Paper Title:
Effect of Dry-Wet Circulation and Temperature Change on Properties of Polyurea Coatings
  Abstract

This paper mainly studies the mechanical properties and microstructure of polyurea coatings (SPUA) through the experiment of dry-wet circulation. The influence of different curing time of SPUA coating before and after the dry cycle of the mechanical properties and surface morphology changes were researched. Use the alternating temperature and low bending tests to research,the variation of temperature changes to the SPUA of different curing time. The result of the dry-wet circulation experiment shows that the tensile strength of cured 1d, 3d and 7d SPUA coating after 30d dry-wet circulation increased 9.6%、19.2% and 44.7% respectively, the tear strength increased 3.2%、5.6% and 47.3% respectively. The microstructure research shows the 7d cured SPUA coating after 30 times dry-wet circulation will reduce the holes and narrow the hole diameter in a certain degree. The temperature change experimental results show that during -20 ~50 alternating temperature process, the tensile strength of the coating appears to increase, 3d and 7d cured SPUA coating after 40d temperature alternating tensile strength changing rate is -14.2% and 9.8% respectively. Low-temperature bending test shows that the SPUA coating will not appear any cracks cracking phenomena after placed the coating in (-20+2 )for 168h.

  Info
Periodical
Advanced Materials Research (Volumes 150-151)
Edited by
Jinglong Bu, Zhengyi Jiang and Sihai Jiao
Pages
1203-1208
DOI
10.4028/www.scientific.net/AMR.150-151.1203
Citation
P. Lv, X. M. Li, W. B. Huang, "Effect of Dry-Wet Circulation and Temperature Change on Properties of Polyurea Coatings", Advanced Materials Research, Vols. 150-151, pp. 1203-1208, 2011
Online since
October 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hong Liang, Yan Wang, Tian Ping Zhou, Zhen Tao Zhang, Zhi Gang Li, Jin Fang Zhao, Te Rigele
Abstract:Abstract. Silt in some areas of our country is very extensive, its distribution is different from the cohesive soil, or sand soil, has unique...
41
Authors: Ning Jun Li, Zhen Hua Quan, Yao Hua Zhao, Na Na Guo
Chapter 1: Sustainable Utilization of Building Energy and Resources
Abstract:A new photovoltaic/thermal (PV/T) system based on the micro plate heat pipe is established in this paper, and the experimental study is...
242
Authors: Li Mei Kang, Min Lei, Jing Zou, Yi Long Liang, Xue Ping Tang
Chapter 8: Machining
Abstract:In this paper, for the purpose of seeking the control methods of temper brittleness of steel EA4T, doing some experiments on steel EA4T by...
712
Authors: Xiao Ling Yin, Dong Lin Bai, Li Cheng Li
Chapter 14: Soil and Water Conservation and Desertification Control
Abstract:In recent years, salt intrusion in estuaries of the Pearl River has become a serious problem for local water supply in dry season. Water...
4574