本文選題：酚酞聚芳醚酮 + 環(huán)氧樹(shù)脂�。� 參考：《吉林大學(xué)》2017年碩士論文

【摘要】：纖維增強(qiáng)熱塑性復(fù)合材料在近幾年得到了廣泛的關(guān)注,這是由于其應(yīng)用中表現(xiàn)出的良好的性能,如:很高的比強(qiáng)度和比模量、抗疲勞性、抗沖擊韌性、損傷阻抗、快速成型的制造工藝及可循環(huán)加工的特性。它可能代替已經(jīng)大量應(yīng)用的熱固性復(fù)合材料,從而推廣到航空航天及交通運(yùn)輸?shù)阮I(lǐng)域,具備廣闊的應(yīng)用前景。目前,研究較多的熱塑性樹(shù)脂基體包括:聚醚醚酮(PEEK)、聚酰亞胺(PI)、聚醚砜(PES)等,它們具有優(yōu)異的機(jī)械性能、熱穩(wěn)定性。以上研究工作主要集中在探究溫度、添加劑、老化等對(duì)材料的熱性能和機(jī)械性能的影響上。而碳纖維熱固性復(fù)合材料則是最早受到廣泛關(guān)注的復(fù)合材料體系,也具有較高的力學(xué)和熱學(xué)性能,在耐腐蝕和穩(wěn)定性方面都有良好的性能。但是隨著科技的不斷進(jìn)步,熱固性樹(shù)脂本身也存在許多的缺點(diǎn),所以研究人員針對(duì)其自身存在的不足對(duì)其進(jìn)行改性處理,例如用熱塑性樹(shù)脂對(duì)熱固性樹(shù)脂進(jìn)行改性等多種方法。在加工工藝上,熱塑性樹(shù)脂有兩方面的不足,第一則是熱塑性樹(shù)脂只有在高溫情況下才能達(dá)到良好的流動(dòng)態(tài),第二則是熱塑性樹(shù)脂本身具有較高的粘度從而不能較好地浸漬到纖維絲束中,這樣會(huì)嚴(yán)重影響層壓板的性能。針對(duì)熱塑性樹(shù)脂自身的不足,我們采取加入少量環(huán)氧樹(shù)脂對(duì)這一體系進(jìn)行改善。利用溶液法將樹(shù)脂與碳纖維布制備成預(yù)浸料,通過(guò)模壓成型工藝制備復(fù)合材料層壓板。通過(guò)對(duì)不同溶劑預(yù)浸料的制備進(jìn)行探究,從而得到質(zhì)量?jī)?yōu)異的混合樹(shù)脂預(yù)浸料。其次進(jìn)行了不同制備工藝的探索以得到較好的纖維浸漬和性能優(yōu)異的復(fù)合材料的層壓板。利用動(dòng)態(tài)機(jī)械性能、層間剪切強(qiáng)度、鋪覆強(qiáng)度、掃描電鏡的研究分別討論了在不同固化劑、不同樹(shù)脂比例下層壓板的性能表征。結(jié)果表明:使用N,N’-二甲基乙酰胺(DMAc)作為溶劑制備混合樹(shù)脂體系的預(yù)浸料可以達(dá)到良好的預(yù)浸效果。通過(guò)對(duì)于7層層壓板不同制備工藝的研究,得出了一種最佳的制備工藝方法。動(dòng)態(tài)機(jī)械性能(DMA)測(cè)試表明,對(duì)比三種不同固化劑的層壓板,間苯二胺(MPD)與二氨基二苯基砜(DDS)兩種固化劑對(duì)于層壓板影響較大,而在對(duì)比不同樹(shù)脂比例下的五種層壓板其結(jié)果表明層壓板M5%和M10%綜合性能優(yōu)異。
[Abstract]:Fiber reinforced thermoplastic composites have received extensive attention in recent years, which is due to their good properties in application, such as high specific strength and modulus, fatigue resistance, impact toughness, damage resistance, etc. Rapid prototyping manufacturing process and recycling processing characteristics. It may replace the thermosetting composite material which has been widely used, thus it can be extended to aerospace, transportation and other fields, and has a broad application prospect. At present, many thermoplastic resins have been studied, such as polyether ether ketone (PEEK), polyimide (Pi), polyethersulfone (PES), and so on. They have excellent mechanical properties and thermal stability. The research focuses on the effects of temperature, additives and aging on the thermal and mechanical properties of the materials. Carbon fiber thermosetting composite is the first widely concerned composite system, and has high mechanical and thermal properties, and has good corrosion resistance and stability. However, with the development of science and technology, thermosetting resin itself has many shortcomings, so many methods such as modification of thermosetting resin with thermoplastic resin have been carried out according to the shortcomings of thermosetting resin. In the processing process, thermoplastic resin has two shortcomings. The first is that thermoplastic resin can only reach a good flow state at high temperature. The second is that the thermoplastic resin has high viscosity and cannot be impregnated into the fiber bundle, which will seriously affect the properties of the laminate. In view of the shortage of thermoplastic resin, a small amount of epoxy resin was added to improve the system. Resin and carbon fiber cloth were prepared into prepreg by solution method, and composite laminates were prepared by molding process. The preparation of prepreg with different solvents was studied to obtain the prepreg of high quality mixed resin. Secondly, different preparation processes were explored to obtain better fiber impregnation and excellent properties of laminates. Dynamic mechanical properties, interlaminar shear strength, coating strength and scanning electron microscopy were used to study the properties of laminates with different curing agents and different resin ratios. The results showed that the prepreg of the mixed resin system prepared by the solvent of Nu N- dimethyl acetamide (DMAC) could achieve a good prepreg effect. Through the study of the different preparation processes of the 7-layer laminates, an optimum preparation method was obtained. The dynamic mechanical properties (DMA) test showed that, compared with the laminates with three different curing agents, the two curing agents, resorcinenediamine (MPD) and diaminodiphenyl sulfone (DDS), had greater influence on the laminates. The results showed that the composite properties of M5% and M10% were excellent.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TB332

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本文編號(hào)：1913314