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This specification covers three types of urea-formaldehyde thermosetting resin adhesives suitable for use on wood, wood-based substrates, or plastic laminates. The requirements for the adhesive are based on tests of physical properties including viscosity, density, nonvolatile content, pH, insoluble matter, amylaceous matter, mixing properties, working life, and on strength properties, including dry shear strength in lumber-type joints, dry and wet shear strength in plywood-type joints, and all strength tests at the end of the storage life certified by the manufacturer. Testing procedures are specified to differentiate between the physical and adhesive bonding properties of the many commercial urea-formaldehyde thermosetting resin and catalyst systems. The adhesive bonding properties are measured on maple block and birch plywood specimens, prepared and tested in accordance with prescribed methods.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.3 The requirements for the adhesive are based on tests of physical properties including viscosity, density, nonvolatile content, pH, insoluble matter, amylaceous matter, mixing properties, working life, and on strength properties, including dry shear strength in lumber-type joints, dry and wet shear strength in plywood-type joints, and all strength tests at the end of the storage life certified by the manufacturer.
1.4 The following safety hazards caveat pertains only to the test method portion, Sections 8 through 11, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B417 Test Method for Apparent Density of Non-Free-Flowing Metal Powders Using the Carney Funnel
D905 Test Method for Strength Properties of Adhesive Bonds in Shear by Compression Loading
D906 Test Method for Strength Properties of Adhesives in Plywood Type Construction in Shear by Tension Loading
D907 Terminology of Adhesives
D1084 Test Methods for Viscosity of Adhesives
D1489 Test Method for Nonvolatile Content of Aqueous Adhesives
D1490 Test Method for Nonvolatile Content of Urea-Formaldehyde Resin Solutions
D1583 Test Method for Hydrogen Ion Concentration of Dry Adhesive Films
D1875 Test Method for Density of Adhesives in Fluid Form
D2556 Test Method for Apparent Viscosity of Adhesives Having Shear-Rate-Dependent Flow Properties
D5266 Practice for Estimating the Percentage of Wood Failure in Adhesive Bonded Joints
E70 Test Method for pH of Aqueous Solutions With the Glass Electrode
E104 Practice for Maintaining Constant Relative Humidity by Means of Aqueous Solutions
Federal SpecificationsPPP-D-729 Drums, Shipping and Storage, Steel, 55-gal (208-L)
Federal StandardFED-STD-123 Marking for Shipment
Military StandardMIL-STD-129 Marking for Shipment and Storage
ICS Number Code 83.180 (Adhesives)
UNSPSC Code 31201601(Chemical adhesives); 13111000(Resins)
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ASTM D4690-12, Standard Specification for Urea-Formaldehyde Resin Adhesives, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top