Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (08): 22-26.doi: 10.13475/j.fzxb.20190604305

• Fiber Materials • Previous Articles     Next Articles

Preparation and properties of SiO2 aerogel/polyester-polyethylene bicomponent fiber composite thermal insulation materials

ZHANG Lingyun, QIAN Xiaoming(), ZOU Chi, ZOU Zhiwei   

  1. School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
  • Received:2019-06-18 Revised:2020-05-14 Online:2020-08-15 Published:2020-08-21
  • Contact: QIAN Xiaoming E-mail:qxm@tiangong.edu.cn

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Abstract:

Aiming to develop a composite thermal insulation nonwovens with better comprehensive properties, the polyester-polyethylene fiber with a bicomponent skin/core structure was used as the main composite, the SiO2 aerogel powder was adhesioned on composite fiber surface by natural sedimentation method, the composite nonwoven materials with SiO2 aerogel/polyester-polyethylene fiber were made by hot-blast nonwoven production line. The content of SiO2 aerogel powder, microstructure, thermal insulation, elastic energy of compression, tensile property and permeability of the composite were studied. Results show that the SiO2 aerogel powder and polyester-polyethylene fiber web can be effectively combined, the addition of SiO2 aerogel powder has a certain supporting effect to polyester-polyethylene fiber, which can enhance the compressive elastic energy and tensile properties of the nonwoven composites. Meanwhile, due to the increase of still air between fibers, the thermal insulation performance of the composites is also improved.

Key words: SiO2 aerogel, polyester-polyethylene bicomponent fiber, hot-blast technology, nonwoven material, composite thermal insulation material

CLC Number: 

  • TS176

Fig.1

Production process flow"

Tab.1

Setting of sample parameter"

试样
编号		 纤维线密
度/tex		 纤维网厚
度/mm		 纤维网面密度/
(g·m-2)		 SiO2粉末质
量分数/%
1# 0.3 5.45 61.3 0
2# 0.3 5.79 62.1 5
3# 0.3 5.42 59.6 10
4# 0.3 5.97 62.4 15
5# 0.3 5.81 60.5 20
6# 0.1 3.77 60.2 0
7# 0.1 3.79 59.3 5
8# 0.1 3.58 60.4 10
9# 0.1 3.07 58.2 15
10# 0.1 3.28 59.8 20

Tab.2

SiO2 powder mass fraction on composite thermal insulation material"

试样
编号		 纤维网质量/g SiO2气凝胶
质量分数/%
热风处理前 热风处理后
1# 3.83 3.83 0.0
2# 3.88 3.96 2.0
3# 3.72 3.87 4.0
4# 3.90 4.14 6.2
5# 3.78 4.09 8.2
6# 3.76 3.76 0.0
7# 3.71 3.78 2.0
8# 3.77 3.93 4.2
9# 3.64 3.88 6.6
10# 3.74 4.06 8.5

Fig.2

Surface microstructure of SiO2 aerogel/PET-PE fiber composite thermal insulation materials"

Fig.3

Variation curve of SiO2 aerogel powder mass fraction and crow value"

Fig.4

Variation curve of SiO2 aerogel powder mass fraction and compression resilience"

Fig.5

Variation curve of SiO2 aerogel powder mass fraction and fracture strength"

Fig.6

Variation curve of SiO2 aerogel powder mass fraction and permeability"

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