One Component Moisture Cure Strong Adhesion Polyurethane Adhesive Silicone Sealant for Mirror
One Component Moisture Cure Strong Adhesion Polyurethane Adhesive Silicone Sealant for Mirror
Substrate: PU polymer
DM231 is a one-component polyurethane sealant based on PU polymers, moisture curing type. The curing speed of mortar is related to the temperature and humidity of the environment. Under high-temperature or high-humidity conditions, it will be quickly crusted. Low-temperature and low-humidity will delay the curing process. The final curing time is also related to the thickness of the glue applied.
DM231 is a sealant that is specially used for vertical facade caulking. It has features of high modulus, good thixotropic property, no sagging, high elongation, and good elasticity. It can completely replace silicone adhesive for architectural and engineering facade caulking. It is suitable for all kinds of porous and non-porous materials, with excellent adhesive properties, good waterproof performance, excellent weather resistance and other outstanding features. It is a universal cost-effective sealant.
TDS
|
Indicator |
Parameter |
|
Color |
Bright black |
|
Outer appearance |
Paste |
|
Density, g/cm³ |
1.46 ± 0.03 |
|
Consistency |
8.1± 0.2 |
|
Hardness, Shore A |
60 ± 2 |
|
Extrusion. ml/min |
≥100 |
|
Sag rate, mm |
0 |
|
Surface dry time, min |
25-40 |
|
Curing speed, mm/24h |
3.0-5.0 |
|
Peel adhesion, Cohesive destruction, % |
≥70 |
|
Elongation at break, % |
≥600 |
|
Tensile Strength, Mpa |
≥3.0 |
|
Breaking strength, Kn/m |
≥20 |
Test under situation: 23℃×50%RH×28days
Test under situation: 23℃×50%RH×28days
Application field: Automobile windshield bonding
Features & Advantages
l Bright black, can be scratched on surface after applied. Impervious to oil.
l Odorless, low VOC, PVC free, excellent antibacterial and anti-mildew effects, safe to use.
l Good adhesion to various substrates, with good tear resistance, excellent mechanical properties.
l Anti-aging, UV-resistant, waterproof, oil-resistant, more than 10 years of service life.
l After curing, the shrinkage rate is very low, the shaping is good, there is no dent, and the glue is smooth.
l Low temperature resistance, good elasticity and adhesion in the range of -40°C~90°C.
l No primer require
.
Typical applications
DM231 is suitable for elastic sealing of various substrate joints, including stainless steel, aluminum, copper, PVC, polyester, ceramics, wood, coating, etc., but not suitable for PP and PTFE materials. Used as general sealant for outdoor use in the construction area.
Application area
Used for building joint sealing, such as structural joints and isolation joints such as deformed doors, doors and windows, facades, and claddings. The base surface can be concrete, brick, wood, metal, PVC, glass, ceramics and other materials.
Application tips
l The bonded surface must be clean, dry and free of putty before bonding.
l Substrates that may seep out of oil are not suitable for direct application of sealant.
l For rusted or corroded metal surfaces (such as aluminum oxide, copper, iron oxide rust surface), in order to ensure the bonding effect, the rust on the surface layer needs to be worn off before coating.
l Due to the construction environment, construction methods, and material differences, pre-testing is required before use to ensure adhesion performance.
l The optimal coating temperature is +15 ~ +40°C. When the temperature is low, the extrusion resistance increases, warm up the adhesive before use.
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