* Additives (solventborne), developed for high-solids coatings to provide decreased tack-free time
, improved sag resistance, and a wider window for polishing with minimal impact on VOC content
Loctite SI 5930 FIT (for "fix in tire" bonding of acoustic foam and sensors) is a one-component room temperature vulcanizing (RTV) silicone rubber adhesive supplied as thixotropic black paste with a tack-free time
of approximately 15 minutes, depending on ambient humidity.
Stewart tested a variety of waterborne PUDs, comparing the resulting coatings tack-free time
; pencil hardness; water, scratch and abrasion resistance; as well as their elongation at the break.
Coating cure was characterized by determining open time, dust-free time, and tack-free time
as defined by Klaasen and van der [Leeuw.sup.24]
From the dry time data, the circular dry time shows improvement at the lowest level of modification, while the Zapon tack-free time
(200 g) does not improve until the highest level of modification is made.
for two connectors and a tack-free time
of less than 5 min.
It is well suited for applications where quick tack-free time
It is a high-melting solid in micronized form, which can be combined with epoxy resin in a slurry that affords long tack-free time
or room-temperature latency.
The exotherm reaction achieves a 45-second gel time along with a tack-free time
of less than 3 minutes at room temperature with 50% Relative Humidity (RH), yielding an appealing smooth or textured semigloss application.
wdgsilicones.com) Table 1--physical and technical properties--HSS 540 R2R coating Solids content % by weight 95 % by volume 95 (+/-2) Specific gravity at 77[degrees]F (25[degrees]C) 1.1 Tack-free time
1-2 hours Cure time 2-6 hours As cured: Hardness, durometer A, points 21 Tensile strength, psi 200 Elongation, % 150% Permeability *, perms 4.2 Modulus at 100% elongation 200 Modulus at 200% elongation - Temperature stability, [degrees]F -37 to 212 Temperature stability, [degrees]C -35 to 100 Weatherometer QUV 10,000 hours No degradation Volatile content per ASTM D2369 10 grams/liter Flamespread per ASTM Class A * 20 mil at 100[degrees]F (38[degrees]C) and 90% relative humidity
SnapSil RTV230A/B adhesive is a two-component, room temperature cure silicone adhesive that features a reported tack-free time
of six min., primer-less adhesion to many substrates, and flexibility in use and storage.
They can be formulated with no VOCs, no odor and with a tack-free time
of as little as 45 minutes.