US20080016819A1 - Nano-composite door facings, and related door assemblies and methods - Google Patents

Nano-composite door facings, and related door assemblies and methods Download PDF

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Publication number
US20080016819A1
US20080016819A1 US11/878,164 US87816407A US2008016819A1 US 20080016819 A1 US20080016819 A1 US 20080016819A1 US 87816407 A US87816407 A US 87816407A US 2008016819 A1 US2008016819 A1 US 2008016819A1
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Prior art keywords
door
door skin
skin
polymeric material
door assembly
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US11/878,164
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English (en)
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Liqun Xu
Jim Pfau
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Masonite Corp
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Individual
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Priority to US11/878,164 priority Critical patent/US20080016819A1/en
Assigned to MASONITE CORPORATION reassignment MASONITE CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PFAU, JIM, XU, LIQUN
Publication of US20080016819A1 publication Critical patent/US20080016819A1/en
Abandoned legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/70—Door leaves
    • E06B3/7001—Coverings therefor; Door leaves imitating traditional raised panel doors, e.g. engraved or embossed surfaces, with trim strips applied to the surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/02—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers
    • B29C70/026—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers and with one or more layers of pure plastics material, e.g. foam layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/02—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers
    • B29C70/028—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers and with one or more layers of non-plastics material or non-specified material, e.g. supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/70—Door leaves
    • E06B3/72—Door leaves consisting of frame and panels, e.g. of raised panel type
    • E06B3/78—Door leaves consisting of frame and panels, e.g. of raised panel type with panels of plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/724—Doors

