AFCONA Products for floor coating. Version : Jan 2010

Transcription

1 AFCONA Products for floor coating Version : Jan 2010

2 Systems introduction 1) Solvent free 2 pack epoxy 2) Solvent free Polyurethane 3) PMMA acrylic system

3 Main properties requirement - Foaming avoid foam stabilizing additives especially a levelling agent that stabilized foam. - Color evenness select a suitable dispersant - Good substrate wetting use a fluorocarbon modified polyacrylic as levelling agent - Good leveling use a good combination of silicone and non-silicone levelling agent - No viscosity pick up Avoid using high amine value materials, mainly coming from the dispersants

4 Foaming General rules : Low surface tension + Compatibility = Foam stabilizing - the lowest the surface tension, more foam will be created, thus avoid. Low surface tension + incompatible = not a foam stabilizer - possible a good defoamer but at least it will not stabilized foam.

5 Defoamer Additives and foam stabilizing Based on incompatible, give defoaming property. Leveling agent Most leveling agents are foam stabilizer as they reduce surface tension and gives compatibility. However special modified leveling that crater for foam sensitive system are available from AFCONA where it can perform leveling, slip, anti-crater as well as defoaming. Dispersing agent Dispersing agent must be compatible in order it can function as dispersing agent. Thus we can not avoid foam stabilizing contribution of dispersing agent to the system. However as dispersing agent does not reduce surface tension too low as silicone, thus the foam stabilizing i effect is possible to solve by a suitable defoamer.

6 AFCONA Defoamers Solventless Epoxy Solventless Polyurethane Transparent clearcoat AFCONA 2720 or % 0.5% AFCONA 2723 on total or formulation AFCONA 2038 AFCONA 2038 or AFCONA 2045 PMMA system AFCONA on total formulation Dosage Coloured /pigmented Dosage AFCONA 2722 or AFCONA 2725 or AFCONA 2726 or AFCONA % on total formulation % on total AFCONA 2020 or AFCONA % on total formulation or formulation AFCONA % % AFCONA 2725 on total formulation Remark : The choice of defoamers for epoxy are more due to different hardener availability in the market. For better performance, combination of AFCONA 2040 or AFCONA 2038 at % will increase the defoaming performance.

7 AFCONA Defoamers Resin System : 2 pack solventless epoxy : Transparent Clearcoat AFCONA 2720 Polyhydrocarbon based defoamer. Gives good transparency. AFCONA 2723 Better transparency than AFCONA Silicone based. AFCONA 2038 Very good transparency but also strong in defoaming. Silicone based. Highly recommended. If deforming is not enough, combine with small portion of AFCONA

8 AFCONA Defoamers Resin System : 2 pack solventless epoxy : Coloured / pigmented AFCONA 2722 Combination of Polysiloxane and low polar polymers defoamer. Strong defoamer. AFCONA 2725 A non silicone based defoamer with 100% active ingredient as defoamer. A strong defoamer. AFCONA 2722 and AFCONA 2725 perform differently in different hardener. AFCONA 2726 Very high concentration of Polysiloxane and polyhydrocarbon based defoamer. Very effective and also provide good leveling. AFCONA New defoamer based on polyether alkyl modification. Very strong defoaming property with leveling performance.

9 AFCONA Defoamers Resin System : 2 pack solventless polyurethane : Transparent Clearcoat AFCONA 2045 Silicone based defoamer. Gives good transparency. AFCONA 2038 Silicone defoamer, give very transparent but not so strong in defoaming as AFCONA , high dosage needed.

10 AFCONA Defoamers Resin System : 2 pack solventless Polyurethane : Coloured / pigmented AFCONA 2722 Combination of Polysiloxane and low polar polymers defoamer. Strong defoamer. AFCONA 2725 A non silicone based defoamer with 100% active ingredient as defoamer. A strong defoamer. AFCONA 2020 Cheap and efficient defoamer. More sensitive to give craters..

