚氯乙烯APS過硫酸銨BA丙烯酸丁酯MMA甲基丙烯酸甲酯St苯乙烯SEM掃描電子顯微鏡Tg玻璃轉(zhuǎn)化溫度DSC差熱掃描量熱儀復合材料的拉伸強度填料的含量及粒徑有關的參數(shù)Wα粘結(jié)功第一章 文獻綜述 前言PC/ABS合金是一種性能優(yōu)異的工程塑料,在電氣行業(yè)具有廣泛的應用。利用納米顆粒的小尺寸效應和剛性,其在合金體微觀區(qū)域內(nèi)將受到的點應力分散為顆粒表面應力,引起周圍樹脂大面積微開裂,通過剪切流動起到增韌PC/ABS合金的作用。納米碳酸鈣直接填充PC/ABS合金沒有增韌效果。對共混制得的復合材料研究表明,彈性體的添加顯著增加了PC/ABS合金的抗沖擊效果,%。對復合材料力學性能研究表明,添加5份彈性體EVA顯著增加了PC/ABS合金的抗沖擊性能,%。 KJ/;,%。學位論文作者簽名: 年 月 日59PC/ABS合金相容性與韌性的研究摘要 PC/ABS合金是一種性能優(yōu)良的復合材料,被廣泛應用于電子電器外殼件。北京化工大學碩士研究生學位論文研究生學位論文題 目 磁性殼聚糖空心微球的制備 學 位 論 文 原 創(chuàng) 性 聲 明本人鄭重聲明:所呈交的學位論文,是本人在導師的指導下,獨立進行研究工作所取得的成果。本人完全意識到本聲明的法律結(jié)果由本人承擔。ABSgMAH與PC、ABS經(jīng)雙螺桿擠出機反應共混,制備了PC/ABS復合材料。EVA與PC、 ABS共混制備了PC/ABS/彈性體復合材料。EVAgMAH對PC/ABS兼具增容增韌作用。EVAgMAH的添加增大了PC/ABS合金的加工扭矩。研究納米碳酸鈣復合微粒對PC/ABS合金力學性能的影響表明:添加7份雙單體聚合改性的納米碳酸鈣微粒將PC/ KJ/;2份改性納米碳酸鈣對材料的拉伸強度有一定程度的提高。關鍵詞:PC/ABS合金,