How do different adherends stick before surface treatment
Time：2012-11-12 16:16:56 Hits：2367
First, the metal surface treatment;
Typically, the metal surface with an organic solvent or detergent to the oil, and dried. Used propionate barrel, gasoline, anhydrous ethanol, trichlorethylene solvent. Require higher adhesion strength, the metal surface in addition to sand blasting, degreasing, but also for chemical treatment. (For example, brushing (KH-550 coupling agent to 100 parts and 95% ethanol, 20 parts) was added.
1) Copper and Copper Alloys
1 in 42% ferric chloride, 7.5 parts, 15 parts of concentrated nitric acid, 100 parts of water, the preparation of the solution for 1-2 minutes, remove the water rinse, dry.
L9 parts in concentrated sulfuric acid, iron sulfate containing water of crystallization L2 parts, 100 parts of water. Solution formulated ,60-70 ° C for l0 minutes. Remove the water for washing and drying.
Second, the stainless steel
1) in potassium dichromate 7 parts, 7 parts of concentrated sulfuric acid, the solution was formulated in 400 parts of water. 75 ° C and treated for 15-20 minutes. After removing. Brush attached to the carbon residue, rinse with water, 70 ° C hot air drying. High peel strength can be obtained.
2) in concentrated hydrochloric acid l00 parts. 20 parts of 37% formaldehyde, 30% hydrogen peroxide 2-4 parts water 90 parts of the formulated solution, 65 ℃ treated product in 10 minutes, to remove the washed clean, hot air at 70 ° C for drying.
Mild steel, iron and iron-based alloys
Such materials should not be used ketones and other hygroscopic solvent to oil. To prevent rust.
1) in 18% hydrochloric acid for 5-10 minutes, remove the rinse well with water immediately after the 90 ° C hot air drying bonding.
2) in potassium dichromate, 10 parts of concentrated sulfuric acid, 10 parts of the prepared solution in 60 parts of water, at room temperature for 30 minutes, remove and rinse with water, drying.
3) in concentrated sulfuric l parts, industrial alcohol, 2 parts of the formulated solution, 600C for l0 minutes, remove the water rinse, and drying.
Fourth, magnesium and magnesium alloys
1) in 13% aqueous solution of sodium chloride oxidation. 70 ℃ under treatment for 5 minutes, remove the water rinse, and then in l00 parts of chromic anhydride, 28 parts of sodium, and the solution was formulated in 100 parts of water for 5 minutes, remove the water rinse, 40 ° C hot air for one thousand immediately after bonding, can be higher strength.
2) In 20 parts of nitric acid, potassium dichromate, l5 parts. Prepared solution in 65 parts of water, was treated at room temperature for 1 minute. Remove water rinse. Use distilled water, rinse and dry.
, Zinc and zinc alloys
1) in l5% phosphoric acid solution, 65 ℃ under processing for 1-2 minutes, remove the water rinse, dry.
2) in 12% hydrochloric acid solution, for 2-4 minutes, remove the water rinse. Dried at 30 ℃.
, Aluminum and aluminum alloy
1) in potassium dichromate 7.5 parts, 27 parts of water, 27 parts of concentrated sulfuric acid solution was formulated. 60-65 ℃ for 30 minutes. Remove wash with water, 60 ° C hot air drying.
2) in 50 parts of sodium carbonate, 15 parts of potassium chromate, 25 parts of sodium hydroxide, the solution was formulated in 1000 parts of water. 80 ℃ for 25-30 minutes. Remove wash with water, 60 ° C hot air drying.
, Titanium and titanium alloy
60 parts of concentrated sulfuric acid, 60% hydrofluoric acid l0 parts by 200 parts of water, and the solution was formulated in 1000 parts of water, 40 and 45 for 10-15 minutes. Remove water rinse. 70-80 ℃ bake for 15 minutes.
, Tungsten and tungsten alloys
In a 50% solution of sodium hydroxide, 80 under a G0 ° C for l0 minutes. Remove wash with water and hot air drying.
9, chromium
L8% hydrochloric acid, 90 ℃ treated under l0 minutes, to remove a water rinse. The hot wind one thousand.
10, nickel
40 ℃ hot air drying in 60% nitric acid, the process after the wash.
XI beryllium
L0-15% sodium hydroxide solution for 5-10 minutes. Remove water rinse. Dried at 80 ℃.
12, the surface of the plastic handle
Thermosetting plastics and fibers laminated material, in sandblasting or playing hair after degreasing solvent or detergent to dry. A common solvent propoxy 胴, methylethylketone, isopropanol, etc.
1, polyethylene and polypropylene
a. workpiece on the oxidation of the flames, burning to the surface of the transparent, immediately cast the people cold water.
b in dichromate, sodium 5 parts, 8 parts of water, l00 parts of sulfuric acid, the preparation of the solution was processed l.5 hours, remove the water washing, drying.
c in 2% butyl titanate petroleum ether solution applied to the surface, dry to moisture deposition.
2.ABS (styrene acrylonitrile copolymer)
Concentrated sulfuric acid and 26 parts. 3 parts of potassium chromate solution was formulated in 13 parts of water for 20 minutes. Rinse with water after removing the hot air drying.
3 polyamide
4. Polyester (polyethylene terephthalate, ethyl ester)
A. Surface 2.2% titanate, n-butyl ether solution of the oil.
B. polyester fabric may be in a 20% sodium hydroxide solution. At 70 to 95 ° C for 2-10 minutes. Remove wash with water and hot air drying.
C. in a 30% solution of sodium hydroxide, 80 ℃ for 5 minutes. Remove water rinse. Drying. Then in a 50% ferrous chloride solution, at room temperature for 5 minutes points removed was washed with water, dried.
XIII, the surface of the rubber processing
Natural rubber, chloroprene rubber, nitrile rubber and styrene butadiene rubber
A. surface after sandblasting and playing hair to oil, methanol, isopropyl leaven, toluene solvent to dry.
B. In the more than 96% sulfuric acid. Processing 5-10 minutes, the rubber surface SiWen, the remove the water washing, drying.
2 silicone rubber
A. The boric acid l parts. 49 parts of ethanol, 50 parts of a solution prepared of the TEOS. Room temperature for 20 to 30 minutes, bakes out of the box bonding.
B. first organic solvent to the oil, and then cover 5-10% of tert-butyl titanate trichlorethylene solution to dry.
C. coupling agent.
3 Viton
Plastic processing method with fluoride.
XIV. Other non-metallic materials
1 leather
After playing the wool. With propionate barrel oil, allow to dry.
2 synthetic fabrics
Coated with an appropriate surface coating.
Glass and ceramics
A. go with acetone or hot detergent oil, washed clean, drying.
B. dichromate A 6.8, in 66 parts of sulfuric acid. The solution was formulated in 100 parts of water. 70 ℃ Xiachu?? L0 minutes. Remove the water washing, drying.
4, the glass cloth
A, with 300-400 ℃ burning 3-5 minutes.
B. l parts coupling agent and 1 parts of triethanolamine were mixed under stirring at a high speed. Then gradually poured into 100 parts of water. Continuously stirred for 1 hour to obtain an emulsion, preheating of the glass cloth is immersed in the emulsion, after removing at 120-130. C drying.
5 wood
After removing the surface oil, appropriate play hair, and dried to an appropriate degree (containing 10j6 moisture best), beveled possible under the conditions, in order to increase the adhesion area.