Definitions

  • the present invention is directed to door facings, door assemblies featuring at least one door facing, and methods of making the door facings and door assemblies.
  • Doors are increasingly being manufactured from composite components containing plastic materials.
  • Typical door assemblies comprise a pair of compression molded exterior skins, frequently having wood grain patterns on their outer surfaces.
  • the door skins are mounted on a rectangular frame that separates and supports the skins in spaced relationship to one another.
  • a hollow space between the skins typically is filled with an insulating structure, for example, cardboard, paper, fiberboard, or foam such as polyurethane.
  • Composite door assemblies provide several advantages over natural and steel doors. Composite door assemblies resist rot and corrosion experienced with solid wood and metal doors, respectively. The composite door assemblies also generally are better insulators than solid wood and metal doors. Because of material costs and manufacturing efficiencies, polymer composite door assemblies are considerably less expensive to manufacture than solid wood doors and can be designed to provide a reasonable facsimile of a wood grain door.
  • a typical compression molding process used in manufacturing available molded door-skins involves placing a predetermined weight of sheet molding compound (SMC) charge layers comprising a polymeric material and fiberglass reinforcement on a lower mold half. An upper mold half is then advanced into engagement with the lower mold half to force the SMC material to fill and to conform to the shape of the mold during compression. The mold halves are heated to about 150° C. to facilitate flow and cure the thermosetting reaction. Once solidified, the molded door skins are removed from the mold press. Often, the mold dies have contours and embossing features that imprint depressions, grooves, patterns, texture and the like into the molded door skin. The imprinted features often are configured as one or more square or rectangular depressions simulating the perimeter of one or more simulated panels. Alternatively, the facings may be flush.
  • SMC sheet molding compound
  • sheet molding compounds typically contain a thermosetting resin system such as an unsaturated polyester resin (UPR) and an unsaturated co-curable reactive monomer, such as styrene (St).
  • the sheet molding compounds also contain a reinforcing agent, such as glass fibers, often presented as 1 inch (2.54 cm) or half inch (1.27 cm) chopped fiberglass and/or a thin fiber mat.
  • Additives commonly combined with sheet molding compounds include catalysts, activating agents, thickening agents, stabilizers, and inert fillers such as calcium carbonate, talc, and wood particles.
  • a problem that has been experienced with SMC compositions found in conventional compression molded door skins relates to shrinkage accompanying molding processes.
  • Conventional SMC compositions have been found to undergo a high degree of polymerization shrinkage, estimated at about 7-10% in some cases. Shrinkage can cause severe surface quality and dimensional control problems in manufacturing.
  • Another problem that has been experienced with SMC compositions found in some conventional compression molded door skins relates to their lack of dimensional stability, which may cause the door skins to shrink and expand in response to variations in temperature and humidity experienced with seasonal changes, or when used in combination with a glass storm door.
  • the surface temperature of the door facing behind a storm door may reach temperatures in excess of 82° C. (180° F.) in response to direct sunlight exposure.
  • the surface temperature of a dark painted door behind a full view storm door can reach up to 116° C. (240° F.) in response to direct sunlight exposure.
  • the interior door surface is room temperature and therefore a substantial temperature differential may exist across the thickness of the door. Excessive dimensional instability can cause the door to bow or the door skin to delaminate from the peripheral frame in response to such temperature variations.
  • a door facing adapted for construction of a door assembly is provided.
  • the door facing features a rectangular solid sheet having first and second opposing surfaces.
  • the solid sheet comprises a polymeric material and a nanocomponent.
  • a door assembly featuring a frame and first and second door skins secured to opposite sides of the frame. At least one of the door skins comprising a rectangular solid sheet having interior and exterior surfaces.
  • the solid sheet comprises a polymeric material and a nanocomponent.
  • a third aspect of the invention provides a method of forming a door skin, comprising the steps of providing a die mold having first and second dies defining a cavity, disposing a SMC charge layer comprising a polymeric material and a nanocomponent into the die mold, at least partially closing the die mold, shaping the polymeric material under pressure to establish a door skin, and removing the door skin from the die mold.
  • a fourth aspect of the invention provides a method for making a door assembly.
  • a door skin featuring a rectangular solid sheet having interior and exterior surfaces is attached to a frame.
  • the sheet comprises a polymeric material and a nanocomponent dispersed in the polymeric material.
  • a second door facing having the same or different characteristics is attached to the opposite side of the frame.
  • FIG. 1 is an elevated front view of an embodiment of a two-panel door in accordance with the invention.
  • FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1 .
  • FIG. 1 depicts a door according to an embodiment of the invention generally designated by reference numeral 10 .
  • Door 10 may be an exterior entryway door or an interior passageway door of a building, such as a dwelling or commercial property.
  • the mechanical properties that characterize embodiments of door 10 described herein make it particularly suitable for use as or in combination with a hurricane door.
  • Exterior and passageway doors typically have a height of from about 6 foot, 8 inches to about 9 feet, more usually about 8 feet, and a width of about 3 to 4 feet, with 3 foot 6 inches being standard width for many passageway doors.
  • Other uses of door 10 include furniture (e.g., cabinet, desk) drawers, furniture doors, and closet doors.
  • door 10 may include hardware, such as a handle, knob, or other grasping mechanism, with or without a locking mechanism.
  • Door 10 may further include appropriate mounting hardware for its intended use, such as hinges for mounting door 10 to a wall structure (e.g., a building wall structure) or guide rails for allowing sliding movement of door 10 . While the embodiments described herein relate primarily to doors, it should be understood that the disclosed invention is applicable for other composite decorative panels.
  • Door 10 includes front and rear door skins (also referred to herein and in the art as door facings) 12 and 14 parallel with one another.
