本文選題：竹原纖維 + 表面改性��； 參考：《復(fù)合材料學(xué)報(bào)》2017年02期

【摘要】：采用堿處理、堿-偶聯(lián)劑聯(lián)合處理對(duì)竹原纖維進(jìn)行表面改性,通過(guò)縫合-模壓工藝制備了單向連續(xù)竹原纖維/不飽和聚酯樹脂(BF/UP)復(fù)合材料。研究了不同表面改性方法對(duì)BF/UP復(fù)合材料靜態(tài)、動(dòng)態(tài)力學(xué)性能、吸水性能等的影響,并用SEM、紅外光譜等技術(shù)研究了改性處理后纖維的表面及復(fù)合材料界面結(jié)合情況。結(jié)果表明:經(jīng)過(guò)不同表面處理后BF/UP復(fù)合材料的性能均有所改善。當(dāng)采用5wt%堿-3wt%偶聯(lián)劑聯(lián)合處理時(shí),BF/UP復(fù)合材料綜合性能最優(yōu),其拉伸強(qiáng)度、彎曲強(qiáng)度、彎曲模量、剪切強(qiáng)度較未處理的分別提高了34.29%、15.95%、11.26%、29.39%;復(fù)合材料存儲(chǔ)模量(33℃)較未處理的提高了63.80%,損耗因子有所降低;BF/UP復(fù)合材料24h、720h吸水率較未處理的分別減小了55.35%、27.32%。SEM和紅外光譜結(jié)果表明,改性處理后竹原纖維表面雜質(zhì)減少,附著了一層偶聯(lián)劑膜,BF/UP復(fù)合材料中纖維與樹脂之間的界面結(jié)合更好。
[Abstract]:The surface of bamboo fiber was modified by alkali treatment and alkali-coupling agent. Unidirectional continuous bamboo fiber / unsaturated polyester resin / BF / UPU composite was prepared by suture molding process. The effects of different surface modification methods on the static, dynamic and water-absorbing properties of BF/UP composites were studied. The results showed that the properties of BF/UP composites were improved after different surface treatments. When treated with 5wt% alkali-3wt% coupling agent, the BF / up composite has the best comprehensive properties, its tensile strength, flexural modulus, Compared with the untreated composites, the shear strength increased 34.29% and the storage modulus of the composites increased 63.80, and the loss factor decreased by 55.3527.32. SEM and infrared spectroscopy, respectively, when compared with the untreated composites at 24 h or 720 h. The results of SEM and IR spectra showed that the shear strength of the composites was higher than that of the untreated composites. The shear strength was increased by 34.29% and the storage modulus of the composites was increased by 33 鈩，

本文編號(hào)：1895150