【摘要】：本文比較系統(tǒng)的研究了炭黑、硫化體系、石蠟油用量、防老劑、EPDM結(jié)構(gòu)及老化條件對EPDM發(fā)泡減振材料結(jié)構(gòu)與性能的影響,并借助彈性體測試系統(tǒng)(MTS)對發(fā)泡材料的動靜剛度進行了分析表征。研究結(jié)果表明:隨炭黑用量的增加,膠料力學性能變好,泡孔形貌得到改善,但動靜剛度比逐漸增大。炭黑N330填充的膠料力學性能較高,炭黑N550填充的膠料泡孔形貌較好。炭黑并用配比對發(fā)泡材料力學性能影響較小,并用炭黑N330/N550配比為30/40時,損耗因子最大,動靜剛度比最小。膠料泡孔尺寸隨硫化劑用量增加而逐漸減小,綜合力學性能變好,最佳硫黃與DCP用量分別為1.5份和3份。助交聯(lián)劑TAIC與DCP配比為1/1時能更加有效的促進交聯(lián),提升力學性能。DCP/S復合硫化體系中,硫黃對發(fā)泡材料的性能的影響比DCP的大。膠料力學性能隨石蠟油用量增加而降低,石蠟油用量為15份時,綜合力學性能最好,動靜剛度比最小。對比不同防護體系,RD/4020用量為1/1份時,發(fā)泡膠料得到較好的綜合性能。不同牌號的EPDM生膠對其發(fā)泡材料的力學性能影響不同。隨老化溫度升高和時間的延長,單位面積內(nèi)的泡孔數(shù)量增多,尺寸減小,靜剛度變化率減小。
[Abstract]:In this paper, the effects of carbon black, vulcanization system, paraffin oil content, antioxidant, EPDM structure and aging conditions on the structure and properties of EPDM foam damping materials were studied systematically. The dynamic and dynamic stiffness of foamed materials was analyzed and characterized by means of elastomer test system (MTS). The results show that with the increase of the amount of carbon black, the mechanical properties of the compound become better, the morphology of the foam pore is improved, but the ratio of static and static stiffness increases gradually. The rubber filled with carbon black N330 has higher mechanical properties, and the foam filled with carbon black N550 has better morphology. When the N330/N550 ratio of carbon black is 30 / 40, the loss factor is the largest and the ratio of static and static stiffness is the smallest. With the increase of the amount of curing agent, the pore size of rubber foam decreases gradually, and the comprehensive mechanical properties become better. The optimum amount of sulfur and DCP is 1.5 phr and 3 phr respectively. When the ratio of co-crosslinking agent TAIC and DCP is 1 / 1, it can promote crosslinking more effectively and improve mechanical properties. In DCP/S compound vulcanization system, sulfur has more influence on the properties of foaming materials than DCP. The mechanical properties of the compound decreased with the increase of the amount of paraffin oil. When the dosage of paraffin oil was 15 phr, the comprehensive mechanical properties were the best and the ratio of static and static stiffness was the smallest. Compared with different protective systems, when the amount of RD/4020 is 1 / 1 phr, the foaming gum has better comprehensive properties. Different grades of EPDM raw rubber have different effects on the mechanical properties of foamed materials. With the increase of aging temperature and the prolongation of time, the number of bubble holes per unit area increases, the size decreases and the static stiffness rate decreases.
【學位授予單位】：青島科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TQ333.4;TB383.4

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