  • door skins 12 , 14 may be formulated to comprise the inventive door skin(s) of the present invention.
  • Skin 12 has substantially planar interior and exterior surfaces bounded by perimeters.
  • skin 14 has substantially planar interior and exterior surfaces.
  • Skins 12 , 14 may have smooth or textured exterior surfaces, or a combination thereof. The texture may simulate that of a wood grain or other design.
  • the coloration of skins 12 , 14 is preferably a wood toned color, although any base coloration may be used. Stain, paint, or other dye may be applied to skins 12 , 14 , as may print ink grain designs and the like.
  • an image can be printed on the exterior surfaces of door skins 12 , 14 , as described in U.S. Pat. No. 7,001,016.
  • the aesthetic appearance and tactile feel of skins 12 , 14 may be substantially identical to or different from one another.
  • the exterior surfaces of door skins 12 , 14 optionally may be sealed.
  • a veneer may be bonded to the exterior surfaces to provide a desired appearance (e.g., color, grain and/or inlay patterns of natural wood).
  • door skins 12 , 14 are depicted as simulating multi-panel door surfaces.
  • the illustrated embodiment contains two molded contoured regions 16 , 18 that define and surround two panels 20 , 22 , respectively. A greater or lesser number of panels may be molded.
  • Panels 20 , 22 are preferably coplanar with one another.
  • Each of the contoured regions 16 , 18 is completely surrounded by a substantially planar main surface portion 24 , so that contoured regions 16 , 18 are integral with and interconnect main surface portion 24 with panels 20 , 22 , respectively.
  • panels 20 , 22 lie in the same plane as main surface portion 24 .
  • skins 12 , 14 are shown having identical multi-panel designs, it should be understood that skins 12 , 14 may have different designs from one another and/or may be free of contours and panel-shaped designs.
  • Door skins 12 , 14 are attached to opposite sides of peripheral frame or interior support structure 28 .
  • Mechanical fasteners or bonding adhesives may be used for attachment.
  • a pair of parallel side members known as stiles, establishes opposite side edges of door frame 28 .
  • a pair of parallel end members known as rails, establishes the top and bottom edges of door frame 28 .
  • the frame members can be made of natural wood, man-made pressed wood, or any other suitable material.
  • Door assembly 10 also optionally includes a core component disposed between skins 12 , 14 .
  • Core component may comprise a foam formed of any suitable polymer material which can be injected and formed in place between skins 12 , 14 , or can be pre-formed and then placed between door skins 12 , 14 and surrounded by frame 28 .
  • Other non-foam materials that may be used include, for example, corrugated pads and other insulation and materials.
  • door skins 12 , 14 may be adhered to the core.
  • door assembly 10 may be produced without a core, e.g., to maintain an empty hollow area between skins 12 , 14 .
  • Door skins 12 , 14 may be made of various resins systems and additives compatible with the present invention, including those materials commonly employed in the door-fabrication industry.
  • door skins 12 , 14 are made of a thermosetting resin, preferably a sheet molding compound (SMC) or bulk molding compound (BMC) composition.
  • the thermosetting composition preferably comprises an unsaturated polyester resin and an unsaturated, co-curable crosslinking monomer such as styrene reactive with the polyester.
  • a heat-activated catalyst is included in the composition.
  • thermosetting resin is a polyurethane resin, such as a urethane sheet molding compound, which may comprise, for example, a urethane polymer or prepolymer, a crosslinker and/or linking agent, such as a di- or polyisocyanate, and a catalyst.
  • a polyurethane resin such as a urethane sheet molding compound
  • a crosslinker and/or linking agent such as a di- or polyisocyanate
  • a catalyst such as phenolic resins, vinyl ester resins, and epoxy resins.
  • various olefin homopolymers, copolymers, and terpolymers may also be included, such as polyethylene, polypropylene, polystyrene, acrylonitrile-butadiene-styrene (ABS), acrylate-styrene-acrylonitrile (ASA), and others.
  • the unsaturated polyester resin may comprise a polycondensation reaction product of one or more dihydric alcohols and one or more unsaturated polycarboxylic acids.
  • Nanocomponents that may be selected for use in the compositions and methods of the invention include inorganic clays such as montmorillonite, vermiculite, illite minerals such as ledikite, layered double hydroxides or mixed metal hydroxides, and others.
  • Inorganic clays such as montmorillonite preferably have crystalline layers that are highly anisotropic, often possessing a platelet thickness on the order of about 1 ⁇ to about 50 ⁇ , such as about 10 ⁇ (1 nm). Platelet spacing may be determined using X-ray diffraction.
  • the lateral dimensions of the nanocomponent are not particularly limited, but generally are advantageously within a range of about 30 nm to about 10 micron. Further description of nanocomponents and methods of making the same may be found in U.S. Pat. Nos. 6,849,680 and 5,780,376, incorporated herein by reference.
  • Inorganic clays and certain other nanocomponents are hydrophilic in nature, but can be organically modified to become compatible with the organic polymer matrix.
  • modification involves intercalation of the clay mineral platelets.
  • the platelets may be intercalated by ion exchange using, for example, cations such as ammonium cations (e.g., alkylammonium cations), or reactive organosilane compounds that cause the multi-lamellar or layered particles to delaminate or swell.
  • the ion-exchange technique may involve first “swelling” the clay with water or some other polar solvent, and then treating the clay with the intercalating agent.
  • the function of the intercalating agent is to increase the “d-spacing” between the layers of the inorganic clay.
  • the organophilic clay is then isolated and dried.
  • the nanocomponents alternatively may be treated with a monomer or resin that facilitates intercalation, and an intercalating agent (e.g., quaternary ammonium salt).
  • an intercalating agent e.g., quaternary ammonium salt.
  • monomers and resins for treating the nanocomponents include acrylic monomers, styrene, vinyl monomers, isocyanates, polyamides, polyamines, phenolic resins, polyamide resins, epoxy resins, polyfunctional amines, and unsaturated polyester resins.
  • the intercalating agent may be selected to match the structure of the resin and have functional groups that are reactive with the resin.
  • the amount of intercalating agent may range from 5-50 weight percent of the clay, depending upon the desired properties. Greater proportions of intercalating agent improve clay dispersion, which can improve mechanical properties but also increase viscosity.
