利用復(fù)配剪切增稠流體提高紡織復(fù)合材料的隔聲性能
發(fā)布時(shí)間：2019-01-06 10:12
【摘要】：用于噪聲控制的隔聲材料，對(duì)環(huán)境保護(hù)有重要的作用。但傳統(tǒng)的隔聲材料一般以增加面密度來提高隔聲性能，因而質(zhì)量重或厚度大，對(duì)其使用范圍等有很大影響；剪切增稠流體(STF)作為一種新型功能材料備受關(guān)注，在防彈防刺材料中已有應(yīng)用。由于聲波入射過程中也有剪切力存在，可以想象，增稠過程中將吸收聲能，從而增加材料的隔聲效果。但對(duì)于常規(guī)剪切增稠流體，提高二氧化硅粒子(SiO2)的含量雖然可以提高體系的剪切增稠效果，但SiO2含量過高，，存在著加工困難和質(zhì)量密度偏高的問題。 本論文為了進(jìn)一步提高紡織復(fù)合材料的隔聲性能，探索性地提出了利用復(fù)配剪切增稠流體對(duì)織物進(jìn)行處理，提高紡織復(fù)合材料的隔聲性能的方法。為此，論文首先研究復(fù)配剪切增稠流體的制備工藝，并對(duì)其流變性能、增稠機(jī)理等進(jìn)行了分析。并進(jìn)一步地，選用剪切增稠效果較佳的復(fù)配剪切增稠流體處理織物，制備復(fù)配剪切增稠流體修飾織物隔聲復(fù)合材料，并對(duì)復(fù)合材料的隔音性能進(jìn)行了研究。在此基礎(chǔ)上，通過熱壓層合技術(shù)，制備具有不同層合結(jié)構(gòu)的隔聲紡織復(fù)合材料�？疾炝私Y(jié)構(gòu)因素以及流體處理對(duì)其隔聲性能的影響，以期通過上述處理進(jìn)一步提高紡織復(fù)合材料的隔聲性能。 首先，論文在以SiO2為第一分散相的基礎(chǔ)上，提出了分別以線狀的埃洛石納米管(HNT)和體狀的四針狀氧化鋅晶須(TW-ZnO)為第二分散相，制備HNT-SiO2和TW-ZnO/SiO2兩類復(fù)配剪切增稠流體體系的方法，并對(duì)其剪切增稠性能進(jìn)行研究。研究結(jié)果表明：添加少量的第二相分散相，就可以大大改善流體的剪切增稠性能。其中，采用SiO2/HNT配比為25/0.10時(shí)得到的復(fù)配剪切增稠流體具有最佳的增稠效果。 其次，使用復(fù)配剪切增稠流體分別對(duì)兩種不同織造結(jié)構(gòu)的玻璃纖維織物進(jìn)行處理，制備得到STF-織物隔聲紡織品，并就流體處理對(duì)織物微觀形貌和隔聲性能的影響進(jìn)行研究。結(jié)果表明，剪切增稠流體特有的增稠特性能有效吸收聲能、削弱震動(dòng)，提高了織物的整體隔聲性能。其中，SiO2/HNT為25/0.10時(shí)復(fù)配剪切增稠流體對(duì)織物隔聲性能具有最佳的改善效果。 再次，通過對(duì)復(fù)合材料的結(jié)構(gòu)進(jìn)行設(shè)計(jì)并借助熱壓層合技術(shù)制備得到了不同層合結(jié)構(gòu)的隔聲復(fù)合材料，研究了結(jié)構(gòu)因素材料隔聲量的影響，研究結(jié)果表明：復(fù)合結(jié)構(gòu)的差異會(huì)對(duì)材料的隔聲效果產(chǎn)生一定影響，其中分體式三明治夾心結(jié)構(gòu)具有最佳的隔聲效果。在此基礎(chǔ)上，以STF-織物為基礎(chǔ)結(jié)合最優(yōu)結(jié)構(gòu)制備隔聲紡織復(fù)合材料，研究了復(fù)合材料的隔聲性能。結(jié)果表明，與未經(jīng)剪切增稠流體改性的織物制備的復(fù)合材料相比，采用STF-織物制備的復(fù)合材料顯示了優(yōu)異的隔聲效果。
[Abstract]:Sound insulation materials used in noise control play an important role in environmental protection. However, the traditional sound insulation materials generally increase the surface density to improve the sound insulation performance, so the weight or thickness of the material has a great impact on the range of its use. As a new functional material, shear thickening fluid (STF) has been widely used in bulletproof materials. Due to the existence of shear force in the sound wave incident process, it can be imagined that the sound energy will be absorbed in the thickening process, thus increasing the sound insulation effect of the material. However, for conventional shear thickening fluid, increasing the content of silica particle (SiO2) can improve the shear thickening effect of the system, but the content of SiO2 is too high, which is difficult to process and has high mass density. In this paper, in order to improve the sound insulation of textile composites, a method is proposed to improve the sound insulation of textile composites by using the composite shear thickening fluid to treat the fabric. Therefore, the preparation process of the compound shear thickening fluid was studied, and its rheological properties and thickening mechanism were analyzed. Furthermore, the sonic insulation composites modified by shear thickening fluid were prepared by using the composite shear thickening fluid treated fabric with better shear thickening effect, and the sound insulation properties of the composite were studied. On this basis, sound insulation textile composites with different laminated structures were prepared by hot lamination technology. The effects of structural factors and fluid treatment on the sound insulation of textile composites were investigated in order to improve the sound insulation of textile composites. Firstly, on the basis of SiO2 as the first dispersed phase, the second dispersion phase is proposed, which is the linear (HNT) and the tetra-needle zinc oxide whisker (TW-ZnO), respectively. Two kinds of mixed shear thickening fluid systems, HNT-SiO2 and TW-ZnO/SiO2, were prepared and their shear thickening properties were studied. The results show that the shear thickening property of the fluid can be greatly improved by adding a small amount of second phase dispersed phase. The composite shear thickening fluid with SiO2/HNT ratio of 25 / 0.10 has the best thickening effect. Secondly, two kinds of glass fiber fabrics with different weaving structures were treated with mixed shear thickening fluid to prepare STF- fabric sound insulation textiles, and the effects of fluid treatment on the microstructure and sound-insulation properties of the fabrics were studied. The results show that the thickening characteristic of shear thickening fluid can effectively absorb sound energy, weaken vibration and improve the overall sound insulation of fabric. The composite shear thickening fluid with SiO2/HNT of 25 / 0.10 has the best effect on the sound insulation of the fabric. Thirdly, the sound insulation composites with different laminated structures are obtained by designing the structure of the composites and by means of the thermal lamination technology. The influence of the structural factors on the sound insulation of the composites is studied. The results show that the difference of composite structure will have a certain effect on the sound insulation of the material, among which the split sandwich structure has the best sound insulation effect. On the basis of this, sound insulation textile composites were prepared on the basis of STF- fabric and optimum structure, and the sound insulation properties of the composites were studied. The results showed that compared with the composites prepared by unshearing thickening fluid, the composites prepared with STF- fabric showed excellent sound insulation effect.
