本文關(guān)鍵詞：SMS超細(xì)紡絲原料及其復(fù)合工藝的研究　出處：《天津工業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 聚丙烯 功能母粒 超細(xì)纖維 SMS非織造材料 熔噴非織造材料 醫(yī)用非織造材料

【摘要】：SMS非織造材料是基于非織造復(fù)合技術(shù)所制備的柔性多層級(jí)纖維材料,是由紡粘長絲纖維夾持熔噴超細(xì)纖維所組成的功能型復(fù)合材料。SMS非織造材料既有優(yōu)良的屏蔽性能,又具有良好的力學(xué)性能。隨著經(jīng)濟(jì)的發(fā)展,非織造技術(shù)的進(jìn)步提高,人們對(duì)醫(yī)用材料的舒適性能也提出了更高的要求,開發(fā)新型超細(xì)SMS非織造材料及功能性SMS非織造材料已經(jīng)成為了研究熱點(diǎn)和新產(chǎn)品開發(fā)的突破點(diǎn)�，F(xiàn)有研究已經(jīng)表明降低纖維細(xì)度、添加功能性母粒等方法最為簡單有效的提高纖維的柔軟性和手感。1、本論文從聚合物原料開始研究,利用高分子流變學(xué)及近代測試分析技術(shù),對(duì)聚丙烯切片及功能聚丙烯切片的微觀結(jié)構(gòu)、結(jié)晶度、熔融指數(shù)及表觀剪切粘度進(jìn)行測試,并制備新型功能母粒。在熔體溫度為175℃,EVA粉末的添加量為7%時(shí)使被改性的聚丙烯的熔融指數(shù)提高了 240g/10min。2、從原料上選擇適合紡絲成網(wǎng)的聚丙烯,在小型的熔噴設(shè)備上研究不同紡絲溫度、不同的聚合物流量及不同接收距離下,工藝參數(shù)對(duì)熔噴非織材料的細(xì)度和力學(xué)性能的影響;研究在相同的工藝參數(shù)下,添加的不同性質(zhì)的功能母粒切片對(duì)熔噴非織造材料的影響。在接受距離為15cm,計(jì)量泵轉(zhuǎn)速為8Hz,熔體溫度為240℃的條件,原料3中加入5%的EVA改性切片,所制備的熔噴非織造材料的細(xì)度為1.03μm,同樣的工藝參數(shù)下,在加入5%S8803的柔軟母粒,所制備的熔噴非織造材料的細(xì)度為1.12μm。3、在大型SXMS設(shè)備進(jìn)行紡粘/熔噴復(fù)合非織造材料的制備,并探究原料的種類及復(fù)合工藝參數(shù)對(duì)SMS非制造材料的力學(xué)性能及纖維細(xì)度的影響,探究未經(jīng)后整理的SMS產(chǎn)品的醫(yī)用屏蔽性能的。在紡粘層添加了 30%彈性體PP,SMS力學(xué)性能提高了 5倍;在軋機(jī)溫度設(shè)置為120℃,軋輥壓力為60N,添加3.5%的S8803的SMS非織產(chǎn)品的柔軟性能最好。本論文的研究為紡粘/熔噴工藝實(shí)際生產(chǎn)中對(duì)聚丙烯切片的選擇提供了理論和實(shí)踐基礎(chǔ),對(duì)超薄、超柔軟、高彈性、高強(qiáng)力的醫(yī)用SMS非織造材料的研究和開發(fā)有著極其重要的意義。
[Abstract]:SMS nonwovens are flexible multilayer fiber materials based on nonwovens composite technology. It is a functional composite. SMS nonwovens which is composed of spunbonded filament fiber and fusion-blown ultrafine fiber has excellent shielding performance and good mechanical properties. With the development of economy. With the improvement of nonwovens technology, people have put forward higher requirements for the comfort of medical materials. The development of new ultrafine SMS nonwovens and functional SMS nonwovens has become a research hotspot and a breakthrough point in the development of new products. Adding functional masterbatch is the most simple and effective way to improve the softness and feel of the fiber. This paper starts with the study of polymer raw materials, using polymer rheology and modern testing and analysis technology. The microstructure, crystallinity, melting index and apparent shear viscosity of polypropylene chip and functional polypropylene chip were measured, and a new functional masterbatch was prepared at the melt temperature of 175 鈩，

本文編號(hào)：1437016