Coatings and Protection 2019 Issue 7 Summary (II)

Coating Technology
0
1
Development of polyurethane elastic coatings for windscreen capsules outside the high-speed rail vehicle group
Abstract:
uses high-performance hydroxyl polyester resin and homemade SF elastic curing agent as the main film form, with polytekluoroethylene powder as the wear-resistant powder, prepared the high-speed rail vehicle group external windscreen capsules with polyurethane elastic coating. The effects of different hydroxy resins, polycyanate curing agents, NCO/OH substance ratio and wear-resistant powder dosage on coating performance are discussed. The results show that the developed coating has excellent performance of force, wear resistance and environmental reliability, and can meet the protection requirements of windscreen capsules outside the high-speed

.
keywords:
external windscreen; elastic; wear-resistant; polyurethane; PaintZhou Rudong 1,2
, Fu Min 1,2
, Zhu Xiaofeng 1,2
, Zhao Baohua 1, 2
, Zhu Yajun 1, 2
, Li Wenkai 1,2
, Lu Civilization1,2
, Pan Yunfei 1,2
, Zhang Rui
1,2
, Liu Zhiyuan 1,2
, Guo Liang Liang 1,2
(1. CNOOC Changzhou Coatings and Chemical Research Institute Co., Ltd., Changzhou, Jiangsu 213016; 2. CNOOC Changzhou Environmental Protection Coatings Co., Ltd., Changzhou, Jiangsu 213014)
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2
Water-based automotive bumper primer development and performance research
Abstract:
Current domestic adhesion promoter and automotive bumper primer water-based technology is still immature, so this study selected four widely used water-based adhesion promoters in Japan: EA-8, DK-1, DK-2, DK-3. In this experiment, through the performance test of the coatings made by different adhesion promoters, it was found that the water resistance of DK-3 was better than that of the other three additives, combined with the measurement results of adhesion promoter crystallization and contact angle, which showed that high crystallization and low hydrophobic properties improved the water resistance of adhesive promoters. The PVC was then formulated with 35%, 25%, 20% and 15% water-based car bumper primers, respectively, and was eventually formulated with FAW-Volkswagen bumper primer performance indicators (TL211).
keywords:
car bumper primer; adhesion promoter; PVC; water resistanceXu Jie 1
, Wu Huafang 2
, Luo Licheng 1
, Xue Guoming 1
(1. Fudan University, Shanghai 200433; 2. Zhonghai Oil Changzhou Paints Research Institute Co., Ltd., Changzhou, Jiangsu 213016)
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3
on the B1B2 free-to-medium coating process water-based high temperature original paint research
summary:
introduced the main problems and solutions in the B1B2 water-free paint process; The test results and application practice prove that the B1B2 mid-coating-free coating process can be applied to the water-like coating line of the original automobile factory.
key words:
B1B2 process; no medium coating; water-based high temperature original paint; tactile indexLi Baiwen
(Yatu High-new Materials Co., Ltd., Heshan, Guangdong 529700)
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4

Preparation and application of hydrophobic anti-corrosion coatings
Abstract:
After modifying the silicone material by means of modification, and then adding functional nanomaterials with surface modification, a new type of anti-corrosion coating with excellent hydrophobic properties was prepared. The coating has excellent comprehensive properties in the field of metal corrosion protection: static water contact angle of 138.0 degrees, salt spray resistance time of 3,000 h, resistance to artificial accelerated aging time of 1,000 h, excellent adhesion and crack toughness. In addition, the hydrophobic properties of the coating effectively reduce the retention of moisture on the surface of the coating, reduce the possibility of water seeping through the paint film to the substrate, while reducing the corrosive gases soluble in the air, such as SO
2
, H
2
S, etc. dissolved in the water to produce corrosive damage to the paint film, extending the life of the coating. Excellent hydrophobic coating because the rainwater on the coating is difficult to wet, water bead-like roll will take away the dust on the coating surface, to achieve a self-cleaning effect.
Keywords:
Hydrophobic; Weatherproof; Nanomaterials; Anti-corrosion; Self-CleaningYu Bo, Yu Gang, Qian Mingyang, Jiang Yishu, Hui Xiaoning, Zhang Bin
(Hangzhou Ruijiang New Materials Technology Co., Ltd., Hangzhou 310013)
Analysis Test
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5
Study of the influence factors of orange peel of automotive paint
Abstract:
introduces the different evaluation methods of orange peel of lacquer film and discusses the influence factors of orange peel of automotive paint. Through the design of different experiments, the effect of spraying process, spray parameters and coating production process and formulation on the visual appearance of the final paint film is verified, and the spray parameters and coating material improvement are carried out according to the experimental results, and the effect of optimizing the paint film orange peel is finally achieved.
keywords:
car paint; orange peel; leveling;xu amber
(SAIC General Motors Co., Ltd., Shanghai 201206)
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6
motorcycle ABS plastic parts Analysis and Prevention of Poor Paint Absorption
Abstract:
analyzes the causes and factors of poor paint absorption in motorcycle ABS plastic parts, explains the prevention method from the two processes of molding and coating, and shares the experience of preventing paint absorption in injection molding, process, management and so on.
key words:
motorcycle; stress; paint absorption; preventionYu Shiwen, Yan Tao
(Chongqing Construction Yamaha Motorcycle Co., Ltd., Chongqing 400050)
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