【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)】：TS106;TB33
本文編號(hào)：2402668
[Abstract]:Sound insulation materials used in noise control play an important role in environmental protection. However, the traditional sound insulation materials generally increase the surface density to improve the sound insulation performance, so the weight or thickness of the material has a great impact on the range of its use. As a new functional material, shear thickening fluid (STF) has been widely used in bulletproof materials. Due to the existence of shear force in the sound wave incident process, it can be imagined that the sound energy will be absorbed in the thickening process, thus increasing the sound insulation effect of the material. However, for conventional shear thickening fluid, increasing the content of silica particle (SiO2) can improve the shear thickening effect of the system, but the content of SiO2 is too high, which is difficult to process and has high mass density. In this paper, in order to improve the sound insulation of textile composites, a method is proposed to improve the sound insulation of textile composites by using the composite shear thickening fluid to treat the fabric. Therefore, the preparation process of the compound shear thickening fluid was studied, and its rheological properties and thickening mechanism were analyzed. Furthermore, the sonic insulation composites modified by shear thickening fluid were prepared by using the composite shear thickening fluid treated fabric with better shear thickening effect, and the sound insulation properties of the composite were studied. On this basis, sound insulation textile composites with different laminated structures were prepared by hot lamination technology. The effects of structural factors and fluid treatment on the sound insulation of textile composites were investigated in order to improve the sound insulation of textile composites. Firstly, on the basis of SiO2 as the first dispersed phase, the second dispersion phase is proposed, which is the linear (HNT) and the tetra-needle zinc oxide whisker (TW-ZnO), respectively. Two kinds of mixed shear thickening fluid systems, HNT-SiO2 and TW-ZnO/SiO2, were prepared and their shear thickening properties were studied. The results show that the shear thickening property of the fluid can be greatly improved by adding a small amount of second phase dispersed phase. The composite shear thickening fluid with SiO2/HNT ratio of 25 / 0.10 has the best thickening effect. Secondly, two kinds of glass fiber fabrics with different weaving structures were treated with mixed shear thickening fluid to prepare STF- fabric sound insulation textiles, and the effects of fluid treatment on the microstructure and sound-insulation properties of the fabrics were studied. The results show that the thickening characteristic of shear thickening fluid can effectively absorb sound energy, weaken vibration and improve the overall sound insulation of fabric. The composite shear thickening fluid with SiO2/HNT of 25 / 0.10 has the best effect on the sound insulation of the fabric. Thirdly, the sound insulation composites with different laminated structures are obtained by designing the structure of the composites and by means of the thermal lamination technology. The influence of the structural factors on the sound insulation of the composites is studied. The results show that the difference of composite structure will have a certain effect on the sound insulation of the material, among which the split sandwich structure has the best sound insulation effect. On the basis of this, sound insulation textile composites were prepared on the basis of STF- fabric and optimum structure, and the sound insulation properties of the composites were studied. The results showed that compared with the composites prepared by unshearing thickening fluid, the composites prepared with STF- fabric showed excellent sound insulation effect.
【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)】：TS106;TB33
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