基于竹塑復(fù)合材料的竹漿纖維ATRP表面改性的研究
本文選題:竹纖維復(fù)合材料 + ATRP。 參考:《浙江理工大學(xué)》2015年碩士論文
【摘要】:塑料作為一種應(yīng)用范圍廣、使用量巨大的材料,已經(jīng)滲透到生活的各個(gè)方面。隨著社會(huì)的進(jìn)一步發(fā)展,對(duì)塑料的性能提出了更高的要求,單一的塑料往往不能滿足使用要求,復(fù)合材料由于具有更多更全面的性能而由此應(yīng)運(yùn)而生。盡管塑料之間的復(fù)合能夠提高塑料的性能,然而在來(lái)源、價(jià)格、廢棄物回收利用降解方面存在著復(fù)雜的問(wèn)題。因此,發(fā)展全新的復(fù)合材料是時(shí)代賦予我們的新課題。 植物纖維復(fù)合材料具有來(lái)源廣泛、價(jià)格低廉、并且易降解的優(yōu)點(diǎn),用植物纖維復(fù)合材料代替?zhèn)鹘y(tǒng)塑料將是當(dāng)今復(fù)合材料行業(yè)的發(fā)展趨勢(shì)。竹子作為一種天然的結(jié)構(gòu)復(fù)合材料,具有防水性好、強(qiáng)度高、彈性好、比重小、價(jià)格便宜、生長(zhǎng)速度快的優(yōu)點(diǎn)。因此竹纖維復(fù)合材料將成為一種亟待開發(fā)應(yīng)用的新材料。 本文以硫酸鹽法竹漿纖維為原料,2-溴異丁酰溴;駶{纖維,通過(guò)對(duì)不同反應(yīng)溫度、不同反應(yīng)時(shí)間和不同打漿度竹漿纖維制備的大分子引發(fā)劑比較分析,確定了在本實(shí)驗(yàn)的最佳的大分子引發(fā)劑制備方案。應(yīng)用原子轉(zhuǎn)移自由基聚合(ATRP)和電子活化再生原子轉(zhuǎn)移自由基聚合(AGETATRP)兩種不同方法對(duì)竹漿纖維進(jìn)行了表面接枝甲基丙烯酸甲酯進(jìn)行改性通過(guò)對(duì)接枝后產(chǎn)物的比較,發(fā)現(xiàn)采用AGETATRP法對(duì)竹漿纖維進(jìn)行改性具有較好的效果。最后通過(guò)研究AGETATRP反應(yīng)的單體的濃度,,催化劑的含量,反應(yīng)的時(shí)間以及反應(yīng)的溫度對(duì)改性后產(chǎn)物產(chǎn)量的影響,確定了比較適合的改性條件。 確定適合的的改性條件之后,又進(jìn)行了在竹漿纖維表面接枝甲基丙烯酸縮水甘油酯和異戊二烯,以擴(kuò)大竹纖維的接枝應(yīng)用范圍。為以后竹纖維復(fù)合材料的制備提供更多的增強(qiáng)體選擇。
[Abstract]:Plastics as a wide range of applications, the use of huge materials, has penetrated into all aspects of life. With the further development of society, the performance of plastics has been put forward higher requirements, a single plastic often can not meet the requirements of the use of composite materials because of more and more comprehensive properties came into being. Although the combination of plastics can improve the properties of plastics, there are complex problems in source, price, waste recycling and degradation. Therefore, the development of new composite materials is a new topic given by the times. Plant fiber composites have the advantages of wide source, low price and easy degradation. It will be the development trend of composite materials industry to replace traditional plastics with plant fiber composites. As a natural structural composite, bamboo has the advantages of good waterproof, high strength, good elasticity, small proportion, low price and fast growth rate. Therefore, bamboo fiber composites will become a new material to be developed and applied. In this paper, using Kraft bamboo pulp fiber as raw material, the macromolecular initiators of bamboo pulp fiber prepared by different reaction temperature, different reaction time and different beating degree were compared and analyzed. The best preparation method of macromolecular initiator in this experiment was determined. Two different methods of atom transfer radical polymerization (ATRP) and electron activated regenerated atom transfer radical polymerization (AGETATRP) were used to modify bamboo pulp fiber by grafting methyl methacrylate on the surface. It was found that the modified bamboo pulp fiber by AGETATRP had better effect. Finally, the effects of monomer concentration, catalyst content, reaction time and reaction temperature on the yield of the modified product were studied, and the suitable modification conditions were determined. After the suitable modification conditions were determined, glycidyl methacrylate and isoprene were grafted on the surface of bamboo pulp fiber to expand the application range of bamboo fiber grafting. It provides more choice of reinforcements for the preparation of bamboo fiber composites in the future.
【學(xué)位授予單位】:浙江理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TB33;TQ351.01
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