發(fā)布時(shí)間：2018-04-21 13:08

  本文選題：魔芋葡甘聚糖 + 蜂窩紙板�。� 參考：《浙江理工大學(xué)》2017年碩士論文

【摘要】：隨著社會(huì)的發(fā)展,在我們生活中各類產(chǎn)品的流通越來(lái)越頻繁,蜂窩紙板在運(yùn)輸過(guò)程中起著重要的作用。蜂窩紙板是一種結(jié)構(gòu)新穎、質(zhì)輕價(jià)廉、承載和緩沖性能優(yōu)異的綠色包裝材料。在制造、存儲(chǔ)和使用過(guò)程中由于紙質(zhì)包裝材料本身固有的吸濕性,對(duì)環(huán)境濕度十分敏感,受環(huán)境因素影響大。我國(guó)大部分南方地區(qū)年平均相對(duì)濕度在70%RH到80%RH,有時(shí)高達(dá)90%RH。因此,研究蜂窩紙板防潮性能具有很大的意義。大量實(shí)驗(yàn)結(jié)果表明,紙板在環(huán)境相對(duì)濕度為40%RH-50%RH時(shí)力學(xué)性能最佳。傳統(tǒng)防潮方法對(duì)紙板濕度影響的單向調(diào)節(jié),難以使紙板始終保持良好的性能,調(diào)濕材料則可以實(shí)現(xiàn)濕度的雙向調(diào)節(jié)。將調(diào)濕材料與蜂窩紙板復(fù)合,制備具有雙向濕度調(diào)節(jié)功能的復(fù)合蜂窩紙板,不僅解決了蜂窩紙板受潮問(wèn)題,還能解決紙板過(guò)于干燥,變脆問(wèn)題。本文以丙烯酸-丙烯酸鈉-丙烯酰胺共聚物為吸放濕材料,魔芋葡甘聚糖(KGM)為調(diào)濕引導(dǎo)材料和成膜劑,以微波發(fā)泡方法原位發(fā)泡方式制備發(fā)泡調(diào)濕復(fù)合材料,再與蜂窩紙板復(fù)合制備具有調(diào)濕功能的復(fù)合蜂窩紙板。研究了微波發(fā)泡功率、丙烯酸-丙烯酸鈉與丙烯酰胺質(zhì)量之比和發(fā)泡調(diào)濕復(fù)合材料的含水量等因素對(duì)發(fā)泡調(diào)濕復(fù)合材料發(fā)泡性能和調(diào)濕性能的影響,然后研究了具有調(diào)濕功能的復(fù)合蜂窩紙板的緩沖性能和調(diào)濕性能,最后研究高濕度、低濕度及適宜濕度環(huán)境下調(diào)濕復(fù)合蜂窩紙板的緩沖性能,驗(yàn)證調(diào)濕復(fù)合蜂窩紙板的濕度調(diào)節(jié)功能。主要結(jié)果如下:(1)發(fā)泡調(diào)濕復(fù)合材料的最佳發(fā)泡倍率為6.5倍,泡孔均勻,具有開(kāi)孔與閉孔,孔穴表面具有圓形坑狀孔穴,可實(shí)現(xiàn)物理吸附水,使得該發(fā)泡材料吸/放濕的作用增強(qiáng)。(2)發(fā)泡調(diào)濕復(fù)合材料的制備及性能影響因素研究:隨著微波功率的增加,發(fā)泡倍率越大,泡孔越大,可實(shí)現(xiàn)物理吸附水的量也越大,其吸放濕率越高,調(diào)濕性能也越好。隨著丙烯酸-丙烯酸鈉與丙烯酰胺質(zhì)量之比的減小,發(fā)泡倍率越大吸放濕率越小,調(diào)濕性能下降。隨著水含量的增加,發(fā)泡倍率越大,泡孔越大,吸放濕率越高,調(diào)濕性能越好。(3)具有調(diào)濕功能的復(fù)合蜂窩紙板的緩沖性能與調(diào)濕性能研究:調(diào)濕復(fù)合蜂窩紙板可主動(dòng)調(diào)節(jié)內(nèi)環(huán)境濕度,將內(nèi)環(huán)境濕度保持在50±5%RH,可以有效解決了蜂窩紙板力學(xué)性能受濕度影響帶來(lái)的問(wèn)題。三種濕度狀態(tài)下:30%RH、50%RH及80%RH的調(diào)濕復(fù)合蜂窩紙板的緩沖性能均優(yōu)于傳統(tǒng)蜂窩紙板,說(shuō)明調(diào)濕功能的復(fù)合蜂窩紙板不僅能夠調(diào)節(jié)濕度,原位填充后的調(diào)濕復(fù)合蜂窩紙板的平臺(tái)應(yīng)力、吸收能量等各項(xiàng)參數(shù)都有所提升。50%RH濕度下的傳統(tǒng)蜂窩紙板與調(diào)濕功能的復(fù)合蜂窩紙板的各項(xiàng)性能優(yōu)于30%RH與80%RH濕度下的各項(xiàng)性能。具有調(diào)濕功能的復(fù)合蜂窩紙板不僅克服了傳統(tǒng)蜂窩紙板性能受濕度影響大的缺陷,還顯著降低初始峰值應(yīng)力,極大地提高了平臺(tái)應(yīng)力和能量吸收能力,具有更大的應(yīng)用前景。
[Abstract]:With the development of society, the circulation of all kinds of products is becoming more and more frequent in our life. Honeycomb paperboard plays an important role in the transportation process. Honeycomb paperboard is a kind of green packaging material with novel structure, light weight and low price, excellent bearing capacity and cushioning performance. Due to the inherent hygroscopicity of paper packaging materials in manufacturing, storage and use, they are sensitive to environmental humidity and greatly affected by environmental factors. The average annual relative humidity in most southern regions of China ranges from 70%RH to 80 RHs, sometimes as high as 90 RHs. Therefore, it is of great significance to study the moisture-proof property of honeycomb paperboard. A large number of experimental results show that the mechanical properties of paperboard are the best when the environmental relative humidity is 40%RH-50%RH. It is difficult to keep good performance of paperboard by unidirectional adjustment of the influence of traditional moisture-proof method on the humidity of paperboard, while moisture adjusting material can realize bidirectional adjustment of humidity. Compound honeycomb paperboard with humidifying material and honeycomb board is prepared, which can not only solve the moisture problem of honeycomb paperboard, but also solve the problem of too dry and brittle paperboard. In this paper, using acrylic