Effect of Mass Fraction of Color Paste in Waterborne Polyurethane Coatings on Low Temperature Blasting Properties of Polyvinyl Chloride Skin

doi:10.11944/j.issn.1000-0518.2020.02.190144

Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (2): 182-189.DOI: 10.11944/j.issn.1000-0518.2020.02.190144

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Effect of Mass Fraction of Color Paste in Waterborne Polyurethane Coatings on Low Temperature Blasting Properties of Polyvinyl Chloride Skin

PAN Ge^a,LIU Fang^a,FU Zhilei^a,LI Shuangshuang^a,XU Donghua^a^*(),XU Zhaohua^b,SHI Tongfei^a,WANG Xiaowei^a,MA Rui^a

^aState Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
^bJiangmen Polytechnic,Jiangmen,Guangdong 529090,China

Received:2019-05-17 Accepted:2019-09-04 Published:2020-02-01 Online:2020-02-06
Contact: XU Donghua
Supported by:
Supported by the National Natural Science Foundation of China(No.21274152), the Changchun Science and Technology Plan Science and Technology Innovation “Double Ten” Project Major Science and Technology Projects(No.17ss016), Jiangmen Functional Materials and Coatings Key Laboratory(No.jiangke【2018】359, No.【2018】352)

Abstract

Abstract:

In this paper, a series of waterborne polyurethane coatings with different concentration of color paste was prepared, and the coating was sprayed at the backside of polyvinyl chloride (PVC) skin of automotive instrument panel to form a composite. The spraying property of the coating was evaluated by measuring the viscosity of coating by rheometer; the glass transition temperature (T_g) of sample was characterized by differential scanning calorimeter; the tensile properties and tear resistance of sample under -30 ℃ were characterized by universal material testing machine; and the damping factor of sample was characterized by dynamic mechanical thermal analysis. It was observed that the coating with different mass fraction of color paste can be sprayed. The blasting property of PVC skin at -30 ℃ was found to be related with the damping factor of the sample rather than the T_g, tensile properties and tear resistance of sample under low temperature. The bigger the value of damping factor was, the better the lasting property of PVC skin with coating layer had.

Key words: waterborne polyurethane coating, damping material, mass fraction of color paste, rheology, low temperature blasting

PAN Ge, LIU Fang, FU Zhilei, LI Shuangshuang, XU Donghua, XU Zhaohua, SHI Tongfei, WANG Xiaowei, MA Rui. Effect of Mass Fraction of Color Paste in Waterborne Polyurethane Coatings on Low Temperature Blasting Properties of Polyvinyl Chloride Skin[J]. Chinese Journal of Applied Chemistry, 2020, 37(2): 182-189.

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Effect of Mass Fraction of Color Paste in Waterborne Polyurethane Coatings on Low Temperature Blasting Properties of Polyvinyl Chloride Skin

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