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JS-900LM
Low modulus MS sealant

JS-900LM low modulus MS sealant is a high-quality, single component, paintable, and pollution resistant neutral modified sealant based on silane modified polyether polymers. This product does not contain solvents and is pollution-free to the environment. At the same time, it can produce superior adhesion for most building materials without the need for a primer.

Product features

1. Environmental protection products: solvent-free, PVC free, isocyanate free, non-toxic, odorless, pollution-free, and fast curing;

2. Surface Applicability: Compatible with most industrial paints, it can be sprayed after surface drying, which does not affect the curing rate;

3. Easy to use: excellent thixotropy and extrudability, wide temperature range.

4. Good adhesion: Excellent adhesion performance for most building materials such as stone, aluminum, ceramics, prefabricated concrete components (FC boards), cement fiber boards, etc; No pollution to porous substances.

5. Excellent weather resistance, aging performance, long-term superior tensile, compressive, and shear stress traceability, while the good weather resistance of the sealant ensures the durability and excellent waterproofing of the seal;

6. Neutral curing, non corrosive to fine, steel, stone, prefabricated concrete components (PC board), cement fiber board, and other materials, overcoming the easy pollution of ordinary silicon steel adhesive

The drawbacks of the substrate.

Product parameters
The following data is for reference only
Model JS-900LM    
Lnspection standards Regular appearance Frosted type Technical indicators
Color Black, white, gray, etc    
Moisture curing Curing method    
Density(g/cm³) 1.5±0.1 1.55±0.1 GB/T 13477.2-2003
Non volatile matter% ≥99.5 GB/T 2793-1995
Sag(mm) ≤2 ≤2 GB/T 13477.6-2003
Surface drying time(mins) 30-120 30-60 GB/T 13477.5-2003
Curing speed(mm/24h) 2-4 2-4  
Curing time (humidity 50 ± 5%, temperature 23 ± 2 ℃) 3-14 days
After 21 days of curing at a humidity of 50 ± 5% and a temperature of 23 ± 2 ℃:
Hardness (Shore A) ≤30 ≤35 GB/T 531.1-2008
Fixed elongation adhesion 100% No damage No damage GB/T 13477.8-2017
Elongation at break(%) 500 350 GB/T 528-2009
Breaking tensile strength(MPa),≥ ≥1.0 ≥0.8 GB/T 528-2009
Pollution NO Pollution JC/T 881-2001 Appendix A
Elastic recovery rate ≥70 ≥60 GB/T 13477.17-2017
Note: The frosted model is 20LM Conventional version is 25LM
Color and packaging

JS-900LM low modulus MS sealant is available in three standard colors: black, white, and gray. Other colors can also be provided according to customer needs. The conventional appearance of JS-900LM low modulus MS sealant is fine, glossy, and without obvious particles. At the same time, it can provide a frosted appearance according to customer needs.

JS-900LM low modulus MS sealant is a soft packaging with a net capacity of 600mL aluminum plastic film.

Storage and expiration date

JS-900LM low modulus MS sealant is packaged in a dry and ventilated environment with a temperature of 27 ℃ or lower. The product has a shelf life of 12 months from the date of production.

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