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| Feature: | Photodegradable |
| CAS No.: | 9002-88-4 |
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Technical Index | Requirement | Test Standard | Application Significance |
Melt Flow Rate (MFR) | 0.6–8.0 g/10min (190℃/2.16kg) | GB/T 3682.1-2018 / ASTM D1238 | Ensure stable film blowing process to avoid film breakage and uneven film thickness, and ensure compatibility with greenhouse film production equipment. |
Moisture Content | ≤0.3% (≤3000 mg/kg) | GB/T 6283-2008 / ISO 760 | Prevent bubble formation and pinholes during film coating to ensure a smooth and defect-free film surface. |
Ash Content | ≤0.5% (≤5000 mg/kg) | GB/T 9345.1-2008 / ASTM D2584 | Control impurity content to prevent crystalline spots and damage on the film surface, thereby enhancing the toughness of greenhouse films. |
Oxidation Induction Time (OIT) | ≥10 min (200℃) | GB/T 19466.6-2009 / ISO 11357-6 | Enhance the aging resistance of greenhouse films to prolong their service life and adapt to long-term outdoor use |
Tensile Elongation at Break | ≥70% of virgin LDPE(≥VIGIN LDPE 70%) | GB/T 1040.1-2018 / ASTM D638 | Ensure the greenhouse film has good toughness and is resistant to tearing, thereby withstanding external forces such as wind and rain impacts. |
Density | 0.918–0.930 g/cm³ | GB/T 1033.1-2008 / ASTM D1505 | Match the light transmission and thermal insulation properties of greenhouse films to ensure lightweight and durable materials |
Melting Point | 105–115℃ | GB/T 19466.3-2004 / ISO 11357-3 | Adjust the blow film processing temperature to prevent material degradation during processing |
Impurity Content | No PVC/PP/metal impurities(Free from PVC, PP, and metal impurities) | Visual Inspection + Filtration Test | Prevent die blockage to avoid affecting film blowing efficiency and greenhouse film quality |
Parameter | HDPE | MDPE | LDPE | LLDPE |
Density (g/cm³) | 0.94–0.965 | 0.926–0.94 | 0.910–0.925 | 0.915–0.940 |
Melt Flow Rate (g/10min) | 0.5–1.5 (ASTM D1238) | 1.0–3.0 (ASTM D1238) | 2.0–10.0 (ASTM D1238) | 1.0–5.0 (ASTM D1238) |
Tensile Strength (MPa) | 20–35 | 15–25 | 10–20 | 12–25 |
Elongation at Break (%) | 300–700 | 500–800 | 300–600 | 400–700 |
Impact Strength (J/m) | 20–50 (Notched) | 15–40 (Notched) | 10–30 (Notched) | 15–45 (Notched) |
Vicat Softening Point (°C) | 120–130 | 110–120 | 90–100 | 95–105 |
Shrinkage (%) | 1.5–3.0 | 2.0–4.0 | 2.5–5.0 | 2.0–4.0 |
Hardness (Shore D) | 60–70 | 55–65 | 50–60 | 55–65 |
Moisture Absorption (%) | ≤0.01 | ≤0.02 | ≤0.03 | ≤0.02 |
Color | Black (Standard) | Black (Standard) | Black (Standard) | Black (Standard) |
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