low temperature curing powder coating

2016/10/18 10:32:53

In order to verify the feasibility of the application of low temperature powder in aluminum 


hub, this paper selects the low temperature curing powder coating and powder coating are 


compared firstly, low temperature curing of low temperature powder mechanism analysis; 


second determination of the characteristics of two kinds of baking powder and baking curve; 


third for the mechanical properties testing of the wheel after spraying (yield strength and 


reliability test (Experiment) and film adhesion, gravel impact, water resistance, salt 


spray test and balance test; at the end of the block paste) low temperature process applied 


in aluminum wheel production promotion make analysis and evaluation.

Powder coating in the 


whole coating technology is a rapid development of the field, because of its VOC emission 


is almost zero, the current background of green development of environmental protection is 


more driven by its rapid development. Powder coating have been used in the automotive 


wheel hub, the environmental protection of the construction and excellent coating 


properties to promote the rapid development of the automotive parts industry in recent 


years.

But the ordinary curing conditions of powder coating in more than 180 degrees 


Celsius, and some even as high as 200 DEG C, 25min, has high curing temperature and long 


time lead to shortcomings in the practical application of high energy consumption, high 


curing temperature and can lead to brittle parts. Car wheels for the main load-bearing 


components of the car, not only requires sufficient mechanical strength, but also requires 


sufficient toughness to ensure the impact resistance. Reducing the curing temperature of 


powder coating can increase the toughness of the wheel hub, reduce the production energy 


consumption and achieve the goal of energy saving and environmental protection.

At present, 


the low temperature curing powder has large quantities of energy saving and environmental 


protection in the field of home appliances, effectively reducing the energy consumption, 


but the traditional low temperature curing powder, leveling is poor, and the painting flat 


aluminum wheels and the appearance of the convection are higher, and therefore can not 


spray coating on aluminum hub, so in the industry of automotive aluminum low temperature 


curing powder, there is no use in large quantities, so if the aluminum wheel industry can 


adopt low temperature curing powder, there will be much room for improvement in energy 


saving and environmental protection.

Low temperature powder coating application in 


automobile hub application, the premise is the production of low temperature powder 


technology hub products to meet the current automotive performance standards, based on 


powder manufacturers of aluminum wheels for the performance test of low temperature powder 


(corrosion resistance DSC, DSC, IR, powder coating compatibility, particle size the 


experiment, resin content, impact resistance) on the basis of gravel for aluminum wheel 


special low temperature curing powder Guangzhou Qingtian powder first developed, through 


mechanical properties, low temperature powder coating on the aluminum wheel hub 


construction process, the coating film properties and coating paste performance balance 


block and a series of standard test on the application of low temperature curing powder in 


aluminum wheel industry made a series of feasibility study.


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