High Modulus UV Resistance Weather proof Construction Polyurethane Sealant
PU-40
∎Product Description
PU-40 is a one-component moisture curable polyurethane sealant with good sealing and flexibility.
It has no corrosion, no pollution, no pollution to the environment, no puncture, easy repair and good adhesion to concrete, stone, metal and other materials substrates.
PU-40 Construction Joint Polyurethane sealant is a multifunction gun-grade polyurethane-based construction sealant, it is of high modulus and cures by reaction with atmospheric moisture to form a soft rubber-like material with moderate elasticity and high adhesion strength
∎Technical Data Table
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PROPERTY PU-40
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Raw Materials
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Polyurethane
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Appearance
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Black/Grey/White Paste
Uniform Sticky Liquid
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Density (g/cm³)
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1.35±0.05
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Tack Free Time (Hr)
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≤180
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Tensile modulus(MPa)
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≤0.4
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Hardness (Shore A)
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35±5
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Curing Speed (mm/24h)
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3 ～ 5
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Elongation at Break (%)
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≥600
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Solid Content (%)
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99.5
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Operation Temperature ( ℃)
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5-35 ℃
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Service Temperature ( ℃)
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-40~+80 ℃
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Shelf Life (Month)
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9
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Note：All data above were tested under special condition (7 days after full cured).
∎Key Features
- UV resistance excellent aging resistance,
- Low modulus and high elasticity
- Moisture-cure, no cracking
4. Bonding well with many substrates, no corrosion and pollution to substrate
5. One component, convenient to apply, non poisonous and odor less after curing, green and environmental
∎Typical Applications
1.Sealing of expansion and settlement joint of house building, plaza, road, airport runway, anti- all, bridges and tunnels, building doors and windows etc
2.Sealing of upstream face crack of drainage pipeline, drains, reservoirs, sewage pipes, tanks, silos etc
3.Sealing of through holes on various wall and at floor concrete
4.Sealing of joints of prefab, side fascia, stone and color steel plate, epoxy floor etc
∎Packing Specification
●Cartridge 310ml
●Sausage 400ml
●Sausage 600ml
●Pail/Drum 240kg
310ml cartridge , 24pcs per box, 600ml sausage, 20pcs per box .
∎Direction for use
Tool: Manual or pneumatic plunger caulking gun
●Cleaning: Clean and dry all surfaces by removing foreign matter and contaminants such as oil dust, grease, frost, water, dirt, old sealants and any protective coating.
●For cartridge
1.Cut nozzle to give the required angle and bead size
2.Pierce the membrane at the top of the cartridge and screw on the nozzle
3.Place the cartridge in an applicator gun and squeeze the trigger with equal strength
●For sausage
1.Clip the end of the sausage and place in barrel gun
2.Screw end cap and nozzle on to barrel gun
3.Using the trigger extrude the sealant with equal strength
∎Attention of operation
● Choose this product, primer, activator and other matching product, must have bonding test before bonding the materials, to ensure that they have good compatibility. At the same time, before application, should guarantee that the sealant, primer and activator are in the warranty period.
●Please strictly according to the application process, any violation of the application operation may cause bonding failure. This product is innocuous after curing completely, but before
curing, please avoids contacting with eyes and skin. In case of eyes and skin contact, wash immediately and thoroughly with soap and water. If the situation is serious, please go to see a doctor immediately
∎Transport &Storage
● Transport: Keep the sealed product away from moisture, the sun, high temperature and avoid collisions.
● Storage: Keep the sealed product into cool, dry place.
● Storage temperature: 5~25℃. Humidity: ≤50%RH.
●Cartridge and Sausage :9 month. Pail/Drum:6 month.
Notice:If the temperature is higher than 40 ℃ or the humidity is more than 80%RH, the shelf life may be shorter.
