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Mar 1, 2016
Product Name: Thermoplastic HighTemperature Polyimide Coating
High Temperature Polyimide coating SolverPI-Coating1001 is a polymer coating with high temperature resistant,stable chemical properties and excellent dielectric properties.Due to itsexcellent physical and chemical performance,it is often used as a large-scaleintegrated circuit wiring layer insulation, metal surface coating, surfacepassivation layer, shielding material, ion implantation and so on.It is widelyused in chemical industry, navigation, aerospace, aviation, andmicroelectronics field.It has characteristics of high temperature resistant,low temperature resistant, resistant to radiation, chemical corrosionresistance, low moisture absorption rate, hydrolysis resistance, excellentinsulation performance and good oxidation stability, fire preventionnoncombustible, non-toxic, environmental protection, good adhesion,flexibility, high hardness, impact resistance, and exquisite, scour resistanceof paint film burnish and so on.
Usage: Apply to the metal which is difficult to attach (stainlesssteel, aluminum, copper, titanium coating on magnesium alloy, chromium plating)
Performance indicators:
Terms | Guideposts |
Appearance | yellowish-brown |
Solid content％ | 25 |
Density（g/cm³） | 1.29g/cm3-1.60g/cm3 |
Viscosity(mPa.s) | 945-1500 |
Dilatation coefficient（23-200℃），（10﹣5㎝/℃） | 3.5-5.5 |
Friction coefficient（PV=0.33MPa·m/s） | 0.01-0.02 |
Wear volume(mm3/cn.m) | 1.0-3.0 |
Dielectric constant(1KHz) | 3.0-3.5 |
Surface resistance(Ω) | 1015-1016 |
Volume resistance（Ω·m） | 109-1014 |
Applicable temperature | -260-400 |
Thermal decomposition | ≥580 |
Salt spray resistance | ≥1500000 |
Adhesion | ≥80 |
Acid-resistance | Resistant to hydrochloric acid, thin sulfuric acid, hydrofluoric acid, etc |
Aalkali resistance | The cold resistance of low concentration of alkali liquor |
Aging resistance | ≥1500000 |
Other items | Resistance to organic solvents and various oils |
The construction technology:
1. The application of technology: the paint brush or stir well after spraying,roller coating methods such as coating on metal substrate surface, the coatingthickness can be determined according to the actual needs(coating can beaccording to the actual situation, using formamide solvent dilution, dilutionafter coating must mix in construction)After drying for about 20 minutes, thecoating of the base material in hot blast stove at 80 ℃/h,120℃/h、160℃/h、280℃/h temperature programmed for curing, control theheating rate of 2 ℃ / min, allow it to cool to room temperature naturally aftercuring, unsealing coating need to be finished within a week.
2. Basal request: metal surface must be polished, or affect the bondingstrength, to deal with the old metal surface clean. Coated metal surface shouldkeep dry, clean, strong and smooth, construction temperature is 10 ℃ to 35 ℃.
3. Note: During construction,Polyimide coating should avoid damp, avoid dustand can not be used with other solvents, paint, construction site should bewell-ventilated. Coating which have been opeded need to be finished as soon aspossible, unopened coating long-term preservation below 15 ℃, notemoistureproof, keep ventilated. Avoid contact with the skin for a long periodof time, when using solvent does not contain toxic, flammable, volatile organicsubstances, when can be carried out in accordance with the general method ofpaint.
UV Curing process
Method 1: Spray surface under uv light at a distance of200 mm below, about 30 min, vertical irradiation in principle is coatingsurface is not glue the hand, namely the curing is complete. If the coatingsurface is bigger, it must move in curing process of uv lamp or spraying thesurface.
Method 2: First put the coating surface under uv lamp ata distance of 300 mm for vertical irradiation about 10 minutes, then sprayingthe surface under uv lamp at a distance of 200 mm for vertical irradiationabout 10 min, and then again put coating on the surface of uv light at adistance of 100 mm for vertical irradiation about 10 minutes,.In principle,whenspraying the surface is not glue the hand,it is namely complete curing.Similarly, if the coating surface is bigger, it must move in curing process ofuv lamp or spray the surface.
(note: this method is a reference for power 2 kw uv lamp,in the actual process can be adjusted according to the size of the uv lamppower proper uv lamp and the distance between the coating surface, andirradiation time.)