BL Interface & Performance Additives for Paper Impregnation

Transcription

1 BL Interface & Performance Additives for Paper Impregnation Technical Service Plastic Industries

2 Paper Impregnation Process Needs Additives Wetting agent Dispersant Defoamer Antidust Resin Bath Unwind Dip coating Drying Rewind Seite 2

3 Wetting Agents for Paper Impregnation TEGO Surten W 111 Alcohol alkoxylate 100% active No foaming Enhanced penetration into the paper Nonylphenol ethoxylate-free TEGOPREN 5878 Organomodified siloxane 100% active Low foaming Enhanced penetration into the paper Nonylphenol ethoxylate-free Seite 3

4 Test Method / Wetting Behaviour of Aminoresins on Paper Draw down direction For each test two stripes are cut from one sheet of paper. For the measurement always a control without additive and one with the wetting agent is measured to acertain comparable results. A drop with a defined volume is put on the paper and at once drawn down with our draw down machine. Then the length and width of the resin film is measured and noted down as difference compared to the control in % shorter (length) and % broader (width). Seite 4

5 Test Setup & Performance of Wetting Agents Determination of film length The shorter the film the faster does the resin penetrate into the paper Determination of film width The broader the film the better the penetration into the paper 1. ontrol without additive (powder resin + hardener) 2. ompetitor, Octylphenolethoxylate 3. TEGO Surten W TEGOPREN 5878 Seite 5

6 OMS are 10 Times as Effective as Standard Wetting Agents 14 low 12 competitor TEGOPREN 5878 Film length [cm] Performance 2 0 high 0 0,05 0,1 0,2 0,3 0,4 0,5 oncentration [%] Seite 6

7 Where are Antifoams used? In Melaminic resins for impregnation of decor paper and overlays In Phenolic resins for impregnation of Kraft paper Seite 7

8 Antifoam for Impregnation of Decor Papers and Overlays TEGO Antifoam 2360 Excellent antifoaming properties Especially designed for sensitive surfaces like Melamine or Polyurethane No surface defects Transparent films Easy to handle emulsion Seite 8

9 Stirring Test for Foaming Behavior of Resin Formulations age Stirrer: Diameter: 2 cm Height: 2 cm How to run the test ml resin + defoamer is poured into a 250 ml beaker 2. Stirring for 1 minute at 2500 rpm 3. Resin is poured into a 50 ml calibration flask 4. Weight is determined Interpretation High weight = few entrained air = good defoamer performance Low weight = much entrained air = poor defoamer performance The amount of air can be calculated by using the following formula: Volume of air % = 100 (g*2)/d g = weight of 50 ml stirred resin D = density of the air free resin The stirrer must be completely covered with resin. Seite 9

10 Antifoams / Results Stirring Test Melaminic Resin + 0.2% Antifoam 20 low entrained air (Vol.-%) ontrol om petitor TEGO Antifoam 2360 Performance high Seite 10

11 Antifoam for Phenolic Resins in the Impregnation of Kraft Paper TEGO Antifoam 2290 High efficient antifoam Based on paraffinic oil and is completely silicone free Very compatible Selfemulsifiable antifoam concentrate Easy to use Seite 11

12 Antifoams / Results Stirring Test Phenolic Resin % Antifoam entrained air [Vol%] low Performance high 0 Without antifoam competitor antifoam TEGO Antifoam 2290 Seite 12

13 200 µm Films of Phenolic Resin on Glass Without Antifoam ompetitor Antifoam TEGO Antifoam 2290 Antifoam dosage = 0,05 w% Seite 13

14 TEGOMER Dispersing Agents In the production of single-colored surfaces the pigments may be dispersed in the resin bath. Mainly this is done in the production of white surfaces by dispersing TiO2 in the resin. If the dispersion is not good enough, separation of the pigment will occure. These separations often build up hard layers in the resin bath and are not easy to remove. Without TEGOMER DA Seite 14

15 TEGOMER Dispersing Agents By adding TEGOMER dispersing agents separations are avoided. No hard layers are build up and cleaning of the impregnation bath is getting easier. With TEGOMER DA Seite 15

16 TEGOMER Dispersing Agents TEGOMER DA 640 Polyether phosphate Anionic 30% active content in water Solvent and Nonylphenol ethoxylate-free c TEGOMER DA 850 Organic modified polymer Nonionic 40% active content in water Solvent and nonylphenol ethoxylate-free Seite 16

17 Additives for Paper Impregnation Wetting Agents TEGOPREN 5878 TEGO Surten W 111 Defoamer TEGO Antifoam 2360 for melaminic resins TEGO Antifoam 2290 for Phenolic resins Dispersing Agents TEGOMER DA 640 TEGOMER DA 850 Seite 17

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