acid-sodium acrylate acrylamide copolymer as moisture absorbent material, konjac glucomannan (KGM) as humidifying guide material and film forming agent, foaming and humidifying composites were prepared by microwave foaming in situ. The composite honeycomb paperboard with humidification function is prepared by recombination with honeycomb board. The effects of microwave foaming power, mass ratio of acrylic acid-sodium acrylate to acrylamide and moisture content of foaming and humidifying composites on foaming and humidifying properties of foaming and humidifying composites were studied. Then the cushioning performance and humidification performance of the compound honeycomb paperboard with the function of humidification were studied. Finally, the cushioning performance of the humidified composite honeycomb paperboard with high humidity, low humidity and suitable humidity was studied. Verify the humidity adjustment function of humidified composite honeycomb paperboard. The main results are as follows: (1) the optimum foaming ratio of foaming and humidifying composite is 6.5 times, the bubble pore is uniform, there are open and closed pores, and the surface of the cavity has circular pits, which can achieve physical adsorption of water. The preparation of foaming and humidifying composite and its influencing factors are as follows: with the increase of microwave power, the bigger the foaming ratio and the bigger the bubble pore, the larger the amount of physical water absorption can be realized. The higher the moisture absorption and desorption rate, the better the moisture regulation performance. With the decrease of the mass ratio of acrylic acid to sodium acrylate to acrylamide, the bigger the foaming ratio is, the smaller the moisture absorption and desorption rate is, and the moisture regulating performance decreases. With the increase of water content, the greater the foaming ratio, the larger the bubble pore, the higher the moisture absorption and desorption rate. Study on the cushioning performance and humidity Adjustment performance of Composite Honeycomb Paperboard with Moisturizing function: humidifying compound Honeycomb Board can actively adjust the humidity of the inner environment, Keeping the humidity of the inner environment at 50 鹵5 RH can effectively solve the problem that the mechanical properties of honeycomb paperboard are affected by humidity. Under three kinds of humidity, the cushioning performance of the humidified honeycomb board of RH 50 and 80%RH is superior to that of the traditional honeycomb paperboard, which shows that the humidifying function of the compound honeycomb paperboard can not only adjust the humidity, but also the platform stress of the humidified composite honeycomb board after in-situ filling. The properties of traditional honeycomb paperboard and compound honeycomb board with humidification function were better than those of 30%RH and 80%RH humidity. The compound honeycomb paperboard with the function of humidification not only overcomes the shortcoming that the performance of the traditional honeycomb paperboard is greatly affected by humidity, but also remarkably reduces the initial peak stress, greatly improves the platform stress and energy absorption ability, and has a greater application prospect.
【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】：2017
【分類號(hào)】：TB33

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