11 AFCONA Defoamers Resin System : PMMA system : Transparent Clearcoat AFCONA 2040 A fluorocarbon silicone defoamer, very compatible yet effective as defoamer in high polar system such as PMMA.. Resin System : PMMA system : Coloured / pigmented AFCONA 2725 A very strong defoamer for PMMA system. Based on a very low polar polymer..

12 AFCONA leveling agents silicone based 2 pack solventless epoxy/polyurethane/pmma y systems Silicone based Products Defoaming Anti-crater t levelingli slip Dosage AFCONA 3236 AFCONA 3238 average Very good Excellent good % Excellent Good Good good % AFCONA - Very good Good Excellent Average % 3239

13 AFCONA leveling agents silicone based Chemical structure t of recommended d AFCONA polysiloxane CH 3 CH 3 (H 3 C) 3 Si O Si O Si O Si(CH 3 ) 3 n CH 3 m

14 AFCONA leveling agents AFCONA leveling agents non-silicone based 2 pack solventless epoxy/polyurethane/pmma y systems Non-silicone based Products Defoaming Anti-crater leveling Substrate Dosage wetting AFCONA Foam excellent Excellent excellent % 3700 stabilizing AFCONA 3770 AFCONA 3775 AFCONA Very good Very good Excellent Very good % Excellent Average Excellent Average % Good Very good Excellent Very good %

15 Combination used of AFCONA leveling agents Combination of silicone and non-silicone leveling agent Me Me Me Me Me Me Me Me Me Me O O Si Si Si Si Si O O O O O O O Wet paint film O CH 2 CH 2 CH CH CH 2 CH O C O C O O O CH 2 CH CF 2 2 H 2 C H 2 C CF 2 CH 2 CH 3 CF 2 H 3 C CF m n p 3 Silicone and non silicone leveling agent orientated themselves on different interface as show above. This will improve system performance of anti-crater, levelling and substrate wetting properties. Thus we recommended to formulate with a combination of AFCONA silicone and AFCONA non silicone leveling agents.

16 AFCONA Additive-Dispersing agent Manufacturing of colored paint involved grinding of pigments. This is the major task for the whole manufacturing process. In floor coating, current grinding methods are : - Separate grinding This grinding method involved separately preparation of individually ypg pigment paste which is grinded separately. Final colors are made from mixing again these pigment pastes in different ratio. - Co-grinding This is a more common method in this paint system. This method are referring to grinding all the pigments in the formulation at once. All pigment are mix together with other mill based formulation ingredients and grind together.

17 AFCONA Additive-Dispersing agent Co-grinding Method (Epoxy and Polyurethane) AFCONA 5066 Low foam stabilizing conventional wetting and dispersing i agent. Based on polyacidic functional group as anchoring agent. Dosage : % based on total formulation AFCONA 4017 Polyurethane based polymeric dispersant specially for co-grinding. Contain amines and acids anchoring groups where amines are have more affinity to organic pigments and acid s are more for inorganic pigments. Dosage : 1.0% based on total formulation

18 AFCONA Additive-Dispersing agent Test r result with AFCONA 4017

19 Through concentrate : AFCONA Additive-Dispersing agent AFCONA dispersing agents Single grinding Method (Epoxy) AFCONA 4080 Very good in pigment stability. Low Amine value where it can give better viscosity stability upon storage. AFCONA 4010 For all inorganic pigments / fillers Full let down : AFCONA 4048 The best performance AFCONA 4050 For economy reason AFCONA 4010 For all inorganic pigments / fillers

20 AFCONA Additive-Dispersing agent AFCONA dispersing agents Single grinding Method (Polyurethane) AFCONA 4047 The best performance with good viscosity reduction. AFCONA 4201 This product is an excellent choice if formulator want to keep it totally solvent free. 100% active ingredient.

21 AFCONA Additive-Dispersing agent AFCONA dispersing agents Recommended dosage: Inorganic pigments Organic pigments: Carbon black pigments: pg 10% of Oil Absorption value Or, 2-4% on pigment blue, green, violet: 25% of BET value Or, 20-30% on Pigment yellow, orange, Red: 50% of BET value Or, on pigment 20% of DBP Oil Absorption value Or, 20-50% on Pigments