By Nur Isfarina binti Ismail
A mixture in liquid/ semiliquid that used to bond
two item together by adhesion to surface
From synthetic or natural.
Required control temperature to cure.
: Substances that
liquid/semiliquid that used to bond 2 or more
substrate by surface attachment.
: refer to adhesive that source from
: solid, liquid or semiliquid synthetic
organic polymer uses as basis of adhesive,
hardener or etc.
: a process that held 2 or more
material using adhesive.
ADHESIVE BONDING: method used to joined 2
or more material using adhesive.
ADHEREND : a material that will held together
: condition that having minimal
: single substances/ adhesive
held together by primary a secondary valence
PRACTICAL ADHESION: measure physical
strength of adhesive bond.
INTRINSIC ADHESION: molecular forces of
attraction between liquid and solid.
: component of adhesive composition
that responsible for adhesive forces.
HARDENER: substances that added into
adhesive to control curing.
SOLID CONTENT: percentage of non-volatile in
SHELF TIME: maximum time the adhesive can
GLUE SPREAD: amount of glue applies in wood
VISCOSITY: the level of consistency in adhesive;
either very liquid and easy to flow or very thick
and difficult to flow.
INTRINSIC BONDING: molecular forces that
attraction between the adhesive and substrate.
GAPS FILLING PROPERTIES: ability of glue to
fill the gaps of joint.
GEL TIME: required time for adhesive to become
ASSEMBLE : the time between spreading
adhesive until it be pressed/heated.
INTERFACE: a point where 2 things meet in
interact at the surface.
GLUELINE: where the adhesion takes place.
BONDING STRENGHT: the strength of bonding
IMPORTANT FACTOR IN
- high strength in timber joint.
- cost of adhesive
- ease of application
- resistant to moisture and heat
- colour depend on strength and type of adhesive
PROPERTIES OF ADHESIVE
AFFECT STRENGTH OF
FEATURES: solid, semi-solid or liquid
SPREAD: ability to spread and flow
PENETRATE: ability to penetrate in adherent
COVER: ability to displace most contiminant
CURED: become solid when it cured
Can combined small particles.
Glueline provide and act as electrical insulator.
Prevent metal from corrosion.
Low cost than fastener.
Can joint other material (plastic + wood).
Required special surface treatment.
Bonding can induce other failure.
Low shelf time.
Difficulty to predict durability.
Sometimes more expensive from fastener.