Page 25 - WEB-I3 Insulating Glass Fabrication Supplies and Equipment

FHC INSULATING GLASS FABRICATION, SUPPLIES AND EQUIPMENT SECTION 3
FHC IG Terms and Definitions
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Neoprene
Synthetic rubber often used as a Putty Shore Hardness
glazing setting block. Air-drying glazing compounds, typically A measure of the firmness of a compound
oil-based. using a durometer hardness gauge.
Nozzle
The nozzle or tip of a cartridge or Relative Humidity (RH) Silica Gel
dispenser gun used to apply sealant. The relative humidity is the percentage of A desiccant composed of amorphous, porous
water vapor present in a specific volume of silica dioxide, noted for its expansive internal
Oxidation air at a particular temperature, compared surface area and diverse pore dimensions.
The process of oils drying when exposed to the maximum amount of water vapor
to oxygen in the air. that the air could hold at that temperature. Silicone Rubber
This curable compound is formed from
Plasticizer R. Values polysiloxane-based polymers. It’s frequently
A substance that uses solvents to induce R-values indicate a material’s resistance utilized in the application of sealants and
softening in a sealant or adhesive. to heat flow, with higher values indicating protective coatings.
better insulating capacity.
Polyisobutylene Sagging Sill
Comprised solely of polyisobutylene The lowermost part of a sash, frame, or door.
rubber, this solid sealing agent is notable Sagging happens when a material lacks
for its non-curing hydrocarbon elastomer the strength to bear its own mass. Skin
makeup. Distinguished by a minimal The initial layer that develops on the exterior
moisture vapor transmission rate, it is Sealant of sealant compounds as they harden.
ideal for serving as a dependable moisture This elastomeric substance can
barrier within insulated glass structures. accommodate over ±10% movement, Skin Bead
endowed with adhesive and cohesive Placing material on the surface of a joint
Polymer attributes to form a seal that resists while intentionally leaving a gap underneath.
The chemical compound formed when a moisture, air, and particulate intrusion.
monomer combines with itself, as seen Solvent
in sealant compounds like Silicone and Sealer A substance, like Xylocol or mineral spirits,
Polysulfide. A type of coating used to infill surface used to decrease the thickness of a liquid,
discrepancies such as cracks, pores, making it less viscous.
Polysulfide Rubber or cavities.
A synthetic polymer typically derived from Spacers
Sodium Polysulfide, commonly used to Secondary Blocks A hollow shape designed to create a
create effective sealants. Used to center lites or panels, maintain fixed air space between two glass pieces,
uniform sealant bead width, and prevent typically filled with desiccant to enhance
Pot Life excess sealant distortion. thermal or acoustic properties.
The duration following the mixing process
during which a sealant or adhesive can be Shading Coefficient Strain
correctly applied. A measure of the degree to which solar
energy is transmitted through a particular Strain is the deformation per unit length,
Primary Seal material. determined by the change in length divided
In a dual-seal system, this is the seal by the original length of a test specimen.
immediately adjacent to the air space, Shear
often constituted by the PIB moisture The reciprocal sliding motion between two Stress
barrier. surfaces affecting the sealant. Represents the force distributed over a unit
area. It is generated by the internal forces
Primer Shore A that arise when an external force is applied.
Enhances bonding between the substrate A universal scale for evaluating the hardness
and sealant, serving as an adhesive for of sealants, ranging from 1 to 100, where
various materials. soft gum rubber scores between 5 to 10, and
tire rubber typically falls between 70 to 80.
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