  • a discussion of intercalating agents is found in U.S. Pat. No. 6,974,848, which is incorporated herein by reference for its disclosures of inorganic clays, intercalating techniques and intercalating agents.
  • Cloisite® 10 Commercial products containing montmorillonite modified with a quaternary salts include Cloisite® 10, Cloisite® 20, Choisite® 15A, Cloisite® 25A, Clisite® 30B, Cloisite® 93A, and Cloistie® Na + , each of which includes at least one hydrogenated tallow or tallow moiety in the quaternary salt.
  • the Cloisite® products are available through Southern Clay products of Gonzales, Tex., a subsidiary of Rockwood Specialties, Inc.
  • the composition may include additional components, such as low shrinkage and low profile additives, organic initiators (e.g., tertiary-butyl peroxybenzoate), thickening agents (e.g., oxides, hydroxides, and alcolates of magnesium, calcium, aluminum), stabilizers or inhibitors, fillers, reinforcements, and other additives.
  • organic initiators e.g., tertiary-butyl peroxybenzoate
  • thickening agents e.g., oxides, hydroxides, and alcolates of magnesium, calcium, aluminum
  • stabilizers or inhibitors e.g., oxides, hydroxides, and alcolates of magnesium, calcium, aluminum
  • Low profile additives have been defined as relatively polar thermoplastic polymeric materials believed to encourage the formation of microvoids in sheet molding compositions. It is believed that low profile additives are at least partially immiscible with an unsaturated polyester resin system, so that compression molding and setting of sheet molding compositions containing low profile additives is accompanied by the formation of a multi-phasic polymer system.
  • low profile additives include thermoplastic polymers, such as saturated polyesters, polystyrene, polyvinyl acetate, and copolymers and terpolymers of the same. Other low profile additives known in the art may also be included. It is believed that the nanocomponents improve the effectiveness of low profile additives, and may reduce or eliminate the need for low profile additives.
  • Fillers and reinforcements may serve various purposes, including extending the resin, improving mold flow, and/or imparting desired characteristics and mechanical properties to the finished product.
  • fillers include calcium carbonate, clay, graphite, magnesium carbonate, talc, and mica.
  • reinforcements include fiberglass, graphite, aramides, and cellulosic materials, such as wood fibers, sawdust, straw, etc. Fiberglass is often found in many commercial sheet molding compounds, and often is present as 1 inch or half inch chopped fiberglass.
  • the filler and reinforcement materials may take various physical shapes, such as fibrous, microspheres, or one or more mats.
  • Other additives that may be used include, for example, mold release agents, shelf inhibitors, wetting agents, homogenizers, UV retardants, pigments, fire retardants, mold-release agents, and/or thickening agents.
  • the SMC composition may be embodied to constitute, for example, about 15 to about 25 weight percent of the thermosetting resin system, about 10 to about 20 weight percent low profile additive, about 1 to about 5 weight percent nanocomponent, and 13 to about 20 weight percent reinforcement, and about 30 to about 50 weight percent filler, and optionally other ingredients. Concentrations may be adjusted within and outside of these ranges as warranted for obtaining desired properties.
  • An exemplary composition is set forth in the Table below:
  • the resin e.g., unsaturated polyester
  • reactive monomer e.g., styrene
  • low profile additive e.g., low profile additive
  • nanocomponents e.g., the resin (e.g., unsaturated polyester), reactive monomer (e.g., styrene), low profile additive, and nanocomponents
  • Blending may be accomplished, for example, by high speed agitation for about 30 minutes.
  • the fillers, additives, and/or other components are then added to the blend and mixed to form a paste.
  • the SMC paste is combined on an SMC machine with a chopped fiberglass roving (e.g., 1 inch (2.54 cm) or 0.5 inch (1.27 cm)).
  • chopped fiberglass roving e.g., 1 inch (2.54 cm) or 0.5 inch (1.27 cm
  • Other sequences for combining and blending these and other components are contemplated. It is within the scope of the invention to introduce one or more of the composition ingredients to the
  • compression molding comprises introducing the pre-blend and/or unblended components onto a lower die, the moving one or both dies towards the other to form a closed cavity.
  • the dies may possess embossing structures and texture designed to transfer embossments and grain to the molded door, as is known in the art.
  • the components are pressed together between the upper and lower dies and shaped by application of heat and pressure.
  • Sheet molding compounds are often pressed within a temperature range of about 135° C. (275° F.) to about 177° C.
  • the dies exert a pressure on the composition of, for example, about 1000 to about 2000 psi.
  • the pressing operation may last, for example, about 30 seconds to 2 minutes.
  • the polymeric material is softened and caused to flow throughout the mold cavity created by the dies.
  • the polymeric material cures into a set shape. The pressed door skin is then removed from the mold.
  • the addition of nanocomponents can reduce the amount of shrinkage occurring in the SMC composition to provide low or zero shrinkage compositions.
  • the unsaturated polyester (UP) reacts with styrene (St) during cure and separates from the low profile additive (LPA), resulting in a UP-rich phase and an LPA-rich phase.
  • the UP-rich phase experiences volume shrinkage, whereas stress-induced microcracking occurs in the LPA-rich phase or at the interface of the phases to create microvoids to cause a volume increase.
  • the UP-rich phase experiences a much faster reaction rate than the LPA-rich phase.
  • the UP-rich phase shrinks and sets before the LPA-rich phase is able to form microvoids.
  • nanocomponents into the inventive formulation is believed to increase the reaction rate in the LPA-rich phase and earlier onset of critical modulus for microcracking due to the presence of nanocomponent in the LPA-rich phase. Therefore, the nanoncomponents cause earlier microvoid formation and volume expansion, leading to better shrinkage control and improved composite surface quality.
  • the lower or zero shrinkage in turn enhances the composite surface quality and adhesion between the composite surface and paint of the composite.
  • the presence of the nanocomponents and other fillers e.g., calcium carbonate
  • the use of nanocomponents lowers the density of the molded article due to microvoid generation, preferably to a range of about 1.5 to 1.7 g/cm 3 , compared to a density of 1.75 to 1.80 g/cm 3 for a comparable system free of nanocomponents. As a consequence, less material usage and reduced weights are attained.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Special Wing (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
US11/878,164 2006-07-21 2007-07-20 Nano-composite door facings, and related door assemblies and methods Abandoned US20080016819A1 (en)

