Product Overview
Polyimide composite powder coating is a kind of polyimide ultrafine resin powder as the matrix, which is compounded by adding various additives such as dispersant and leveling agent. It is a solvent-free, 100 % is a new type of solid powder coating. This product exists in the form of fine dry powder and is suitable for electrostatic spraying processes. It is solvent-free and pollution-free. After spraying is completed, part of the powder can be recycled, saving energy and resources. The polyimide used in this product is a special engineering resin with excellent performance. It has excellent chemical stability, high temperature resistance, wear resistance, corrosion resistance, excellent weather resistance, and excellent dielectric properties. Due to its excellent physical and chemical properties, it is often used as metal anti-corrosion layer, chemical storage tank coating, chemical pipeline coating, oil transportation pipeline coating, corrosion-resistant coating of electrical components, microwave shielding coating, integrated circuit insulation layer, Seawater and salt spray-resistant coatings for ships, anti-corrosion coatings for port equipment, and weather-resistant coatings are widely used in chemical industry, aerospace, navigation and other fields.
Product usage
It is suitable for spraying metals with high adhesion requirements, such as profile products made of stainless steel, aluminum, copper, alloy materials, etc. For special working conditions and harsh usage conditions, this product can be specially customized according to customer requirements.
Product testing and performance indicators
| Test items | Control indicators |
| Paint appearance | The paint surface is smooth and flat, with no color difference |
| Powder material bulk density (g/cm³) |
0.34～0.49 |
| Volume average particle size of powder material (μm) |
≤100 |
| Friction coefficient of paint surface (Mpa.m/s) |
≤0.57 |
| Paint surface volume wear rate (mm3/cn.m) |
≤0.0045 |
| Paint adhesion (crosshatch method) (adopting GB/T 9286-1998) | ≤Level 1 (the cutting edge is completely smooth and no frame is peeled off) |
| Impact resistance of paint surface (falling weight impact method) (adopting GB/T 1732-2020) | ≥1Kg.80cm (no cracks, wrinkles or peeling observed) |
| Long-term use temperature (℃) |
≤185 |
| Paint surface hardness (pencil hardness method) (GB/T 6739-2006) |
≥4H |
| Acid resistance of paint surface | Resistant to hydrochloric acid, dilute sulfuric acid, hydrofluoric acid, etc. |
| Paint surface alkali resistance | Resistant to low concentration cold lye |
| Paint solvent resistance | Resistant to organic solvents |
Note: In order to meet the usage requirements of different customers, we will tailor powder coating formulas for customers based on different usage conditions. The color of the customized formula and the above properties will be different.
Product usage examples
Polyimide composite powder coating spraying effect
Main features
1. Physical and chemical properties: excellent coating toughness; excellent bending resistance: excellent coating film adhesion; smooth and delicate paint surface; low moisture absorption rate of coating; good erosion resistance.
2. Heat resistance: long-term use temperature can reach 185°C; intermittent high use temperature allowed is 240°C.
3. Flame retardant performance: excellent natural flame retardancy; no dripping after burning.
4. Chemical stability: good hydrolytic stability; good corrosion resistance to a variety of chemical substances, such as gasoline fluids, fully halogenated hydrocarbons, alcohol and aqueous solutions.
5. It has excellent weather resistance. When exposed to the outdoor environment for a long time, the coating is not prone to a series of aging phenomena such as cracking, powdering and strength reduction.
6. Radiation resistance: It has good resistance to ultraviolet rays and Y-rays.
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