研究生: |
林玄宇 Hsuan-Yu Lin |
---|---|
論文名稱: |
不同維度之奈米碳材/氯丁橡膠複合材料製備具耐候性外部包覆材之應用 Application of Different Dimension Carbon Nanomaterial/Chloroprene Rubber Composite Material for Weather-resistant Properties Exterior Covering Rubber |
指導教授: |
邱智瑋
Chih-Wei Chiu |
口試委員: |
邱顯堂
Hsien-Tang Chiu 鄭智嘉 Chih-Chia Cheng |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 材料科學與工程系 Department of Materials Science and Engineering |
論文出版年: | 2021 |
畢業學年度: | 109 |
語文別: | 中文 |
論文頁數: | 97 |
中文關鍵詞: | 氯丁橡膠 、碳黑 、奈米碳管 、石墨烯 、交聯 、矽烷偶聯劑 、外部包覆材料 |
外文關鍵詞: | chloroprene rubber, carbon black, carbon nanotubes, graphene, crosslinking, silane coupling agents, exterior covering material |
相關次數: | 點閱:305 下載:0 |
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氯丁橡膠是合成橡膠中相當常見且實用的膠料之一,除了具備橡膠本身的各項優良物性之外,還擁有優良的耐環境性能。而在氯丁橡膠中,填料系統對於整體橡膠性能的影響最為顯著,在大多數的應用,有關於零維的填料如碳黑,已經有廣泛的研究,對於其他不同維度之奈米碳材料的探討較少。因此在本研究中,選用三種不同維度之奈米碳材,分別為碳黑(Carbon black)、奈米碳管(Carbon nanotubes)以及石墨烯(Graphene),並在三種添加量下(5/10/15phr),對比於無填料的情況,共十組硫化膠試樣,比較整體對於氯丁橡膠的各項性能強化效果,其中配合矽烷偶聯劑(Silane coupling agents)使奈米填料能完整分散相容於氯丁橡膠之中,並且也配合交聯劑乙烯硫脲(Ethylene thiourea, ETU)以及氧化鋅(Zinc oxide),建立氯丁橡膠之架橋系統,以強化整體氯丁橡膠之交聯與機械強度。實驗以微型混煉機製備出橡膠試片,並透過木尼黏度與硫化曲線分析其硫化性質,再透過機械性質分析比較各項物性差異,如硬度、耐磨耗、拉伸強度、熱老化、耐油性等。研究結果顯示,在交聯系統中,使用交聯劑配合金屬氧化物系統能提供更快的交聯速率並且提升硫化膠的交聯密度,而填料系統的部分配合使用矽烷偶聯劑提高奈米碳材於橡膠中的分散性,進一步強化填料對橡膠的增強效率,最後在三種不同維度的奈米碳材中,傳統碳黑具有穩定小幅度的補強效果,並具備價格低廉能大量生產的優勢,而奈米碳管只需少量的添加,就能大幅度的提升橡膠之交聯密度與硬度,但相對來說會影響橡膠本身之彈性及韌性,最後在石墨烯的測試下,唯有耐油性能隨添加量上升而下降,其整體對於物性表現以及耐候性上都有不錯的補強效果,本研究提供一個氯丁橡膠在不同需求或是價格考量上,對於補強填料選擇的方向。
Chloroprene rubber is one of the most common and practical rubber compounds in synthetic rubber. In addition to the excellent physical properties, it also performs well weather resistance. In the overall chloroprene rubber system, the filler system has the most significant effect on the rubber performance. Although in most applications, there have been extensive studies on zero-dimensional fillers (such as carbon black), and there are few discussions on other carbon nanomaterials of different dimensions. Therefore, in this study, three different dimensions of carbon nanomaterials were selected, carbon black, carbon nanotubes and graphene, respectively. They were used in three additive amounts (5/10/15phr), and also compared with the case of no filler added. A total of ten sets of vulcanized rubber samples were prepared, compare their enhancing effects on chloroprene rubber. Silane coupling agents were also added to make nanofillers completely dispersed and compatible with chloroprene rubber. Furthermore, the crosslinking agent ethylene thiourea (ETU) and zinc oxide were used to complete the crosslinking system, strengthen the crosslinking density and mechanical strength of the rubber. In the experiment, bench kneader was used to prepare vulcanized rubber samples, and the vulcanization properties were analyzed through mooney viscometer and rheometer. Then compare the physical properties of each sample through mechanical property analysis, such as hardness, abrasion, tensile testing, aging resistance, oil resistance, etc. The results show that the use of crosslinking agent combined with metal oxide system can provide faster crosslinking rate and increase crosslinking density. Silane coupling agents were used in the filler system to improve dispersibility and reinforcing efficiency of carbon nanomaterials in chloroprene rubber. Among three different dimensions of carbon nanomaterials, traditional carbon black has a stable and small reinforcing effect. It also has the advantage of being inexpensive and capable of mass production. Carbon nanotubes can greatly increase the crosslinking density and hardness of rubber with a small amount of addition, but it will affect the elasticity and resilience of the rubber. Finally, when graphene is added, only the oil resistance performance decreases with the addition increased, it has a good effect on physical properties and weather resistance of the rubber. This study provides a direction for the choice of reinforcement materials for chloroprene rubber in different needs or price considerations.
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