本文選題：木質(zhì)纖維　切入點(diǎn)：組分組成　出處：《北京化工大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

【摘要】：木質(zhì)纖維在木塑復(fù)合材料中的應(yīng)用廣泛,目前缺乏系統(tǒng)的研究。本文通過(guò)對(duì)多種來(lái)源的木質(zhì)纖維進(jìn)行系統(tǒng)的研究,建立了木塑復(fù)合材料性能的預(yù)測(cè)模型,可以為木質(zhì)纖維在木塑復(fù)合材料中的應(yīng)用提供參考。首先,本文在前人的研究基礎(chǔ)上,對(duì)現(xiàn)有的甜高粱木塑復(fù)合材料工藝進(jìn)行了優(yōu)化,并進(jìn)行了生物炭和玻璃纖維改性的探索。原料方面,主要考察了原料的殘余糖分和粒徑對(duì)木塑性能的影響,殘余糖分采用水洗預(yù)處理,粒徑應(yīng)在80目為宜。相容劑方面,經(jīng)過(guò)對(duì)比發(fā)現(xiàn)加入3%的MA-HDPE,更適用本實(shí)驗(yàn)的木塑體系。改性增強(qiáng)方面,當(dāng)生物炭的添加量為13.8%時(shí),彎曲模量的最大增長(zhǎng)率為11.8%；當(dāng)玻璃纖維添加量為20%時(shí),彎曲模量的增長(zhǎng)率達(dá)到61.6%,但綜合考慮15%為最優(yōu)的加入量。然后,對(duì)不同來(lái)源的木質(zhì)纖維的性質(zhì)進(jìn)行了多方面的研究,旨在系統(tǒng)地探究木質(zhì)纖維組分組成對(duì)木塑復(fù)合材料的性能影響。探究了玉米生長(zhǎng)時(shí)間、品種、生長(zhǎng)部位三個(gè)維度對(duì)玉米纖維組成的影響,其中不同生長(zhǎng)部位的評(píng)價(jià)結(jié)果表明：玉米桿和玉米芯制備木塑的性能最優(yōu)。不同來(lái)源的木質(zhì)纖維的考察表明玉米桿和高粱桿制備木塑復(fù)合材料的性能最優(yōu)。當(dāng)兩種原料進(jìn)行物理復(fù)配時(shí),木塑復(fù)合材料的性能為兩種原料平均值。纖維素和木質(zhì)素單獨(dú)復(fù)配時(shí),纖維素含量40%時(shí)復(fù)合材料性能最優(yōu)。最后,采用偏最小二乘法等分析方法分析了木質(zhì)纖維組分組成和材料力學(xué)性能兩者間的線性相關(guān)程度,并利用神經(jīng)網(wǎng)絡(luò)成功地建立了材料性能的預(yù)測(cè)模型,預(yù)測(cè)精度在±20%-30%。
[Abstract]:Wood fibers are widely used in wood-plastic composites, but lack of systematic research at present. In this paper, a prediction model of wood-plastic composite properties is established through systematic study of wood fibers from various sources. It can provide reference for the application of wood fiber in wood-plastic composite. Firstly, based on the previous research, the existing technology of sweet sorghum wood-plastic composite is optimized. The effects of residual sugar and particle size on the properties of wood and plastic were investigated. The residual sugar was pretreated with water washing, and the particle size should be 80 mesh. It is found that MA-HDPE with 3% is more suitable for the wood-plastic system of this experiment. In the aspect of modification and reinforcement, the maximum growth rate of flexural modulus is 11.8when the addition of biochar is 13.8, and when the amount of glass fiber is 20g, the maximum growth rate of flexural modulus is 11.8. The growth rate of flexural modulus reached 61.6%, but 15% was considered as the optimal addition. Then, the properties of wood fibers from different sources were studied in many aspects. The purpose of this study was to investigate the effects of wood fiber composition on the properties of wood-plastic composites, and to explore the effects of three dimensions of maize growth time, variety and position on the fiber composition. The evaluation results of different growth sites showed that the properties of wood plastic prepared by corn rod and corn cob were the best. The investigation of wood fiber from different sources showed that the properties of wood plastic composite prepared by corn rod and sorghum rod were the best. When the raw materials are physically compounded, The properties of wood-plastic composites are the average of two kinds of raw materials. When cellulose and lignin are mixed separately, the properties of the composites are the best when the cellulose content is 40. Finally, The linear correlation between the composition of wood fibers and the mechanical properties of materials was analyzed by partial least square method, and the prediction model of material properties was successfully established by using neural network. The prediction accuracy was 鹵20-30.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TB332

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張文濤;陳集雙;;秸塑復(fù)合材料研究及其產(chǎn)業(yè)前景[J];科技通報(bào);2016年01期

2 葉曉丹;于輝;楊慧敏;邵瓊;;木塑復(fù)合材料界面改性研究[J];竹子研究匯刊;2015年04期

3 張娟;寧莉萍;王燕高;楊永前;洪志剛;盧圓圓;;玻璃纖維改性木塑復(fù)合材料的研究現(xiàn)狀[J];化工新型材料;2015年08期

4 秦楠;馬莉英;王琳;;基于灰色神經(jīng)網(wǎng)絡(luò)木塑復(fù)合材料動(dòng)態(tài)剪切模量預(yù)測(cè)[J];價(jià)值工程;2015年14期

5 劉如;曹金珍;彭堯;;木粉組分對(duì)木塑復(fù)合材料性能的影響研究進(jìn)展[J];化工進(jìn)展;2014年08期

6 李靖;;我國(guó)木塑復(fù)合材料產(chǎn)品市場(chǎng)發(fā)展動(dòng)向[J];中國(guó)人造板;2014年02期

7 趙曉青;王芳;鄧?yán)?聶開立;劉珞;譚天偉;;酒糟/廢舊聚乙烯復(fù)合材料[J];塑料;2013年06期

8 張文杰;;硅烷偶聯(lián)劑對(duì)PP基木塑復(fù)合材料力學(xué)性能的影響[J];科技信息;2013年13期

9 許向東;劉蕊杰;胡丹;劉念皖;樊永明;;蒸汽爆破對(duì)棉桿及棉桿/HDPE復(fù)合材料性能的影響[J];塑料工業(yè);2012年10期

10 孫建平;王逢瑚;李鵬;才智;;遺傳神經(jīng)網(wǎng)絡(luò)在木塑復(fù)合材料力學(xué)性能預(yù)測(cè)中的應(yīng)用[J];高分子材料科學(xué)與工程;2012年01期

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