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US (1) US20080016819A1 (fr)
EP (1) EP2049756A2 (fr)
JP (1) JP2009544870A (fr)
CN (1) CN101505946A (fr)
CA (1) CA2657772A1 (fr)
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080090067A1 (en) * 2006-10-13 2008-04-17 Orlando De La Rosa Manufactured door
WO2012088407A1 (fr) 2010-12-22 2012-06-28 Masonite Corporation Procédé de fabrication de peaux de portes recuites et d'ensembles portes composites, et articles associés
WO2014047559A1 (fr) 2012-09-21 2014-03-27 Masonite Corporation Texture de surface pour objets moulés
WO2014165080A1 (fr) 2013-03-12 2014-10-09 Masonite Corporation Revêtement de porte renforcé, porte renforcée le comprenant, et ses procédés de fabrication

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6226958B1 (en) * 1997-09-02 2001-05-08 Therma-Tru Corporation Insulated door assembly with low thermal deflection
US6487824B1 (en) * 1998-07-16 2002-12-03 Tt Technologies, Inc. Compression molded door assembly
US20030199625A1 (en) * 2002-04-16 2003-10-23 Helena Twardowska Low-density thermosetting sheet molding compounds
US20030226328A1 (en) * 1998-07-16 2003-12-11 Tt Technologies, Inc. Compression molded door assembly
US6841607B2 (en) * 2002-11-05 2005-01-11 Ashland Inc. Thermosetting inorganic clay nanodispersions and their use
US6849680B2 (en) * 2001-03-02 2005-02-01 Southern Clay Products, Inc. Preparation of polymer nanocomposites by dispersion destabilization
US20070191526A1 (en) * 2006-02-15 2007-08-16 Jordan Michael D Ionomeric nanoclay compositions for use in golf balls
US20070212528A1 (en) * 2006-03-09 2007-09-13 Board Of Trustees Of Michigan State University Process for producing polymer multilayers of segregated nanoparticles
US7490445B2 (en) * 2003-06-23 2009-02-17 Ppg Industries Ohio, Inc. Integrated window sash

