About Us
Wood Coatings & Substrate Conference 2012
5th Wood Coatings and Substrates Conference
When and Where: Thursday & Friday, September 20 & 21, 2012 The University of North Carolina at Greensboro |
Featuring: Industry and Research experts discussing new changes in wood substrates Expert Speakers on coatings science, raw materials, and technology for wood coatings |
Sponsored by: the University of North Carolina at Greensboro |
Keynote Speakers: Thursday: Glass Transition Evolution of Plasticized Latex Films: An Important Process in the Application of Everyday Latex Paints Friday: Effects of Weathering on Wood Surfaces |
Who should attend Wood C&S?
- Chemists and Formulators dedicated to improving wood coating performance and ease of manufacture.
- Raw material and equipment suppliers requiring competency in the wood and wood coatings discipline.
- Students interested in pursuing a career in the coatings, material sciences, and chemical sciences disciplines.
- Educators interested in the wood coatings market and related material science technologies.
- End users who need coatings to add value to their products.
Complete Wood C&S Conference Information:
r.obie@woodcoatingsresearchgroup.com
http://www.uncg.edu
www.piedmontsociety.org
For abstracts, registration information, directions, maps and corporate sponsors contact:
Nada Jovanovich
njovanovich@triad.rr.com
Phone: 336-869-5634
Wood C&S 2012 Program Overview
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Thursday Sept 20, Cone Ballroom-A |
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12:55-1:35 p.m. |
Building an Industrial Wood Finish |
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1:40-2:25 p.m.
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Step Change in Waterborne Thixotropic Paints DSM Coating Resins, Waalwijk. Netherlands |
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2:35-3:20 p.m. |
Self-Crosslinking Acrylic and Acrylic/Polyurethane Resins for Waterborne Wood Finishes |
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3:30 - 4:30 p.m. |
KEYNOTE ADDRESS |
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Friday Sept 21, Cone Ballroom |
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Cone Ballroom-A |
Cone Ballroom-B |
8:00 - 8:45 a.m. |
State of the Industry – Arkema Coating Resins |
Potential Problems Associated with Coating Various Wood Types |
8:55 – 9:40 a.m. |
New light stabilizers for water-borne wood coatings |
Sustainable, Safe, and High Quality UV-cure Powder Coating for Wood Substrates |
9:50 – 10:35 a.m. |
Prevention of Defects in Waterborne Wood Coatings through the Proper Selection of Foam Control Additives |
Curing Behavior and Performance of Site Applied UV Curable Resins for Wood Floor Applications |
10:45 – 11:30 a.m. |
High Performance Water Repellent Acrylic Latices for Exterior Wood Coatings |
Process Temperature Control in Modern Fluid Dispensing Operations |
11:30 a.m.– 12:45 p.m. |
Lunch-Walk to Area Restaurants |
Lunch-Walk to Area Restaurants |
12:55 – 2:00 p.m. |
KEYNOTE ADDRESS |
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Thursday Sept 20, Cone BR-AB
12:55 p.m.
Building an Industrial Wood Finish
Robert M. Cox, Jr.
The wood finish serves as an envelope for the wood substrate; its twofold purpose is to beautify and protect the wooden substrate. The wood finishing process is made up of four interdependent parts: 1. Products, 2. Execution, 3.Environmental Regulations, 4.Quality Control of the Wood Finish.
Wood finishing suppliers formulate, manufacture, and service wood finishing products for manufacturers of wood furniture, kitchen cabinets, office furniture, and multi-purpose cabinets.
They also educate the manufacturer on how to apply and control the wood finish. In order to minimize problems in wood finishing operations, the manufacturer and the finishing supplier must work closely together to be sure that each has a full understanding of all of the factors that impact the quality, durability, cost, and environmental impact of the finished wood product.
[This presentation will assist] in the process of understanding the numerous variables involved in ‘building an industrial wood finish.”
1:40 p.m.
Step Change in Waterborne Thixotropic Paints
J Stubbs
DSM Coating Resins, Waalwijk. Netherlands
The challenge for the modern surface coating industry is to provide coatings with environmental compliancy and sustainable design, most notable being low or zero VOC. This must be achieved simultaneously with high coating performances, matching or preferably exceeding current performance. Towards this goal, we have developed a waterborne paint system exhibiting thixotropic rheology along with excellent wet and dry paint properties. This paper describes the salient design factors, including the synthetic and colloidal features, of this emulsion polymerized acrylic latex with significantly improved rheological and dry coating properties. Comparison is made to solventborne and existing waterborne thixotropic paints. Key properties are reviewed including gel strength and recovery for the wet system, and the enhanced chemical and mechanical properties of the dry coating.
