Kinte Materials Science and Technology Co.,Ltd
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Outstanding Chemical Resistance, ISO90001 Grey Matte Wheel Powder Coating
◎Introduction
Powder coatings have been used in the automotive field since the early 1970s. With the rapid growth of cars in recent years, powder coatings for aluminum wheels have developed rapidly.
As far as the current market application of aluminum wheel powder coatings is mainly wheel base powder and cover light-transmitting powder. The wheel base powder is mainly epoxy type, epoxy-polyester mixed type, pure polyester type, etc. The base powder is mainly divided into high gloss, flat and matte in terms of gloss.
The first is to improve its corrosion resistance and prolong its service life by coating the base powder on the aluminum wheel hub, and the second is to improve its appearance and decoration.
The wheel base powder coating developed by KINTE has high leveling and good breathability. It is suitable for curing at 180°C, which can greatly reduce the energy consumption and production cost of manufacturers. This product has good physical properties and chemical resistance and can meet the requirements of various wheel manufacturers for high leveling, low baking temperature, good chemical resistance, and excellent physical properties.
◎Advantages
Excellent leveling effect
Excellent crushed stone impact resistance
Good surface strength, excellent scratch resistance
Strong adhesion, excellent resistance to salt spray and aging
◎Application Field
A range of automotive wheel hubs for different requirements and coating characteristics
◎Properties Index
| Properties | Test Method | Test Result |
| Color | Eyeballing | Grey |
| Appearance | Eyeballing | Smooth and flat |
| Gloss | GB/T 9754-2007 | 15-25 (60°) |
| Adhesion | GB/T 9286-1998 | Grade 0 |
| Hardness | GB/T 6739-2006 | H (Pencil Hardness) |
| Impact Resistance | GB/T 1732-1993 | 50Kg·cm |
| Flexibility | GB/T 1731-1993 | 2mm |
| CASS | GB/T 10125 | 240 hours pass |
| Water Resistant | GB/T 1733-1993 | 240 hours pass |
| Salt Spray | GB/T 1771-2007 | 1000 hours pass |
◎Spray Process Parameters
Spraying Craft: Electrostatic Spraying Method
Spraying Voltage: 50-80Kv
Humidity of Spraying Work Environment: ≤ 85%
Spraying Working Environment Temperature: 0°C - 35°C
Powder Supply Air Pressure: 0.2~0.4MPa
Atomizing Air Pressure: 0.01~0.1MPa
Distance between Workpiece and Nozzle: 20~30cm
Recommended Baking Conditions: 180°C/8-15min (Actual temperature of workpiece)
Volatile Organic Compounds: Basically zero
Density: 1.2-1.7 g/cc
Theoretical Coating Area: 9-12m2/Kg
Dust Explosion Safety: Ignition point 470°C, explosion limit: 20~30 g/m3
◎Transportation and Storage
Carton packaging, lined with two layers of PVC plastic bags, net weight 20 or 25kg.
Non-dangerous goods, with no special transportation requirements, can be transported in various ways.
Avoid direct sunlight, moisture, and heat, and avoid contact with chemicals.
Can be stored in a cool, dry place below 28°C for 6 months.
◎Health and Safety
All raw materials of powder coatings do not contain toxic substances, and no toxic gas is produced during baking, but inhalation of dust should be avoided during use. Operators should wear dust masks and minimize long-term contact between skin and powder coatings. The paint attached to the skin can be washed with soap.
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