成膜基材对含氟丙烯酸酯/聚氨酯复合乳液自组织梯度化结构的影响

doi:10.11868/j.issn.1001-4381.2019.000518

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Abstract

Fluoroacrylate/polyurethane composite emulsion (FPAPU) were synthesized by miniemulsion polymerization. The effect of four kinds of materials with different surface properties (aluminum plate, stainless steel plate, PTFE plate and glass plate) on the self-organized gradient distribution structure of fluorine-containing components in FPAPU latex film was studied. The results show that the gradient structure is not obvious when the film is formed on aluminum and stainless steel plate respectively. The gradient structure is obvious when the film is formed on PTFE and glass substrate respectively. Especially for the film formed on the glass plate, the content of fluorinated component is increased from film-substrate (F-S) surface to film-air (F-A) surface, and the difference of both sides of the film is obvious. The surface free energy difference can reach 11.71 mN/m. The apparent stratification structure is formed from F-S surface to F-A surface, and F-A surface is relatively rough. The film formed on glass substrate has excellent hydrophobicity and oleophobicity, and the contact angle of water and oil (diiodomethane) on which can reach 121.6ånd 90.6°respectively.

Key words： fluoroacrylate gradient structure film-forming substrate surface property self organization

Received: 02 June 2019 Published: 18 March 2020

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Corresponding Authors: Hua XIN E-mail: 55231588@qq.com

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	Hua XIN
	Jian-fang LIU
	Jiang-peng YANG
	Hui ZHANG
	Xing ZHAO

Cite this article:

Hua XIN,Jian-fang LIU,Jiang-peng YANG, et al. Influence of film forming substrate on self-organized gradient structure of fluoroacrylate/polyurethane composite emulsion[J]. Journal of Materials Engineering, 2020, 48(3): 59-65.

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http://jme.biam.ac.cn/EN/10.11868/j.issn.1001-4381.2019.000518 OR http://jme.biam.ac.cn/EN/Y2020/V48/I3/59

IR spectra of FPAPU and WPU blending latex film

¹⁹F-NMR spectrum of FPAPU

Particle size and distribution of WPU(a) and FPAPU(b) emulsions

TEM images of WPU(a) and FPAPU(b) emulsions

Contact angle and surface energy of FPAPU latex film air surface and substrate surface with different substrates

Cross-sectional SEM images of PUFPA latex films with different substrates
(a)aluminum; (b)stainless steel; (c)PTFE; (d)glass

AFM images of FPAPU latex films air surface with different substrates
(a)aluminum; (b)stainless steel; (c)PTFE; (d)glas

FPAPU latex films air surface roughness parameters with different substrates

EDS spectra of F element in FPAPU latex films with different substrates
(a)aluminum; (b)stainless steel; (c)PTFE; (d)glass

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