2:35 p.m.
Self-Crosslinking Acrylic and Acrylic/Polyurethane Resins for Waterborne Wood Finishes
Laura Vielhauerl
The Dow Chemical Company, USA
Waterborne wood finishes based on acrylics and other polymer technologies have been increasingly utilized as regulatory pressures push coatings manufacturers and end-users towards coatings with an improved environmental profile. This presentation describes the development of a new self-crosslinking acrylic resin for use in applications such as kitchen cabinets and general wood finishes. A novel ambient crosslinking mechanism leads to faster property development and a non-yellowing finish. This new acrylic resin, when blended with a unique polyurethane dispersion, imparts extremely fast coalescent release and rapid hardness development of the coating.
KEYNOTE ADDRESS
4:30 p.m. Cone Ballroom - A
Glass Transition Evolution of Plasticized Latex Films:
An Important Process in the Application of Everyday Latex Paints
Dr. James Taylor
Principal Scientist
BASF Corporation
Water-borne latex paints are used in everyday life as decorative and as protective coatings. The application of these paints is often taken for granted, but the drying process of latex paints involves the evaporation of water, solvents, and the coalescence of latex particles to a polymeric film that contains pigments, dispersants and surfactants. A model has been developed to better under the drying and coalescence of latex films. The temporary plasticization of latex particles by filming aids and co-solvents is well known. A lowering of the glass-transition (Tg) below the cure temperature is necessary for the interdiffusion of polymer chains between particles. The Tg evolution with time of latex films plasticized with filming aids is modeled using fundamental equations. Both the wet-stage and dry-stage are modeled. Fundamental equations for the wet-film stage contain the evaporation rates, the distribution coefficients of solvents, and wet-stage activity coefficients. The activity coefficients of the solvents during the wet-film evaporation are determined by measuring the minimum filming temperature of the plasticized latex film. Solvent loss is also modeled during the subsequent dry-stage. Activity coefficients of solvent loss from latex films can be determined either gravimetrically or by measuring the Tg evolution of the film as a function of time. The influence of temperature, humidity, and air-speed on drying is also incorporated.
The Tg evolution of latexes formulated with Butyl CARBITOL is studied in detail. During the dry-stage, the hardening of the film initially follows an evaporation controlled model for solvent loss, but then switches to a diffusion model as Tg of the film approaches ambient temperature. Although the Tg evolution of a latex film is complex, it will be shown that the initial Tg suppression produced by a solvent or solvents plays an important role in selecting the optimum solvent or solvent combination for corrosion resistance.
8:00 a.m. Cone Ballroom - A
State of the Industry – Waterborne Deck Stains
Doug Mall
Arkema Coating Resins
Traditionally, deck stains have been one of the remaining holdouts for solvent-borne technology. Recent advances in water-borne technologies and market acceptance of some film-forming finishes are changing what is available today in the market.
We have recently conducted a study surveying some of the top water-borne deck stains currently available, as well as formulated deck stains with several different water-borne resin technologies, and tested them through both accelerated and normal testing protocols. This presentation will present some conclusions based on the results of that study.
8:00 a.m. Cone Ballroom - B
Potential Problems Associated with Coating Various Wood Types
Interior OEM Applications General Overview
James Bohannon
Alberdingk Boley
A variety of woods are used to make interior OEM wood products like furniture, cabinets, floors. Woods vary in hardness, pore structure, moisture content, sanding treatment, natural resin content, etc. Wood is finished with a variety of coatings like solvent borne, waterborne, UV, and hybrids. Depending on selection of wood and coating to be applied, differences in outcome have been observed sometimes identified as a problem. Some of these interactions will be discussed in this talk.
8:55 a.m. Cone Ballroom - A
New light stabilizers for water-borne wood coatings
Dr. Eugene V. Sitzmann
BASF Corporation
The talk will describe exciting new light stabilizer technologies, which can be used to enhance the durability of wood coatings. Examples will be given where the light stabilizers are used in both traditional water-borne as well as UV curable water-borne coating systems.
8:55 a.m. Cone Ballroom - B
Sustainable, Safe, and High Quality UV-cure Powder Coating for Wood Substrates
Ryan Schwarb
Keyland Polymer Ltd.
