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PU-30 Low Modulus Construction Polyurethane Sealant
PU-30 Low Modulus Construction Polyurethane Sealant
PU-30 is a one-component, moisture-curing polyurethane joint sealant designed to seal expansion, control, and connection joints in construction. Its "low modulus" formulation means it offers high elasticity and stretches easily under stress without putting undue pressure on the joint edges
∎Technical Data Table
PROPERTY PU-30 | |
Appearance | Black/Grey/White Paste Uniform Sticky Liquid |
Density (g/cm³) | 1.35±0.05 |
Tack Free Time (Hr) | ≤180 |
Tensile modulus(MPa) | ≤0.4 |
Hardness (Shore A) | 25±5 |
Curing Speed (mm/24h) | 3 ～ 5 |
Elongation at Break (%) | ≥600 |
Solid Content (%) | 99.5 |
Operation Temperature ( ℃) | 5-35 ℃ |
Service Temperature ( ℃) | -40~+80 ℃ |
Shelf Life (Month) | 9 |
Note：All data above were tested under special condition (7 days after full cured).
∎Product Description
PU-30 is a one-component moisture curable polyurethane sealant with good sealing and flexibility.
∎Key Features
● Low modulus and high elasticity
● Moisture-cure, no cracking
● Bonding well with many substrates, no corrosion and pollution to substrate
●One component, convenient to apply, non poisonous and odor less after curing, green and environmental
●High Movement Capability: Accommodates significant expansion and contraction caused by temperature fluctuations without cracking.
●Weather & UV Resistance: Highly durable against rain, sunlight, and extreme temperatures, making it suitable for both indoor and outdoor use.
● Primerless Adhesion: Bonds excellently to concrete, brick, natural stone, aluminum, wood, and glass.
● Permanent Elasticity: Cures into a permanently flexible rubber-like seal that does not shrink
∎Typical Applications
●Sealing of expansion and settlement joint of house building, plaza, road, airport runway, anti- all, bridges and tunnels, building doors and windows etc
●Sealing of upstream face crack of drainage pipeline, drains, reservoirs, sewage pipes, tanks, silos etc
●Sealing of through holes on various wall and at floor concrete
●Sealing of joints of prefab, side fascia, stone and color steel plate, epoxy floor etc
Expansion Joints: Used heavily in roads, plaza decks, bridges, and airport runways.
Building Facades: Ideal for sealing perimeter joints around windows, doors, and prefabricated concrete elements.
Civil Engineering: Suitable for tunnels, parapets, and retaining walls.
Infrastructure: Used for sealing cracks in drainage pipelines, tanks, and sewage pipes
.
∎Packing Specification
● Tube 310ml
●Sausage 600ml
●Pail/Drum 25kg/drum, 230kg/drum
20pcs per box
30kg pail, 36 pails per pallet
∎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.
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PU 6030 Light yellow translucent Polyurethane potting compound
PU 6030 is a two-component solvent-free polyurethane material at room temperature or heat curing. It is light yellow and transparent after curing. It is used for two-component sealing, filling, flame and other fields. The raw material does not contain heavy metals, green environmental protection, wide process operability, high physical properties of the finished product, and good adhesion to the substrate. Room temperature and heating curing can be, can be deep curing, curing less heat, low shrinkage rate; Excellent
flexibility after curing, with good flame retardant effect.
l Excellent low temperature characteristics, excellent weather resistance
l Excellent flame retardancy, 94 V-0
l Excellent electrical insulation, stability
Typical application
l This product is often used in electronic capacitors, automotive electronic module potting;
l Household appliances such as lampblack stove, microwave oven, rice cooker, washing machine,
l Good water resistance, moisture resistance, water absorption is very low
l Good adhesion to most metals and plastics air conditioning control PCB board filling glue seal;
l Life smart toilet, induction toilet, metal induction garbage can circuit board and magnetic coil of moisture and waterproof potting protection.
Conventional performance
Test items Units and Conditions Test standard A / B
Appearance A
Visual Visual Clear yellow fluid
B Visual Clear yellow fluid
A+B Visual Light yellow translucent fluid
Viscosity A
25℃ cps GB/T 2794-2022 600± 350
B GB/T 2794-2022 400±250
A+B GB/T 2794-2022 500±200
Density A 25℃ g/ml GB/T 13354-1992 0.96±0.05
B GB/T 13354-1992 1.10±0.05
Mixing ratio Weight ratio ---- A ： B = 100： 100
Operation time 25℃ min, 150g GB/T 10247-2008 10-20
Gel time 25℃ ,min, 150g GB/T 10247-2008 30-50
Curing conditions C /h, 150g GB/T 10247-2008 25℃/24h or 70℃/2h
Post-cure characteristics
Items Units or conditions Test standard PU 6030
Hardness Shore-A GB/T 531-2008 25-45
Water absorption 24hrs, 25 °C, % GB 8810-2005 < 0.3
Dielectric strength 25 °C, kV/mm GB/T 20028-2005 > 16
Flame resistance UL-94, grade ANSI/UL-94-1985 V-0
Application temperature ℃ GBT 20028-2005 - 60-120
Thermal conductivity W/m.K ASTM D5470 0.2
Volume Resistance 25℃ , Ω·cm GB/T 1692-2008 >1*1012
Version 1.01 / 2026-01 / PU 6030 www.shmaxtech.com
Dielectric constant 50Hz ，25℃ GB/T 1693-2007 3.0
Water vapor transmission rate 23±℃, 50± 5%RH GB/T 1037-2021 11.1 g/m2 24h
* Note: The above performance data is the typical test data of the product at 70% humidity and 25℃ temperature. It is only for the refe rence of customers, and cannot be completely guaranteed to achieve all the data in a specific environment. When using, please refer to the actual data.
