BS EN 301:2006 pdf free.Adhesives, phenolicand aminoplastic, forload-bearing timberstructures—Classification andperformance requirements.
BS EN 301 This European Standard establishes a classification for phenolic and aminoplastic polycondensationadhesives according to their suitability for use for load-bearing timber structures in defined climaticexposure conditions, and specifies performance requirements for such adhesives for the manufactureof load-bearing timber structures only.
The performance requirements of this standard apply to the adhesive only, not to the structure. Thisstandard does not primarily cover the performance of adhesives for the production of wood-basedpanels.
This standard is primarily intended for the use of adhesive manufacturers and for the use in timberstructures bonded with adhesives, to assess or control the quality of adhesives. This standard onlyspecifies the performance of an adhesive for use in an environment corresponding to the definedconditions.
Such an adhesive meeting the requirements of this standard for its type is adequate for use in a load-bearing structure, provided that the bonding process has been carried out according to an appropriateproduct standard.
The following referenced documents are indispensable for the application of this European Standard.For dated references, only the edition cited applies. For undated references, the latest edition of thereferenced document (including any amendments) applies.
EN 302-1，Adhesives for load-bearing timber structures – Test methods – Part 1: Determination ofbond strength in longitudinal tensile shear strength
EN 302-2,Adhesives for load-bearing timber structures —Test methods —Part 2: Determination ofresistance to delamination
EN 302-3,Adhesives for load-bearing timber structures — Test methods — Part 3: Determination ofthe effect of acid damage to wood fibres by temperature and humidity cycling on the transversetensile strength.
phenolic resin thermosetting synthetic resin derived from a condensation reaction of a phenol with an aldehyde.
aminoplastic resin thermosetting synthetic resin derived from a condensation reaction of the -NH groups or -NH, groupsof amines or amides with aldehydes.
Adhesives for structural purposes shall produce joints of such strength and durability that the integrityof the bond is maintained in the assigned service class throughout the expected life of the structure.
Two types of adhesive, l and ll, are classified according to their suitability for use in the climaticconditions given in Table 1.BS EN 301 pdf download.