What Is Spray Sealant?
Polyurethane sealant (polyurethanesealant) is a sealant based on polyurethane rubber and polyurethane prepolymers. This type of sealant has high tensile strength, excellent elasticity, abrasion resistance, oil resistance and cold resistance, but water resistance, especially alkaline water resistance is not good. It can be divided into heating vulcanization type, room temperature vulcanization type and hot melt type. Among them, room temperature vulcanization type is divided into one-component and two-component. It is widely used in building, square, highway as caulking sealing material, as well as sealing of automobile manufacturing, glass installation, electronic filling, submarine and rocket.
Polyurethane sealant
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Polyurethanesealant is based on
Polyurethane sealant for automobile
l Product description:
Polyurethane sealant is a high-strength, high-modulus, adhesive-type polyurethane multi-purpose sealant. It is a one-component, room-temperature moisture curing, high solid content, good weather resistance, good elasticity, and will not produce any Harmful substance, no pollution to the substrate. The surface is paintable and can be coated with a variety of paints and coatings.
l Product application range:
Can be used for the bonding of windshields and side windows of vehicles in the automotive repair market, sealing of welded joints in refrigerated compartments, glass curtain walls, etc .;
It can be used for car body seam sealing, glass caulking sealing, box sealing and other general gap sealing.
It can be used for seam sealing of containers, vans, movable board houses, and bonding between steel and aluminum.
It can be used for the visible part of the body of various vehicles and general seam seals, such as skirt boards, luggage compartment covers, undercar roofs, air conditioners, etc.
l Technical parameters:
model | Polyurethane sealant |
Exterior | Black uniform paste |
Surface dry time | 40-60 min |
density | 1.1-1.2 g / cm3 |
Curing speed | 4-6mm / 24h |
Shore A hardness | 55-65 |
Tensile Strength | 6.0MPa |
Shear strength | 5.0MPa |
Sag | 0mm |
Solid content (%) | 95 |
Low temperature properties | No break at -45 |
Recommended construction temperature | 10-40 |
Service temperature | -45-90 |
l Product features
Single-component, moisture-curing, the construction of the facade will not flow;
Elastic, good initial viscosity, medium strength;
Good adhesion to various materials such as glass and aluminum plates;
Good caulking performance;
Short drawing when the glue is interrupted;
No corrosion and no penetration pollution to the substrate;
Low volatile odor;
Excellent anti-aging performance:
l Construction method
1. Use cotton yarn to remove dirt, oil and open water on the surface of the rubberized part. If the surface is easily peeled and rusted, it should be removed with a metal brush in advance, and if necessary, the surface can be wiped with organic solvents such as alcohol and acetone.
2. Cut the tip of the sealant into a certain shape according to the shape of the construction site, and apply the glue to the construction site with a manual or pneumatic glue gun.
3. Perform surface scraping and finishing within the surface drying time. For areas with particularly strict surface requirements, protective tape should be applied to both sides of the rubberized part and peeled off after scraping. If the non-construction site is accidentally contaminated, wipe it with a cotton cloth moistened with alcohol.
l Packaging and storage
Aluminum tube package: 310ml; 12 pieces / carton; limited period is 9 months.
Soft packaging: 310ML, 400ml; 25 pieces / carton; 600ml; 20 pieces / carton; limited period is 6 months.
It is recommended to avoid high temperature / water vapor in dry warehouse below 25 .
l Matters needing attention
1. It should be used up after opening, otherwise it must be kept tightly sealed;
2. The best construction under the conditions of temperature 15-35 and humidity 55% -75% RH;
3. When the ambient temperature is lower than 10 or the speed of glue production cannot meet the process requirements, it is recommended to bake in an oven at 60 for at least 30 minutes.
Polyurethane sealant for construction
Product Features of Polyurethane Sealant
Single component, non-flowing, convenient construction;
Solvent-free, non-toxic, environmentally friendly;
Good adhesion to various substrates;
No corrosion to the substrate, no shrinkage in volume;
Low modulus, high elongation, puncture resistance, fatigue resistance, and mildew resistance;
The surface can be sprayed with a variety of paints.
Application range of polyurethane sealant
This product is used for various joints that require high displacement capacity and low modulus of glue. The main application areas are: expansion joints in buildings, joints for water supply and drainage pipes.
Technical index of polyurethane sealant
product name | Low modulus polyurethane building sealant |
Product number | |
Appearance | Black, white, gray, homogeneous paste |
Density (g / cm3) | 1.35 ± 0.05 |
Touch Dry time (min) | 180 |
Extrudability (ml / min) | 80 |
Volatile content (%) | 4 |
Sagging properties (mm) | 1 |
Shore A-hardness (A) | 30 ± 5 |
Elongation at break (%) | 600 |
Tensile modulus (23 / Mpa) | 0.4 (20LM) |
Curing speed (mm / 24h) | 3 ~ 5 |
Elastic recovery rate (%) | 80 |
Pollution properties | no |
Application temperature () | + 5 + 35 |
Shelf life (month) | 9 |
