Technical Academy
Polyaspartic Polyurea Coating Test Report TRJS20260212060A
Commissioned test report issued by 西安拓然检测技术有限公司 (Xi’an Tuoran Testing Technology Co., Ltd.) on 20 February 2026. This page summarizes the submitted coating specimen, test conditions and results, with the complete five-page Chinese PDF.
Report and submitted specimen
Report TRJS20260212060A identifies Junaimei (Shandong) New Materials Co., Ltd. as both the client and manufacturer. The product is described as a polyaspartic polyurea coating. The model/specification field is “/”; no commercial model is identified. Results apply only to the tested specimen.
Dates and test conditions
The sample was received on 12 February 2026, tested from 13 to 20 February 2026, and the report was signed on 20 February 2026. The stated basis is T/CWA 204-2021, Polyaspartic Waterproof Coatings. Mixing ratio: A:B = 1:1 by mass.
Page 4 states that the client supplied film and coating specimens, with test conditions of (23±2)°C and (50±5)% relative humidity. Page 2 separately lists an inspection environment of 15–25°C and 50–60% RH. Refer to the original report for each condition.
Main results (report page 3)
| Test | Requirement or condition | Result |
| Solids content | ≥95% | 98.6% |
| Surface drying | ≤3 h | Surface dry at 3 h |
| Through drying | ≤12 h | Through dry at 12 h |
| Tensile strength | ≥15 MPa | 20.03 MPa |
| Elongation at break | ≥300% | 486% |
| Tear strength | ≥40 N/mm | 68 N/mm |
| Low-temperature flexibility | -35°C, no cracks | -35°C, no cracks |
| Water impermeability | 0.3 MPa, 120 min | No water penetration |
| Water absorption | ≤3.0% | 1.5% |
| Hardness (Shore A) | ≥60 | 92 |
| Bond strength, standard conditions | ≥2.5 MPa or substrate failure | 5.2 MPa, substrate failure |
| Water resistance | 23°C, 14 d | No cracking, delamination, tackiness, blistering or fragmentation |
| Volatile organic compounds (VOC) | ≤50 g/L | 40 g/L |
| UV ageing resistance | ≥1500 h | 1560 h |
Results after acid, alkali and salt exposure
| Exposure condition | Tensile strength retention | Elongation at break | Low-temperature flexibility |
| 2% H₂SO₄ solution, 7 d | 97% | 448% | -30°C, no cracks |
| 0.1% NaOH + saturated Ca(OH)₂ solution, 7 d | 98% | 450% | -30°C, no cracks |
| 3% NaCl solution, 7 d | 101% | 456% | -30°C, no cracks |
Scope and use of these results
The report marks all listed items on page 3 as passing. For acid, alkali and salt exposure, the requirements are tensile strength retention ≥80%, elongation at break ≥250%, and no cracks on bending at -30°C. Salt-solution immersion is not a salt-spray test.
Results apply only to the tested specimen. No specific commercial model is entered in the report. These values cannot be assigned to C1420 resin or other unmatched products, and the report does not constitute project acceptance.
The report does not specify a commercial model, production batch, film thickness or complete curing record. Before use, confirm the supplied model and batch, mixing ratio, substrate preparation, thickness and curing conditions. The 1560 h UV ageing result cannot be converted directly into outdoor service life. VOC of 40 g/L does not mean zero VOC.
This English summary is provided for reference. The original Chinese report governs test methods, conclusions and validity. Use the QR code on its first page or contact the named laboratory to verify the report.