本文選題：EPDM + 胺類防老劑�。� 參考：《青島科技大學(xué)》2017年碩士論文

【摘要】：本文對EPDM基橡膠復(fù)合材料進(jìn)行了制備并對其性能進(jìn)行了研究,通過改變防老劑種類、填料種類和用量等來考察EPDM的一系列性能。首先,研究了不同種類的胺類防老劑體系以及在并用比例為0.5/1的條件下將RD/445,RD/AS,RD/NBC并用后的體系對于EPDM的機(jī)械性能以及熱氧老化性能的影響。實(shí)驗(yàn)結(jié)果表明,防老劑NBC的防護(hù)作用較好,兩種防老劑并用后的體系,RD/NBC(0.5/1)對EPDM的防護(hù)性能最佳且隨著老化時間的延長防護(hù)性能越明顯。其次,研究了在丙烯酸鋅作用的條件下加入改性碳納米管后對于EPDM粘合性能、機(jī)械性能的影響,并對填料的分散性能進(jìn)行了考察。結(jié)果表明,當(dāng)丙烯酸鋅用量為12份時,改性碳納米管用量為6份時,粘合性能最佳,鍍銅鋼絲的抽出力為725N,撕裂強(qiáng)度73.85N·mm-1,拉伸強(qiáng)度為22.2MPa;隨著改性碳納米管用量的增加,粘度和Payne效應(yīng)增大,加工性能降低。再次,研究了采用高混3mm芳綸纖維、1mm芳綸纖維和3mm芳綸纖維/玄武巖纖維、1mm芳綸纖維/玄武巖纖維對于EPDM性能的影響。結(jié)果表明,隨著芳綸纖維的增加加工性能降低,門尼粘度增加,芳綸纖維在膠料中分散性逐漸下降,拉伸強(qiáng)度降低,撕裂強(qiáng)度上升,磨耗體積先升后降,抵抗外界預(yù)定動態(tài)激擾能力提高,且橫向的動剛度大于縱向的動剛度。綜合機(jī)械性能數(shù)據(jù)分析,芳綸纖維的量在5-10份時EPDM的力學(xué)性能最佳。1mm芳綸纖維補(bǔ)強(qiáng)EPDM綜合性能優(yōu)于同量3mm芳綸纖維。最后,研究了高混法得到的玄武巖纖維對EPDM性能的影響并研究了采用超聲波輔助硅烷偶聯(lián)劑改性玄武巖纖維對EPDM的性能的影響。研究結(jié)果表明,隨著高混玄武巖纖維增加EPDM加工性能降低,綜合機(jī)械性能數(shù)據(jù)以及成本問題考量分析,在保證一定的性能的條件下高混改性纖維的量在10-15份時EPDM的性能最佳;高混玄武巖纖維綜合性能優(yōu)于高混芳綸纖維性能。硅烷偶聯(lián)劑KH550可以增加玄武巖纖維表面的粗糙程度,提高玄武巖纖維與膠料之間的相容性與結(jié)合力。采用超聲波輔助的方法可以提升KH550對于玄武巖纖維的改性,使其粗糙程度增加,更加有利于玄武巖纖維與EPDM的結(jié)合,綜合物理機(jī)械性能有明顯的提升,且優(yōu)于高混玄武巖纖維填充EPDM的物理機(jī)械性能,是一種很好的提升改性的方式。
[Abstract]:In this paper, EPDM based rubber composites were prepared and their properties were studied. A series of properties of EPDM were investigated by changing the type of antioxidant, the type and amount of fillers, etc. Firstly, the effects of different kinds of amine antioxidant systems and the blending ratio of 0.5 / 1 on the mechanical properties and thermal oxygen aging properties of EPDM were studied. The experimental results show that the protective effect of antioxidant NBC is better, and the protective performance of EPDM is the best when the two antioxidants are used together. The better the protective performance is, the more obvious the protective performance is with the prolonging of aging time. Secondly, the effects of modified carbon nanotubes (CNTs) on the adhesion and mechanical properties of EPDM under the action of zinc acrylate were studied, and the dispersion properties of fillers were investigated. The results show that when the amount of zinc acrylate is 12 phr and the content of modified carbon nanotube is 6 phr, the adhesion property is the best. The pulling force, tearing strength and tensile strength of copper plated steel wire are 725N, 73.85Nmm-1 and 22.2MPa, respectively. The viscosity and Payne effect increased and the processability decreased. Thirdly, the effects of high mixing 3mm aramid fiber and 3mm aramid fiber / basalt fiber on the properties of EPDM were studied. The results show that with the increase of the processing property and Mooney viscosity of aramid fiber, the dispersion of aramid fiber decreases gradually, the tensile strength decreases, the tear strength increases, and the wear volume increases first and then decreases. The lateral dynamic stiffness is larger than the longitudinal dynamic stiffness. The mechanical properties of EPDM are the best when the amount of aramid fiber is 5-10 phr. The comprehensive properties of EPDM reinforced by aramid fiber are better than that of aramid fiber of the same amount. Finally, the effects of basalt fibers obtained by high mixing method on the properties of EPDM and the effects of ultrasonic assisted silane coupling agent on the properties of EPDM were studied. The results show that with the increase of EPDM processing performance of high mixed basalt fiber, the properties of EPDM are the best when the amount of high blending modified fiber is 10-15 phr under the condition of guaranteed certain performance, according to the comprehensive mechanical property data and cost analysis. The comprehensive property of high mixed basalt fiber is better than that of high mixed aramid fiber. Silane coupling agent KH550 can increase the roughness of basalt fiber surface and improve the compatibility and adhesion between basalt fiber and rubber. Ultrasonic assisted method can improve the modification of basalt fiber by KH550, increase its roughness, facilitate the combination of basalt fiber and EPDM, and improve the comprehensive physical and mechanical properties obviously. And it is better than the physical and mechanical properties of EPDM filled with high mixing basalt fiber, which is a good way to enhance the modification.
【學(xué)位授予單位】：青島科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TB332

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