Consumers and markets are demanding products that are sustainable, lower cost, and higher quality products. UV-cure powder coatings can meet these requirements and provide safer wood coating compared to traditional liquid finishing materials. UV cure powder coatings combine high performance material chemistry, powder application technology, and low energy consuming and high-speed finishing technology of the UV cure technologies. Low process temperatures and UV light initiated cure are ideal for finishing wood composites, reducing substrate thermal exposures and providing higher quality products. This paper presents an overview of UV-cure powder chemistry and application technology and will focus on how combining UV cured powder coating chemistry with design requirements produce products of exceptional value.
9:50 a.m. Cone Ballroom - A
Prevention of Defects in Waterborne Wood Coatings through the Proper Selection of Foam Control Additives
Jeanine M. Snyder
Air Products and Chemicals, Inc
The inclusion of surface active agents in a typical waterborne wood coating formulation generally leads to the tendency to foam during manufacture, mixing and application. If stabilized foam is not minimized in these coatings, the dry films may suffer from surface defects, reducing both the protective and aesthetic qualities of the finished surface. Defoamers are often added to mitigate foam; however, as typical defoamers function via an incompatibility mechanism they may also create additional surface defects such as craters, pinholes and fisheyes. In contrast, the more compatible molecular defoamers often lack the power to effect quick foam knockdown. Thus determining the best defoamer for a given formulation is a matter of finding a balance between the defoaming power or strength of the defoamer and the compatibility and solubility of the defoamer in the system. This presentation will illustrate some of the fundamental causes and effects of foam in waterborne coatings and describe the different mechanisms for defoaming. In addition, the methodology of selecting a defoamer along with specific examples where proper selection of the defoamer enables excellent defoaming and aesthetics in waterborne wood coatings will be discussed.
9:50 a.m. Cone Ballroom - B
Curing Behavior and Performance of Site Applied UV Curable Resins for Wood Floor Applications
Dave Folkman
Alberdingk Boley
On-Site UV Curing is a new technology on the rise primarily used for floor coatings for concrete, wood, vinyl and tile. It offers improved productivity and environmental benefits without compromising the coatings performance. An investigative study has been conducted focusing on the curing behavior and performance of these systems. Factors influencing the extent of the UV curing reaction have been studied using FTIR spectroscopy and a comparison done with chemical and physical testing. The performance was based on testing according to the MFMA (Maple Flooring Manufactures Association) specifications and various field trials. This study also included a comparison of 2 portable UV curing equipment. General learnings and recommendations on this technology will be discussed.
10:45 a.m. Cone Ballroom - A
High Performance Water Repellent Acrylic Latices for Exterior Wood Coatings
F. Decocq, N. Havaux, F. Simal, C. Nootens and D.Vanaken
Momentive Specialty Chemicals
The properties of acrylic latices can be significantly improved by the copolymerization of a hydrophobic monomer such as the vinyl ester of neo-decanoic acid (VE 10). These modified acrylic latices can be designed to meet specific high performing criteria coatings by varying the monomers composition or by using techniques such as cross-linking and core/shell. Substrates such as wood can be strongly affected by climatic variations resulting in many physical changes. High performance coatings are therefore required to cope with these high demands. VE 10 modified acrylic coatings have extremely high hydrophobicity and lower surface energy resulting in outstanding water resistance and water repellency. Recent work on VE 10 modified acrylic latices has led to the development of self cross-linkable core/shell latices that have a good hardness flexibility balance together with excellent adhesion and durability. These emulsion polymers are particularly suitable for the formulating of high performance wood coatings. Ongoing testing of exterior protective wood stains also shows very promising weathering resistance results.
10:45 a.m. Cone Ballroom - B
Process Temperature Control in Modern Fluid Dispensing Operations
(Not your Granddad’s Electric Heater Anymore!)
Mike Bonner
Saint Clair Systems, Inc.
In this presentation we outline the role that temperature plays in modern dispensing operations and how developments in technology have changed the need to address temperature in these systems.
KEYNOTE ADDRESS
12:55 p.m. Cone Ballroom - A
Effects of Weathering on Wood Surfaces
Dr. Christoph Schauwecker
Research Scientist
Viance LLC
The performance of coated and uncoated wood surfaces is directly affected by the interactions of the polymer constituents and the elements. The absorption of UV radiation leading to free radical reactions is the primary force leading to the breakdown of wood polymers when exposed outdoors. Understanding these reactions, and in the future controlling them, will be key to preventing the weathering of wood surfaces. This presentation will present the basic mechanisms associated with the weathering of wood as we understand them today and some approaches, both historical and current, that can be used to prevent surface degradation.
