Reference number : GC-2017-Q3-00621, amendment number : , agreement type : G, recipient legal name : Nazemifard, Neda (University of Alberta), recipient country : CA, recipient province : nan, recipient city : Alberta, recipient postal code : nan, program name english : Engage Grants for universities, program name french : Subventions d'engagement partenarial pour les universités, program purpose english : Traditionally, formaldehyde based resins were used for manufacturing of engineered wood products (EWP)_x000D_
however the industry is shifting to the use of polymeric diphenylmethane diisocyanate (pMDI) binding resins._x000D_
This shift is due to both the safety concerns with the use of formaldehyde, but also due to the significant_x000D_
advantages with the use of pMDI including: reduced concentration and cost; fast curing; increased panel_x000D_
performance through the formation of strong chemical bonds; increased strength and water resistance._x000D_
However, there is a drawback limiting the use of pMDI due to its superior adhesive properties which requires_x000D_
the application of effective release agents (RA). RA prevents the sticking of the produced boards to the press_x000D_
plates/belts resulting in downtime, costly cleaning and production losses. Guardian has previously developed a_x000D_
series of Pressguard RA for pMDI bonded composite wood products which are protected by patents. While_x000D_
successful, recent industry trends such as increased press temperatures as well as competitive market pressure_x000D_
requires that we renew our research efforts in this field to regain lost market share and address the changing_x000D_
press operating conditions. Development of efficient RA requires in depth understanding of their physical_x000D_
properties and wetting/adhesive interactions with the involved solid substrates, including stainless/mild steel_x000D_
and wood strands. The main objective of this joint project is to use microfluidic channels along with real-time_x000D_
high resolution microscopy to identify and measure the key physical properties that govern the adhesion/release_x000D_
between hot metal plate and composite wood panels manufactured with pMDI resins. The experimental scheme_x000D_
includes determination of dynamic surface tension, dynamic contact angles of pMDI resins, water, silicone oil_x000D_
and proprietary release agent (RA) blends. Microfluidic channels will be designed and fabricated in an attempt_x000D_
to act as micromodels to mimic the absorption of liquids in the wood porous structure. Different coating agents_x000D_
will be used to change hydrophilicity/hydrophobicity of the channels to systematically study the effects of_x000D_
substrate wettability on dynamic contact angle and capillary flow., program purpose french : Traditionally, formaldehyde based resins were used for manufacturing of engineered wood products (EWP)_x000D_
however the industry is shifting to the use of polymeric diphenylmethane diisocyanate (pMDI) binding resins._x000D_
This shift is due to both the safety concerns with the use of formaldehyde, but also due to the significant_x000D_
advantages with the use of pMDI including: reduced concentration and cost; fast curing; increased panel_x000D_
performance through the formation of strong chemical bonds; increased strength and water resistance._x000D_
However, there is a drawback limiting the use of pMDI due to its superior adhesive properties which requires_x000D_
the application of effective release agents (RA). RA prevents the sticking of the produced boards to the press_x000D_
plates/belts resulting in downtime, costly cleaning and production losses. Guardian has previously developed a_x000D_
series of Pressguard RA for pMDI bonded composite wood products which are protected by patents. While_x000D_
successful, recent industry trends such as increased press temperatures as well as competitive market pressure_x000D_
requires that we renew our research efforts in this field to regain lost market share and address the changing_x000D_
press operating conditions. Development of efficient RA requires in depth understanding of their physical_x000D_
properties and wetting/adhesive interactions with the involved solid substrates, including stainless/mild steel_x000D_
and wood strands. The main objective of this joint project is to use microfluidic channels along with real-time_x000D_
high resolution microscopy to identify and measure the key physical properties that govern the adhesion/release_x000D_
between hot metal plate and composite wood panels manufactured with pMDI resins. The experimental scheme_x000D_
includes determination of dynamic surface tension, dynamic contact angles of pMDI resins, water, silicone oil_x000D_
and proprietary release agent (RA) blends. Microfluidic channels will be designed and fabricated in an attempt_x000D_
to act as micromodels to mimic the absorption of liquids in the wood porous structure. Different coating agents_x000D_
will be used to change hydrophilicity/hydrophobicity of the channels to systematically study the effects of_x000D_
substrate wettability on dynamic contact angle and capillary flow., agreement title english : Microfliuidics to measure wetting properties of untreated/chemically treated steel and wood strands substrates, agreement title french : Microfliuidics to measure wetting properties of untreated/chemically treated steel and wood strands substrates, agreement number : EGP, agreement value : 25000.0, agreement start date : 2017-10-18, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada