A substance used to join two or more materials. Adhesives have a wide range of properties
which make them suitable for a variety of manufacturing situations.
Adhesive Joint Strength
DIN 53283
Application
The act of applying as a means; the employment of means to accomplish an end; specific use.
ASTM
A test method called American Society for Testing and Materials
Brittle
A material’s unwillingness to be drawn, stretched, or formed. Brittle materials tend to break or
crack if subjected to these forces.
Compliant Compliant with the requirements and procedures in the MSDS (Material Safety Data
Sheet), see MSDS
Chemical Properties
The properties that describe a material’s ability to withstand deterioration by solvents,
chemicals, or water on the chemical level.
Chemical Resistance
A measure of the sensitivity of a material to attack or corrosion by a chemical material
Coating
Material applied to a surface
Coffin
A cylindrical casing protecting electrical cables or joints
Cohesive Strength
The ability of adhesive molecules to remain connected and not tear apart. Adhesives with
low cohesive strength bond to a surface, but still cannot hold the joint together.
Colour
The quality that determines an adhesive’s hue, lightness, or saturation. Colour is
determined by light reflected by the adhesive, coating or compound
Cold Temperature
Curing A finishing, protecting, or enclosing layer that seals a component at ambient
temperatures
Compression Set
The compression set ASTM D395 determines the extent a polymer will be permanently
deformed by a prolonged compressive load.
Compression Strength
The property of a material that relates to its ability to resist compression loads, tested in
accordance with ASTM D695
Compressive-Shear Str.
DIN 54452
Contaminant
Contaminants can be considered anything that ends up on a surface. Contaminants can
be wet such as water, oil or grease, or dry such as dust, metal shavings or off-cuts.
Preventing floor contaminants is one of the best things you can do to prevent slips
Copyright
The exclusive right to the publication, production, or sale of the rights to a literary
Corrosive Resistance
A measure of the resistance of a material to corrosion tested in accordance with ASTM
B117
Creep Strength
The ability of an adhesive, coating or compound to withstand a constant weight or force
over an extended period of time. Refer DIN 53284
Cross Link
To develop primary bonds between polymer molecules.
Curing Activator
A type of additive that increases the speed of curing in an adhesive, coating or
compound.
Curing Cycle
Time and temperature necessary for a material to reach its functional properties
Curing Time
Time required for reacting polyurethane composition to achieve certain properties
Delamination
The separation or peeling away of a coating or compound from the substrate
DeMattia Flexer
The DeMattia Flex test ASTM D430 is designed to bend a polymer to produce cracking
as a measure of performance.
Demarcation
A safety yellow line
Die C Tear
ASTM D 624C test uses an un-nicked 90 degrees angle specimen and provides a good
measure of tear initiation and propagation.
Dielectric Constant
(Relative Permittivity) Dielectric Constant is used to determine the ability of an insulator to
store electrical energy. The dielectric constant is the ratio of the capacitance induced by
two metallic plates with an insulator between them to the capacitance of the same plates
with air or a vacuum between them. Refer ASTM D150, IEC 60250
Dielectric Strength
A measure of the electrical strength of a material as an insulator. Dielectric strength is
defined as the maximum voltage required to produce a dielectric breakdown through the
material and is expressed as Volts per unit thickness. The higher the dielectric strength
of a material the better its quality as an insulator. Refer ASTM D149, IEC 80243
DIN
A test method called Deutsche Industire Norms
DIN Abrasion
This is a specialized test DIN-53516 of a polymer 10 mm thick and 12 mm in diameter
placed under force on a roll with sandpaper.
Dissipation Factor
Is defined as the reciprocal of the ratio between the insulating materials capacitive
reactance to its resistance at a specified frequency. It measures the inefficiency of an
insulating material. If a material were to be used for strictly insulating purposes, it would
be better to have a lower dielectric constant. Refer ASTM D150, IEC 60250
Durometer
The two most common scales, using slightly different measurement systems, are the
ASTM D2240 type A and type D scales. The Shore A scale is for softer plastics, while the
Shore D scale is for harder ones
The measure of a material’s ability to reshape itself after it has been stretched or deformed. A
rubber band has high elasticity.
Elongation
The act of lengthening, or the state of being lengthened
Environment
Situation and conditions affecting the efficiency of a coating or compound
Estimate
A document to notify the customer of the approximated price within a given time frame
Flash Point
Temperature at and above which a liquid gives off enough flammable vapor to form a mixture
with air that can be ignited by contact with a hot surface, spark, or flame. Lower the flash point,
greater the fire hazard.
Flexural Strength
The maximum fiber stress developed in a specimen as a function of strain in a 3-point bending
test. ASTM D695
The temperature at which the adhesive physically changes from a solid to a liquid or from a
Temperature to a solid.
Guarantee
A positive assurance that something will be done in the manner specified
Hardness
The hardness test measures the indentation into the compound of the indenter under a
load. It is measured on a scale of 0 to 100. Hardness is typically measured on the Shore
A or the Shore D scale. A reading above 90 on the Shore A scale will generally overlap
with readings below 20 on the D scale. Further information may be found by reading the
ASTM D2240 Durometer Hardness test methods.
Hazard
Exposure to danger, chance or risk (see Risk) a source or a situation with potential for
harm (where harm is defined in terms of human injury or ill-health, damage to property,
damage to the environment, business loss etc or a combination of these)
Hydrolysis
The decomposition of an adhesive, coating or compound due to extensive water exposure.
Hydrolysis negatively affects the properties of an adhesive
The ability to withstand shock loading; or, work required to fracture under shock loading a
specified test specimen in a specified manner,tested in accordance with ASTM D256
In-Situ
To treat or service something in place, without removing
ISO
A test method called International Standardization Organization. ISO standards are more and
more utilized due to the easier communication on the international level.
COOMING SOON………
The costs associated with the maintenance of any facility, equipment or asset. It includes the
cost of support staff involved in problem.
Moisture
Water that is condensed as droplets. Moisture can affect the properties of adhesives, coatings
and compounds.
MSDS
(Abbreviation for the Material Safety Data Sheet) a form containing data regarding the
properties of a particular substance, intended to provide workers and emergency personnel
with procedures for handling or working with that substance in a safe manner
NBS Abrasion
NBS Abrasion test ASTM 1630 is when materials are exposed to two types of abrasion: sliding
and impingement. Sliding is the passing of one surface across the surface of the polymer.
Impingement tests the wear of a polymer surface as exemplified by sand particles striking the
surface.
Is the ability of a material to resist forces that can pull it apart by separating a flexible surface
from a rigid surface. In general, adhesives have low peel strength. Refer DIN 53282 and DIN
53289
Pot Life
The time interval following the addition of an accelerator or activator before chemically curing
material will become too viscous to apply satisfactorily.
Properties
The essential characteristics of a material that distinguish it from other materials.
Public Liability
Public Liability is part of the law of tort which focuses on civil wrongs
An offer to perform services or sell products for the quoted price within the indicated time frame
(see also ‘Estimate’)
Rebound
The rebound test ASTM D2632 determines the amount of energy a sample will absorb. A
sample of material 28 mm in diameter and 12-13 mm thick has a plunger dropped from a
specific height. The lower the plunger rebounds (more energy absorbed by the sample), the
lower the value.
Ross Flexer
The Ross Flexer test ASTM D1052 point determines the resistance of an elastomer to cut
growth when subjected to repeated bending.
Refer DIN 54451
Shelf Life
The length of time an adhesive, coating or compound can remain in storage without losing
its properties.
Shore A or D
The two most common scales, using slightly different measurement systems, are the
ASTM D2240 type A and type D scales. The Shore A scale is for softer plastics, while the
Shore D scale is for harder ones
Shrink
To reduce in size. Adhesives shrink as they cure and solidify.
Silicone
Adhesive A type of structural adhesive made from silicone, a water repellent material that contains
the silicon atom. Silicone adhesives will set as soon as they contact air.
Slip Resistance
A pedestrian surface where the available friction is sufficient to enable a person to traverse
that surface without an unreasonable risk of slipping
Standards
Published documents by a recognized authority or organization providing information
about construction, safe work practices or materials
Stress/Strain Modulus
Typically, the stress/strain ASTM D412 modulus is measured as the force needed to
stretch a sample at 100, 200, and 300% of elongation. These measured parts are
generally 2 mm thick and 6 mm wide and prepared using a Die C mould.
Substrate
Primary or underlying material on which other materials (such as adhesives, coating and
compound treatment) are applied, or from which other materials are made
Surface Resistivity
The resistance to leakage current along the surface of an insulating material. The higher
the surface resistivity, the lower the leakage current and the less conductive the material
is. Expressed in ohms (per square) Refer ASTM D257, IEC60093
Tear Strength
The tear strength ASTM D3574 of a sample measures the energy requirements needed to
tear a partially slit sample at a specific rate of separation.
Temperature
A measurement of the degree of heat within a material.
Temperature Resistance
The ability of an adhesive, coating or compound to work at very high or very low
temperatures.
Tensile Strength
A material’s ability to resist forces that attempt to stretch it or pull it apart. In general,
adhesives and compounds have high tensile strength. Refer DIN 53228
Tensile Shear Strength
A shear load is a force that tends to produce a sliding failure on a material along a plane
that is parallel to the direction of the force. When a paper is cut with scissors, the paper
fails in shear.
Test Methods
The test methods which are used to determine the properties of elastomers are in most
cases standardized methods, Refer ASTM (American Society for Testing and Materials),
DIN (Deutsche Industire Norms), and ISO International Standardization Organization).
ISO standards are more and more utilized due to the easier communication on the
international level.
Thermal Conductivity
The quantity of heat transmitted through a unit thickness in a direction normal to a surface
of unit area, due to a unit temperature gradient under steady state conditions.
Thermal Expansion
A measure of the expansion of a material as heat is applied, tested in accordance to
ASTM E228
Torsion-Shear Strength
Refer DIN 54454
Translucent
Transmitting light but causing sufficient diffusion to prevent perception of distinct images
Transparent
Clear. The ability to easily view and identify an object
Two-Part Curing
A type of adhesive, coating or compound that must be mixed with a curing accelerator or
activator in order to cure.
A type of structural adhesive made from urethane, a manufactured polymer known for its
strength and versatility. Urethane adhesives form flexible joints
Vicat Softening
The Vicat Softening ASTM D1525 softening point is a useful method to compare the heat-
softening characteristics of various polymers
Viscosity
A liquid’s resistance to flow. The higher the viscosity, the more the liquid resists flowing.
Viscous
Having the ability to resist flow. Honey is a good example of a viscous liquid, while water is not.
VOC
Volatile Organic Compounds (VOCs) refers to chemical compounds which have significant
vapour pressures which can be dangerous to human health and have adverse effects on the
environment
Volume Resistivity
The resistance to leakage current through the body of an insulating material. The higher the
surface/volume resistivity, the lower the leakage current and the less conductive the material is.
Expressed in ohms cm. Refer ASTM D257, IEC60093
Life The time period during which an adhesive, coating or compound must be used after its
container has been opened or, in the case of two-part curing adhesives, coatings and
compounds after it has been mixed.
COOMING SOON……