Environmentally friendly odor free PU sealant, with the core of solvent-free/low VOC, moisture curing, low odor/tasteless formula, balancing environmental protection, safety and sealing performance, suitable for indoor, enclosed spaces and odor sensitive scenes.
1、 Core features (odorless+environmentally friendly+performance)
Odorless/Low Odor: Contains no strong irritant solvents, with almost no pungent odor during construction and curing, suitable for home decoration, car interior, and indoor enclosed spaces.
Environmental safety: VOC ≤ 50g/L (compliant with GB18583), no heavy metals, no formaldehyde, no benzene derivatives, compliant with ROHS, automotive/building environmental standards.
Curing method: One component moisture curing (by reacting with moisture in the air), no need for mixing, no solvent evaporation, reducing odor from the source.
Performance without discount: high elasticity, weather resistance (-40 ℃~90 ℃), anti-aging, strong bonding (metal/glass/plastic/wood), paintable, anti sagging.
Health friendly: No respiratory/skin irritation risk, suitable for long-term indoor use.
2、 Principle of odorless technology
Solvent free formula: No organic solvents such as toluene, xylene, acetone, etc. are used, with polyether polyols as the main component and extremely low VOC.
Low odor catalyst: Replace traditional high odor amine catalysts with environmentally friendly low odor/odorless curing catalysts.
Plant based raw materials: Some are replaced with petroleum based materials such as castor oil and soybean oil to further reduce odor and carbon footprint.
High solid content: Solid content ≥ 95%, almost no volatiles, and no residual odor after curing.
3、 Key points for purchasing (identify these points and avoid “fake environmental protection”)
Certification: Must have GB18583-2008, ROHS, Ten Ring Certification, and Environmental Protection Certification for the Automotive Industry.
Refer to the label: Clearly state solvent-free, low VOC, odorless/low taste, formaldehyde free, benzene free; Reject the vague labeling of “environmentally friendly”.
Type: Prioritize single component moisture curing (the most common and odorless); Two components need to confirm that the curing agent has no odor.
Brand selection: Choose reputable brands such as 3M, Henkel, Sika, and Silicon Treasure for more stable quality and environmental friendliness.
On site smell: There is no pungent, sweet, or solvent odor when opening the lid, only a slight resin smell (which quickly dissipates).
4、 Construction and use (further odor control+ensuring effectiveness)
Construction environment: Maintain ventilation (accelerate moisture solidification, dissipate minimal odors), with a temperature of 5-35 ℃ and humidity of 40% -80% being optimal.
Construction method: Single component direct gluing, good thixotropy, no flow; Facade/top seam does not require primer (most substrates).
Curing time: dry for 30-60 minutes, fully cure for 24-72 hours (3mm thickness); After curing, there is no odor at all.
Cleaning: Use a specialized cleaning agent for uncured products, and trim with a utility knife after curing; It is strictly prohibited to use alcohol/acetone (which can damage the adhesive layer and produce odors).
5、 Applicable scenarios (most suitable for these places)
Home decoration: door and window sealing, kitchen and bathroom edge sealing, skirting board, ceiling, wooden floor expansion joints (odorless and non irritating).
Automotive/Transportation: Windshield, body seams, RV/container sealing (compliant with in car environmental protection).
Indoor engineering: hospital, school, office, hotel decoration (low VOC, no odor).
Electronics/Industry: Equipment sealing, electrical potting (non corrosive, odorless).
6、 Avoiding pitfalls reminder
❌ Don’t buy low-priced “three no”: mostly solvent based, with a strong pungent odor, excessive VOC, and harmful to health.
❌ Do not use solvents for cleaning: Alcohol, acetone, and banana water can damage the adhesive layer, produce odors, and reduce the sealing life.
❌ Do not apply in high temperature/high humidity environments: it may affect curing, produce slight odors, and reduce performance.