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3264171B2 (ja) * 1996-03-18 2002-03-11 凸版印刷株式会社 防湿シート、防湿化粧板及びそれを用いたフラッシュドアの製造方法
CA2561137A1 (fr) * 2004-04-21 2005-11-10 Jeld-Wen, Inc. Composites renforces par des fibres et structures de construction comprenant des composites renforces par des fibres

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6226958B1 (en) * 1997-09-02 2001-05-08 Therma-Tru Corporation Insulated door assembly with low thermal deflection
US6487824B1 (en) * 1998-07-16 2002-12-03 Tt Technologies, Inc. Compression molded door assembly
US20030226328A1 (en) * 1998-07-16 2003-12-11 Tt Technologies, Inc. Compression molded door assembly
US6952903B2 (en) * 1998-07-16 2005-10-11 Tt Technologies, Inc. Compression molded door assembly
US6849680B2 (en) * 2001-03-02 2005-02-01 Southern Clay Products, Inc. Preparation of polymer nanocomposites by dispersion destabilization
US20030199625A1 (en) * 2002-04-16 2003-10-23 Helena Twardowska Low-density thermosetting sheet molding compounds
US6841607B2 (en) * 2002-11-05 2005-01-11 Ashland Inc. Thermosetting inorganic clay nanodispersions and their use
US7490445B2 (en) * 2003-06-23 2009-02-17 Ppg Industries Ohio, Inc. Integrated window sash
US20070191526A1 (en) * 2006-02-15 2007-08-16 Jordan Michael D Ionomeric nanoclay compositions for use in golf balls
US20070212528A1 (en) * 2006-03-09 2007-09-13 Board Of Trustees Of Michigan State University Process for producing polymer multilayers of segregated nanoparticles

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080090067A1 (en) * 2006-10-13 2008-04-17 Orlando De La Rosa Manufactured door
WO2012088407A1 (fr) 2010-12-22 2012-06-28 Masonite Corporation Procédé de fabrication de peaux de portes recuites et d'ensembles portes composites, et articles associés
GB2502714A (en) * 2010-12-22 2013-12-04 Masonite Corp Method of making annealed door skins and composite door assemblies, and related articles
US8765046B2 (en) 2010-12-22 2014-07-01 Masonite Corporation Method of making annealed door skins and composite door assemblies, and related articles
US8771581B2 (en) 2010-12-22 2014-07-08 Masonite Corporation Method of making annealed door skins and composite door assemblies, and related articles
US9102808B2 (en) 2010-12-22 2015-08-11 Masonite Corporation Method of making annealed door skins and composite door assemblies, and related articles
GB2502714B (en) * 2010-12-22 2016-08-03 Masonite Corp Method of making annealed door skins and composite door assemblies, and related articles
WO2014047559A1 (fr) 2012-09-21 2014-03-27 Masonite Corporation Texture de surface pour objets moulés
WO2014165080A1 (fr) 2013-03-12 2014-10-09 Masonite Corporation Revêtement de porte renforcé, porte renforcée le comprenant, et ses procédés de fabrication

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WO2008011127A2 (fr) 2008-01-24
JP2009544870A (ja) 2009-12-17
CA2657772A1 (fr) 2008-01-24
EP2049756A2 (fr) 2009-04-22
CN101505946A (zh) 2009-08-12
RU2009106068A (ru) 2010-08-27

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