Two-component Pure Polyurea Protective Material for High-speed Railway Subgrade EX-951
Two-component Pure Polyurea Protective Material for High-speed Railway Subgrade EX-951
Description
EX-951 high-speed railway subgrade polyurea protective material is a two-component elastic material composed of a semi prepolymer with A component as the end NCO group and B component as the end amino polyether, amine chain extender, and additives. EX-951 can be used alone or in combination with other materials as a surface protective coating, lining, wear-resistant layer, and shock-absorbing layer for high-speed railway concrete subgrade or other substrates. EX-951 can form hard coatings of different thicknesses and can be applied to various occasions and handle suitable substrates. EX-951 is insensitive to moisture and humidity and can be used in harsh environmental conditions.
Key Characteristics
- Fast curing speed, continuous spraying on the facade and top without sagging.
- Excellent physical properties, with good adhesion to various substrates.
- Not sensitive to moisture and temperature, with good thermal stability.
- 100% solid content, no VOC, no pollution, environmentally friendly.
- Has excellent anti-corrosion, anti slip, anti-seepage, and wear-resistant properties.
- Good weather resistance, no powdering, and no color loss.
- The coating is seamless and has a smooth appearance.
- Can be manually pelletized to achieve a "protrusion" effect, beautiful and anti reflective.
Application
EX-951 high-speed railway subgrade polyurea protective material has an extremely fast reaction speed, with a single spray thickness of tens of millimeters. The coating has a uniform and beautiful appearance, and can be widely used for high-speed railway concrete subgrade protection; And it can be applied to the protection of bridge piers of cross sea bridges, the protection of inner walls of underwater tunnels, waterproofing of urban subways, waterproofing of roofs of high-end buildings, concrete stands of sports venues, factories, ship decks, and anti-corrosion of offshore drilling platforms.
For applications that require anti rotation and extinction, its extremely fast reaction speed can be utilized to directly obtain a "protrusion" coating with uniform particles on the surface through spraying.
Performance Specifications
| Test Item | Test Result |
|---|---|
| Solid Content | 100% |
| Gel Time | 10 s |
| Hardness | ≥ 90 Shore A |
| Elongation | ≥ 400% |
| Tensile Strength | 16 MPa |
| Tear Strength (KN/m) | 60 |
| Water Absorption Rate | ≤ 5% |
| Wear Resistance/(Akron method, cm³/1.61km) | No cracks, wrinkles or peeling phenomenon |
| Impact resistance/(drop hammer height 100cm) | ≤ 0.5 |
| Impact strength/(Kg. cm) | 20 |
| Adhesion/(metal substrate, pull-out method, MPa) | ≥ 2.5 |
| Color | Can adjust according to customer's requirement. |
| Coefficient of Friction | 0.85～0.96 |
| Mixing Ratio/(Volume) | 1:1 |
| Density (g/cm³) | 0.95～1.05 |
| Drying time (25 ± 2 ℃) | Tack free time within 1 minute, reach walking intensity in 10 minutes. |
| Thickness | 2-3mm (depending on user requirements) |
| Painting interval | shortest, unlimited time; The longest, not exceeding 6 hours |
| Flash Point | ＞100℃ |
Packaging
A: 200kgs/drum, B: 220 kgs/drum or according to customer's requirement.
Storage and Transportation:
This product should be stored in a cool, ventilated, and dry warehouse. It is strictly prohibited to be exposed to rain, sun, isolated from fire sources, and kept away from heat sources. The storage temperature should be between 15-40 ° C.
This product has a storage period of 12 months from the date of production without opening the original packaging. If it exceeds the storage period, it can be inspected according to the items specified in this product standard. If it meets the technical requirements, it can still be used.
This product does not contain organic solvents and can be transported as non hazardous materials during transportation. During transportation, rain and sun exposure should be strictly prohibited, and relevant regulations of the transportation department should be followed.
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