Aging behavior of the three-proof polyurethane coating under UV radiation

被引：1

作者：

Wang, Jianfa ^{[1
]}

Gu, Zheng ^{[1
,2
]}

Zhao, Jie ^{[1
]}

Zhang, Susu ^{[1
]}

Li, Peiyao ^{[3
]}

Meng, Chao ^{[1
]}

Sui, Jinyong ^{[1
]}

Zhang, Xiaoyi ^{[1
]}

Hu, Shaokai ^{[1
]}

Pan, Jiaying ^{[3
]}

Li, Junyi ^{[3
]}

机构：

[1] Qingdao Univ, Coll Chem & Chem Engn, Qingdao 266071, Peoples R China

[2] Qingdao Univ, Weihai Innovat Inst, Qingdao 264200, Peoples R China

[3] Coll Mat Sci & Engn, Qingdao 266071, Peoples R China

来源：

POLIMERY | 2022年 / 67卷 / 09期

关键词：

polyurethane; ultraviolet; coating; resin; DEGRADATION;

D O I：

10.14314/polimery.2022.9.4

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The influence of UV radiation on the gloss, structure (SEM, FTIR), thermal (TGA, DTG) and mechanical properties of polyurethane resins and the three-layer protective coating made of them was investigated. The gloss of the resins was greater than that of the protective coating. UV radiation has been proven to reduce gloss (at 1,200 hours irradiation, 81.3 degrees to 8.9 degrees for resins, and 61.1 degrees to 2.8 degrees for coat-ing).The tensile strength of the resins decreased during aging, and the relative elongation at break after reaching the minimum was increased (at the irradiation time of 100 h). In the case of coating, both the tensile strength and elongation decreased during aging and, after reaching the minimum they in-creased (at the irradiation time of 800 h), reaching the maximum (at the irradiation time of 1000 h), and then decreased.

引用

页码：433 / 442

页数：10

共 12 条

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